ST72321AR9-Auto STMicroelectronics, ST72321AR9-Auto Datasheet - Page 135

• Manufacturer Part Number: ST72321AR9-Auto
• Description: 8-bit MCU for automotive with 60 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
• Manufacturer: STMicroelectronics

Specifications of ST72321AR9-Auto

• Hdflash Endurance: 100 cycles, data retention 20 years
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• 4 Power Saving Modes: Halt, Active Halt, Wait and Slow

ST72321xx-Auto
15
15.1
15.2
Serial communications interface (SCI)
Introduction
The Serial Communications Interface (SCI) offers a flexible means of full-duplex data
exchange with external equipment requiring an industry standard NRZ asynchronous serial
data format. The SCI offers a very wide range of baud rates using two baud rate generator
systems.
Main features
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Full duplex, asynchronous communications
NRZ standard format (Mark/Space)
Dual baud rate generator systems
Independently programmable transmit and receive baud rates up to 500K baud
Programmable data word length (8 or 9 bits)
Receive buffer full, Transmit buffer empty and End of Transmission flags
2 receiver wake-up modes:
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Muting function for multiprocessor configurations
Separate enable bits for Transmitter and Receiver
4 error detection flags:
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5 interrupt sources with flags:
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Parity control:
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Reduced power consumption mode
Address bit (MSB)
Idle line
Overrun error
Noise error
Frame error
Parity error
Transmit data register empty
Transmission complete
Receive data register full
Idle line received
Overrun error detected
Transmits parity bit
Checks parity of received data byte
Doc ID 13829 Rev 1
Serial communications interface (SCI)
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