STLUX385ATR datasheet(24/99 Pages) STMICROELECTRONICS

24 / 99 page

Product overview

STLUX385A

24/98

DocID024387 Rev 2

3.7.3

Inter-integrated circuit interface (I2C)

C (inter-integrated circuit) bus interface serves as an interface between the microcontroller

and the serial I

C bus. It provides multi-master capability, and controls all I

C bus-specific

sequencing, protocol, arbitration and timing. It supports standard and fast speed modes.

•

Parallel-bus/I

C protocol converter

•

Multi-master capability: the same interface can act as master or slave

•

C master features:

–

Clock generation

–

Start and stop generation

•

C slave features:

–

Programmable I

C address detection

–

Stop bit detection

•

Generation and detection of 7-bit/10-bit addressing and general call

•

Supports different communication speeds:

–

Standard speed (up to 100 kHz)

–

Fast speed (up to 400 kHz)

•

Status flags:

–

Transmitter/receiver mode flag

–

End-of-byte transmission flag

–I

C busy flag

•

Error flags:

–

Arbitration lost condition for master mode

–

Acknowledgment failure after address/ data transmission

–

Detection of misplaced start or stop condition

–

Overrun/underrun if clock stretching is disabled

•

Interrupt sources:

–

Communication interrupt

–

Error condition interrupt

–

Wakeup from Halt interrupt

•

Wakeup capability:

–

MCU wakes up from low power mode on address detection in slave mode

3.8

Analog to digital converter (ADC)

The STLUX385A includes a 10-bit successive approximation ADC with 8 multiplexed input

channels. The analog input signal can be amplified before conversion by a selectable gain

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