MC912DG128ACPVE Datasheet, PDF (279/478 Pages) Freescale Semiconductor, Inc – Upward compatible with M68HC11 instruction set

Freescale Semiconductor, Inc.
Multiple Serial Interface
Serial Communication Interface (SCI)
MCLK
BAUD RATE
CLOCK
SCI TRANSMITTER
MSB
LSB
DIVIDER
Rx Baud Rate
PARITY
GENERATOR
10-11 Bit SHIFT REG
TxD BUFFER/SCxDRL
SCxBD/SELECT
Tx Baud Rate
TxD
SCxCR1/SCI CTL 1
TxMTR CONTROL
DATA BUS
SCxCR2/SCI CTL 2
SCxSR1/INT STATUS
RxD
INT REQUEST LOGIC
TO
INTERNAL
LOGIC
PARITY
DETECT
DATA RECOVERY
SCI RECEIVER
MSB
LSB
10-11 BIT SHIFT REG
TxD BUFFER/SCxDRL
SCxCR1/SCI CTL 1
WAKE-UP LOGIC
SCxSR1/INT STATUS
INT REQUEST LOGIC
SCxCR2/SCI CTL 2
HC12A4 SCI BLOCK
Figure 16-2. Serial Communications Interface Block Diagram
MC68HC912DT128A — Rev 4.0
MOTOROLA
Multiple Serial Interface
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Technical Data
279