MDT2005IB Datasheet, PDF (6/15 Pages) Micon Design Technology Corporation – 8-bit micro-controller

MDT2005(IB)
7. Reset Condition for all Registers
Register Address Power-On Reset /MCLR or WDT Reset
CPIO A
1111 1111
1111 1111
CPIO B
1111 1111
1111 1111
TMR
--11 1111
--11 1111
IAR
00h
RTCC
01h
xxxx xxxx
uuuu uuuu
PC
02h
1111 1111
1111 1111
STATUS
03h
0001 1xxx
000# #uuu
MSR
04h
111x xxxx
111u uuuu
PORT A
05h
- - - - xxxx
- - - - uuuu
PORT B
06h
xxxx xxxx
uuuu uuuu
Note : u unchanged, x unknown, - unimplemented, read as “0”
# value depends on the condition of the following table
Condition
/MCLR reset (not during SLEEP)
/MCLR reset during SLEEP
WDT reset (not during SLEEP)
WDT reset during SLEEP
Status: bit 4
u
1
0
0
Status: bit 3
u
0
1
0
8. Instruction Set
Instruction Code
010000 00000000
010000 00000001
010000 00000010
010000 00000011
010000 00000100
010000 00000rrr
010001 1rrrrrrr
011000 trrrrrrr
111010 iiiiiiii
Mnemonic
Operands
NOP
CLRWT
SLEEP
TMODE
RET
CPIO R
STWR R
LDR R, t
LDWI I
Function
No operation
Clear Watchdog timer
Sleep mode
Load W to TMODE register
Return
Control I/O port register
Store W to register
Load register
Load immediate to W
Operating
Status
None
0 WT
TF, PF
0 WT, stop OSC TF, PF
W TMODE
None
Stack PC
None
W CPIO r
None
WR
None
Rt
Z
IW
None
This specification are subject to be changed without notice. Any latest information please preview
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P. 5
2005/6 VER1.3