STM8L151X6 datasheet(23/146 Pages) STMICROELECTRONICS

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STM8L151x6/8 STM8L152x6/8

Functional overview

It is clocked by the internal LSI RC clock source, and thus stays active even in case of a

CPU clock failure.

3.16

Beeper

The beeper function outputs a signal on the BEEP pin for sound generation. The signal is in

the range of 1, 2 or 4 kHz.

3.17

Communication interfaces

3.17.1

SPI

The serial peripheral interfaces (SPI1 and SPI2) provide half/ full duplex synchronous serial

communication with external devices.

•

Maximum speed: 8 Mbit/s (fSYSCLK/2) both for master and slave

•

Full duplex synchronous transfers

•

Simplex synchronous transfers on 2 lines with a possible bidirectional data line

•

Master or slave operation - selectable by hardware or software

•

Hardware CRC calculation

•

Slave/master selection input pin

Note:

SPI1 and SPI2 can be served by the DMA1 Controller.

3.17.2

I2C

The I2C bus interface (I2C1) provides multi-master capability, and controls all I²C bus-

specific sequencing, protocol, arbitration and timing.

•

Master, slave and multi-master capability

•

Standard mode up to 100 kHz and fast speed modes up to 400 kHz.

•

7-bit and 10-bit addressing modes.

•

SMBus 2.0 and PMBus support

•

Hardware CRC calculation

Note:

I2C1 can be served by the DMA1 Controller.

STM8L151X6 数据表(PDF) 23 Page - STMicroelectronics

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