mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 255

• Manufacturer Part Number: mc68hc908sr12
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
CGMXCLK
CGMXCLK is from CGM module
IT12 = f
IT12
RxD
SL = 0 => X = A
SL = 1 => X = B
BUS
SCRIE
SCTIE
TCIE
RWU
SCIBDSRC
SBK
ILIE
TE
RE
CONFIG
A
B
FROM
SL
SHIFT REGISTER
X
REGISTER
SCI DATA
RECEIVE
÷ 4
CONTROL
WAKEUP
SCTE
SCRF
IDLE
SCALER
TC
ENSCI
Figure 16-1. SCI Module Block Diagram
PRE-
Serial Communications Interface (SCI)
DIVIDER
BAUD
÷ 16
CONTROL
RECEIVE
INTERNAL BUS
LOOPS
BKF
RPF
DATA SELECTION
CONTROL
OR
NF
FE
PE
FLAG
CONTROL
WAKE
ILTY
PEN
PTY
LOOPS
Serial Communications Interface (SCI)
ENSCI
M
TRANSMIT
CONTROL
SHIFT REGISTER
DMARE
DMATE
TXINV
ORIE
NEIE
FEIE
PEIE
R8
T8
REGISTER
TRANSMIT
SCI DATA
Functional Description
Data Sheet
TxD
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