ST72124J View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST72124J

8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES

STMicroelectronics 

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ST72334J/N, ST72314J/N, ST72124J

SERIAL COMMUNICATIONS INTERFACE (Cont’d)

Figure 52. SCI Block Diagram

TDO

RDI

Write

Transmit Data Register (TDR)

Read

(DATA REGIST ER) DR

Received Data Register (RDR)

Transmit Shift Register

Received Shift Register

CR1

R8 T8 - M WAKE - -

-

TRA NSMIT

CONT ROL

WAKE

UP

UNIT

CR2

TIE TCIE RIE ILIE TE RE RWU SBK

RECEIVE R

CONTRO L

RECE IVER

CLOCK

SR

TDRE TC RDRF IDLE OR NF FE -

SCI

IN TERRUPT

CONTRO L

TRANSMIT TER

CLOCK

fCPU

/16

/2

/PR

TRANS MITTER RATE

CONTRO L

BRR

SCP1SCP0SCT2 SCT1 SCT0 SCR2 SCR1SCR0

RECEIVER RATE

CONTROL

CONVEN TIONAL BAUD RATE GENERATOR

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