STMPE16M31 datasheet(11/85 Pages) STMICROELECTRONICS

11 / 85 page

STMPE16M31, STMPE24M31

I2C interface module

Doc ID 16174 Rev 4

11/85

I2C interface module

The STMPE24M31/16M31 has 2 physical I2C address pins, allowing 4 different I2C address

settings.

The features that are supported by the I2C interface module are the following ones:

–I2C slave device

–

Operates at VCC (tolerant to 3.3 V signaling)

–

Compliant to Philips I2C specification version 2.1

–

Supports standard (up to 100 kbps) and fast (up to 400 kbps) modes

–

7-bit and 10-bit device addressing modes

–

General call

–

Start/restart/stop

The features that are not supported are:

–

Hardware general call

–

CBUS compatibility

–

High-speed (3.4 Mbps) mode

2.1

Device operation

Start condition

A Start condition is identified by a falling edge of SDA while SCL is stable at high state. A

Start condition must precede any data/command transfer. The device continuously monitors

for a Start condition and does not respond to any transaction unless one is encountered.

Stop condition

A Stop condition is identified by a rising edge of SDA while SCL is stable at high state. A

Stop condition terminates the communication between the slave device and bus master. A

read command that is followed by NoAck can be followed by a Stop condition to force the

slave device into idle mode. When the slave device is in idle mode, it is ready to receive the

next I2C transaction. A Stop condition at the end of a write command stops the write

operation to registers.

Table 5.

I2C address pins

Address 1

Address 0

I2C address

0x58

0x59

0x5A

0x5B

Obsolete

Product(s)

- Obsolete

Product(s)

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