ANMG04 [ADI]
韩国ADS四键触摸按键IC;
| 型号： | ANMG04 |
| 厂家： | 
ADI |
| 描述： | 韩国ADS四键触摸按键IC |
| 文件： | 总29页 (文件大小：820K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ANMG04
ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
SPECIFICATION
VER. Preliminary
November, 2013
ADSemiconductor Confidential
ADSemiconductor®
ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
Revision History
Rev.
Description of change
Date
Originator
Pre. First creation
13. 11. 28.
KD PARK
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
Content
Revision History.................................................................................................................2
1
Features...............................................................................................................................4
1.1
1.2
General Features ...................................................................................................4
Applications..........................................................................................................4
2
3
4
Block Diagram....................................................................................................................5
Pin Configuration ...............................................................................................................6
Pin Description ...................................................................................................................7
4.1
Pin Map (14 SOP package) ..................................................................................8
5
6
Absolute Maximum Rating ................................................................................................9
ESD & Latch-up Characteristics ........................................................................................9
6.1
6.2
ESD Characteristics..............................................................................................9
Latch-up Characteristics.......................................................................................9
7
8
Electrical Characteristics..................................................................................................10
ANMG04 Implementation................................................................................................11
8.1
8.2
8.3
8.4
8.5
Typical current consumption..............................................................................11
CS implementation .............................................................................................11
LED drive implementation .................................................................................12
Parallel output.....................................................................................................12
SCL, SDA implementation.................................................................................12
9
I2C Interface......................................................................................................................13
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
I2C Enable / Disable............................................................................................13
Start & stop condition.........................................................................................13
Data validity........................................................................................................13
Byte format.........................................................................................................13
Acknowledge......................................................................................................13
First byte.............................................................................................................14
Transferring data.................................................................................................15
I2C write and read operations in normal mode...................................................16
I2C timing diagram .............................................................................................16
10 ANMG04 control register list...........................................................................................17
10.1
10.2
I2C Register Map ................................................................................................17
Details.................................................................................................................18
11 Recommended Circuit Diagram .......................................................................................25
11.1 ANMG04 (14 SOP)............................................................................................25
12 MECHANICAL DRAWING ...........................................................................................27
12.1 Mechanical Drawing of ANMG04 (14 SOP).....................................................27
13 MARKING DESCRIPTION............................................................................................28
13.1 Marking Description of ANMG04 (14 SOP) .....................................................28
NOTES: ...................................................................................................................................29
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
1 Features
1.1 General Features
4-Channel capacitive sensor with auto sensitivity calibration
Available LED PWM drive up to 4
Multi interface - I2C serial interface / Parallel outputs
Selectable output operation mode (Single output / Multi output)
Adjustable 256 steps sensitivity
Almost no external component needed
Low current consumption
Embedded common and normal noise elimination circuit
RoHS compliant 14 SOP packages
Moisture sensitivity level 3 (MSL3)
1.2 Applications
Home appliances (TV, Monitor keypads)
Mobile applications (PMP, MP3, Car navigation)
Membrane switch replacement
Sealed control panels, keypads
Touch screen replacement application Home application
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
2 Block Diagram
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
3 Pin Configuration
[14-SOP]
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
4 Pin Description
VDD, GND
Supply voltage and ground pin.
R.N.D
Radio frequency Noise Detection pin. Normally, R.N.D pin does not connect to anywhere.
But, in radio frequency noise environment, this pin must form a pattern line on PCB.
CS1 ~ CS4
Capacitive sensor input pins.
LCAP
Internal LDO output port.
D1 ~ D4
Parallel output ports of CS1~CS4 respectively / LED PWM drive output ports. The structure of these parallel
output ports is open drain NMOS for active low output level operation.
SCL, SDA
SCL is I2C clock input pin and SDA is I2C data input-output pin. These ports have internal pull-up resistor.
In case of not use, this pin must be not connected to any circuitry.
