AN2466 datasheet(6/13 Pages) STMICROELECTRONICS

Part #	AN2466

Description	STMPE801 - Hardware Interface guide

PDF	13 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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6 / 13 page

Pin description of STMPE801

AN2466

6/13

Figure 3.

STMPE801 Slave address selection

The I2C Read/

is done byte by byte. The R/

bit is added as the LSB to the 7-bit

slave address to make up one byte to be sent through the I2C interface from the master.

Figure 4.

I2C Read/write transaction

Once the slave address is configured and responding correctly, the internal registers can be

accessed through I2C Interface.

The SCLK and SDATA are open drain pins and should be provided with a pull-up resistor to

VCC. The VCC can be selected based on the operating voltage of the I2C host, for example

as either 1.8 V or 3.3 V without any need for an intermediate level translator stage.

Table 2.

Valid I2C Slave address

ADDRESS

7-bit Slave Address

8-bit format to be used

(including R/

bit in LSB)

41h (1000001b)

82h

44h (1000100b)

88h

STMPE801

ADDR0

SCLK

SDAT

SCLK

SDAT

GND

VCC

Write

AN2466 Datasheet(PDF) 6 Page - STMicroelectronics