9.7.4 STATUS
Note:
- For
Borrow, the polarity is reversed. A subtraction is
executed by adding the two’s complement of the second operand. For Rotate
(
RRCF
,RLCF
) instructions, this bit is loaded with either the high or low-order bit of the Source register.
Name: | STATUS |
Offset: | 0x0003 |
Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
TO | PD | Z | DC | C | |||||
Access | R | R | R/W | R/W | R/W | ||||
Reset | 1 | 1 | 0 | 0 | 0 |
Bit 4 – TO Time-Out
Reset States: |
|
Value | Description |
---|---|
1 | Set at
power-up or by execution of CLRWDT or SLEEP
instruction |
0 | A WDT time-out occurred |
Bit 3 – PD Power-Down
Reset States: |
|
Value | Description |
---|---|
1 | Set at
power-up or by execution of CLRWDT
instruction |
0 | Cleared by
execution of the SLEEP instruction |
Bit 2 – Z Zero
Reset States: |
|
Value | Description |
---|---|
1 | The result of an arithmetic or logic operation is zero |
0 | The result of an arithmetic or logic operation is not zero |
Bit 1 – DC Digit Carry/Borrow(1)
ADDWF
, ADDLW
, SUBLW
,
SUBWF
instructionsReset States: |
|
Value | Description |
---|---|
1 | A carry-out from the 4th low-order bit of the result occurred |
0 | No carry-out from the 4th low-order bit of the result |
Bit 0 – C Carry/Borrow(1)
ADDWF
,
ADDLW
, SUBLW
, SUBWF
instructionsReset States: |
|
Value | Description |
---|---|
1 | A carry-out from the Most Significant bit of the result occurred |
0 | No carry-out from the Most Significant bit of the result occurred |