
μ
PD703003
10
Data Sheet U12261EJ2V1DS00
(2/2)
Pin Name
I/O
Function
Alternate Function Pin
SCK0
I/O
Serial clock I/O (3-wire) for CSI0 to CSI3
P24
SCK1
P27
SCK2
P17/INTP123
SCK3
P37/INTP133
TXD0
Output
Serial transmit data output for UART0 and UART1
P22/SO0
TXD1
P25/SO1
RXD0
Input
Serial receive data input for UART0 and UART1
P23/SI0
RXD1
P26/SI1
PWM0
Output
PWM pulse signal output
P20
PWM1
P21
AD0 to AD7
I/O
16-bit multiplexed address/data bus for external memory expansion
P40 to P47
AD8 to AD15
P50 to P57
A16 to A19
Output
High-order address bus used for external memory expansion
P60 to P63
LBEN
Output
External data bus’s low-order byte enable signal output
P90
UBEN
External data bus’s high-order byte enable signal output
P91
R/W
Output
External read/write status output
P92
DSTB
External data strobe signal output
P93
ASTB
External address strobe signal output
P94
HLDAK
Output
Bus hold acknowledge output
P95
HLDRQ
Input
Bus hold request input
P96
ANI0 to ANI7
Input
Analog input to A/D converter
P70 to P77
ANO0, ANO1
Output
Analog output to D/A converter
—
NMI
Input
Nonmaskable interrupt request input
—
CLKOUT
Output
System clock output
—
CKSEL
Input
Input for specifying clock generator’s operation mode
CV
DD
WAIT
Input
Control signal input for inserting wait in bus cycle
—
MODE
Input
Operation mode select
—
RESET
Input
System reset input
—
X1
Input
Oscillator connection for system clock. Input is via X1 when using an
external clock.
—
X2
—
—
ADTRG
Input
A/D converter external trigger input
P07/INTP113
AV
REF1
Input
Reference voltage input for A/D converter
—
AV
REF2
Input
Reference voltage input for D/A converter
—
AV
REF3
—
AV
DD
—
Positive power supply for A/D converter
—
AV
SS
—
Ground potential for A/D converter
—
CV
DD
—
Positive power supply for on-chip clock generator
CKSEL
CV
SS
—
Ground potential for on-chip clock generator
—
V
DD
—
Positive power supply
—
V
SS
—
Ground potential
—
IC
—
Internally connected pin (connect directly to V
SS
)
—