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
4.1 Pin Map (14 SOP package)
Pin
Number
1
Name
I/O
Description
Capacitive sensor input 2
Protection
CS2
CS3
CS4
SCL
Analog Input
Analog Input
Analog Input
VDD/GND
VDD/GND
VDD/GND
VDD/GND
2
3
4
Capacitive sensor input 3
Capacitive sensor input 4
I2C clock input
I2C data input-output
Open drain NMOS structure
Supply ground
Digital Input
Digital
Input / Output
Ground
5
SDA
VDD/GND
6
7
GND
VDD
R.N.D
Analog Input
Radio frequency Noise Detection pin
Parallel output of CS1
VDD/GND
8
9
D1
D2
D3
D4
Digital Output
LED PWM drive output1
Open drain NMOS structure
Parallel output of CS2
LED PWM drive output2
Open drain NMOS structure
Parallel output of CS3
LED PWM drive output3
Open drain NMOS structure
Parallel output of CS4
LED PWM drive output4
Open drain NMOS structure
Internal LDO Output
VDD/GND
VDD/GND
VDD/GND
VDD/GND
Digital Output
Digital Output
Digital Output
10
11
12
13
14
LCAP
VDD
CS1
Analog Output
Power
VDD/GND
GND
Power (2.5V~5.5V)
Analog Input
Capacitive sensor input 1
VDD/GND
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
5 Absolute Maximum Rating
Battery supply voltage
Maximum voltage on any pin
Maximum current on any PAD
Power Dissipation
6V
VDD+0.3
100mA
800mW
-50 ~ 150℃
Storage Temperature
Operating Temperature
-20 ~ 75℃
Junction Temperature
150℃
Note : Unless any other command is noted, all above are operated in normal temperature.
6 ESD & Latch-up Characteristics
6.1 ESD Characteristics
Mode
Polarity
Max
Reference
8000V
8000V
8000V
550V
VDD
VSS
H.B.M
Pos / Neg
P to P
VDD
VSS
M.M
Pos / Neg
550V
400V
P to P
C.D.M
-
800V
Field Induced Charge
6.2 Latch-up Characteristics
Mode
Polarity
Max
100mA
-100mA
8.25V
Reference
Positive
Negative
Positive
I Test
JESD78D : 2011
V supply over 5.0V
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
7 Electrical Characteristics
▪ VDD=3.3V, Typical system frequency (Unless otherwise noted), TA = 25℃
Characteristics
Symbol
Test Condition
Min
Typ
Max
Units
Power supply requirement and current consumption
Operating voltage
VDD
IDD
2.5
-
5.5
-
V
Current consumption
VDD= 3.3V, Standby state
0.50
2.1
mA
Reset and input level
Internal reset voltage
Input high level
VDD_RST
VIH
TA = 25℃
-
-
V
V
V
| IIH | ≤ +5μA
| IIL | ≤ +5μA
VDD*0.6
–0.3
VDD+0.3
VDD*0.3
Input low level
VIL
Slow calibration speed
Normal calibration speed
Fast calibration speed
-
-
-
100
80
60
-
-
-
Self calibration time after
system reset
TCAL
RP/U
msec
Internal Pull Up resister of
SDA, SCL, INT
-
30
-
kΩ
Touch sensing performance
Minimum detective
capacitance difference
Sense input
ΔCMIN
CS
0.1
-
-
-
-
pF
pF
Ω
50
capacitance range1
Output impedance
(open drain)
ΔC > ΔCMIN
ΔC < ΔCMIN
-
-
12
30M
-
-
Zo
System performance
Max. output current
(LED drive current)
IOUT
Per unit drive output port
-
-
8.0
㎃
LED PWM control2
NPWM
-
-
-
-
16
256
-
-
-
step
step
MHz
sec
Sensitivity control3
Max. I2C SCL clock speed
Touch expired time
fSCL_MAX
TEX
Maximum internal I2C clock
Normal calibration speed
2
-
30
1
The sensitivity can be decreased with higher parallel capacitance of CS pin including parasitic capacitance made by
neighbor GND or other pattern. The series resistor(under 1kΩ) of CS can be used in noisy condition to avoid mal-function
from external surge and ESD.
2
Refer to the chapter 10.2.12. LED luminance control register
3
Refer to the chapter 10.2.8. Sensitivity register
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8 ANMG04 Implementation
8.1 Typical current consumption
ANMG04 uses internal bias circuit, so internal clock frequency and current consumption is fixed and no
external bias circuit is needed. Internal clock frequency and calibration speed can be changed by I2C register
setting4. Faster calibration speed needs more current consumption than normal or slower calibration speed. Slow
calibration speed isn’t recommended if it has not problem of current consumption.
