STMPE812ABJR datasheet(5/53 Pages) STMICROELECTRONICS

Part #	STMPE812ABJR

Description	Integrated 4-wire resistive touchscreen controller, pen-down/real-time mode, fullyautonomous

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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5 / 53 page

STMPE812A

STMPE812A functional overview

Doc ID 18225 Rev 4

5/53

1.1

Pin configuration and functions

Figure 2.

Pin configuration (top through view)

Table 2.

Pin assignments

Name

Current capacity

Function

B3

Y+

50 mA current limit

Y+

C3

X-

50 mA current limit

X-

D3

Y-

50 mA current limit

Y-

C2

RESETN

+8 mA/-12 mA at

3.3 V

Active low RESET (3.6 V tolerant within VCC valid

range). Typical reset filter duration is 788 ns at

1.8 V VCC.

D2

GND

Can be > 80 mA

load at touchscreen

and GPIO drive

Ground

D1

SCL

-4 mA

I2C clock (fail safe, tolerant to 3.6 V regardless of

VCC)

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