RFPIC12C509AG Datasheet, PDF (49/104 Pages) Microchip Technology – 18/20-Pin 8-Bit CMOS Microcontroller with UHF ASK/FSK Transmitter

rfPIC12C509AG/509AF
TABLE 8-3: RESET CONDITIONS FOR
REGISTERS
Register
Address
Power-on Reset
MCLR Reset
WDT time-out
Wake-up-on-Pin Change
W
—
qqqq qqxx ⁽¹⁾
qqqq qquu ⁽¹⁾
INDF
00h
xxxx xxxx
uuuu uuuu
TMR0
01h
xxxx xxxx
uuuu uuuu
PC
02h
1111 1111
1111 1111
STATUS
03h
0001 1xxx
q00q quuu ^(2,3)
FSR
04h
110x xxxx
11uu uuuu
OSCCAL
05h
1000 00--
uuuu uu--
GPIO
06h
--xx xxxx
--uu uuuu
OPTION
—
1111 1111
1111 1111
TRIS
—
--11 1111
--11 1111
Legend: u = unchanged, x = unknown, - = unimplemented bit, read as ‘0’, q = value depends on condition.
Note 1: Bits <7:2> of W register contain oscillator calibration values due to MOVLW XX instruction at top of memory.
Note 2: See Table 8-7 for RESET value for specific conditions
Note 3: If RESET was due to Wake-up-on-Pin Change, then bit 7 = 1. All other RESETS will cause bit 7 = 0.
TABLE 8-4: RESET CONDITION FOR
SPECIAL REGISTERS
STATUS Addr: 03h
Power-on Reset
0001 1xxx
MCLR Reset during normal operation
000u uuuu
MCLR Reset during SLEEP
0001 0uuu
WDT Reset during SLEEP
0000 0uuu
WDT Reset normal operation
0000 uuuu
Wake-up from SLEEP on pin change
1001 0uuu
Legend: u = unchanged, x = unknown, - = unimplemented bit, read as ‘0’.
PCL Addr: 02h
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
© 2001 Microchip Technology Inc.
Preliminary
DS70031A-page 47