Internal bias circuit can make the circuit design simple and reduce external components.
8.2 CS implementation
ANMG04 has 256 step selections of sensitivity and internal surge protection resister. Sensitivity of each sensing
channel (CS) can be independently controlled on others. External components of CS pin such as series resistor
or parallel capacitor isn’t necessary. The parallel parasitic capacitance of CS pins caused by touch line, touch
pad and neighbor GND or other pattern may affect sensitivity. The sensitivity will be decreased when bigger
parallel parasitic capacitance of CS pin is added.
Parallel capacitor (CS1~S4) of CS pin is useful in case of detail sensitivity mediation is required such as for
complementation sensitivity difference between channels. Same as above parallel parasitic capacitance,
sensitivity will be decreased when a big value of parallel capacitor (CS1~S4) is used. Under 50pF capacitor can be
used as sensitivity meditation capacitor and a few pF is usually used. The RS, serial connection resistor of CS
pins, may be used to avoid mal-function from external surge and ESD. (It might be optional.) From 200Ω to
1kΩ is recommended for RS. Refer to below CS pins application figure.
RS4
CS4<<
Touch PAD4
CS4
RS1
Touch PAD1
CS1<<
CS1
The ANMG04 has eight independent touch sensor input from CS1 to CS4. The internal touch decision process
of each channel is separated from others. Therefore eight channel touch key board application can be designed
by using only one ANMG04 without coupling problems.
The size and shape of PAD might have influence on the sensitivity. The sensitivity will be optimal when the size
of PAD is approximately an half of the first knuckle (it’s about 10 ㎜ｘ 7 ㎜). The connection line of CS to
touch PAD is recommended to be routed as short as possible to prevent from abnormal touch detect caused by
connection line. The unused CS pin should not be connected with the ground.
4
Refer to 10.2.4. Clock control register.
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
8.3 LED drive implementation
ANMG04 has a function to control the LED using D1~D4 ports. For using D1~D4 as LED driver ports, LEDs
and resisters must be equipped as below figure, and write the ‘port_mode” register5 as ‘1’. D1 ~ D4 ports can
drive LEDs by ‘PWM_ctrlx’ register6 control. ANMG04 can drive up to 8 LED as below method.
VDD
VDD
LED4
LED1
RD4
RD1
D1 <<
D4 <<
8.4 Parallel output
ANMG04 acts as active low parallel output mode. Parallel output ports (D1~D4) have an open drain NMOS
structure. For this reason, the parallel output mode of ANMG04 needs ROUT as below figures. The maximum
output drive current is 8mA, so over a few kΩ must be used as ROUT. Normally 10kΩ is used as ROUT
.
VDD
ROUT1
ROUT2
OUTPUT1
OUTPUT2
D1
D2
ROUT4
OUTPUT4
D4
Active low parallel output mode circuit
8.5 SCL, SDA implementation
SCL is I2C clock input and SDA is I2C data input-output. These ports have internal pull-up resistor. SCL has
Schmitt trigger input structure to prevent clock signal from being broken. Maximum supported I2C clock
frequency is 2MHz. SDA has NMOS open drain structure and internal pull-up resister of which value is 30kΩ
typical. So, according to communication speed a few kΩ resister must be used as pull-up resister for proper data
pulse rising time. For more details refer to ‘Chapter 9. I2C Interface’.
5
Refer to the chapter 10.2.12. Port mode control register
6
Refer to the chapter 10.2.11. LED luminance control register
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
9 I2C Interface
9.1 I2C Enable / Disable
If the SDA or SCL signal goes to low, I2C control block is enabled automatically. And if the SDA and SCL
signal maintain high during about 2 us, I2C control block is disabled automatically also.
9.2 Start & stop condition
Start Condition (S)
Stop Condition (P)
Repeated Start (Sr)
9.3 Data validity
The SDA should be stable when the SCL is high and the SDA can be changed when the SCL is low.
