CC2540F128_16 [TI]

2.4-GHz Bluetooth low energy System-on-Chip;
CC2540F128_16
型号: CC2540F128_16
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

2.4-GHz Bluetooth low energy System-on-Chip

文件: 总33页 (文件大小:770K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
CC2540F128, CC2540F256  
www.ti.com  
SWRS084 OCTOBER 2010  
2.4-GHz Bluetooth® low energy System-on-Chip  
Check for Samples: CC2540F128, CC2540F256  
1
FEATURES  
Peripherals  
23456  
• True Single-Chip BLE Solution: CC2540 Can  
12-Bit ADC with Eight Channels and  
Configurable Resolution  
Run Both Application and BLE Protocol Stack,  
Includes Peripherals to Interface With Wide  
Range of Sensors, Etc.  
Integrated High-Performance Op-Amp and  
Ultralow-Power Comparator  
6-mm × 6-mm Package  
RF  
General-Purpose Timers (One 16-Bit, Two  
8-Bit)  
Bluetooth low energy technology  
21 General-Purpose I/O Pins (19× 4 mA, 2×  
20 mA)  
Compatible  
Excellent Link Budget (up to 97 dB),  
Enabling Long-Range Applications Without  
External Front End  
32-kHz Sleep Timer With Capture  
Two Powerful USARTs With Support for  
Several Serial Protocols  
Accurate Digital Received Signal-Strength  
Indicator (RSSI)  
Full-Speed USB Interface  
IR Generation Circuitry  
Suitable for Systems Targeting Compliance  
With Worldwide Radio Frequency  
Regulations: ETSI EN 300 328 and EN 300  
440 Class 2 (Europe), FCC CFR47 Part 15  
(US), and ARIB STD-T66 (Japan)  
Powerful Five-Channel DMA  
AES Security Coprocessor  
Battery Monitor and Temperature Sensor  
Each CC2540 Contains a Unique 48-bit  
IEEE Address  
Layout  
Development Tools  
Few External Components  
CC2540 Mini Development Kit  
Reference Design Provided  
Royalty-Free Bluetooth low energy Protocol  
6-mm × 6-mm QFN40 Package  
Stack  
Low Power  
SmartRF™ Software  
Active Mode RX Down to 19.6 mA  
Supported by IAR Embedded Workbench™  
Software for 8051  
Active Mode TX (–6 dBm): 24 mA  
Power Mode 1 (3-ms Wake-Up): 235 mA  
Power Mode 2 (Sleep Timer On): 0.9 mA  
Power Mode 3 (External Interrupts): 0.4 mA  
Wide Supply Voltage Range (2 V–3.6 V)  
APPLICATIONS  
2.4-GHz Bluetooth low energy Systems  
Mobile Phone Accessories  
Sports and Leisure Equipment  
Consumer Electronics  
Human Interface Devices (Keyboard, Mouse,  
Remote Control)  
Full RAM and Register Retention in All  
Power Modes  
Microcontroller  
High-Performance and Low-Power 8051  
Microcontroller Core  
USB Dongles  
Health Care and Medical  
In-System-Programmable Flash, 128 KB or  
256 KB  
8-KB SRAM  
A
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
3
4
5
6
SmartRF is a trademark of Texas Instruments.  
Bluetooth is a registered trademark of Bluetooth SIG, Inc.  
Supported by IAR Embedded Workbench is a trademark of IAR Systems AB.  
ZigBee is a registered trademark of ZigBee Alliance.  
All other trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2010, Texas Instruments Incorporated  
CC2540F128, CC2540F256  
SWRS084 OCTOBER 2010  
www.ti.com  
DESCRIPTION  
The CC2540 is a cost-effective, low-power, true system-on-chip (SoC) for Bluetooth low energy applications. It  
enables robust BLE master or slave nodes to be built with very low total bill-of-material costs. The CC2540  
combines an excellent RF transceiver with an industry-standard enhanced 8051 MCU, in-system programmable  
flash memory, 8-KB RAM, and many other powerful supporting features and peripherals. The CC2540 is suitable  
for systems where very low power consumption is required. Very low-power sleep modes are available. Short  
transition times between operating modes further enable low power consumption.  
The CC2540 comes in two different versions: CC2540F128/F256, with 128 and 256 KB of flash memory,  
respectively.  
Combined with the Bluetooth low energy protocol stack from Texas Instruments, the CC2540F128/F256 forms  
the market’s most flexible and cost-effective single-mode Bluetooth low energy solution.  
VDD (2 V–3.6 V)  
WATCHDOG  
TIMER  
ON-CHIP VOLTAGE  
REGULATOR  
RESET_N  
RESET  
DCOUPL  
XOSC_Q2  
XOSC_Q1  
32-MHz  
POWER-ON RESET  
BROWN OUT  
CRYSTAL OSC  
CLOCK MUX  
and  
CALIBRATION  
P2_4  
P2_3  
P2_2  
P2_1  
P2_0  
32.768-kHz  
SLEEP TIMER  
CRYSTAL OSC  
HIGH-  
32-kHz  
SPEED  
DEBUG  
INTERFACE  
POWER MANAGEMENT CONTROLLER  
RC-OSC  
RC-OSC  
PDATA  
XRAM  
IRAM  
SFR  
P1_7  
P1_6  
P1_5  
P1_4  
P1_3  
P1_2  
P1_1  
P1_0  
RAM  
SRAM  
8051 CPU  
CORE  
MEMORY  
ARBITRATOR  
FLASH  
FLASH  
DMA  
UNIFIED  
IRQ CTRL  
FLASH CTRL  
1 KB SRAM  
SRAM  
P0_7  
P0_6  
P0_5  
P0_4  
P0_3  
P0_2  
P0_1  
P0_0  
ANALOG COMPARATOR  
OP-AMP  
FIFOCTRL  
RADIO REGISTERS  
AES  
ENCRYPTION  
AND  
DECRYPTION  
DS  
ADC  
Link Layer Engine  
AUDIO/DC  
DEMODULATOR  
MODULATOR  
USB_N  
USB_P  
USB  
USART 0  
USART 1  
RECEIVE  
TRANSMIT  
TIMER 1 (16-Bit)  
TIMER 2  
(BLE LL TIMER)  
RF_P  
RF_N  
TIMER 3 (8-Bit)  
TIMER 4 (8-Bit)  
DIGITAL  
ANALOG  
MIXED  
B0301-05  
2
Submit Documentation Feedback  
Copyright © 2010, Texas Instruments Incorporated  
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
www.ti.com  
SWRS084 OCTOBER 2010  
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with  
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.  
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more  
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.  
ABSOLUTE MAXIMUM RATINGS(1)  
MIN  
–0.3  
–0.3  
MAX  
UNIT  
Supply voltage  
All supply pins must have the same voltage  
3.9  
V
VDD + 0.3,  
Voltage on any digital pin  
V
3.9  
Input RF level  
10  
85  
dBm  
°C  
Storage temperature range  
–40  
All pads, according to human-body model, JEDEC STD 22, method  
A114  
2
kV  
V
ESD(2)  
According to charged-device model, JEDEC STD 22, method C101  
500  
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings  
only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating  
Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.  
(2) CAUTION: ESD sensitive device. Precautions should be used when handing the device in order to prevent permanent damage.  
RECOMMENDED OPERATING CONDITIONS  
MIN  
–40  
2
MAX UNIT  
Operating ambient temperature range, TA  
Operating supply voltage  
85  
°C  
V
3.6  
ELECTRICAL CHARACTERISTICS  
Measured on Texas Instruments CC2540 EM reference design with TA = 25°C and VDD = 3 V  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP MAX UNIT  
Power mode 1. Digital regulator on; 16-MHz RCOSC and  
32-MHz crystal oscillator off; 32.768-kHz XOSC, POR, BOD  
and sleep timer active; RAM and register retention  
235  
Power mode 2. Digital regulator off; 16-MHz RCOSC and  
32-MHz crystal oscillator off; 32.768-kHz XOSC, POR, and  
sleep timer active; RAM and register retention  
µA  
0.9  
Icore  
Core current consumption  
Power mode 3. Digital regulator off; no clocks; POR active;  
RAM and register retention  
0.4  
Low MCU activity: 32-MHz XOSC running. No radio or  
peripherals. No flash access, no RAM access.  
