MC9S08SH8CSC View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

MC9S08SH8CSC

HCS08 Microcontrollers

Freescale Semiconductor 

Chapter 14 Serial Communications Interface (S08SCIV4)

14.1.3 Block Diagram

Figure 14-2 shows the transmitter portion of the SCI.

INTERNAL BUS

(WRITE-ONLY)

SCID – Tx BUFFER

11-BIT TRANSMIT SHIFT REGISTER

M

LOOPS

RSRC

LOOP

CONTROL

1 × BAUD

RATE CLOCK

H876543210L

SHIFT DIRECTION

TXINV

TO RECEIVE

DATA IN

TO TxD PIN

T8

PE

PARITY

PT

GENERATION

TE

SBK

TXDIR

BRK13

TRANSMIT CONTROL

SCI CONTROLS TxD

TxD DIRECTION

TO TxD

PIN LOGIC

TDRE

TIE

TC

TCIE

Figure 14-2. SCI Transmitter Block Diagram

Tx INTERRUPT

REQUEST

MC9S08SH8 MCU Series Data Sheet, Rev. 3

206

Freescale Semiconductor

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