UPD703003 datasheet(10/82 Pages) NEC

10 / 82 page

µPD703003

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

CVDD

WAIT

Input

Control signal input for inserting wait in bus cycle

—

MODE

Input

Operation mode select

—

RESET

Input

System reset input

—

Input

Oscillator connection for system clock. Input is via X1 when using an

—

external clock.

—

ADTRG

Input

A/D converter external trigger input

P07/INTP113

AVREF1

Input

Reference voltage input for A/D converter

—

AVREF2

Input

Reference voltage input for D/A converter

—

AVREF3

—

AVDD

—

Positive power supply for A/D converter

—

AVSS

—

Ground potential for A/D converter

—

CVDD

—

Positive power supply for on-chip clock generator

CKSEL

CVSS

—

Ground potential for on-chip clock generator

—

VDD

—

Positive power supply

—

VSS

—

Ground potential

—

Internally connected pin (connect directly to VSS)—

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