6.7  
mA  
Timer 1. Timer running, 32-MHz XOSC used  
Timer 2. Timer running, 32-MHz XOSC used  
Timer 3. Timer running, 32-MHz XOSC used  
Timer 4. Timer running, 32-MHz XOSC used  
Sleep timer, including 32.753-kHz RCOSC  
ADC, when converting  
90  
90  
mA  
mA  
mA  
mA  
mA  
mA  
Peripheral current consumption  
(Adds to core current Icore for each  
peripheral unit activated)  
60  
Iperi  
70  
0.6  
1.2  
Copyright © 2010, Texas Instruments Incorporated  
Submit Documentation Feedback  
3
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
SWRS084 OCTOBER 2010  
www.ti.com  
UNIT  
GENERAL CHARACTERISTICS  
Measured on Texas Instruments CC2540 EM reference design with TA = 25°C and VDD = 3 V  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
WAKE-UP AND TIMING  
Digital regulator on, 16-MHz RCOSC and 32-MHz crystal  
oscillator off. Start-up of 16-MHz RCOSC  
Power mode 1 Active  
4
120  
410  
ms  
ms  
ms  
Digital regulator off, 16-MHz RCOSC and 32-MHz crystal  
oscillator off. Start-up of regulator and 16-MHz RCOSC  
Power mode 2 or 3 Active  
Crystal ESR = 16 . Initially running on 16-MHz RCOSC,  
with 32-MHz XOSC OFF  
Active TX or RX  
With 32-MHz XOSC initially on  
160  
150  
ms  
ms  
RX/TX turnaround  
RADIO PART  
RF frequency range  
Data rate and modulation format  
Programmable in 2-MHz steps  
2402  
2480  
MHz  
1 Mbps, GFSK, 250 kHz deviation  
RF RECEIVE SECTION  
Measured on Texas Instruments CC2540 EM reference design with TA = 25°C, VDD = 3 V, fc = 2440 MHz  
1 Mbps, GFSK, 250-kHz deviation, Bluetooth low energy mode, and 0.1% BER(1)  
PARAMETER  
Receiver sensitivity(2)  
Receiver sensitivity(2)  
Saturation(3)  
Co-channel rejection(3)  
Adjacent-channel rejection(3)  
Alternate-channel rejection(3)  
Blocking(3)  
Frequency error tolerance(4)  
Symbol rate error tolerance(5)  
TEST CONDITIONS  
MIN TYP MAX  
UNIT  
dBm  
dBm  
dBm  
dB  
High-gain mode  
Standard mode  
–93  
–87  
6
–5  
5
±1 MHz  
±2 MHz  
dB  
30  
–30  
dB  
dBm  
kHz  
ppm  
Including both initial tolerance and drift  
–250  
–80  
250  
80  
Conducted measurement with a 50-Ω single-ended load.  
Complies with EN 300 328, EN 300 440 class 2, FCC CFR47,  
Part 15 and ARIB STD-T-66  
Spurious emission. Only largest spurious  
emission stated within each band.  
–75  
dBm  
RX mode, standard mode, no peripherals active, low MCU  
activity, MCU at 250 kHz  
19.6  
22.1  
Current consumption  
mA  
RX mode, high-gain mode, no peripherals active, low MCU  
activity, MCU at 250 kHz  
(1) 0.1% BER maps to 30.8% PER  
(2) The receiver sensitivity setting is programmable using a TI BLE stack vendor-specific API command. The default value is standard  
mode.  
(3) Results based on standard gain mode  
(4) Difference between center frequency of the received RF signal and local oscillator frequency  
(5) Difference between incoming symbol rate and the internally generated symbol rate  
4
Submit Documentation Feedback  
Copyright © 2010, Texas Instruments Incorporated  
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
www.ti.com  
SWRS084 OCTOBER 2010  
RF TRANSMIT SECTION  
Measured on Texas Instruments CC2540 EM reference design with TA = 25°C, VDD = 3 V and fc = 2440 MHz  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
dBm  
dB  
Delivered to a single-ended 50-Ω load through a balun using  
maximum recommended output power setting  
4
Output power  
Delivered to a single-ended 50-Ω load through a balun using minimum  
recommended output power setting  
–20  
24  
Programmable output power  
range  
Delivered to a single-ended 50 Ω load through a balun  
Conducted measurement with a 50-Ω single-ended load. Complies  
with EN 300 328, EN 300 440 class 2, FCC CFR47, Part 15 and ARIB  
STD-T-66(1)  
Spurious emissions  
–41  
dBm  
TX mode, –23-dBm output power, no peripherals active, low MCU  
activity, MCU at 250 kHz  
21.1  
23.8  
TX mode, –6-dBm output power, no peripherals active, low MCU  
activity, MCU at 250 kHz  
Current consumption  
mA  
TX mode, 0-dBm output power, no peripherals active, low MCU  
activity, MCU at 250 kHz  
27  
TX mode, 4-dBm output power, no peripherals active, low MCU  
activity, MCU at 250 kHz  
31.6  
Differential impedance as seen from the RF port (RF_P and RF_N)  
toward the antenna  
Optimum load impedance  
70 + j30  
Ω
(1) Designs with antenna connectors that require conducted ETSI compliance at 64 MHz should insert an LC resonator in front of the  
antenna connector. Use a 1.6-nH inductor in parallel with a 1.8-pF capacitor. Connect both from the signal trace to a good RF ground.  
Copyright © 2010, Texas Instruments Incorporated  
Submit Documentation Feedback  
5
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
SWRS084 OCTOBER 2010  
www.ti.com  
32-MHz CRYSTAL OSCILLATOR  
Measured on Texas Instruments CC2540 EM reference design with TA = 25°C and VDD = 3 V  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX UNIT  
Crystal frequency  
32  
MHz  
Crystal frequency accuracy  
requirement(1)  
–40  
40 ppm  
ESR  
C0  
Equivalent series resistance  
Crystal shunt capacitance  
Crystal load capacitance  
Start-up time  
6
1
60  
7
pF  
pF  
ms  
CL  
10  
16  
0.25  
The crystal oscillator must be in power down for a  
guard time before it is used again. This  
requirement is valid for all modes of operation. The  
need for power-down guard time can vary with  
crystal type and load.  
Power-down guard time  
3
ms  
(1) Including aging and temperature dependency, as specified by [1]  
32.768-kHz CRYSTAL OSCILLATOR  
Measured on Texas Instruments CC2540 EM reference design with TA = 25°C and VDD = 3 V  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX UNIT  
Crystal frequency  
32.768  
kHz  
Crystal frequency accuracy  
requirement(1)  
–40  
40  
ppm  
ESR  
C0  
Equivalent series resistance  
Crystal shunt capacitance  
Crystal load capacitance  
Start-up time  
40  
0.9  
12  
130  
2
kΩ  
pF  
pF  
s
CL  
16  
0.4  
(1) Including aging and temperature dependency, as specified by [1]  
32-kHz RC OSCILLATOR  
Measured on Texas Instruments CC2540 EM reference design with Tw = 25°C and VDD = 3 V.  
PARAMETER  
Calibrated frequency(1)  
TEST CONDITIONS  
MIN  
TYP  
32.753  
±0.2%  
0.4  
MAX UNIT  
kHz  
Frequency accuracy after calibration  
Temperature coefficient(2)  
Supply-voltage coefficient(3)  
Calibration time(4)  
%/°C  
%/V  
ms  
3
2
(1) The calibrated 32-kHz RC oscillator frequency is the 32-MHz XTAL frequency divided by 977.  
(2) Frequency drift when temperature changes after calibration  
(3) Frequency drift when supply voltage changes after calibration  
(4) When the 32-kHz RC oscillator is enabled, it is calibrated when a switch from the 16-MHz RC oscillator to the 32-MHz crystal oscillator  
is performed while SLEEPCMD.OSC32K_CALDIS is set to 0.  
6
Submit Documentation Feedback  
Copyright © 2010, Texas Instruments Incorporated  
Product Folder Link(s): CC2540F128 CC2540F256  
 
