STMPE812ABJR STMicroelectronics, STMPE812ABJR Datasheet - Page 6

• Manufacturer Part Number: STMPE812ABJR
• Description: Touch Screen Converters & Controllers Touchscreen cntrlr S-Touch
• Manufacturer: STMicroelectronics
• Type: Resistive Touch Controllersr

Specifications of STMPE812ABJR

• Rohs: yes
• Input Type: 1 TSC
• Data Rate: 400 kbps
• Resolution: 12 bit
• Interface Type: 4-wire, I2C
• Supply Voltage: 1.65 V to 3.6 V
• Supply Current: 100 uA
• Operating Temperature: - 40 C to + 85 C
• Package / Case: CSP-12
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 1.65 V

STMPE812A functional overview
Note:
6/53
Table 2.
All I/O operates on V
8 kV HBM ESD on all touchscreen pins (+/- 8 kV vs GND)
0.5 µA max input leakage as input, across V
4 µs hardware filter on the 3 GPIOs as input
Pin
C1
B1
A1
B2
A2
A3
Pin assignments (continued)
Name
SDA
V
X+
P2
P1
P0
CC
CC
. All I/O tolerant up to 3.6 V, across V
load at touchscreen
50 mA current limit
Current capacity
+8 mA/-12 mA at
+8 mA/-12 mA at
+8 mA/-12 mA at
Can be > 80 mA
and GPIO drive
Doc ID 18225 Rev 4
-4 mA
3.3 V
3.3 V
3.3 V
CC
I
V
GPIO-2/ INT (3.6 V tolerant within V
range)
GPIO-1/ADC/PWM (3.6 V tolerant within V
range except VIN_ADC must be less than V
GPIO-0/ADDR (3.6 V tolerant within V
range)
1.65 - 3.6 V core/IO supply (0.1 µF decoupling
cap)
No low-voltage detection for POR
20 µs POR from power stable
X+
2
CC
C data (fail safe, tolerant to 3.6 V regardless of
range (GPIO, SCL/SDA)
)
CC
= 1.65 - 3.6 V
Function
CC
STMPE812A
CC
valid
valid
CC
CC
valid
)