CHAPTER 2 PIN FUNCTIONS
User’s Manual U13850EJ4V0UM
56
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Pin Name
I/O
PULL
Function
Alternate Function
INTP6
External interrupt request input (digital noise elimination for
remote control)
P07
KR0 to KR3
P100/A5/RTP0 to
P103/A8/RTP3
KR4
P104/A9/RTP4/IERX
KR5
P105/A10/RTP5/IETX
KR6, KR7
Input
Yes
Key return input
P106/A11/RTP6 to
P107/A12/RTP7
LBEN
Output
No
External data bus’s lower byte enable signal output
P90/WRL
IC
−
−
Internally connected (
µ
PD70303xA and 70303xAY only)
−
NMI
Input
Yes
Non-maskable interrupt request input
P00
RD
Output
No
Read strobe signal output
P93/DSTB
REGC
−
−
Capacitor connection for regulator output stabilization
−
RESET
Input
−
System reset input
−
RTP0 to RTP3
P100/A5/KR0 to
P103/A8/KR3
RTP4
P104/A9/KR4/IERX
RTP5
P105/A10/KR5/IETX
RTP6, RTP7
Output
Yes
Real-time output port
P106/A11/KR6,
P107/A12/KR7
RTPTRG
Input
Yes
RTP external trigger input
P06/INTP5
R/W
Output
No
External read/write status output
P92/WRH
RXD0
P13/SI1
RXD1
Input
Yes
Serial receive data input for UART0 and UART1
P23/SI3
SCK0
P12/SCL0
SCK1
P15/ASCK0
SCK2
P22/SCL1
SCK3
Serial clock I/O (3-wire type) for CSI0 to CSI3
P25/ASCK1
SCK4
I/O
Yes
Serial clock I/O for variable-length CSI4 (3-wire type)
P34/TO0/A13
SCL0
P12/SCK0
SCL1
I/O
Yes
Serial clock I/O for I
2
C0 and I
2
C1 (
µ
PD70303xAY and
70F303wAY only)
P22/SCK2
SDA0
P10/SI0
SDA1
I/O
Yes
Serial transmit/receive data I/O for I
2
C0 and I
2
C1
(
µ
PD70303xAY and 70F303wAY only)
P20/SI2
SI0
P10/SDA0
SI1
P13/RXD0
SI2
P20/SDA1
SI3
Serial receive data input (3-wire type) for CSI0 to CSI3
P23/RXD1
SI4
Input
Yes
Serial receive data input (3-wire type) for variable-length CSI4
P32/TI10
SO0
Output
Yes
Serial transmit data output (3-wire type) for CSI0 to CSI3
P11
Remark
PULL: on-chip pull-up resistor