UPD70741GC-25-8EU datasheet(3/112 Pages) NEC

Part #	UPD70741GC-25-8EU

Description	V821TM 32-/16-BIT MICROPROCESSOR

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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µPD70741

3

PIN NAMES

A0-A23

: Address Bus

BLOCK

: Bus Lock

CLKOUT

: System Clock Out

CS0-CS3

: Chip Select

D0-D15

: Data Bus

DACK0, DACK1

: DMA Acknowledge

DREQ0, DREQ1

: DMA Request

HLDAK

: Hold Acknowledge

HLDRQ

: Hold Request

INTP00-INTP03, INTP10-INTP13

: Interrupt Request

IORD

: I/O Read

IOWR

: I/O Write

LCAS

: Lower Column Address Strobe

LMWR

: Lower Memory Write

MRD

: Memory Read

NMI

: Non-maskable Interrupt Request

P00-P09

: Port

RAS

: Row Address Strobe

READY

: Ready

REFRQ

: Refresh Request

RESET

: Reset

RXD

: Receive Data

SCLK

: Serial Clock

SI

: Serial Input

SO

: Serial Output

TC

: Terminal Count

TCLR

: Timer Clear

TI

: Timer Input

TO00, TO01

: Timer Output

TXD

: Transmit Data

UBE

: Upper Byte Enable

UCAS

: Upper Column Address Strobe

UMWR

: Upper Memory Write

WDTOUT

: Watchdog Timer Output

WE

: Write Enable

X1, X2

: Crystal Oscillator

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