EM73880 datasheet(40/40 Pages) EMC

40 / 40 page

* This specification are subject to be changed without notice.

EM73880

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

11.30.2001

Preliminary

**** SYMBOL DESCRIPTION

Symbol

Description

Symbol

Description

H register

L register

Program counter

Data pointer

Stack pointer

STACK[SP]

Stack specified by SP

Accumulator

FLAG

All flags

Carry flag

Zero flag

Status flag

Enable interrupt register

Interrupt latch

MASK

Interrupt mask

PORT[p]

Port ( address : p )

ΤΑ

Timer/counter A

ΤΒ

Timer/counter B

RAM[HL]

Data memory (address : HL )

RAM[x]

Data memory (address : x )

ROM[DP]

Low 4-bit of program memory

ROM[DP]

High 4-bit of program memory

[DP]

Low 4-bit of data pointer register

[DP]

Middle 4-bit of data pointer register

[DP]

High 4-bit of data pointer register

[TA]

L([TB]L)

Low 4-bit of timer/counter A

(timer/counter B) register

[TA]

M([TB]M)

Middle 4-bit of timer/counter A

[TA]

H([TB]H)

High 4-bit of timer/counter A

(timer/counter B) register

←

Transfer

↔

Exchange

Addition

Substraction

Logic AND

Logic OR

Logic XOR

Inverse operation

Concatenation

4-bit immediate data

8-bit RAM address

4-bit zero-page address

4-bit or 5-bit port address

Bit address

6-bit interrupt latch

11-6

Bit 11 to 6 of program counter

LR 1-0

Contents of bit assigned by bit

5-0

Bit 5 to 0 of destination address for

1 to 0 of LR

branch instruction

3-2

Bit 3 to 2 of LR

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