MC68HC908GP32 Datasheet, PDF (245/410 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

Freescale Semiconductor, Inc.
Serial Communications Interface Module (SCI)
Functional Description
18.5.1 Data Format
The SCI uses the standard non-return-to-zero mark/space data format
illustrated in Figure 18-3.
START
BIT BIT 0
BIT 1
BIT 2
8-BIT DATA FORMAT
BIT M IN SCC1 CLEAR
BIT 3 BIT 4 BIT 5 BIT 6
PARITY
BIT
BIT 7
STOP
BIT
NEXT
START
BIT
START
BIT BIT 0
BIT 1
BIT 2
9-BIT DATA FORMAT
BIT M IN SCC1 SET
BIT 3 BIT 4 BIT 5 BIT 6
PARITY
BIT
NEXT
START
BIT 7 BIT 8 STOP BIT
BIT
Figure 18-3. SCI Data Formats
18.5.2 Transmitter
Figure 18-4 shows the structure of the SCI transmitter.
The baud rate clock source for the SCI can be selected via the
configuration bit, SCIBDSRC. Source selection values are shown in
Figure 18-4.
MC68HC908GP32•MC68HC08GP32 — Rev. 6
MOTOROLA
Serial Communications Interface Module (SCI)
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Technical Data
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