MC68HC912D60 Datasheet, PDF (239/432 Pages) Freescale Semiconductor, Inc – M68HC12 Microcontrollers

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
Figure 15-2. Serial Communications Interface Block Diagram
15.4.1 Data Format
The serial data format requires the following conditions:
• An idle-line in the high state before transmission or reception of a
message.
68HC(9)12D60 — Rev 4.0
MOTOROLA
Multiple Serial Interface
For More Information On This Product,
Go to: www.freescale.com
Advance Information
239