CC2540F128, CC2540F256  
www.ti.com  
SWRS084 OCTOBER 2010  
16-MHz RC OSCILLATOR  
Measured on Texas Instruments CC2540 EM reference design with TA = 25°C and VDD = 3 V  
PARAMETER  
Frequency(1)  
TEST CONDITIONS  
MIN  
TYP  
16  
MAX  
UNIT  
MHz  
Uncalibrated frequency accuracy  
Calibrated frequency accuracy  
Start-up time  
±18%  
±0.6%  
10  
ms  
ms  
Initial calibration time(2)  
50  
(1) The calibrated 16-MHz RC oscillator frequency is the 32-MHz XTAL frequency divided by 2.  
(2) When the 16-MHz RC oscillator is enabled, it is calibrated when a switch from the 16-MHz RC oscillator to the 32-MHz crystal oscillator  
is performed while SLEEPCMD.OSC_PD is set to 0.  
RSSI CHARACTERISTICS  
Measured on Texas Instruments CC2540 EM reference design with TA = 25°C and VDD = 3 V  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
High-gain mode  
–99 to –44  
Useful RSSI range(1)  
dBm  
Standard mode  
High-gain mode  
–90 to –35  
Absolute uncalibrated RSSI accuracy(1)  
Step size (LSB value)  
±4  
1
dB  
dB  
(1) Assuming CC2540 EM reference design. Other RF designs give an offset from the reported value.  
FREQUENCY SYNTHESIZER CHARACTERISTICS  
Measured on Texas Instruments CC2540 EM reference design with TA = 25°C, VDD = 3 V and fc = 2440 MHz  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
–109  
–112  
–119  
MAX  
UNIT  
At ±1-MHz offset from carrier  
Phase noise, unmodulated  
carrier  
At ±3-MHz offset from carrier  
At ±5-MHz offset from carrier  
dBc/Hz  
ANALOG TEMPERATURE SENSOR  
Measured on Texas Instruments CC2540 EM reference design with TA = 25°C and VDD = 3 V  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
12-bit  
mv/°C  
/ 0.1 V  
°C  
Output  
1480  
4.5  
1
Temperature coefficient  
Voltage coefficient  
Measured using integrated ADC, internal band-gap voltage  
reference, and maximum resolution  
Initial accuracy without calibration  
Accuracy using 1-point calibration  
Current consumption when enabled  
±10  
±5  
°C  
0.5  
mA  
Copyright © 2010, Texas Instruments Incorporated  
Submit Documentation Feedback  
7
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
SWRS084 OCTOBER 2010  
www.ti.com  
OP-AMP CHARACTERISTICS  
TA = 25°C, VDD = 3 V, . All measurement results are obtained using the CC2540 reference designs post-calibration.  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
Chopping Configuration, Register APCFG = 0x07, OPAMPMC = 0x03, OPAMPC = 0x01  
Output maximum voltage  
Output minimum voltage  
Open-loop gain  
VDD – 0.07  
V
V
0.07  
108  
dB  
MHz  
V/ms  
V
Gain-bandwidth product  
Slew rate  
2
107  
Input maximum voltage  
Intput minimum voltage  
Input offset voltage  
VDD + 0.13  
–55  
40  
mV  
mV  
dB  
mA  
CMRR Common-mode rejection ratio  
Supply current  
90  
0.4  
1.1  
1.7  
f = 0.01 Hz to 1 Hz  
Input noise voltage  
nV/(Hz)  
f = 0.1 Hz to 10 Hz  
Non-Chopping Configuration, Register APCFG = 0x07, OPAMPMC = 0x00, OPAMPC = 0x01  
Output maximum voltage  
Output minimum voltage  
Open-loop gain  
VDD – 0.07  
V
V
0.07  
108  
dB  
Gain-bandwidth product  
Slew rate  
2
MHz  
V/ms  
V
107  
Input maximum voltage  
Intput minimum voltage  
Input offset voltage  
VDD + 0.13  
–55  
0.8  
90  
mV  
mV  
dB  
CMRR Common-mode rejection ratio  
Supply current  
0.4  
60  
mA  
f = 0.01 Hz to 1 Hz  
Input noise voltage  
nV/(Hz)  
f = 0.1 Hz to 10 Hz  
65  
COMPARATOR CHARACTERISTICS  
TA = 25°C, VDD = 3 V. All measurement results are obtained using the CC2540 reference designs, post-calibration.  
PARAMETER  
Common-mode maximum voltage  
Common-mode minimum voltage  
Input offset voltage  
TEST CONDITIONS  
MIN  
TYP MAX UNIT  
VDD  
–0.3  
1
V
mV  
µV/°C  
mV/V  
nA  
Offset vs temperature  
Offset vs operating voltage  
Supply current  
16  
4
230  
0.15  
Hysteresis  
mV  
8
Submit Documentation Feedback  
Copyright © 2010, Texas Instruments Incorporated  
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
www.ti.com  
SWRS084 OCTOBER 2010  
ADC CHARACTERISTICS  
TA = 25°C and VDD = 3 V  
PARAMETER  
TEST CONDITIONS  
VDD is voltage on AVDD5 pin  
VDD is voltage on AVDD5 pin  
VDD is voltage on AVDD5 pin  
Simulated using 4-MHz clock speed  
Peak-to-peak, defines 0 dBFS  
Single-ended input, 7-bit setting  
Single-ended input, 9-bit setting  
Single-ended input, 10-bit setting  
Single-ended input, 12-bit setting  
Differential input, 7-bit setting  
Differential input, 9-bit setting  
Differential input, 10-bit setting  
Differential input, 12-bit setting  
10-bit setting, clocked by RCOSC  
12-bit setting, clocked by RCOSC  
7-bit setting, both single and differential  
MIN  
0
TYP  
MAX  
VDD  
VDD  
VDD  
UNIT  
V
Input voltage  
External reference voltage  
0
V
External reference voltage differential  
0
V
Input resistance, signal  
Full-scale signal(1)  
197  
2.97  
5.7  
kΩ  
V
7.5  
9.3  
10.3  
6.5  
ENOB(1)  
Effective number of bits  
bits  
8.3  
10  
11.5  
9.7  
10.9  
0–20  
Useful power bandwidth  
Total harmonic distortion  
kHz  
dB  
Single ended input, 12-bit setting, –6  
dBFS(1)  
–75.2  
–86.6  
THD  
Differential input, 12-bit setting, –6  
dBFS(1)  
Single-ended input, 12-bit setting(1)  
Differential input, 12-bit setting(1)  
70.2  
79.3  
Single-ended input, 12-bit setting, –6  
dBFS(1)  
Signal to nonharmonic ratio  
dB  
dB  
78.8  
88.9  
>84  
>84  
Differential input, 12-bit setting, –6  
dBFS(1)  
Differential input, 12-bit setting, 1-kHz  
sine (0 dBFS), limited by ADC resolution  
CMRR  
Common-mode rejection ratio  
Crosstalk  
Single ended input, 12-bit setting, 1-kHz  
sine (0 dBFS), limited by ADC resolution  
dB  
Offset  
Midscale  
–3  
0.68%  
0.05  
0.9  
mV  
Gain error  
12-bit setting, mean(1)  
12-bit setting, maximum(1)  
12-bit setting, mean(1)  
12-bit setting, maximum(1)  
DNL  
INL  
Differential nonlinearity  
Integral nonlinearity  
LSB  
LSB  
4.6  
13.3  
10  
12-bit setting, mean, clocked by RCOSC  
12-bit setting, max, clocked by RCOSC  
Single ended input, 7-bit setting(1)  
Single ended input, 9-bit setting(1)  
Single ended input, 10-bit setting(1)  
Single ended input, 12-bit setting(1)  
Differential input, 7-bit setting(1)  
Differential input, 9-bit setting(1)  
Differential input, 10-bit setting(1)  
Differential input, 12-bit setting(1)  
29  
35.4  
46.8  
57.5  
66.6  
40.7  
51.6  
61.8  
70.8  
SINAD  
(–THD+N)  
Signal-to-noise-and-distortion  
dB  
(1) Measured with 300-Hz sine-wave input and VDD as reference.  
Copyright © 2010, Texas Instruments Incorporated  
Submit Documentation Feedback  
9
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
SWRS084 OCTOBER 2010  
www.ti.com  
ADC CHARACTERISTICS (continued)  
TA = 25°C and VDD = 3 V  
PARAMETER  
TEST CONDITIONS  
7-bit setting  
MIN  
TYP  
20  
MAX  
UNIT  
9-bit setting  
10-bit setting  
12-bit setting  
36  
Conversion time  
ms  
68  
132  
1.2  
4
Power consumption  
mA  
mV/V  
mV/10°C  
V
Internal reference VDD coefficient  
Internal reference temperature coefficient  
Internal reference voltage  
0.4  
1.15  
CONTROL INPUT AC CHARACTERISTICS  
TA = –40°C to 85°C, VDD = 2 V to 3.6 V.  
PARAMETER  
TEST CONDITIONS  
MIN TYP  
MAX UNIT  
The undivided system clock is 32 MHz when crystal oscillator is used.  
The undivided system clock is 16 MHz when calibrated 16-MHz RC  
oscillator is used.  
System clock, fSYSCLK  
tSYSCLK = 1/ fSYSCLK  
16  
32  
MHz  
See item 1, Figure 1. This is the shortest pulse that is recognized as  
a complete reset pin request. Note that shorter pulses may be  
recognized but do not lead to complete reset of all modules within the  
chip.  
RESET_N low duration  
Interrupt pulse duration  
1
µs  
ns  
See item 2, Figure 1.This is the shortest pulse that is recognized as  
an interrupt request.  
20  
RESET_N  
1
2
Px.n  
T0299-01  
Figure 1. Control Input AC Characteristics  
10  
Submit Documentation Feedback  
Copyright © 2010, Texas Instruments Incorporated  
Product Folder Link(s): CC2540F128 CC2540F256  
 