9.4 Byte format
The byte structure is composed with 8Bit data and an acknowledge signal.
9.5 Acknowledge
It is a check bit whether the receiver gets the data from the transmitter without error or not. The receiver will
write ‘0’ when it received the data successfully and ‘1’ if not.
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9.6 First byte
9.6.1
Slave address
It is the first byte from the start condition. It is used to access the slave device. The initial chip address of
ANMG04 is ‘48’ hexadecimal number.
─
9.6.2
R/W
The direction of data is decided by the bit and it follows the address data.
MSB
LSB
─
Address
7 bit
R/W
1bit
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9.7 Transferring data
9.7.1
Write operation
The byte sequence is as follows:
1. The first byte gives the device address plus the direction bit (R/W = 0).
2. The second byte contains the internal address of the first register to be accessed.
3. The next byte is written in the internal register. Following bytes are written in successive internal registers.
4. The transfer lasts until stop conditions are encountered.
5. The ANMG04 acknowledges every byte transfer.
9.7.2
Read operation
The address of the first register to read is programmed in a write operation without data, and terminated by the
stop condition. Then, another start is followed by the device address and R/W= 1. All following bytes are now
data to be read at successive positions starting from the initial address.
9.7.3
Read/Write Operation
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
9.8 I2C write and read operations in normal mode
The following figure represents the I2C normal mode write and read registers.
☞ Write register 0x00 to 0x01 with data AA and BB
Device
Address 0x48
Register
Address 0x00
Start
ACK
ACK
Data AA
ACK
Data BB
ACK
Stop
Read register 0x00 and 0x01
Device
Address 0x48
Register
Address 0x00
Start
ACK
ACK
ACK
Stop
Device
Address 0x49
Start
ACK
Data Read AA
Data Read BB
Stop
ACK
From Slave to Master
From Master to Slave
9.9 I2C timing diagram
100kbps
400kbps
PARAMETER
SYMBOL
UNIT
MIN.
4.0
4.7
4.0
4.7
1.0
250
-
MAX.
MIN.
MAX.
Hold time (repeated)START condition.
LOW period of the SCL clock
HIGH period of the SCL clock
Set-up time for a repeated START condition
Data hold time
tHD;STA
-
0.6
1.3
0.6
0.6
-
-
us
us
us
us
us
ns
ns
ns
us
tLOW
tHIGH
tSU;STA
tHD;DAT
tSU;DAT
tr
-
-
-
-
-
-
-
-
-
Data set-up time
100
20
-
Rise time of both SDA and SCL signals
Fall time of both SDA and SCL signals
Set-up time for STOP condition
1000
300
-
300
300
-
tf
-
20
tSU;STO
4.0
0.6
Bus free time between a STOP and START
condition
Noise margin at the LOW level for each
connected device
Noise margin at the HIGH level for each
connected device
tBUF
VnL
VnH
4.7
-
-
-
1.3
-
-
-
us
V
V
0.1VDD
0.2VDD
0.1VDD
0.2VDD
Input Low level
Input High level
0
VDD*0.2
VDD
V
V
VDD*0.8
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10 ANMG04 control register list
Note: The unused bits (defined as reserved) in I2C registers must be kept to zero.
10.1 I2C Register Map
Addr Reset
Bit name of each bytes
Name
.
