MDT10P05BE Datasheet, PDF (3/16 Pages) Micon Design Technology Corporation – 8-bit micro-controller

Address
04
05
06
07~1F
MDT10P05(BE)
Description
MSR
Port A
Port B
Internal RAM, General Purpose Register
(1) IAR ( Indirect Address Register) : R0
(2) RTCC (Real Time Counter/Counter Register) : R1
(3) PC (Program Counter) : R2
Write PC, CALL --- always 0
LJUMP, JUMP, LCALL --- from instruction word
RTWI, RET --- from STACK
A9
A8
A7~A0
Write PC, JUMP, CALL --- always 0 (ROM 0.5K)
LJUMP, LCALL --- from instruction word
RTWI, RET --- from STACK
Write PC --- from ALU
LJUMP, JUMP, LCALL, CALL --- from instruction word
RTWI, RET --- from STACK
(4) STATUS (Status register) : R3
Bit
Symbol
Function
0
C
Carry bit
1
HC
Half Carry bit
2
Z
Zero bit
3
PF
Power loss Flag bit
4
TF
Time overflow Flag bit
5-7
General purpose bit
(5) MSR (Memory Select Register) : R4
This specification are subject to be changed without notice. Any latest information
please preview ttp;//www.mdtic.com.tw
P. 3
2005/6
VER1.3