365
CHAPTER 18 SERIAL INTERFACE CHANNEL 0 (
µ
PD78078Y Subseries)
The
µ
PD78078Y Subseries incorporates three channels of serial interfaces. Differences between channels 0,
1, and 2 are as follows (Refer to CHAPTER 19 SERIAL INTERFACE CHANNEL 1 for details of the serial interface
channel 1. Refer to CHAPTER 20 SERIAL INTERFACE CHANNEL 2 for details of the serial interface channel 2).
Table 18-1. Differences between Channels 0, 1, and 2
Serial Transfer Mode
Channel 0
f
XX
/2, f
XX
/2
2
, f
XX
/2
3
, f
XX
/
2
4
, f
XX
/2
5
, f
XX
/2
6
, f
XX
/2
7
,
f
XX
/2
8
, external clock,
TO2 output
MSB/LSB switchable
as the start bit
Serial transfer end
interrupt request flag
(CSIIF0)
Channel 1
f
XX
/2, f
XX
/2
2
, f
XX
/2
3
, f
XX
/
2
4
, f
XX
/2
5
, f
XX
/2
6
, f
XX
/2
7
,
f
XX
/2
8
, external clock,
TO2 output
MSB/LSB switchable
as the start bit
Automatic transmit/
receive function
Serial transfer end
interrupt request flag
(CSIIF1)
Channel 2
External clock, baud
rate generator output
MSB/LSB switchable
as the start bit
Serial transfer end
interrupt request flag
(SRIF)
Clock selection
Transfer method
Transfer end flag
I
2
C bus (Inter IC Bus)
2-wire serial I/O
UART
(Asynchronous serial interface)
Use possible
None
None
None
Use possible
3-wire serial I/O
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