Value
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
(Hex) (Bin)
ch_enable
/soft_rst
i2c_id
01H 1111 1111
-
-
-
-
ch4_en
ch3_en
ch2_en
ch1_en
06H 0100 1000
2AH Read only
i2c_id
wr_bit
o_ch1
output
-
-
-
-
-
o_ch4
clk_sel
response_ctrl
o_ch3
o_ch2
rb_sel
bf_mode software_rst
clock_ctrl 34H 0000 0110
global_ctrl1 36H 0100 1100
state_count 37H 1111 1111
init_cal_opt
response_off_ctrl
1
1
1
cal_pre_scaler
sin_multi_mod
e
global_ctrl2 38H 1011 1100 imp_sel
cal_hold_time
0
clk_off
sensitivity1 39H 0001 1100
sensitivity2 3AH 0001 1100
sensitivity3 3BH 0001 1100
sensitivity4 3CH 0001 1100
sensitivity01
sensitivity02
sensitivity03
sensitivity04
cal_speed 41H 0110 0110
cal_BS_spe
42H 0110 0110
ed
rnd_bf_up
rnd_bs_up
rnd_bf_down
rnd_bs_down
sen_bf_up
sen_bs_up
sen_bf_down
sen_bs_down
PWM_ctrl1 43H 0000 0000
PWM_ctrl2 44H 0000 0000
pwm_d2
pwm_d4
pwm_d1
pwm_d3
0000 0000
port_mode 4FH
rd_ch_H1 50H
rd_ch_L1 51H
Percent_H 52H
-
-
-
-
-
-
-
pmod_d4
rd_ch_H1
pmod_d3
pmod_d2
pmod_d1
-
-
-
rd_ch_L1
touch_percent[24:17]
touch_percent[16:9]
touch_percent[8:1]
rd_ch_H2
Percent_M 53H Read only
Percent_L 54H
rd_ch_H2 56H
rd_ch_L2 57H
-
-
-
-
-
-
rd_ch_L2
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10.2 Details
10.2.1 Channel enable / reset register
Type: R/W
Address
Register Name
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
ch_enable
/soft_rst
-
-
-
-
ch4_en
ch3_en
ch2_en
ch1_en
01h
Description
Enable, disable and reset of each channel control register.
It is strongly recommended that the Bit7 ~ Bit4 of the ch_enable register is to be ‘0’.
Bit name
Reset value
Function
Channel enable / disable and Channel reset (chx_en is control bit for CSx channel)
chx_en
1
0 : Channel disable and sensing channel reset
1 : Channel enable
10.2.2 I2C address of ANMG04
Type: R/W
Address
06h
Register Name
i2c_id
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
i2c_id
wr_bit
Description
Chip address of ANMG04 control register.
Bit name
wr_bit
Reset value
0
Function
Write/Read address selection - 0 : Write address, 1 : Read address
Chip address of ANMG04.
i2c_id
0100100
10.2.3 Output data
Type: R
Address
2Ah
Register Name
output
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
-
-
-
-
o_ch4
o_ch3
o_ch2
o_ch1
Description
The output data register from channel 1 to channel 4.
Bit name
Reset value
Function
o_chx is output bit for CSx channel
0 : No touch detected
o_chx
Read only
1 : Touch detected
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10.2.4 Clock control register
Type: R/W
Address
Register Name
clock_ctrl
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
init_cal_opt
-
clk_sel
rb_sel
34h
Description
This register controls the global options of ANMG04
Bit name
Reset value
Function
ANMG04 provides three internal calibration speeds with this register.
00, 01 : Fast
10 : Normal
rb_sel
10
11 : Slow
ANMG04 provides four internal calibration speeds with this register.
00 : Fast
01 : Normal
clk_sel
01
10 : Slow
11 : Slowest
To control the initial BF time.
init_cal_opt[2:0] * 5 + 5 (Seconds)
init_cal_opt
000
10.2.5 Global option control register 1
Type: R/W
Address
Register Name
global_ctrl1
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
software
_rst
response_off_ctrl
response_ctrl
bf_mode
36h
Description
This register controls the global options of ANMG04
Bit name
Reset value
Function
Software reset control bit. Reset the data of all sensing channel.
software_rst
0
0 : No reset
1 : Reset
Operation mode selection
bf_mode
0
0 : Normal mode
1 : BF mode
Numbers of continuous touch detections for touch decision.
response_ctrl[2:0] + 1 (Maximum time : 7)
response_ctrl
011
010
Numbers of continuous touch off detections for touch off decision.
response_off_ ctrl[2:0] + 1 (Maximum time : 7)
response_off_ctrl
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10.2.6 State count control register
Type: R/W
Address
Register Name
state_count
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
1
1
1
cal_pre_scaler
37h
Description
Register to set the pre-scaler for the calibration speed.
Bit name
Reset value
Function
The pre-scaler for the calibration speed.
cal_pre_scaler[4:0] x 16ms (1-period)
cal_pre_scaler
1 1111
10.2.7 Global option control register 2
Type: R/W
Address
38h
Register Name
global_ctrl2
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
sin_mult
i_mode
imp_sel
cal_hold_time
0
clk_off
Description
This register controls the global options of ANMG04.
