4502 datasheet(56/116 Pages) RENESAS

56 / 116 page

Rev.3.01

2005.02.02

page 56 of 112

REJ03B0105-0301

4502 Group

Symbol

PU0

PU1

PU2

PCH

PCL

T1F

T2F

Contents

A/D control register Q1 (4 bits)

Interrupt control register V1 (4 bits)

Interrupt control register V2 (4 bits)

Interrupt control register I1 (4 bits)

Timer control register W1 (4 bits)

Timer control register W2 (4 bits)

Timer control register W6 (4 bits)

Clock control register MR (4 bits)

Key-on wakeup control register K0 (4 bits)

Key-on wakeup control register K1 (4 bits)

Key-on wakeup control register K2 (4 bits)

Pull-up control register PU0 (4 bits)

Pull-up control register PU1 (4 bits)

Pull-up control register PU2 (4 bits)

Data pointer (10 bits)

(It consists of registers X, Y, and Z)

Program counter (14 bits)

High-order 7 bits of program counter

Low-order 7 bits of program counter

Stack register (14 bits ✕ 8)

Stack pointer (3 bits)

Carry flag

Timer 1 reload register

Timer 2 reload register

Timer 1

Timer 2

Timer 1 interrupt request flag

Timer 2 interrupt request flag

Contents

Watchdog timer flag

Watchdog timer enable flag

Interrupt enable flag

External 0 interrupt request flag

Power down flag

A/D conversion completion flag

Port D (6 bits)

Port P0 (4 bits)

Port P1 (4 bits)

Port P2 (2 bits)

Port P3 (2 bits)

Port C (1 bit)

Port K (1 bit)

Hexadecimal variable

Hexadecimal constant

Binary notation of hexadecimal variable A

(same for others)

Direction of data movement

Data exchange between a register and memory

Decision of state shown before “?”

Contents of registers and memories

Negate, Flag unchanged after executing instruction

RAM address pointed by the data pointer

Label indicating address a6 a5 a4 a3 a2 a1 a0

in page p5 p4 p3 p2 p1 p0

Hex. C + Hex. number x (also same for others)

Symbol

WDF1

WEF

INTE

EXF0

ADF

A3A2A1A0

←

↔

( )

—

M(DP)

p, a

Note : Some instructions of the 4502 Group has the skip function to unexecute the next described instruction. The 4502 Group just invalidates the next instruc-

tion when a skip is performed. The contents of program counter is not increased by 2. Accordingly, the number of cycles does not change even if skip

is not performed. However, the cycle count becomes “1” if the TABP p, RT, or RTS instruction is skipped.

INSTRUCTIONS

The 4502 Group has the 113 instructions. Each instruction is de-

scribed as follows;

(1) Index list of instruction function

(2) Machine instructions (index by alphabet)

(3) Machine instructions (index by function)

(4) Instruction code table

SYMBOL

The symbols shown below are used in the following list of instruc-

tion function and the machine instructions.

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