BK3231SQB [ETC]

Bluetooth SoC;
BK3231SQB
型号: BK3231SQB
厂家: ETC    ETC
描述:

Bluetooth SoC

文件: 总24页 (文件大小:407K)
中文:  中文翻译
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BK3231S Datasheet  
V1.5  
BK3231S Bluetooth SoC  
Datasheet  
Preliminary Specification  
Beken Corporation  
Building 41, Capital of Tech Leaders, 1387 Zhangdong Road,  
Zhangjiang High-Tech Park, Pudong New District, Shanghai, China  
Tel: (86)21 51086811  
Fax: (86)21 60871277  
This document contains information that may be proprietary to, and/or secrets of, Beken Corporation. The  
contents of this document should not be disclosed outside the companies without specific written permission.  
Disclaimer: Descriptions of specific implementations are for illustrative purpose only, actual hardware implementation  
may differ.  
© 2015 Beken Corporation  
Proprietary and Confidential  
Page 1 of 24  
BK3231S Datasheet  
V1.5  
Revision History  
Rev.  
Date  
Author(s)  
Remark  
Draft version based on BK3231  
datasheet  
Add the 32PIN SIP package inf  
Modified the SIP package  
removed P22,P23,VPP, added  
P35,P36,P37 ,which is based on the SIP  
package  
Modified the Description  
1.0  
2015-1-7  
2016-02-26  
Yiming and Guofei  
mingsheng  
1.1  
1.2  
1.3  
2016.04.08  
2016.04.11  
Mingsheng.ao  
Mingsheng.ao  
© 2015 Beken Corporation  
Proprietary and Confidential  
Page 2 of 24  
BK3231S Datasheet  
V1.5  
Table of Contens  
1
General Description............................................................................................................................ 6  
Overview....................................................................................................................................... 6  
Block Diagram ............................................................................................................................. 6  
Features ........................................................................................................................................ 7  
Application ................................................................................................................................... 7  
Pin Information................................................................................................................................... 9  
Function Description ........................................................................................................................ 16  
Memory Address Mapping ....................................................................................................... 16  
Interrupt and Clock Unit .......................................................................................................... 17  
GPIO........................................................................................................................................... 17  
ADC............................................................................................................................................. 17  
UART.......................................................................................................................................... 18  
I2C-SMBus................................................................................................................................. 18  
SPI............................................................................................................................................... 19  
PWM Timer ............................................................................................................................... 20  
Watch dog................................................................................................................................... 20  
Electrical Specifications.................................................................................................................... 20  
General Specification................................................................................................................. 20  
BR mode ..................................................................................................................................... 21  
Package Information ........................................................................................................................ 22  
QFN 7X7 56PIN:........................................................................................................................ 22  
QFN4X4 32PIN:......................................................................................................................... 23  
Application Schematic...................................................................................................................... 24  
QFN7X7 56PIN:......................................................................................................................... 24  
QFN4X4 32PIN:......................................................................................................................... 24  
Order Information............................................................................................................................ 24  
Contact Information......................................................................................................................... 24  
1.1  
1.2  
1.3  
1.4  
2
3
3.1  
3.2  
3.3  
3.4  
3.5  
3.6  
3.7  
3.8  
3.9  
4
5
6
4.1  
4.2  
5.1  
5.2  
6.1  
6.2  
7
8
© 2015 Beken Corporation  
Proprietary and Confidential  
Page 3 of 24  
BK3231S Datasheet  
V1.5  
List of Figures  
FIGURE 1 BLOCK DIAGRAM ............................................................................................................................ 6  
FIGURE 2 BK3231S QFN56PIN ASSIGNMENT.................................................................................................. 9  
FIGURE 3 BK3231S QFN32PIN ASSIGNMENT................................................................................................ 12  
FIGURE 4 BK3231S QFN56PIN PACKAGE INFORMATION ............................................................................. 22  
FIGURE 5 BK3231S QFN32PIN PACKAGE INFORMATION ............................................................................. 23  
© 2015 Beken Corporation  
Proprietary and Confidential  
Page 4 of 24  
BK3231S Datasheet  
V1.5  
List of tables  
TABLE 1 BK3231S QFN56 PIN DESCRIPTION................................................................................................. 10  
TABLE 2 BK3231S QFN32 PIN DESCRIPTION................................................................................................. 13  
TABLE 3 THE MEMORY MAPPING................................................................................................................. 16  
TABLE 4 GENERAL CHARACTERISTICS........................................................................................................... 20  
TABLE 5 BR MODE RF CHARACTERISTICS ..................................................................................................... 21  
TABLE 6 BLE MODE RF CHARACTERISTICS.....................................................................错误!未定义书签。  
TABLE 7 BEKEN PROPRIETORY 2.4GHZ MODE RF CHARACTERISTICS............................错误!未定义书签。  
TABLE 8 ORDER INFORMATION.................................................................................................................... 24  
© 2015 Beken Corporation  
Proprietary and Confidential  
Page 5 of 24  
BK3231S Datasheet  
1 General Description  
V1.5  
1.1 Overview  
The BK3231S chip is a highly integrated SoC, and it supports two wireless protocols,  
which are Blueetooth Basic Rate (BR), and Bluetooth Low Energy (BLE). It  
integrates a high-performance 2.4GHz RF transceiver, rich features baseband,  
ARM-core MCU and various peripheral IOs. It uses up-to-4Mbit external Flash to  
excute the programmable protocol and profile to support customized applications  
such as HID, Bluetooth 3D Glasses shutter, Remote controllers.  
1.2 Block Diagram  
Data Memory  
(24 KB)  
Bluetooth  
Baseband  
2.4 GHz Radio  
Flash Controller  
3DS  
UART  
SPI  
16 KB Program  
Cache  
MCU  
ARM968E-S  
JTAG  
AHB  
AHB2APB APB  
I2C  
Power  
Managerment  
GPIO  
ICU  
PWM  
WDT  
16 MHz DPLL  
16MHz Clock  
32KHz Clock  
OTP  
32 Byte)  
DPLL  
(96 MHz)  
ADC  
16 MHz external Crystal  
RTC  
32 KHz external Crystal  
32 KHz on-chip ROSC  
BIST  
Reset  
Timer  
Figure 1 Block Diagram  
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Proprietary and Confidential  
Page 6 of 24  
 