CC2540F128, CC2540F256  
www.ti.com  
SWRS084 OCTOBER 2010  
SPI AC CHARACTERISTICS  
TA = –40°C to 125°C, VDD = 2 V to 3.6 V  
PARAMETER  
TEST CONDITIONS  
MIN  
250  
250  
TYP MAX UNIT  
Master, RX and TX  
Slave, RX and TX  
Master  
t1  
SCK period  
ns  
SCK duty cycle  
SSN low to SCK  
50%  
Master  
63  
63  
63  
63  
t2  
t3  
ns  
Slave  
Master  
SCK to SSN high  
ns  
Slave  
t4  
t5  
t6  
t7  
MOSI early out  
MOSI late out  
MISO setup  
MISO hold  
Master, load = 10 pF  
Master, load = 10 pF  
Master  
7
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
10  
90  
10  
Master  
SCK duty cycle  
MOSI setup  
MOSI hold  
Slave  
50%  
t10  
t11  
t9  
Slave  
35  
10  
Slave  
MISO late out  
Slave, load = 10 pF  
Master, TX only  
Master, RX and TX  
Slave, RX only  
Slave, RX and TX  
95  
8
4
Operating frequency  
MHz  
8
4
SCK  
t2  
t3  
SSN  
t4  
t5  
MOSI  
D0  
X
D1  
t6  
t7  
MISO  
X
D0  
X
T0478-01  
Figure 2. SPI Master AC Characteristics  
Copyright © 2010, Texas Instruments Incorporated  
Submit Documentation Feedback  
11  
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
SWRS084 OCTOBER 2010  
www.ti.com  
SCK  
t2  
t3  
SSN  
t8  
t9  
MISO  
D0  
D0  
X
D1  
t10  
t11  
MOSI  
X
X
T0479-01  
Figure 3. SPI Slave AC Characteristics  
12  
Submit Documentation Feedback  
Copyright © 2010, Texas Instruments Incorporated  
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
www.ti.com  
SWRS084 OCTOBER 2010  
DEBUG INTERFACE AC CHARACTERISTICS  
TA = –40°C to 125°C, VDD = 2 V to 3.6 V  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
MHz  
ns  
fclk_dbg  
Debug clock frequency (see Figure 4)  
Allowed high pulse on clock (see Figure 4)  
Allowed low pulse on clock (see Figure 4)  
12  
t1  
t2  
35  
35  
ns  
EXT_RESET_N low to first falling edge on debug  
clock (see Figure 6)  
t3  
t4  
t5  
167  
83  
ns  
ns  
ns  
Falling edge on clock to EXT_RESET_N high (see  
Figure 6)  
EXT_RESET_N high to first debug command (see  
Figure 6)  
83  
t6  
t7  
t8  
Debug data setup (see Figure 5)  
Debug data hold (see Figure 5)  
Clock-to-data delay (see Figure 5)  
2
4
ns  
ns  
ns  
Load = 10 pF  
30  
Time  
DEBUG_CLK  
P2_2  
t1  
t2  
1/fclk_dbg  
T0436-01  
Figure 4. Debug Clock – Basic Timing  
Time  
DEBUG_CLK  
P2_2  
RESET_N  
t3  
t4  
t5  
T0437-01  
Figure 5. Debug Enable Timing  
Copyright © 2010, Texas Instruments Incorporated  
Submit Documentation Feedback  
13  
Product Folder Link(s): CC2540F128 CC2540F256  
 
 
CC2540F128, CC2540F256  
SWRS084 OCTOBER 2010  
www.ti.com  
Time  
DEBUG_CLK  
P2_2  
DEBUG_DATA  
(to CC2540)  
P2_1  
DEBUG_DATA  
(from CC2540)  
P2_1  
t6  
t7  
t8  
T0438-02  
Figure 6. Data Setup and Hold Timing  
TIMER INPUTS AC CHARACTERISTICS  
TA = –40°C to 85°C, VDD = 2 V to 3.6 V  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
Synchronizers determine the shortest input pulse that can be  
recognized. The synchronizers operate at the current system  
clock rate (16 MHz or 32 MHz).  
Input capture pulse duration  
1.5  
tSYSCLK  
14  
Submit Documentation Feedback  
Copyright © 2010, Texas Instruments Incorporated  
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
www.ti.com  
SWRS084 OCTOBER 2010  
DC CHARACTERISTICS  
TA = 25°C, VDD = 3 V  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
V
Logic-0 input voltage  
0.5  
Logic-1 input voltage  
2.5  
–50  
–50  
V
Logic-0 input current  
Input equals 0 V  
50  
50  
nA  
nA  
kΩ  
V
Logic-1 input current  
Input equals VDD  
I/O-pin pullup and pulldown resistors  
Logic-0 output voltage, 4- mA pins  
Logic-1 output voltage, 4-mA pins  
20  
Output load 4 mA  
Output load 4 mA  
0.5  
2.4  
V
Copyright © 2010, Texas Instruments Incorporated  
Submit Documentation Feedback  
15  
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
SWRS084 OCTOBER 2010  
www.ti.com  
DEVICE INFORMATION  
PIN DESCRIPTIONS  
The CC2540 pinout is shown in Figure 7 and a short description of the pins follows.  
CC2540  
RHA Package  
(Top View)  
40 39 38 37 36 35 34 33 32 31  
DGND_USB  
USB_P  
USB_N  
DVDD_USB  
P1_5  
R_BIAS  
1
2
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
AVDD4  
AVDD1  
AVDD2  
RF_N  
3
4
5
AGND  
Ground Pad  
P1_4  
RF_P  
6
P1_3  
7
AVDD3  
P1_2  
XOSC_Q2  
XOSC_Q1  
8
P1_1  
9
10  
DVDD2  
AVDD5  
11 12 13 14 15 16 17 18 19 20  
P0076-05  
NOTE: The exposed ground pad must be connected to a solid ground plane, as this is the ground connection for the chip.  
Figure 7. Pinout Top View  
16  
Submit Documentation Feedback  
Copyright © 2010, Texas Instruments Incorporated  
Product Folder Link(s): CC2540F128 CC2540F256  
 
