MC908KX2MDWE Datasheet, PDF (114/210 Pages) Freescale Semiconductor, Inc – High-performance M68HC08 architecture, Fully upward-compatible object code with M6805, M146805, and M68HC05 Families

Serial Communications Interface Module (SCI)
INTERNAL BUS
SCI DATA
REGISTER
RxD
RECEIVE
SHIFT REGISTER
SCI DATA
REGISTER
TRANSMIT
SHIFT REGISTER
TxD
SCTIE
TCIE
SCRIE
ILIE
TE
RE
RWU
SBK
BAUDCLK
TXINV
R8
T8
SCTE
TC
SCRF
IDLE
OR
NF
FE
PE
LOOPS
LOOPS
ENSCI
ORIE
NEIE
FEIE
PEIE
WAKEUP
CONTROL
RECEIVE
CONTROL
FLAG
CONTROL
TRANSMIT
CONTROL
BKF
ENSCI
RPF
÷4
PRE- BAUD RATE
SCALER GENERATOR
M
WAKE
ILTY
PEN
PTY
CGMXCLK A
BUSCLK
B
S
SCIBDSRC
÷ 16
DATA SELECTION
CONTROL
Figure 12-3. SCI Module Block Diagram
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 Data Sheet, Rev. 2.1
114
Freescale Semiconductor