STMPE812ABJR STMicroelectronics, STMPE812ABJR Datasheet - Page 18

• 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 registers
6.1
18/53
Table 7.
Auto-increment/non auto-increment address
The STMPE812A supports auto-increment accesses on all, except for TSC data register
(0x44). While accessing auto-increment register location, consecutive read/write access
data from the consecutive registers. Note that for register accesses started on auto-
incremental addresses, the address 0x44 is skipped.
For example:
Write register address (0x40)
Read data (data of 0x40)
Read data (data of 0x41)
Read data (data of 0x42)
Read data (data of 0x43)
Read data (data of 0x45) <= 0x44 is skipped.
Address
Registers from 0x50 - 0x5F are accessible only if “PWM_OFF” bit in SYS_CTRL is set to “0”.
0x44
0x50
0x51
Register summary map table (continued)
PWM_CLOCK_
Register name
PWM_CTRL1
TSC_DATA
DIV
Doc ID 18225 Rev 4
Bit
8
8
8
Type
R/W
R/W
R
Reset value
0x00
0x00
-
Non auto-increment address
Master control of PWM
PWM clock divider
channel 1
Function
STMPE812A