STMPE812 datasheet(6/51 Pages) STMICROELECTRONICS

部件名	STMPE812

功能描述	S-Touch® enhanced 4-wire resistive touchscreen controller with PWM

PDF	51 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

6 / 51 page

STMPE812 functional overview

STMPE812

6/51

Doc ID 17732 Rev 3

Note:

All I/O operates on VCC. All I/O tolerant up to 3.6 V, across VCC = 1.65 - 3.6 V.

8 kV HBM ESD on all touchscreen pins (+/- 8 kV vs GND).

0.5 µA max input leakage as input, across VCC range (GPIO, SCL/SDA).

4 µs hardware filter on the 4 GPIOs as input.

1.2

Typical application

Figure 3.

Typical application

+8 mA/-12 mA at

3.3 V

GPIO-1 / ADC (3.6 V tolerant within VCC valid

range, VIN_ADC must be less htan VCC)

VCC

Can be > 80 mA

load at touchscreen

and GPIO drive

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+

50 mA current limit

X+

Table 2.

Pin assignments (continued)

Name

Current capacity

Function

Obsolete

Product(s)

- Obsolete

Product(s)

STMPE812 数据表(PDF) 6 Page - STMicroelectronics

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