MDT2030AE Datasheet, PDF (4/14 Pages) Micon Design Technology Corporation – 8-bit micro-controller

(3) PC (Program Counter) : R2
A10
A9
MDT2030(AE)
Write PC, CALL --- always 0
JUMP --- from instruction word
RTWI, RET --- from STACK
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
0
1
2
3
4
65
7
Symbol
C
HC
Z
PF
TF
page
Function
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
This specification are subject to be changed without notice. Any latest information
please preview http;//www.mdtic.com.tw
P. 3
2005/6 Ver. 1.4