CC2540F128, CC2540F256  
www.ti.com  
SWRS084 OCTOBER 2010  
PIN DESCRIPTIONS  
PIN NAME  
PIN  
28  
27  
24  
29  
21  
31  
40  
1
PIN TYPE  
DESCRIPTION  
AVDD1  
AVDD2  
AVDD3  
AVDD4  
AVDD5  
AVDD6  
DCOUPL  
DGND_USB  
DVDD_USB  
DVDD1  
DVDD2  
GND  
Power (analog) 2-V–3.6-V analog power-supply connection  
Power (analog) 2-V–3.6-V analog power-supply connection  
Power (analog) 2-V–3.6-V analog power-supply connection  
Power (analog) 2-V–3.6-V analog power-supply connection  
Power (analog) 2-V–3.6-V analog power-supply connection  
Power (analog) 2-V–3.6-V analog power-supply connection  
Power (digital)  
Ground pin  
Power (digital)  
Power (digital)  
Power (digital)  
Ground  
1.8-V digital power-supply decoupling. Do not use for supplying external circuits.  
Connect to GND  
4
2-V–3.6-V digital power-supply connection  
39  
10  
19  
18  
17  
16  
15  
14  
13  
12  
11  
9
2-V–3.6-V digital power-supply connection  
2-V–3.6-V digital power-supply connection  
The ground pad must be connected to a solid ground plane.  
P0_0  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Digital I/O  
Port 0.0  
P0_1  
Port 0.1  
P0_2  
Port 0.2  
P0_3  
Port 0.3  
P0_4  
Port 0.4  
P0_5  
Port 0.5  
P0_6  
Port 0.6  
P0_7  
Port 0.7  
P1_0  
Port 1.0 – 20-mA drive capability  
P1_1  
Port 1.1 – 20-mA drive capability  
P1_2  
8
Port 1.2  
P1_3  
7
Port 1.3  
P1_4  
6
Port 1.4  
P1_5  
5
Port 1.5  
P1_6  
38  
37  
36  
35  
34  
33  
Port 1.6  
P1_7  
Port 1.7  
P2_0  
Port 2.0  
P2_1  
Port 2.1  
P2_2  
Port 2.2  
P2_3/  
XOSC32K_Q2  
Digital I/O,  
Analog I/O  
Port 2.3/32.768 kHz XOSC  
P2_4/  
XOSC32K_Q1  
32  
Digital I/O,  
Analog I/O  
Port 2.4/32.768 kHz XOSC  
RBIAS  
30  
20  
26  
Analog I/O  
Digital input  
RF I/O  
External precision bias resistor for reference current  
Reset, active-low  
RESET_N  
RF_N  
Negative RF input signal to LNA during RX  
Negative RF output signal from PA during TX  
RF_P  
25  
RF I/O  
Positive RF input signal to LNA during RX  
Positive RF output signal from PA during TX  
USB_N  
3
2
Digital I/O  
Digital I/O  
Analog I/O  
Analog I/O  
USB N  
USB_P  
USB P  
XOSC_Q1  
XOSC_Q2  
22  
23  
32-MHz crystal oscillator pin 1 or external-clock input  
32-MHz crystal oscillator pin 2  
Copyright © 2010, Texas Instruments Incorporated  
Submit Documentation Feedback  
17  
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
SWRS084 OCTOBER 2010  
www.ti.com  
BLOCK DIAGRAM  
A block diagram of the CC2540 is shown in Figure 8. The modules can be roughly divided into one of three  
categories: CPU-related modules; modules related to power, test, and clock distribution; and radio-related  
modules. In the following subsections, a short description of each module is given.  
VDD (2 V–3.6 V)  
WATCHDOG  
TIMER  
ON-CHIP VOLTAGE  
REGULATOR  
RESET_N  
RESET  
DCOUPL  
XOSC_Q2  
XOSC_Q1  
32-MHz  
POWER-ON RESET  
BROWN OUT  
CRYSTAL OSC  
CLOCK MUX  
and  
CALIBRATION  
P2_4  
P2_3  
P2_2  
P2_1  
P2_0  
32.768-kHz  
SLEEP TIMER  
CRYSTAL OSC  
HIGH-  
32-kHz  
SPEED  
DEBUG  
INTERFACE  
POWER MANAGEMENT CONTROLLER  
RC-OSC  
RC-OSC  
PDATA  
XRAM  
IRAM  
SFR  
P1_7  
P1_6  
P1_5  
P1_4  
P1_3  
P1_2  
P1_1  
P1_0  
RAM  
SRAM  
8051 CPU  
CORE  
MEMORY  
ARBITRATOR  
FLASH  
FLASH  
UNIFIED  
DMA  
IRQ CTRL  
FLASH CTRL  
1 KB SRAM  
SRAM  
P0_7  
P0_6  
P0_5  
P0_4  
P0_3  
P0_2  
P0_1  
P0_0  
ANALOG COMPARATOR  
OP-AMP  
FIFOCTRL  
RADIO REGISTERS  
AES  
ENCRYPTION  
AND  
DECRYPTION  
DS  
ADC  
Link Layer Engine  
AUDIO/DC  
DEMODULATOR  
MODULATOR  
USB_N  
USB_P  
USB  
USART 0  
USART 1  
RECEIVE  
TRANSMIT  
TIMER 1 (16-Bit)  
TIMER 2  
(BLE LL TIMER)  
RF_P  
RF_N  
TIMER 3 (8-Bit)  
TIMER 4 (8-Bit)  
DIGITAL  
ANALOG  
MIXED  
B0301-05  
Figure 8. CC2540 Block Diagram  
18  
Submit Documentation Feedback  
Copyright © 2010, Texas Instruments Incorporated  
Product Folder Link(s): CC2540F128 CC2540F256  
 