 
 
 
BK3231S Datasheet  
V1.5  
1.3 Features  
Bluetooth® SIG Bluetooth Dual-Mode compliant  
Bluetooth 3.0 Basic Rate (BR)  
Bluetooth 4.0 Low Energy (BLE)  
ARM968 Core MCU integrated  
External Flash up-to-4Mbytes for Program and 24KB RAM for Data  
Low-power 2.4GHz Transceiver  
Operation voltage from 1.8V to 3.6 V  
-89 dBm sensitivity at 1 Mbps data rate and +4dBm transmit power for BLE  
application  
-86dBm sensitivity for 1 Mbps mode and 2 dBm transmit power for BR  
application  
External power-amplifier supporting  
Clock  
16 MHz crystal reference clock  
96MHz optional clock provided by internal DPLL  
Internal 32kHz low-power oscillator with auto-calibration (±200ppm)  
External 32kHz crystal oscillator as optional low-power clock source  
Interface and peripheral units  
FLASH programming, JTAG, Dual I2Cs, SPI and UART interface  
Integrated OTP for customization  
On-chip high accurate temperature sensor  
On-chip 7-channel 10bit general ADC  
6-outputs PWM  
4-outputs 3D Glasses shutter  
Real-time counter  
Package Type  
56-pin QFN 7mmx7mm package  
32-pin QFN 4mmx4mm package  
1.4 Application  
Wireless Self-Timer  
Wireless Keyboards  
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Proprietary and Confidential  
Page 7 of 24  
 
