NEC 78014Y Series User Manual page 273

Symbol
CSIM0 CSIE0
R/W CSIM01 CSIM00 Serial Interface Channel 0 Clock Selection
R/W CSIM CSIM CSIM PM25 P25 PM26 P26 PM27 P27
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R/W WUP Wake-up Function Control
Notes
Remark
CHAPTER 15 SERIAL INTERFACE CHANNEL 0 ( µ PD78014 Subseries)
Figure 15-5. Serial Operating Mode Register 0 Format (1/2)
<7> <6> <5> 4
COI WUP CSIM04 CSIM03 CSIM02 CSIM01 CSIM00
×
0 Input clock to SCK0 pin from off-chip
1 0 8-bit timer register 2 (TM2) output
1 1 Clock specified with bits 0 to 3 of timer clock select register 3 (TCL3)
04 03 02
× ×
0 0 1 0 0
1
Note 3 Note 3
× ×
1 0 0 0 0
Note 3 Note 3
× ×
1 0 0
Note 3 Note 3
× ×
1 1 0 0 0
Note 3 Note 3
× ×
1 0 0
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)
matches the slave address register (SVA) data in SBI mode
1. Bit 6 (COI) is a Read-Only bit.
2. Can be used as P25 (CMOS input) when used only for transmission.
3. Can be used freely as port function.
4. When the wake-up function is used (WUP = 1), bit 5 (SIC) of the interrupt timing select register (SINT)
must be set to 0.
×
: don't care
PMxx: Port mode register
Pxx : Output latch of port
3 2 1 0
Operating Start Bit
Mode
0 1 3-wire MSB
serial I/O LSB
mode
SBI mode MSB
0 1
0 1
2-wire MSB
0 1 serial I/O
mode
0 1
Note 4
Address When Reset R/W
Note 1
FF60H 00H R/W
SI0/SB0/P25 SO0/SBI/P26
Pin Function Pin Function
SI0 Note 2 SO0
(input) (CMOS
output)
P25 SB1
(CMOS (N-ch open-drain (CMOS
input/output) input/output)
SB0 P26
(N-ch open-drain (CMOS input/
input/output) output)
P25 SB1
(CMOS (N-ch open-drain (N-ch open-
input/output) input/output)
SB0 P26
(N-ch open-drain (CMOS
input/output) input/output)
SCK0/P27
Pin Function
SCK0
(CMOS
input/output)
SCK0
input/output)
SCK0
drain
input/output)
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