STMPE812 datasheet(36/51 Pages) STMICROELECTRONICS

Part #	STMPE812

Description	S-Touch® enhanced 4-wire resistive touchscreen controller with PWM

PDF	51 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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36 / 51 page

Touchscreen controller

STMPE812

36/51

Doc ID 17732 Rev 3

Table 13.

Data valid status byte structure

Data Valid Status Read in data port is useful together with Pen Down mode whereby

accessing the ISR is not needed so as to achieve the best I2C bandwidth efficiency (i.e.

minimal I2C transactions).

Note:

Reading the Data valid Status byte also clears the ISR.

Table 12.

Touchscreen controller data register

TSCDetectConfig2

Number of

bytes to

read from

TSCData

Byte0

Byte1

Byte2

Byte3

Byte4

OpMode

StatusRead

[11:4] of X

[3:0] of X

[11:8] of Y

[7:0] of Y

[7:0] of Z

[11:4] of X

[3:0] of X

[11:8] of Y

[7:0] of Y

Data Valid

Status

[11:4] of X

[3:0] of X

[11:8] of Y

[7:0] of Y

[7:0] of Z

Data Valid

Status

[11:4] of X

[3:0] of X

[11:8] of Y

[7:0] of Y

RESERVED

DATA VALID

RESERVED

[7:2]Bit[0]: Reserved

[1]

“1’ Touch data available/ valid

‘0’ Touch data not available/ not valid

Bit reset upon read.

Obsolete

Product(s)

- Obsolete

Product(s)

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