10F222 datasheet(18/86 Pages) MICROCHIP

18 / 86 page

PIC10F220/222

DS41270E-page 16

STATUS REGISTER (ADDRESS: 03h)

R/W-0

R-1

R/W-x

GPWUF

—

—TO

ZDC

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7

GPWUF: GPIO Reset bit

= Reset due to wake-up from Sleep on pin change

= After power-up or other Reset

bit 6

Reserved: Do not use. Use of this bit may affect upward compatibility with future products.

bit 5

Reserved: Do not use. Use of this bit may affect upward compatibility with future products.

bit 4

TO: Time-out bit

= After power-up, CLRWDT instruction or SLEEP instruction

= A WDT time-out occurred

bit 3

PD: Power-down bit

= After power-up or by the CLRWDT instruction

= By execution of the SLEEP instruction

bit 2

Z: Zero bit

= The result of an arithmetic or logic operation is zero

= The result of an arithmetic or logic operation is not zero

bit 1

DC: Digit carry/borrow bit (for ADDWF and SUBWF instructions)

ADDWF:

= A carry to the 4th low-order bit of the result occurred

= A carry to the 4th low-order bit of the result did not occur

SUBWF:

= A borrow from the 4th low-order bit of the result did not occur

= A borrow from the 4th low-order bit of the result occurred

bit 0

C: Carry/borrow bit (for ADDWF, SUBWF and RRF, RLF instructions)

ADDWF:

SUBWF:

RRF

or RLF:

= A carry occurred

= A borrow did not occur Load bit with LSb or MSb, respectively

= A carry did not occur

= A borrow occurred

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