MDT13P02_11 Datasheet, PDF (5/23 Pages) Micon Design Technology Corporation – 8-bit data bus

MDT13P02
(1) IAR (Indirect Address Register): R00
Addressing this location will use the content of MSR to address data memory (not a physical register)
(2) TMR0: R01
(3) PC (Program Counter): R02, R0A
(4) STATUS (Status register): R03
Bit Symbol
0
C
Carry bit
1
HC
Half Carry bit
2
Z
Zero bit
3
/PF
Power down bit
4
/TF
WDT timer overflow bit
5
RP0 Register Bank select bit
0: 00h~7Fh (Bank0)
1: 80h~FFh (Bank1)
7~6
--
General purpose bit
Function
(5) MSR (Memory Bank Select Register): R04
Memory Bank Select Register:
0: 00h~7Fh (Bank0)
1: 80h~FFh (Bank1)
b7
b6
b5
b4
b3
b2
b1
b0
(6) PORT A: R05
PA7~PA0, PORTA data register
(7) PORT B: R06
PB7~PB0, PORTB data register
Indirect Addressing Mode
(8) PCHLAT: R0A
Write buffer for the upper 4 bits of the Program counter
This specification are subject to be changed without notice. Any latest information
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P. 6
2011/9 Ver. 1.1