mc68hc908as60 Freescale Semiconductor, Inc, mc68hc908as60 Datasheet - Page 226

• Manufacturer Part Number: mc68hc908as60
• Description: Mc68hc908as60 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Serial Communications Interface (SCI)
17.5 Functional Description
Technical Data
RxD
CGMXCLK
SCTIE
SCRIE
RWU
TCIE
SBK
ILIE
TE
RE
SHIFT REGISTER
REGISTER
SCI DATA
RECEIVE
Figure 17-1
full-duplex, asynchronous, NRZ serial communication between the MCU
and remote devices, including other MCUs. The transmitter and receiver
of the SCI operate independently, although they use the same baud rate
generator. During normal operation, the CPU monitors the status of the
SCI, writes the data to be transmitted, and processes received data.
4
CONTROL
WAKEUP
Figure 17-1. SCI Module Block Diagram
Freescale Semiconductor, Inc.
For More Information On This Product,
SCRF
SCTE
IDLE
SCALER
TC
ENSCI
Serial Communications Interface (SCI)
PRE-
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shows the structure of the SCI module. The SCI allows
GENERATOR
BAUD RATE
CONTROL
RECEIVE
16
INTERNAL BUS
LOOPS
BKF
RPF
DATA SELECTION
CONTROL
OR
NF
FE
PE
FLAG
CONTROL
WAKE
ILTY
LOOPS
PEN
PTY
ENSCI
M
TRANSMIT
CONTROL
MC68HC908AS60 — Rev. 1.0
SHIFT REGISTER
TXINV
ORIE
NEIE
FEIE
PEIE
R8
REGISTER
TRANSMIT
T8
SCI DATA
TxD