 
BK3231S Datasheet  
V1.5  
Wireless Mouse  
Wireless Gamepad  
LED Lighting Remote Control  
Bluetooth 3D Glasses  
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Proprietary and Confidential  
Page 8 of 24  
BK3231S Datasheet  
V1.5  
2 Pin Information  
The QFN56 package format for the full functions usage.It can be used as  
keyboard TX part and total 34 GPIO available. The pin assignment for QFN56  
package is shown in Figure 2. Other package type such as QFN32 is also  
available by request with less GPIO.  
1
2
42 VDDPA15  
41 ANT  
P27  
P35  
3
P36  
40 VCCRF  
4
VDDSPI  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
TSTEN  
P24  
P00  
P01  
P30  
P14  
P15  
P26  
P40  
P41  
P04  
5
VCCMCU  
BOOST_CP1  
BOOST_CP2  
6
BK3231S  
7
QFN  
7mmx7mm 56-Pin  
8
VOUTBOOST  
VPP  
9
10  
11  
12  
13  
14  
P37  
P34  
P16  
P33  
P31  
Figure 2 BK3231S QFN56Pin Assignment  
© 2015 Beken Corporation  
Proprietary and Confidential  
Page 9 of 24  
 
 
BK3231S Datasheet  
V1.5  
Table 1 BK3231S QFN56 Pin Description  
NO  
1
Name  
P27  
Description  
General I/O  
2
3
4
5
P35  
P36  
VDDSPI  
VCCMCU  
General I/Oor input of ADC5  
General I/Oor input of ADC6  
The output of digital LDO  
3V power supply  
The function PIN of boost,add 100nF cap between  
boost_cp1 and boost_cp2  
6
7
boost_cp1  
boost_cp2  
The function PIN of boost,add 100nF cap between  
boost_cp1 and boost_cp2  
8
9
voutboost  
VPP  
P37  
P34  
P16  
P33  
P31  
P32  
FLS_SI  
FLS_SCK  
FLS_HOLD  
P20  
P03  
P02  
P25  
P13  
P12  
P07  
P06  
P11  
P10  
P04  
P41  
P40  
P26  
P15  
P14  
P30  
P01  
P00  
The output of boost  
The 6V power supply of OTP,it can be used when download  
General I/Oor input of ADC7  
General I/Oor input of ADC4  
General I/Oor clock for I2C1  
General I/Oor input of ADC3  
General I/Oor input of ADC1  
General I/Oor input of ADC2  
The function PIN of flash  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
The function PIN of flash  
The function PIN of flash  
General I/O, or UART TX  
General I/O, or 3DS_PWM[3]  
General I/O, or 3DS_PWM[2]  
General I/Oor enable for TIMER1  
General I/Oor enable for PWM3  
General I/Oor enable for PWM2  
General I/O, or chip select for SPI  
General I/O,or MISO for SPI  
General I/Oor enable for PWM1  
General I/O, or enable for PWM0  
General I/O, or SCK for SPI  
General I/O, or PLL enable  
General I/O, or PA enable  
General I/Oor enable for TIMER2  
General I/Oor enable for PWM5  
General I/Oor enable for PWM4  
General I/Oor input of ADC0  
General I/O, or 3DS_PWM[1]  
General I/O, or 3DS_PWM[0]  
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Proprietary and Confidential  
Page 10 of 24  
 
