ST72325K6-Auto datasheet(7/243 Pages) STMICROELECTRONICS | SCI asynchronous serial interface

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ST72325K6-Auto Datasheet(PDF) 7 Page - STMicroelectronics

Part #	ST72325K6-Auto

Description	SCI asynchronous serial interface

Download	243 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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ST72325xxx-Auto

Contents

Doc ID 13770 Rev 3

7/243

14.8.3

Data I/O register (SPIDR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

15

Serial communications interface (SCI) . . . . . . . . . . . . . . . . . . . . . . . . 139

15.1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

15.2

Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

15.3

General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

15.4

Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

15.4.1

Serial data format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

15.4.2

Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

15.4.3

Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

15.5

Low power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

15.6

Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

15.7

SCI registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

15.7.1

Status register (SCISR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

15.7.2

Control register 1 (SCICR1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

15.7.3

Control register 2 (SCICR2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

15.7.4

Data register (SCIDR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

15.7.5

Baud rate register (SCIBRR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

15.7.6

Extended receive prescaler division register (SCIERPR) . . . . . . . . . . 156

15.7.7

Extended transmit prescaler division register (SCIETPR) . . . . . . . . . . 157

16

I2C bus interface (I2C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

16.1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

16.2

Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

16.2.1

I2C master features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

16.2.2

I2C slave features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

16.3

General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

16.3.1

Mode selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

16.3.2

Communication flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

16.3.3

SDA/SCL line control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

16.4

Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

16.4.1

Slave mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

16.4.2

Master mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

16.5

Low power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

16.6

Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

16.7

Register description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

Similar Part No. - ST72325K6-Auto

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STMicroelectronics	ST72325K6B3	3Mb / 197P	8-bit MCU with 16 to 60K Flash/ROM, ADC, CSS, 5 timers, SPI, SCI, I2C interface
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