MDT10P57 Datasheet, PDF (4/13 Pages) Micon Design Technology Corporation – 8-bit micro-controller

(4) STATUS (Status register): R03
Bit Symbol
Function
0
C Carry bit
1
HC Half Carry bit
2
Z Zero bit
3
PF Power loss Flag bit
4
TF WDT Timer overflow Flag bit
5 RBS0 Register Bank Select bit:
0: 00H~7FH (Bank0)
1: 80H~FFH (Bank1)
7~6 -- General purpose bit
(5) MSR (Memory Bank Select Register): R04
Memory Bank Select Register:
0: 00~7F (Bank0)
1: 80~FF (Bank1)
b7
b6
b5
b4
b3
b2
MDT10P57
b1
b0
Indirect Addressing Mode
(6) PORT A: R05 (PA5~PA0, I/O Register)
(7) PORT B: R06 (PB5~PB0, I/O Register)
(8) PCHLAT: R0A (High byte of PC)
Bit
Function
4~0 High byte of PC.
7~5 Unimplemented, reads as ’0’.
(9) INTS (Interrupt Status Register): R0B
Bit Symbol
Function
PORT A change interrupt flag. Set when PA0, PA1, PA3 inputs
0 RAIF
change.
1 INTF Set when INT interrupt occurs. INT interrupt flag.
2
TIF Set when TMR0 overflows.
0: disable PA change interrupt.
3 RAIE
1: enable PA change interrupt.
0: disable INT interrupt.
4 INTS
1: enable INT interrupt.
0: disable TMR0 interrupt.
5
TIS
1: enable TMR0 interrupt.
This specification are subject to be changed without notice. Any latest information please preview
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P.4
2007/4 Ver. 1.1