BK3231S Datasheet  
V1.5  
38  
39  
40  
41  
42  
43  
P24  
General I/Oor enable for TIMER0  
Enable the testting function of memory  
3V power supply  
The input of RF  
The output of PA ldo  
TSTEN  
VCCRF  
ANT  
VDDPA15  
VCCIF  
3V power supply  
The output of reference voltage of ADC,it can be connected  
to a cap on the board  
44  
ADCVREF  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
P21  
P22  
P23  
VCCXTAL  
XTALI  
XTALO  
FLS_CSN  
FLS_SO  
FLS_WP  
P17  
General I/O, or UART RX  
General I/Oor clock for I2C0  
General I/Oor data I/O for I2C0  
3V power supply  
The input of 16M crystal oscillator  
The input of 16M crystal oscillator  
The function PIN of flash  
The function PIN of flash  
The function PIN of flash  
General I/Oor data I/O for I2C1  
General I/O, or MOSI for SPI  
The input of 32K crystal oscillator  
P05  
XTAL32K  
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Proprietary and Confidential  
Page 11 of 24  
BK3231S Datasheet  
V1.5  
The pin assignment for QFN32 package is shown in Figure 3.  
VDDPA15  
ANT  
1
2
3
4
5
6
7
8
24  
23  
XTAL32K  
VDDSPI  
VCCMCU  
22 VCCRF  
BK3231S  
BOOST_CP1  
BOOST_CP2  
TSTEN  
21  
20  
19  
18  
17  
QFN  
4mmx4mm 32-Pin  
P00  
P01  
VOUTBOOST  
VPP  
P30  
P14  
P31  
Figure 3 BK3231S QFN32Pin Assignment  
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Proprietary and Confidential  
Page 12 of 24  
 
BK3231S Datasheet  
V1.5  
Table 2 BK3231S QFN32 Pin Description  
NO  
1
Name  
Description  
XTAL32K  
VDDSPI  
VCCMCU  
The input of 32K crystal oscillator  
The output of digital LDO  
3V power supply  
2
3
Boost function PIN.  
Add 100nF cap between boost_cp1 and boost_cp2  
4
5
boost_cp1  
boost_cp2  
Boost function PIN.  
Add 100nF cap between boost_cp1 and boost_cp2  
6
7
voutboost  
VPP  
The output of boost  
The 6V power supply of OTP,it can be used when download  
8
9
P31  
P32  
General I/Oor input of ADC1  
General I/Oor input of ADC2  
10  
11  
12  
13  
FLS_SI  
The function PIN of flash  
The function PIN of flash  
The function PIN of flash  
General I/O, or UART TX  
FLS_SCK  
FLS_HOLD  
P20  
14  
P23  
General I/Oor data I/O for I2C0  
15  
16  
17  
P22  
P21  
P14  
General I/Oor clock for I2C0  
General I/O, or UART RX  
General I/Oor enable for PWM4  
18  
P30  
General I/Oor input of ADC0  
19  
20  
21  
22  
23  
24  
25  
P01  
General I/O, or 3DS_PWM[1]  
General I/O, or 3DS_PWM[0]  
Enable the testting function of memory  
3V power supply  
P00  
TSTEN  
VCCRF  
ANT  
The input of RF  
VDDPA15  
VCCIF  
The output of PA ldo  
3V power supply  
The output of reference voltage of ADC.  
It can be connected to a cap on the board  
26  
ADCVREF  
27  
28  
29  
30  
31  
32  
VCCXTAL  
XTALI  
3V power supply  
The input of 16M crystal oscillator  
The input of 16M crystal oscillator  
The function PIN of flash  
The function PIN of flash  
The function PIN of flash  
XTALO  
FLS_CSN  
FLS_SO  
FLS_WP  
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Page 13 of 24  
 
