UPD750004A datasheet(41/84 Pages) NEC

41 / 84 page

µPD750004, 750006, 750008, 750004(A), 750006(A), 750008(A)

(2) Symbol definitions in operation description

A register; 4-bit accumulator

B register

C register

D register

E register

H register

L register

X register

XA'

Extended register pair (XA')

BC'

Extended register pair (BC')

DE'

Extended register pair (DE')

HL'

Extended register pair (HL')

Program counter

Stack pointer

Carry flag; Bit accumulator

PSW

Program status word

MBE

Memory bank enable flag

RBE

PORTn :

Port n (n = 0 to 8)

IME

Interrupt master enable flag

IPS

Interrupt priority specification register

×××

Interrupt enable flag

RBS

MBS

Memory bank selection register

PCC

Processor clock control register

Address bit delimiter

(

××)

Contents addressed by

××

××H

Hexadecimal data

UPD750004A Datasheet(PDF) 41 Page - NEC

UPD750004A Datasheet(HTML) 41 Page - NEC

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