Bit name
Reset value
Function
System clock off control bit.
0 : Not clock off
clk_off
0
1 : Clock off
Output expiration Time control.
cal_hold_tim
e
cal_hold_time[3:0] x 4 ( seconds)
The output expiration time is infinite when the data of the “cal_hold_time”
is “0000”.
1111
Single/Multi output operation mode selection bit.
0 : Multi output mode
sin_multi_mo
de
0
1
1 : Single output mode
Impedance of the sensing wire of all channels control bit.
0 : High impedance
imp_sel
1 : Low impedance except sensing period.
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10.2.8 Sensitivity register
Type: R/W
Address
39H
Register Name
sensitivity1
sensitivity2
sensitivity3
sensitivity4
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
sensitivity01
sensitivity02
sensitivity03
sensitivity04
3AH
3BH
3CH
Description
This register controls the global options of ANMG04.
Bit name
Reset value
Function
Sensitivities of each channel.
sensitivity0x
0001 1100
Sensitivity of CSx channel: {(sensitivity0x[7:0] x 0.025)} (%).
10.2.9 Calibration speed control register
Type: R/W
Address
41H
Register Name
cal_speed
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
rnd_bf_up
rnd_bf_down
sen_bf_up
sen_bf_down
Description
Calibration speed can be controlled by this ‘cal_speed’ register at BF mode.
Bit name
Reset value
Function
Sense channel down calibration speed at BF mode control bits.
00 : Fastest
01 : Fast
sen_bf_down
10
10 : Normal
11 : Slow
Sense channel up calibration speed at BF mode control bits.
00 : Fastest
01 : Fast
10 : Normal
11 : Slow
sen_bf_up
rnd_bf_down
rnd_bf_up
01
10
01
RND channel down calibration speed at BF mode control bits.
00 : Fastest
01 : Fast
10 : Normal
11 : Slow
RND channel up calibration speed at BF mode control bits.
00 : Fastest
01 : Fast
10 : Normal
11 : Slow
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
10.2.10 Calibration speed control register at BS mode
Type: R/W
Address
42H
Register Name
cal_BS_speed
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
rnd_bs_up
rnd_bs_down
sen_bs_up
sen_bs_down
Description
Calibration speed can be controlled by this ‘cal_BS_speed’ register at BS mode.
Bit name
Reset value
Function
Sense channel down calibration speed at BS mode control bits.
00 : Fastest
01 : Fast
sen_bs_down
10
10 : Normal
11 : Slow
Sense channel up calibration speed at BS mode control bits.
00 : Fastest
01 : Fast
10 : Normal
11 : Slow
sen_bs_up
rnd_bs_down
rnd_bs_up
01
10
01
RND channel down calibration speed at BS mode control bits.
00 : Fastest
01 : Fast
10 : Normal
11 : Slow
RND channel up calibration speed at BS mode control bits.
00 : Fastest
01 : Fast
10 : Normal
11 : Slow
10.2.11 LED luminance control register
Type: R/W
Address
43h
Register Name
PWM_ctrl1
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
pwm_d2
pwm_d4
pwm_d1
pwm_d3
44h
PWM_ctrl2
Description
LED luminance can be controlled by “PWM_ctrlx” register.
Bit name
Reset value
Function
The LED PWM control bits of Dx port.
0000 : The minimum low duty
pwm_dx
0000
1111 : The maximum low duty
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
10.2.12 Port mode control register
Type: R/W
Address
Register Name
port_mode
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
pmod_d
4
pmod_d
3
pmod_d
2
pmod_d
1
-
-
-
-
4Fh
Description
This register controls the mode of output port.
Bit name
Reset value
Function
Select the output port operation mode of each channel.
0 : Parallel output mode
pmod_dx
0
1 : LED drive mode
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
10.2.13 Sense, reference count read register
Type: R
Address
50h
Register Name
rd_ch_H1
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
rd_ch_H1
rd_ch_L1
-
-
-
-
-
-
rd_ch_L1
51h
touch_percent[25:18]
touch_percent[17:10]
touch_percent[9:2]
rd_ch_H2
Percent_H
Percent_M
Percent_L
rd_ch_H2
52h
53h
54h
56h
rd_ch_L2
-
-
-
-
-
-
rd_ch_L2
57h
Description
ANMG04 provides the special function to read sense count of each channels or reference count.
