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CHAPTER 16 SERIAL INTERFACE CHANNEL 0 (
µ
PD78014Y Subseries)
332
R/W
CSIM01 CSIM00 Serial Interface Channel 0 Clock Selection
0
×
Input clock to SCK0 pin from off-chip
1
0
8-bit timer register 2 (TM2) output
Note 2
1
1
Clock specified with bits 0 to 3 of timer clock select register 3 (TCL3)
R/W
CSIM CSIM CSIM PM25 P25 PM26 P26 PM27 P27
Operating
Start Bit
SI0/SB0/SDA0/ SO0/SBI/SDA1/
SCK0/SCL/P27
04
03
02
Mode
P25 Pin Function P26 Pin Function Pin Function
0
×
0
1
×
0
0
0
1
3-wire
MSB
SI0
Note 3
SO0
SCK0
1
serial I/O
LSB
(Input)
(CMOS
(CMOS
mode
output)
input/output)
Note 4 Note 4
SBI mode
MSB
P25
SB1
SCK0
1
0
0
×
×
0
0
0
1
(CMOS
(N-ch open-drain
(CMOS
input/output)
input/output)
input/output)
Note 4 Note 4
SB0
P26
1
0
0
×
×
0
1
(N-ch open-drain
(CMOS input/
input/output)
output)
Note 4 Note 4
2-wire serial MSB
P25
SB1/SDA1
SCK0/SCL
1
1
0
×
×
0
0
0
1
I/O mode or
(CMOS
(N-ch open-drain
(N-ch open-
I
2
C Bus
input/output)
input/output)
drain
Note 4 Note 4
Mode
SB0/SDA0
P26
input/ output)
1
0
0
×
×
0
1
(N-ch open-drain
(CMOS
input/output)
input/output)
R/W
WUP Wake-up Function Control
Note 5
0
Interrupt request signal generation with each serial transfer in any mode
1
Interrupt request signal generation when the address received after bus release (when CMDD = RELD = 1 in the
SBI mode, CMDD = 1 in the I
2
C bus mode) matches the slave address register (SVA) data when SBI mode or I
2
C
bus mode is used.
Symbol
<7>
<6>
<5>
4
3
2
1
0
Address
When Reset
R/W
CSIM0
CSIE0
COI
WUP CSIM04 CSIM03 CSIM02 CSIM01 CSIM00
FF60H
00H
R/W
Note 1
Figure 16-6. Serial Operating Mode Register 0 Format (1/2)
Notes
1. Bit 6 (COI) is a Read-Only bit.
2. When the I
2
C mode is used, the clock gets to 1/16 clock frequency which TO2 outputs.
3. Can be used as P25 (CMOS input) when used only for transmission.
4. Can be used freely as port function.
5. When the wake-up function is used (WUP = 1), set bit 5 of the interrupt timing specification register (SINT)
to 0.
Do not write data to serial I/O shift register 0 (SIO0) during WUP = 1.
Remark
×
: Don’t care
PM
××
: Port mode register
P
××
: Output latch of port
Содержание 78014Y Series
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