CC2540F128, CC2540F256  
www.ti.com  
SWRS084 OCTOBER 2010  
BLOCK DESCRIPTIONS  
CPU and Memory  
The 8051 CPU core is a single-cycle 8051-compatible core. It has three different memory access busses (SFR,  
DATA, and CODE/XDATA), a debug interface, and an 18-input extended interrupt unit.  
The memory arbiter is at the heart of the system, as it connects the CPU and DMA controller with the physical  
memories and all peripherals through the SFR bus. The memory arbiter has four memory-access points, access  
of which can map to one of three physical memories: an SRAM, flash memory, and XREG/SFR registers. It is  
responsible for performing arbitration and sequencing between simultaneous memory accesses to the same  
physical memory.  
The SFR bus is drawn conceptually in Figure 8 as a common bus that connects all hardware peripherals to the  
memory arbiter. The SFR bus in the block diagram also provides access to the radio registers in the radio  
register bank, even though these are indeed mapped into XDATA memory space.  
The 8-KB SRAM maps to the DATA memory space and to parts of the XDATA memory spaces. The SRAM is  
an ultralow-power SRAM that retains its contents even when the digital part is powered off (power modes 2 and  
3).  
The 128/256 KB flash block provides in-circuit programmable non-volatile program memory for the device, and  
maps into the CODE and XDATA memory spaces.  
Peripherals  
Writing to the flash block is performed through a flash controller that allows page-wise erasure and 4-bytewise  
programming. See User Guide for details on the flash controller.  
A versatile five-channel DMA controller is available in the system, accesses memory using the XDATA memory  
space, and thus has access to all physical memories. Each channel (trigger, priority, transfer mode, addressing  
mode, source and destination pointers, and transfer count) is configured with DMA descriptors that can be  
located anywhere in memory. Many of the hardware peripherals (AES core, flash controller, USARTs, timers,  
ADC interface, etc.) can be used with the DMA controller for efficient operation by performing data transfers  
between a single SFR or XREG address and flash/SRAM.  
Each CC2540 contains a unique 48-bit IEEE address that can be used as the public device address for a  
Bluetooth device. Designers are free to use this address, or provide their own, as described in the Bluetooth  
specfication.  
The interrupt controller services a total of 18 interrupt sources, divided into six interrupt groups, each of which  
is associated with one of four interrupt priorities. I/O and sleep timer interrupt requests are serviced even if the  
device is in a sleep mode (power modes 1 and 2) by bringing the CC2540 back to the active mode.  
The debug interface implements a proprietary two-wire serial interface that is used for in-circuit debugging.  
Through this debug interface, it is possible to erase or program the entire flash memory, control which oscillators  
are enabled, stop and start execution of the user program, execute instructions on the 8051 core, set code  
breakpoints, and single-step through instructions in the code. Using these techniques, it is possible to perform  
in-circuit debugging and external flash programming elegantly.  
The I/O controller is responsible for all general-purpose I/O pins. The CPU can configure whether peripheral  
modules control certain pins or whether they are under software control, and if so, whether each pin is configured  
as an input or output and if a pullup or pulldown resistor in the pad is connected. Each peripheral that connects  
to the I/O pins can choose between two different I/O pin locations to ensure flexibility in various applications.  
The sleep timer is an ultralow-power timer that can either use an external 32.768-kHz crystal oscillator or an  
internal 32.753-kHz RC oscillator. The sleep timer runs continuously in all operating modes except power mode  
3. Typical applications of this timer are as a real-time counter or as a wake-up timer to get out of power modes 1  
or 2.  
A built-in watchdog timer allows the CC2540 to reset itself if the firmware hangs. When enabled by software,  
the watchdog timer must be cleared periodically; otherwise, it resets the device when it times out.  
Copyright © 2010, Texas Instruments Incorporated  
Submit Documentation Feedback  
19  
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
SWRS084 OCTOBER 2010  
www.ti.com  
Timer 1 is a 16-bit timer with timer/counter/PWM functionality. It has a programmable prescaler, a 16-bit period  
value, and five individually programmable counter/capture channels, each with a 16-bit compare value. Each of  
the counter/capture channels can be used as a PWM output or to capture the timing of edges on input signals. It  
can also be configured in IR generation mode, where it counts timer 3 periods and the output is ANDed with the  
output of timer 3 to generate modulated consumer IR signals with minimal CPU interaction.  
Timer 2 is a 40-bit timer used by the Bluetooth low energy stack. It has a 16-bit counter with a configurable timer  
period and a 24-bit overflow counter that can be used to keep track of the number of periods that have  
transpired. A 40-bit capture register is also used to record the exact time at which a start-of-frame delimiter is  
received/transmitted or the exact time at which transmission ends. There are two 16-bit timer-compare registers  
and two 24-bit overflow-compare registers that can be used to give exact timing for start of RX or TX to the radio  
or general interrupts.  
Timer 3 and timer 4 are 8-bit timers with timer/counter/PWM functionality. They have a programmable prescaler,  
an 8-bit period value, and one programmable counter channel with an 8-bit compare value. Each of the counter  
channels can be used as PWM output.  
USART 0 and USART 1 are each configurable as either an SPI master/slave or a UART. They provide double  
buffering on both RX and TX and hardware flow control and are thus well suited to high-throughput full-duplex  
applications. Each USART has its own high-precision baud-rate generator, thus leaving the ordinary timers free  
for other uses. When configured as SPI slaves, the USARTs sample the input signal using SCK directly instead  
of using some oversampling scheme, and are thus well-suited for high data rates.  
The AES encryption/decryption core allows the user to encrypt and decrypt data using the AES algorithm with  
128-bit keys. The AES core also supports ECB, CBC, CFB, OFB, CTR, and CBC-MAC, as well as hardware  
support for CCM.  
The ADC supports 7 to 12 bits of resolution with a corresponding range of bandwidths from 30-kHz to 4-kHz,  
respectively. DC and audio conversions with up to eight input channels (I/O controller pins) are possible. The  
inputs can be selected as single-ended or differential. The reference voltage can be internal, AVDD, or a  
single-ended or differential external signal. The ADC also has a temperature-sensor input channel. The ADC can  
automate the process of periodic sampling or conversion over a sequence of channels.  
The operational amplifier is intended to provide front-end buffering and gain for the ADC. Both inputs as well as  
the output are available on pins, so the feedback network is fully customizable. A chopper-stabilized mode is  
available for applications that need good accuracy with high gain.  
The ultralow-power analog comparator enables applications to wake up from PM2 or PM3 based on an analog  
signal. Both inputs are brought out to pins; the reference voltage must be provided externally. The comparator  
output is connected to the I/O controller interrupt detector and can be treated by the MCU as a regular I/O pin  
interrupt.  
20  
Submit Documentation Feedback  
Copyright © 2010, Texas Instruments Incorporated  
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
www.ti.com  
SWRS084 OCTOBER 2010  
TYPICAL CHARACTERISTICS  
RX CURRENT IN WAIT FOR SYNC  
TX CURRENT  
vs  
vs  
TEMPERATURE  
TEMPERATURE  
32.5  
32  
20.5  
20  
TX Power Setting = 4 dBm  
VCC = 3 V  
Gain = Standard Setting  
Input = -70 dBm  
VCC = 3 V  
19.5  
19  
31.5  
31  
18.5  
30.5  
-40  
-20  
0
20  
40  
60  
80  
-40  
-20  
0
20  
40  
60  
80  
Temperature (°C)  
Temperature (°C)  
G001  
G002  
Figure 9.  
Figure 10.  
RX SENSITIVITY  
vs  
TX POWER  
vs  
TEMPERATURE  
TEMPERATURE  
-83  
-84  
-85  
-86  
-87  
-88  
-89  
-90  
-91  
-92  
7
6
5
4
3
2
1
0
Gain = Standard Setting  
VCC = 3 V  
TX Power Setting = 4 dBm  
VCC = 3 V  
-40  
-20  
0
20  
40  
60  
80  
-40  
-20  
0
20  
40  
60  
80  
Temperature (°C)  
Temperature (°C)  
G003  
G004  
Figure 11.  
Figure 12.  
RX CURRENT IN WAIT FOR SYNC  
TX CURRENT  
vs  
vs  
SUPPLY VOLTAGE  
SUPPLY VOLTAGE  
19.7  
19.68  
19.66  
19.64  
19.62  
19.6  
32  
31.9  
31.8  
31.7  
31.6  
31.5  
31.4  
31.3  
31.2  
31.1  
31  
Gain = Standard Setting  
Input = -70 dBm  
TA = 25°C  
TA = 25°C  
TX Power Setting = 4 dBm  
19.58  
19.56  
19.54  
19.52  
19.5  
2
2.2  
2.4  
2.6  
2.8  
3
3.2  
3.4  
3.6  
2
2.2  
2.4  
2.6  
2.8  
3
3.2  
3.4  
3.6  
Supply Voltage (V)  
Supply Voltage (V)  
G005  
G006  
Figure 13.  
Figure 14.  
Copyright © 2010, Texas Instruments Incorporated  
Submit Documentation Feedback  
21  
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
SWRS084 OCTOBER 2010  
www.ti.com  
TYPICAL CHARACTERISTICS (continued)  
RX SENSITIVITY  
TX POWER  
vs  
vs  
SUPPLY VOLTAGE  
SUPPLY VOLTAGE  
-87  
-87.2  
-87.4  
-87.6  
-87.8  
-88  
5
4.8  
4.6  
4.4  
4.2  
4
Gain = Standard Setting  
TA = 25°C  
TA = 25°C  
TX Power Setting = 4 dBm  
-88.2  
-88.4  
-88.6  
-88.8  
-89  
3.8  
3.6  
3.4  
3.2  
3
2
2.2  
2.4  
2.6  
2.8  
3
3.2  
3.4  
3.6  
2
2.2  
2.4  
2.6  
2.8  
3
3.2  
3.4  
3.6  
Supply Voltage (V)  
Supply Voltage (V)  
G007  
G008  
Figure 15.  
Figure 16.  
RX SENSITIVITY  
vs  
RX INTERFERER REJECTION (SELECTIVITY)  
vs  
FREQUENCY  
INTERFERER FREQUENCY  
-87  
-87.2  
-87.4  
-87.6  
-87.8  
-88  
60  
50  
40  
30  
20  
10  
0
Gain = Standard Setting  
TA = 25°C  
VCC = 3 V  
-88.2  
-88.4  
-88.6  
-88.8  
-89  
Gain = Standard Setting  
TA = 25°C  
VCC = 3 V  
Wanted Signal at 2426 MHz  
with -67 dBm Level  
-10  
2400 2410 2420 2430 2440 2450 2460 2470 2480  
Frequency (MHz)  
2400 2410 2420 2430 2440 2450 2460 2470 2480  
Frequency (MHz)  
G009  
G010  
Figure 17.  
Figure 18.  
TX POWER  
vs  
FREQUENCY  
5
TA = 25°C  
TX Power Setting = 4 dBm  
VCC = 3 V  
4.8  
4.6  
4.4  
4.2  
4
3.8  
3.6  
3.4  
3.2  
3
2400 2410 2420 2430 2440 2450 2460 2470 2480  
Frequency (MHz)  
G011  
Figure 19.  
22  
Submit Documentation Feedback  
Copyright © 2010, Texas Instruments Incorporated  
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
www.ti.com  
SWRS084 OCTOBER 2010  
TYPICAL CHARACTERISTICS (continued)  
Table 1. Output Power and Current Consumption(1)(2)  
Typical Output Power (dBm)  
Typical Current Consumption (mA)  
4
0
32  
27  
24  
21  
–6  
–23  
(1) Measured on Texas Instruments CC2540 EM reference design with TA = 25°C, VDD = 3 V and fc = 2440 MHz.  
(2) The transmitter output power setting is programmable using a TI BLE stack vendor-specific API command. The default value is 0 dBm.  
Copyright © 2010, Texas Instruments Incorporated  
Submit Documentation Feedback  
23  
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
SWRS084 OCTOBER 2010  
www.ti.com  
APPLICATION INFORMATION  
Few external components are required for the operation of the CC2540. A typical application circuit is shown in  
Figure 20.  
Optional 32-kHz Crystal(1)  
C331  
2-V to 3.6-V Power Supply  
C401  
C321  
R301  
RBIAS 30  
DGND_USB  
USB_P  
USB_N  
DVDD_USB  
P1_5  
1
2
3
4
5
6
7
8
9
L251  
C252  
AVDD4 29  
AVDD1 28  
AVDD2 27  
Antenna  
(50 W)  
C251  
C261  
L252  
L253  
C253  
RF_N  
RF_P  
26  
25  
CC2540  
L261  
C262  
P1_4  
DIE ATTACH PAD  
AVDD3 24  
P1_3  
XOSC_Q2  
23  
22  
P1_2  
XOSC_Q1  
P1_1  
AVDD5 21  
10 DVDD2  
XTAL1  
C221  
C231  
Power Supply Decoupling Capacitors are Not Shown  
Digital I/O Not Connected  
S0383-03  
(1) 32-kHz crystal is mandatory when running the chip in low-power modes, except if the link layer is in the standby  
state (Vol. 6 Part B Section 1.1 in [1]).  
NOTE: Different antenna alternatives will be provided as reference designs.  
Figure 20. CC2540 Application Circuit  
Table 2. Overview of External Components (Excluding Supply Decoupling Capacitors)  
Component  
C221  
Description  
Value  
12 pF  
12 pF  
18 pF  
1 pF  
32-MHz xtal loading capacitor  
32-MHz xtal loading capacitor  
Part of the RF matching network  
Part of the RF matching network  
Part of the RF matching network  
Part of the RF matching network  
Part of the RF matching network  
32-kHz xtal loading capacitor  
32-kHz xtal loading capacitor  
C231  
C251  
C252  
C253  
1 pF  
C261  
18 pF  
1 pF  
C262  
C321  
15 pF  
15 pF  
1 µF  
C331  
C401  
Decoupling capacitor for the internal digital regulator  
24  
Submit Documentation Feedback  
Copyright © 2010, Texas Instruments Incorporated  
Product Folder Link(s): CC2540F128 CC2540F256  
 
