ST72321J9 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST72321J9

8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE

STMicroelectronics 

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ST72321

SERIAL COMMUNICATIONS INTERFACE (Cont’d)

Figure 62. SCI Baud Rate and Extended Prescaler Block Diagram

EXTENDED PRESCALER TRANSMITTER RATE CONTROL

SCIETPR

EXTENDED TRANSMITTER PRESCALER REGISTER

SCIERPR

EXTENDED RECEIVER PRESCALER REGISTER

EXTENDED PRESCALER RECEIVER RATE CONTROL

EXTENDED PRESCALER

TRANSMITTER

CLOCK

RECEIVER

CLOCK

fCPU

/16

/PR

TRANSMITTER RATE

CONTROL

SCIBRR

SCP1SCP0 SCT2 SCT1 SCT0 SCR2 SCR1SCR0

RECEIVER RATE

CONTROL

CONVENTIONAL BAUD RATE GENERATOR

104/185

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