MC908GR8CDWE Datasheet, PDF (242/408 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Freescale Semiconductor, Inc.
Serial Communications Interface (SCI)
INTERNAL BUS
SCIBDSRC
FROM
CONFIG2
CGMXCLK
IT12
A
B
SL
X
SL = 0 => X = A
SL = 1 => X = B
SCP1
SCP0
÷4
PRE-
BAUD
SCALER DIVIDER
SCR1
SCR2
SCR0
÷ 16
PE1/RxD
BKF
RPF
DATA
RECOVERY
ALL 0s
SCI DATA REGISTER
11-BIT
RECEIVE SHIFT REGISTER
H8 7 6 5 4 3 2 1 0 L
M
WAKE
ILTY
PEN
PTY
WAKEUP
LOGIC
PARITY
CHECKING
IDLE
ILIE
DMARE
SCRF
SCRIE
DMARE
SCRF
SCRIE
DMARE
OR
ORIE
NF
NEIE
FE
FEIE
PE
PEIE
SCRF
IDLE
R8
ILIE
SCRIE
DMARE
OR
ORIE
NF
NEIE
FE
FEIE
PE
PEIE
RWU
Figure 18-5. SCI Receiver Block Diagram
Technical Data
242
MC68HC908GR8 — Rev 4.0
Serial Communications Interface (SCI)
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