ST72321J9-Auto STMicroelectronics, ST72321J9-Auto Datasheet - Page 142

• Manufacturer Part Number: ST72321J9-Auto
• Description: 8-bit MCU for automotive with 60 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
• Manufacturer: STMicroelectronics

Specifications of ST72321J9-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

Serial communications interface (SCI)
Figure 64. SCI baud rate and extended prescaler block diagram
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f
CPU
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Framing error
A framing error is detected when:
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When the framing error is detected:
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The FE bit is reset by a SCISR register read operation followed by a SCIDR register read
operation.
The stop bit is not recognized on reception at the expected time, following either a de-
synchronization or excessive noise.
A break is received.
The FE bit is set by hardware.
Data is transferred from the Shift register to the SCIDR register.
No interrupt is generated. However this bit rises at the same time as the RDRF bit
which itself generates an interrupt.
/PR
EXTENDED TRANSMITTER PRESCALER REGISTER
EXTENDED RECEIVER PRESCALER REGISTER
EXTENDED PRESCALER TRANSMITTER RATE CONTROL
EXTENDED PRESCALER RECEIVER RATE CONTROL
SCP1
CONVENTIONAL BAUD RATE GENERATOR
SCP0 SCT2 SCT1 SCT0 SCR2 SCR1 SCR0
TRANSMITTER RATE
EXTENDED PRESCALER
CONTROL
Doc ID 13829 Rev 1
RECEIVER RATE
CONTROL
SCIERPR
SCIBRR
SCIETPR
ST72321xx-Auto
TRANSMITTER
RECEIVER
CLOCK
CLOCK