BK3231S Datasheet  
V1.5  
The pin assignment for QFN32 package(SIP with flash) is shown in Figure 4  
VDDPA15  
ANT  
1
2
3
4
5
6
7
8
24  
23  
P35  
P36  
VDDSPI  
22 VCCRF  
BK3231S  
VCCMCU  
boost_cp1  
TSTEN  
21  
20  
19  
18  
17  
QFN  
4mmx4mm 32-Pin  
P00  
P01  
boost_cp2  
voutboost  
P37  
P30  
P14  
Figure 4 BK3231S QFN32Pin Assignment(SIP with flash)  
Table 3 BK3231S QFN32 Pin Description(SIP with flash)  
NO  
1
Name  
Description  
P35  
General I/Oor input of ADC1  
General I/Oor input of ADC1  
The output of digital LDO  
3V power supply  
2
P36  
3
VDDSPI  
VCCMCU  
4
Boost function PIN.  
Add 100nF cap between boost_cp1 and boost_cp2  
5
6
boost_cp1  
boost_cp2  
Boost function PIN.  
Add 100nF cap between boost_cp1 and boost_cp2  
7
8
voutboost  
The output of boost  
P37  
General I/Oor input of ADC1  
9
P31  
General I/Oor input of ADC1  
10  
11  
P32  
P20  
General I/Oor input of ADC2  
General I/O, or UART TX  
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Proprietary and Confidential  
Page 14 of 24  
BK3231S Datasheet  
V1.5  
12  
13  
14  
15  
16  
P03  
P02  
P07  
P06  
P04  
General I/O, or 3DS_PWM[3], I2C1.SDA, WP_FLA  
General I/O, or 3DS_PWM[2], I2C1.SCL, HOLD_FLA  
General I/O, or SPI_NSS, CSN_FLA  
General I/O,or MISO for SPI, SCK_FLA  
General I/O, or SPI_SCK, SI_FLA  
17  
18  
P14  
P30  
General I/Oor enable for PWM4  
General I/Oor input of ADC0  
19  
20  
21  
22  
23  
24  
25  
P01  
General I/O, or 3DS_PWM[1]  
General I/O, or 3DS_PWM[0]  
Enable the testting function of memory  
3V power supply  
P00  
TSTEN  
VCCRF  
ANT  
The input of RF  
VDDPA15  
VCCIF  
The output of PA ldo  
3V power supply  
The output of reference voltage of ADC.  
It can be connected to a cap on the board  
26  
ADCVREF  
27  
28  
29  
30  
31  
32  
P21  
General I/O, or UART RX  
VCCXTAL  
XTALI  
3V power supply  
The input of 16M crystal oscillator  
The input of 16M crystal oscillator  
General I/O, or MOSI for SPI, SO_FLA  
The input of 32K crystal oscillator  
XTALO  
P05  
XTAL32K  
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Page 15 of 24  
BK3231S Datasheet  
3 Function Description  
V1.5  
3.1 Memory Address Mapping  
Table 3 The Memory Mapping  
Start Address  
End Address  
0x0003FFFF  
0x00405FFF  
Total (Bytes)  
4M maximum  
24K  
Program Memory  
Flash space 0x00000000  
Data Memory  
SRAM 0x00400000  
AHB Peripheral  
ICU 0x00800000  
BK24_BB 0x00810000  
FLASH CONTROL 0x00820000  
AHB2APB 0x00F00000  
0x0080FFFF  
0x0081FFFF  
0x0082FFFF  
0x00FFFFFF  
64K  
64K  
64K  
1M  
APB Peripheral  
WDT 0x00F00000  
PWM 0x00F00100  
SPI 0x00F00200  
0x00F000FF  
0x00F001FF  
0x00F002FF  
0x00F003FF  
0x00F004FF  
0x00F005FF  
0x00F006FF  
0x00F007FF  
0x00F008FF  
0x00F009FF  
0x00F00AFF  
0x00F1FFFF  
0x00F2FFFF  
256B  
256B  
256B  
256B  
256B  
256B  
256B  
256B  
256B  
256B  
256B  
64K  
UART 0x00F00300  
I2C0 0x00F00400  
GPIO 0x00F00500  
RTC 0x00F00600  
ADC 0x00F00700  
BT 3DS 0x00F00800  
I2C1 0x00F00900  
Timer 0x00F00A00  
XVR 0x00F10000  
CEVA DM IP 0x00F20000  
64K  
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Page 16 of 24  
 