CC2540F128, CC2540F256  
www.ti.com  
SWRS084 OCTOBER 2010  
Table 2. Overview of External Components (Excluding Supply Decoupling Capacitors) (continued)  
Component  
L251  
Description  
Value  
2 nH  
1 nH  
3 nH  
2 nH  
56 kΩ  
Part of the RF matching network  
Part of the RF matching network  
Part of the RF matching network  
Part of the RF matching network  
L252  
L253  
L261  
R301  
Resistor used for internal biasing  
Input/Output Matching  
When using an unbalanced antenna such as a monopole, a balun should be used to optimize performance. The  
balun can be implemented using low-cost discrete inductors and capacitors. The recommended balun shown  
consists of C262, L261, C252, and L252.  
Crystal  
An external 32-MHz crystal, XTAL1, with two loading capacitors (C221 and C231) is used for the 32-MHz crystal  
oscillator. See 32-MHz CRYSTAL OSCILLATOR for details. The load capacitance seen by the 32-MHz crystal is  
given by:  
1
CL =  
+ Cparasitic  
1
1
+
C221 C231  
(1)  
XTAL2 is an optional 32.768-kHz crystal, with two loading capacitors (C321 and C331) used for the 32.768-kHz  
crystal oscillator. The 32.768-kHz crystal oscillator is used in applications where both very low sleep-current  
consumption and accurate wake-up times are needed. The load capacitance seen by the 32.768-kHz crystal is  
given by:  
1
CL =  
+ Cparasitic  
1
1
+
C321 C331  
(2)  
A series resistor may be used to comply with the ESR requirement.  
On-Chip 1.8-V Voltage Regulator Decoupling  
The 1.8-V on-chip voltage regulator supplies the 1.8-V digital logic. This regulator requires a decoupling capacitor  
(C401) for stable operation.  
Power-Supply Decoupling and Filtering  
Proper power-supply decoupling must be used for optimum performance. The placement and size of the  
decoupling capacitors and the power supply filtering are very important to achieve the best performance in an  
application. TI provides a compact reference design that should be followed very closely.  
References  
1. Bluetooth® Core Technical Specification document, version 4.0  
http://www.bluetooth.com/SiteCollectionDocuments/Core_V40.zip  
2. CC253x System-on-Chip Solution for 2.4-GHz IEEE 802.15.4 and ZigBee® Applications/CC2540  
System-on-Chip Solution for 2.4-GHz Bluetooth low energy Applications (SWRU191)  
Additional Information  
Texas Instruments offers a wide selection of cost-effective, low-power RF solutions for proprietary and  
standard-based wireless applications for use in industrial and consumer applications. Our selection includes RF  
transceivers, RF transmitters, RF front ends, and System-on-Chips as well as various software solutions for the  
sub-1- and 2.4-GHz frequency bands.  
Copyright © 2010, Texas Instruments Incorporated  
Submit Documentation Feedback  
25  
Product Folder Link(s): CC2540F128 CC2540F256  
CC2540F128, CC2540F256  
SWRS084 OCTOBER 2010  
www.ti.com  
In addition, Texas Instruments provides a large selection of support collateral such as development tools,  
technical documentation, reference designs, application expertise, customer support, third-party and university  
programs.  
The Low-Power RF E2E Online Community provides technical support forums, videos and blogs, and the chance  
to interact with fellow engineers from all over the world.  
With a broad selection of product solutions, end application possibilities, and a range of technical support, Texas  
Instruments offers the broadest low-power RF portfolio. We make RF easy!  
The following subsections point to where to find more information.  
Texas Instruments Low-Power RF Web Site  
Forums, videos, and blogs  
RF design help  
E2E interaction  
Join us today at www.ti.com/lprf-forum.  
Texas Instruments Low-Power RF Developer Network  
Texas Instruments has launched an extensive network of low-power RF development partners to help customers  
speed up their application development. The network consists of recommended companies, RF consultants, and  
independent design houses that provide a series of hardware module products and design services, including:  
RF circuit, low-power RF, and ZigBee® design services  
Low-power RF and ZigBee module solutions and development tools  
RF certification services and RF circuit manufacturing  
Need help with modules, engineering services or development tools?  
Search the Low-Power RF Developer Network tool to find a suitable partner.  
www.ti.com/lprfnetwork  
Low-Power RF eNewsletter  
The Low-Power RF eNewsletter keeps you up-to-date on new products, news releases, developers’ news, and  
other news and events associated with low-power RF products from TI. The Low-Power RF eNewsletter articles  
include links to get more online information.  
Sign up today on  
www.ti.com/lprfnewsletter  
26  
Submit Documentation Feedback  
Copyright © 2010, Texas Instruments Incorporated  
Product Folder Link(s): CC2540F128 CC2540F256  
PACKAGE OPTION ADDENDUM  
www.ti.com  
11-Oct-2010  
PACKAGING INFORMATION  
Status (1)  
Eco Plan (2)  
MSL Peak Temp (3)  
Samples  
Orderable Device  
Package Type Package  
Drawing  
Pins  
Package Qty  
Lead/  
Ball Finish  
(Requires Login)  
CC2540F128RHAR  
CC2540F128RHAT  
CC2540F256RHAR  
CC2540F256RHAT  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
VQFN  
VQFN  
VQFN  
VQFN  
RHA  
RHA  
RHA  
RHA  
40  
40  
40  
40  
2500  
250  
Green (RoHS  
& no Sb/Br)  
CU NIPDAU Level-3-260C-168 HR  
Purchase Samples  
Green (RoHS  
& no Sb/Br)  
CU NIPDAU Level-3-260C-168 HR  
CU NIPDAU Level-3-260C-168 HR  
CU NIPDAU Level-3-260C-168 HR  
Purchase Samples  
Request Free Samples  
Purchase Samples  
2500  
250  
Green (RoHS  
& no Sb/Br)  
Green (RoHS  
& no Sb/Br)  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability  
information and additional product content details.  
TBD: The Pb-Free/Green conversion plan has not been defined.  
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that  
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.  
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between  
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.  
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight  
in homogeneous material)  
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information  
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and  
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.  
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.  
Addendum-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
9-Oct-2010  
TAPE AND REEL INFORMATION  
*All dimensions are nominal  
Device  
Package Package Pins  
Type Drawing  
SPQ  
Reel  
Reel  
A0  
B0  
K0  
P1  
W
Pin1  
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant  
(mm) W1 (mm)  
CC2540F128RHAR  
CC2540F128RHAT  
CC2540F256RHAR  
VQFN  
VQFN  
VQFN  
RHA  
RHA  
RHA  
40  
40  
40  
2500  
250  
330.0  
330.0  
330.0  
16.4  
16.4  
16.4  
6.3  
6.3  
6.3  
6.3  
6.3  
6.3  
1.5  
1.5  
1.5  
12.0  
12.0  
12.0  
16.0  
16.0  
16.0  
Q2  
Q2  
Q2  
2500  
Pack Materials-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
9-Oct-2010  
*All dimensions are nominal  
Device  
Package Type Package Drawing Pins  
SPQ  
Length (mm) Width (mm) Height (mm)  
CC2540F128RHAR  
CC2540F128RHAT  
CC2540F256RHAR  
VQFN  
VQFN  
VQFN  
RHA  
RHA  
RHA  
40  
40  
40  
2500  
250  
333.2  
333.2  
333.2  
345.9  
345.9  
345.9  
28.6  
28.6  
28.6  
2500  
Pack Materials-Page 2  
IMPORTANT NOTICE  
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements,  
and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should  
obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are  
sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.  
TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard  
warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where  
mandated by government requirements, testing of all parameters of each product is not necessarily performed.  
TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and  
applications using TI components. To minimize the risks associated with customer products and applications, customers should provide  
adequate design and operating safeguards.  
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right,  
or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information  
published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a  
warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual  
property of the third party, or a license from TI under the patents or other intellectual property of TI.  
Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied  
by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive  
business practice. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional  
restrictions.  
Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all  
express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not  
responsible or liable for any such statements.  
TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would reasonably  
be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing  
such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and  
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products  
and any use of TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be  
provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in  
such safety-critical applications.  
TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are  
specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military  
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is solely at  
the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use.  
TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are  
designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated  
products in automotive applications, TI will not be responsible for any failure to meet such requirements.  
Following are URLs where you can obtain information on other Texas Instruments products and application solutions:  
Products  
Applications  
Audio  
Amplifiers  
amplifier.ti.com  
dataconverter.ti.com  
www.dlp.com  
www.ti.com/audio  
Data Converters  
DLP® Products  
Automotive  
www.ti.com/automotive  
www.ti.com/communications  
Communications and  
Telecom  
DSP  
dsp.ti.com  
Computers and  
Peripherals  
www.ti.com/computers  
Clocks and Timers  
Interface  
www.ti.com/clocks  
interface.ti.com  
logic.ti.com  
Consumer Electronics  
Energy  
www.ti.com/consumer-apps  
www.ti.com/energy  
Logic  
Industrial  
www.ti.com/industrial  
Power Mgmt  
Microcontrollers  
RFID  
power.ti.com  
Medical  
www.ti.com/medical  
microcontroller.ti.com  
www.ti-rfid.com  
Security  
www.ti.com/security  
Space, Avionics &  
Defense  
www.ti.com/space-avionics-defense  
RF/IF and ZigBee® Solutions www.ti.com/lprf  
Video and Imaging  
Wireless  
www.ti.com/video  
www.ti.com/wireless-apps  
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265  
Copyright © 2010, Texas Instruments Incorporated  

