ST72321B STMICROELECTRONICS [STMicroelectronics], ST72321B Datasheet - Page 104

• Manufacturer Part Number: ST72321B
• Description: 64/44-pin 8-bit MCU with 32 to 60K Flash/ROM, ADC, five timers, SPI, SCI, I2C interface
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

SERIAL COMMUNICATIONS INTERFACE (Cont’d)
Figure 63. SCI Baud Rate and Extended Prescaler Block Diagram
104/187
f
CPU
/16
/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 SCR1SCR0
TRANSMITTER RATE
EXTENDED PRESCALER
CONTROL
RECEIVER RATE
CONTROL
SCIBRR
SCIERPR
SCIETPR
RECEIVER
TRANSMITTER
CLOCK
CLOCK