 
 
BK3231S Datasheet  
V1.5  
3.2 Interrupt and Clock Unit  
The MCU core clock can be selected from three clock sources: 32KHz clock, 16  
MHz clock and 96 MHz DPLL.  
The ARM968E-S supports two interrupt level. The FIRQ has higher priority than  
nIRQ. In the BK3231S, all peripheral interrupts are nIRQ except the Bluetooth  
transceiver. All interrupt can be enabled, disabled, and cleared. There are two  
low power modes: MCU stop and deep sleep, and any interrupt can be  
configured to be a wake up source to let MCU exit low power mode.  
3.3 GPIO  
There are totally 40 general purpose input/output ports (GPIO). All the 40 ports  
can be used for general I/O with selectable direction for each bit, or these lines  
can be used for specialized functions.  
3.4 ADC  
An 8bits SAR-ADC is integrated in the BK3231S. Total 8 channels can be  
selected used for ADC transfer. The ADC supports continue mode and single  
transfer mode, and the sample rate can be 1 KHz to 32KHz. In single transfer  
mode, it will generate interrupt every time after transform.  
The ADC has four work modes they are sleep mode, single mode, and software  
mode and continue mode.  
IDLE mode(mode==00): ADC is in idle state.  
Single mode(mode==01): The ADC will enter idle mode when transfer is done  
and waiting MCU to read the result. You should write mode=1 again for another  
transfer.  
Controlled by software (mode==10): In this mode, interrupt will be triggered after  
transfer and wait MCU to read. The interrupt will be cleared after MCU read, and  
then the transfer will start again.  
Continue mode(mode==11):The ADC will work at the sample rate set by register.  
The sample rate can be calculated by the next formula:  
F_sample = input ADC clock/(2^(ADC_CLK_RATE+2) / 36(or 18))  
The highest sample rate is 32k  
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BK3231S Datasheet  
V1.5  
The local interrupt flag of ADC need not be cleared by software; it will be set after  
transform and be cleared after the result has been read out. But the ADC  
INTstored ICU should be cleared after the ADC INT service finished.  
The range of input voltage is from 0v to 1.5V. If the input voltage more than 1.5V,  
a resistor can be added to decrease the input voltage like the next diagram.  
BK3231  
Test_point  
PA  
D
ADC  
R1  
On/off  
100k  
R2  
Note: There are eight GPIO can be ADC input. When used as this:  
Voltage=data [9:0]/448; the saturate voltage is 1.5 volt.  
3.5 UART  
The UART interface has 128 bytes FIFO for both TX and RX. It will generate  
interrupt request when there is risk or event of FIFO underflow or overflow. For  
the RX, it will generate interrupt if found parity bit check error or stop bit check  
error.  
When the UART RX line goes from idle state (‘HIGH’) to active state (‘LOW’) for  
a set UART clock cycle, it will generate wake up interrupt to activate MCU clock.  
3.6 I2C-SMBus  
The I2C I/O interface is a two-wire, bi-directional serial bus. The I2C is compliant  
with the System Management Bus Specification, version 1.1, and compatible with  
the I C serial bus. Reads and writes to the interface by the system controller are  
byte oriented with the I2C interface autonomously controlling the serial transfer of  
the data.  
Data can be transferred at up to 1/10th of the system clock as a master or slave  
(this can be faster than allowed by the I2C specification, depending on the  
system clock used). A method of extending the clock-low duration is available to  
accommodate devices with different speed capabilities on the same bus.  
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Page 18 of 24  
 
