MDT2030(CF)

This specification are subject to be changed without notice. Any latest information

(3) PC (Program Counter) : R2

Write PC, CALL --- always 0

JUMP --- from instruction word

RTWI, RET --- from STACK

A10

A9

A8

A7~A0

Write PC, JUMP, CALL --- from STATUS b6 b5

RTWI, RET --- from STACK

Write PC --- from ALU

JUMP, CALL --- from instruction word

RTWI, RET --- from STACK

(4) STATUS (Status register) : R3

Bit

Symbol

Function

0

1

2

3

4

6—5

7

C

HC

Z

PF

TF

page

——

Carry bit

Half Carry bit

Zero bit

Power loss Flag bit

WDT Timer overflow Flag bit

ROM page select bit :

00 : Page 0,

000H --- 1FFH

01 : Page 1,

200H --- 3FFH

10 : Page 2,

400H --- 5FFH

11 : Page 3,

600H --- 7FFH

General purpose bit

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2007/8

Ver. 1.6