
CHAPTER 16 SERIAL INTERFACE CHANNEL 0 (
μ
PD78018FY SUBSERIES)
The
μ
PD78018FY subseries is provided with two channels of clocked serial interfaces.
The differences between channels 0 and 1 are as indicated in the table below (for the details of serial interface
channel 1, refer to
CHAPTER 17 SERIAL INTERFACE CHANNEL 1
).
Table 16-1. Differences between Channels 0 and 1
Serial Transfer Mode
3-wire serial I/O
Clock selection
Transfer method
Transfer end flag
2-wire serial I/O
I
2
C bus (Inter IC Bus)
Channel 0
f
X
/2
2
Note
, f
X
/2
3
, f
X
/2
4
, f
X
/2
5
, f
X
/2
6
,
f
X
/2
7
, f
X
/2
8
, f
X
/2
9
, external clock,
TO2 output
MSB first/LSB first selectable
Serial interface channel 0
transfer end interrupt request
flag (CSIIF0)
Available
Channel 1
f
X
/2
2
Note
, f
X
/2
3
, f
X
/2
4
, f
X
/2
5
, f
X
/2
6
,
f
X
/2
7
, f
X
/2
8
, f
X
/2
9
, external clock,
TO2 output
MSB first/LSB first selectable
Automatic transmit/receive
function
Serial interface channel 1
transfer end interrupt request
flag (CSIIF1 and TRF)
Not available
Note
Can be set only when the main system clock oscillates at 4.19 MHz or less.
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