Bit name
Reset value
Function
Read channel indication register.
00000001 : -
00000010 : R.N.D channel
00000100 : CS1 channel
00001000 : CS2 channel
00010000 : CS3 channel
00100000 : CS4 channel
01000000 : -
rd_ch_H1
Read only
10000000 : -
Read channel indication register.
rd_ch_L1
Read only
01 : -
10 : -
The percent data of RND channel and sense channels.
[25:18] bits of the touch percent data.
touch_percent[24:17]
touch_percent[16:9]
touch_percent[8:1]
Read only
Read only
Read only
The percent data of RND channel and sense channels.
[17:10] bits of the touch percent data.
The percent data of RND channel and sense channels.
[9:2] bits of the touch percent data.
Read channel indication register.
00000001 : -
00000010 : R.N.D channel
00000100 : CS1 channel
00001000 : CS2 channel
00010000 : CS3 channel
00100000 : CS4 channel
01000000 : -
rd_ch_H2
rd_ch_L2
Read only
Read only
10000000 : -
Read channel indication register.
01 : -
10 : -
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
11 Recommended Circuit Diagram
11.1 ANMG04 (14 SOP)
ANMG04 (14 SOP) Application Example Circuit
ANMG04 is reset by internal reset circuit. VDD voltage rising time should be shorter than 100msec
for proper operation.
Normally, R.N.D pin dose not connection to anywhere. But, in radio frequency noise environment,
R.N.D pin must form a pattern line on PCB.
The VDD periodic voltage ripple over 50mV and the ripple frequency is lower than 10 kHz can cause
wrong sensitivity calibration. To prevent above problem, power (VDD, GND) line of touch circuit
should be separated from other circuit. Especially LED driver power line or digital switching circuit
power line certainly should be treated to be separated from touch circuit.
The CS patterns also should be routed as short as possible and the width of line might be about
0.25mm.
Parallel capacitor of CS pin could be useful in case detail sensitivity mediation is required such as for
complementation sensitivity difference between channels.
Serial connection resistor of CS pins may be used to avoid mal-function from external surge and ESD
and the closer to IC(ANMG04), the stronger immunity against mal-function and ESD is.
The CVDD capacitor that is between VDD and GND is an obligation.
CVDD and CLCAP capacitors should be located as close as possible from ANMG04.
The CS pattern routing should be formed by bottom metal (opposite metal of touch PAD).
The empty space of PCB must be filled with GND pattern to strengthen GND pattern and to prevent
external noise from interfere with sensing frequency.
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11.2 Example – Power Line Split Strategy PCB Layout
A. Not split power Line (Bad power line design)
The noise that is generated by AC load or relay can be loaded at 5V power line.
A big inductance might be appeared in case of the connection line between main board and display
board is too long, moreover the voltage ripple could be generated by LED (LCD) display driver at
VDD (5V).
B. Split power Line (One 5V regulator used) – Recommended
C. Split power Line (Separated 5V regulator used) – Strongly recommended
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
12 MECHANICAL DRAWING
12.1 Mechanical Drawing of ANMG04 (14 SOP)
13
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
MARKING DESCRIPTION
13.1 Marking Description of ANMG04 (14 SOP)
Company Code : ADS
AD Semiconductor
Device Code : ANMG 04 SG
Package Type
Channel Number
Touch Switch Group
Year / Week Code : YY WW
Manufacturing Week
Manufacturing Year
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ANMG04 (4-CH Auto Sensitivity Calibration Capacitive Touch Sensor)
NOTES:
LIFE SUPPORT POLICY
AD SEMICONDUCTOR’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE
SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND
GENERAL COUNSEL OF AD SEMICONDUCTOR CORPORATION
The ADS logo is a registered trademark of ADSemiconductor
ⓒ 2006 ADSemiconductor – All Rights Reserved
www.adsemicon.com
www.adsemicon.co.kr
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