
CHAPTER  2   PIN  FUNCTIONS
User’s Manual  U15862EJ3V0UD
61
(3/5)
Pin Name
I/O
Pull-up Resistor
Function
Alternate Function
Products
KR0
P50/TI011/RTP00
KR1
P51/TI50/RTP01
KR2
P52/TO50/RTP02
KR3
P53/SIA0/RTP03
KR4
P54/SOA0/RTP04
KR5
P55/SCKA0/RTP05
KR6
P90/A0/TXD1
KR7
Input
Yes
Key return input
P91/A1/RXD1
All products
NMI
Input
Yes
External interrupt input
(non-maskable, analog noise elimination)
P02
All products
RD
Output
No
Read strobe signal output for external memory
PCT4
All products
REGC
–
–
Connecting capacitor for regulator output stabilization
–
All products
RESET
Input
–
System reset input
–
All products
RTP00
P50/TI011/KR0
RTP01
P51/TI50/KR1
RTP02
P52/TO50/KR2
RTP03
P53/SIA0/KR3
RTP04
P54/SOA0/KR4
RTP05
P55/SCKA0/KR5
All products
RTP10
P60
RTP11
P61
RTP12
P62
RTP13
P63
RTP14
P64
RTP15
Output
Yes
Real-time output port
P65
KJ1
RXD0
Serial receive data input for UART0
P31
RXD1
Serial receive data input for UART1
P91/A1/KR7
All products
RXD2
Input
Yes
Serial receive data input for UART2
P80/SDA1
Note 1
KJ1
SCK00
Serial clock I/O for CSI00
P42
SCK01
Serial clock I/O for CSI01
P99/A9
All products
SCK02
Serial clock I/O for CSI02
P68
KJ1
SCKA0
Serial clock I/O for CSIA0
P55/RTP05/KR5
All products
SCKA1
I/O
Yes
Serial clock I/O for CSIA1
P912/A12
KG1, KJ1
SCL0
Note 1
No
Note 2
P39
All products
SCL1
Note 3
I/O
Yes
Serial clock I/O for I
2
C0, I
2
C1
P81/TXD2
KJ1
SDA0
Note 1
No
Note 2
P38
All products
SDA1
Note 3
I/O
Yes
Serial transmit/receive data I/O for I
2
C0, I
2
C1
P80/RXD2
KJ1
Notes 1.
 Only for products with an I
2.
 An on-chip pull-up resistor can be provided by a mask option (only for the mask ROM and I
versions).
3.
 Only for the 
μ
PD703216Y, 703217Y, and 70F3217Y
Remark
KG1: V850ES/KG1, KJ1: V850ES/KJ1
2
C bus
2
C bus