 
BK3231S Datasheet  
V1.5  
The I2C interface may operate as a master and/or slave, and may function on a  
bus with multiple masters. The I2C provides control of SDA (serial data), SCL  
(serial clock) generation and synchronization, arbitration logic, and START/STOP  
control and generation.  
It is assumed the reader is familiar with the I2C-Bus Specification -- Version 2.0  
and system Management Bus Specification -- Version 1.1.  
The bi-directional SCL (serial clock) and SDA (serial data) lines must be  
connected to a positive power supply voltage through a pull-up resistor or similar  
circuit. Every device connected to the bus must have an open-drain or open-  
collector output for both the SCL and SDA lines, so that both are pulled high  
(recessive state) when the bus is free.  
3.7 SPI  
The Enhanced Serial Peripheral Interface (SPI) provides access to a flexible, full-  
duplex synchronous serial bus. SPI can operate as a master or slave device in  
both 3-wire or 4-wire modes, and supports multiple masters and slaves on a  
single SPI bus. The slave-select (NSS) signal can be configured as an input to  
select SPI in slave mode, or to disable Master Mode operation in a multi-master  
environment, avoiding contention on the SPI bus when more than one master  
attempts simultaneous data transfers. NSS can also be configured as a chip-  
select output in master mode, or disabled for 3-wire operation. Additional general  
purpose port I/O pins can be used to select multiple slaves.  
There are four pins for SPI interface. The master-out, slave-in (MOSI) signal is  
an output from a master device and an input to slave devices. It is used to  
serially transfer data from the master to the slave. This signal is an output when  
SPI is operating as a master and an input when SPI is operating as a slave. Data  
is transferred most-significant bit first. When configured as a master, MOSI is  
driven by the MSB of the shift register in both 3- and 4-wire mode.  
The master-in, slave-out (MISO) signal is an output from a slave device and an  
input to the master device. It is used to serially transfer data from the slave to the  
master. This signal is an input when SPI is operating as a master and an output  
when SPI is operating as a slave. Data is transferred most-significant bit first.  
The MISO pin is placed in a high-impedance state when the SPI module is  
disabled and when the SPI operates in 4-wire mode as a slave that is not  
selected. When acting as a slave in 3-wire mode, MISO is always driven by the  
MSB of the shift register.  
© 2015 Beken Corporation  
Proprietary and Confidential  
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BK3231S Datasheet  
V1.5  
In slave mode, the data on MOSI are sampled at the middle of period of every bit.  
In master mode, the data on MISO are sampled at the last clock period to  
acquire the maximal setup time.  
3.8 PWM Timer  
There are three timers, two of which is 16 bit and can be works as PWM waveform  
generator, while the other one is 20bit timer. The PWM waveform can be output to GPIO  
to drive external device such as LED.  
3.9 Watch dog  
The watch dog is used to reset the whole chip when the firmware runs out of order.  
4 Electrical Specifications  
4.1 General Specification  
Table 4 General Characteristics  
Name  
Parameter (Condition)  
Min  
Typi  
cal  
Max  
Unit Com  
ment  
Operating Condition  
Voltage  
VCC  
1.8  
3.0  
3.6  
V
TEMP  
Temperature  
-20  
+27  
+80  
ºC  
Digital input Pin  
High level  
Low level  
VIH  
VIL  
VCC-0.3  
VSS  
VCC+0.3  
VSS+0.3  
V
V
Digital output Pin  
High level (IOH=-0.25mA)  
Low level(IOL=0.25mA)  
VOH  
VOL  
VCC- 0.3  
VSS  
VCC  
VSS+0.3  
V
V
4.2 BLE mode  
Table 5 BLE mode RF Characteristics  
Name  
Parameter (Condition)  
Min  
Typi  
cal  
Max  
Unit Com  
ment  
Normal condition  
Deep sleep  
Active RX  
Active TX @ 2 dBm output power  
Transmitter  
IVDD  
IVDD  
IVDD  
TBD  
TBD  
TBD  
uA  
mA  
mA  
PRF  
PBW  
Output power  
Modulation 20 dB bandwidth  
Receiver  
4
1
5
dBm  
MHz  
Max Input 1 E-3 BER  
RXSENS 1 E-3 BER sensitivity  
0
dBm  
dBm  
dBm  
-89  
TBD  
IIP3  
IIP3, Pin=-63 dBm; Punwant=-39  
dBm; f0=2f1-f2, f2-f1=3 MHz or 4  
MHz or 5 MHz  
© 2015 Beken Corporation  
Proprietary and Confidential  
Page 20 of 24  
 
