MDT10P157
7. Memory Map
(A) Register Map
Address
00
Description
Indirect Addressing Register
01
RTCC
02
PC
03
STATUS
04
MSR
05
Port A
06
Port B
07
Port C
08~0F
10~1F
30~3F
50~5F
70~7F
Internal RAM, General Purpose Register
Internal Memory Select Register
Internal Memory Select Register
Internal Memory Select Register
Internal Memory Select Register
Note : 00~0F, 20~2F, 40~4F, 60~6F are accessed to the same memory location.
(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
A10
A9
A8
A7~A0
Write PC, JUMP, CALL --- from b6-5 of STATUS
LJUMP, LCALL --- from instruction word
RTWI, RET --- from STACK
Write PC --- from ALU
LJUMP, JUMP, LCALL, CALL --- from instruction word
RTWI, RET --- from STACK
This specification are subject to be changed without notice. Any latest information please visit
hpttlpe;a//swewpwre.mvidetwic.chottmp;.t/w/www.mxmcu.com.cn P.3
2010/06 VER 1.0
MDTIC [ Micon Design Technology Corporation ]
