
CHAPTER 2 PIN FUNCTIONS
Preliminary User’s Manual U16541EJ1V0UM
53
(3/4)
Pin Name
I/O
Function
Alternate Function
NMI
Input
External interrupt input (non-maskable, analog noise elimination)
P02
RD
Output
Read strobe signal output for external memory
PCT4
REGC
Connection of regulator output stabilization capacitance
RESET
Input
System reset input
RTP00
P50/TIQ01/KR0/TOQ01
RTP01
P51/TIQ02/KR1/TOQ02
RTP02
P52/TIQ03/KR2/TOQ03/DDI
Note 1
RTP03
P53/SIB2/KR3/TIQ00/TOQ00/
DDO
Note 1
RTP04
P54/SOB2/KR4/DCK
Note 1
RTP05
Output
Real-time output port
P55/SCKB2/KR5/DMS
Note 1
RXDA0
Serial receive data input (UARTA0)
P31/INTP7/SIB4
RXDA1
Serial receive data input (UARTA1)
P91/A1/KR7/SCL02
Note 2
RXDA2
Input
Serial receive data input (UARTA2)
P39/SCL00
Note 2
SCKB0
Serial clock I/O (CSIB0)
P42
SCKB1
Serial clock I/O (CSIB1)
P99/A9
SCKB2
Serial clock I/O (CSIB2)
P55/KR5/RTP05/DMS
Note 1
SCKB3
Serial clock I/O (CSIB3)
P912/A12
SCKB4
I/O
Serial clock I/O (CSIB4)
P32/ASCKA0/TIP00/TOP00
SCL00
Note 2
Serial clock I/O (I
2C00)
P39/RXDA2
SCL01
Note 2
Serial clock I/O (I
2C01)
P41/SOB0
SCL02
Note 2
I/O
Serial clock I/O (I
2C02)
P91/A1/KR7/RXDA1
SDA00
Note 2
Serial transmit/receive data I/O (I
2C00)
P38/TXDA2
SDA01
Note 2
Serial transmit/receive data I/O (I
2C01)
P40/SIB0
SDA02
Note 2
I/O
Serial transmit/receive data I/O (I
2C02)
P90/A0/KR6/TXDA1
SIB0
Serial receive data input (CSIB0)
P40/SDA01
Note 2
SIB1
Serial receive data input (CSIB1)
P97/A7/TIP20/TOP20
SIB2
Serial receive data input (CSIB2)
P53/KR3/TIQ00/TOQ00/RTP03/
DDO
Note 1
SIB3
Serial receive data input (CSIB3)
P910/A10
SIB4
Input
Serial receive data input (CSIB4)
P31/RXDA0/INTP7
SOB0
Serial transmit data output (CSIB0)
P41/SCL01
Note 2
SOB1
Serial transmit data output (CSIB1)
P98/A8
SOB2
Serial transmit data output (CSIB2)
P54/KR4/RTP04/DCK
Note 1
SOB3
Serial transmit data output (CSIB3)
P911/A11
SOB4
Output
Serial transmit data output (CSIB4)
P30/TXDA0
TIP00
External event/clock input (TMP0)
P32/ASCKA0/SCKB4/TOP00
TIP01
External event/clock input (TMP0)
P33/TOP01
TIP10
External event/clock input (TMP1)
P34/TOP10
TIP11
External event/clock input (TMP1)
P35/TOP11
TIP20
External event/clock input (TMP2)
P97/A7/SIB1/TOP20
TIP21
Input
External event/clock input (TMP2)
P96/A6/TOP21
Notes 1. Flash memory version only
2. I
2C bus version (Y version) only