 
 
 
 
BK3231S Datasheet  
V1.5  
C/ICO  
Co-channel C/I  
ACS C/I 1MHz  
ACS C/I 2MHz  
ACS C/I 3MHz  
ACS C/I Image channel  
TBD  
TBD  
TBD  
TBD  
TBD  
TBD  
dB  
dB  
dB  
dB  
dB  
dB  
C/I1ST  
C/I2ND  
C/I3RD  
C/I1STI  
C/I2NDI  
ACS C/I 1 MHz adjacnet to image  
channel  
4.3 BR mode  
Table 6 BR mode RF Characteristics  
Name  
Parameter (Condition)  
Min  
Typi  
cal  
Max  
Unit Com  
ment  
Normal condition  
Deep sleep  
Active RX  
Active TX @ 2 dBm output power  
Transmitter  
IVDD  
IVDD  
IVDD  
TBD  
TBD  
TBD  
uA  
mA  
mA  
PRF  
PBW  
Output power  
Modulation 20 dB bandwidth  
Receiver  
2
1
5
dBm  
MHz  
Max Input 1 E-3 BER  
RXSENS 1 E-3 BER sensitivity  
0
dBm  
dBm  
dBm  
-86  
TBD  
IIP3  
IIP3, Pin=-63 dBm; Punwant=-39  
dBm; f0=2f1-f2, f2-f1=3 MHz or 4  
MHz or 5 MHz  
C/ICO  
Co-channel C/I  
ACS C/I 1MHz  
ACS C/I 2MHz  
ACS C/I 3MHz  
ACS C/I Image channel  
ACS C/I 1 MHz adjacnet to image  
channel  
11  
0
-30  
-40  
-9  
dB  
dB  
dB  
dB  
dB  
dB  
C/I1ST  
C/I2ND  
C/I3RD  
C/I1STI  
C/I2NDI  
-20  
© 2015 Beken Corporation  
Proprietary and Confidential  
Page 21 of 24  
 
 
BK3231S Datasheet  
5 Package Information  
V1.5  
5.1 QFN 7X7 56PIN:  
Figure 4 BK3231S QFN56Pin Package Information  
© 2015 Beken Corporation  
Proprietary and Confidential  
Page 22 of 24  
 
 
 
BK3231S Datasheet  
V1.5  
5.2 QFN4X4 32PIN:  
Figure 5 BK3231S QFN32Pin Package Information  
© 2015 Beken Corporation  
Proprietary and Confidential  
Page 23 of 24  
 
 
BK3231S Datasheet  
6 Application Schematic  
V1.5  
6.1 QFN7X7 56PIN:  
TBD  
6.2 QFN4X4 32PIN:  
TBD  
7 Order Information  
Table 6 Order Information  
Minimum Order  
Part number  
Package  
Packing  
Quantity  
BK3231SQB  
BK3231SQ32 QFN 4mmx4mm 32-Pin  
QFN7x7-56Pin  
Tape Reel  
Tape Reel  
3000  
10K  
8 Contact Information  
Beken Corporation Technical Support Center  
Shanghai office  
Building 41, 1387 Zhangdong Road, Zhangjiang High-Tech Park, Pudong New District,  
Shanghai, China Phone: 86-21-51086811 Fax: 86-21-60871089 Postal Code: 201203  
Email: info@bekencorp.com  
Website: www.bekencorp.com  
© 2015 Beken Corporation  
Proprietary and Confidential  
Page 24 of 24  
 
 
 
 
 
 

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