相关型号:

CC2540F256

2.4-GHz Bluetooth? low energy System-on-Chip
TI

CC2540F256RHAR

2.4-GHz Bluetooth? low energy System-on-Chip
TI

CC2540F256RHAT

2.4-GHz Bluetooth? low energy System-on-Chip
TI

CC2540T

具有工业级工作温度范围的低功耗 (LE) Bluetooth® 无线 MCU
TI

CC2540TF256RHAR

具有工业级工作温度范围的低功耗 (LE) Bluetooth® 无线 MCU | RHA | 40 | -40 to 125
TI

CC2540TF256RHAT

具有工业级工作温度范围的低功耗 (LE) Bluetooth® 无线 MCU | RHA | 40 | -40 to 125
TI

CC2541

TI德州仪器低功耗蓝牙BLE4.0射频片上系统SOC
TI

CC2541-Q1

符合汽车标准的 SimpleLink 低功耗 Bluetooth® 无线 MCU
TI

CC2541EMK

Bluetooth® Low Energy CC2540 Development Kit
TI

CC2541F128RHAR

2.4-GHz Bluetooth™ low energy and Proprietary System-on-Chip
TI

CC2541F128RHAT

2.4-GHz Bluetooth low energy and Proprietary System-on-Chip
TI

CC2541F256RHAR

2.4-GHz Bluetooth™ low energy and Proprietary System-on-Chip
TI