Datasheet
PIC16C62X
DS30235J-page 52 2003 Microchip Technology Inc.
TABLE 9-4: INITIALIZATION CONDITION FOR SPECIAL REGISTERS
TABLE 9-5: INITIALIZATION CONDITION FOR REGISTERS
Condition
Program
Counter
STATUS
Register
PCON
Register
Power-on Reset 000h 0001 1xxx ---- --0x
MCLR
Reset during normal operation 000h 000u uuuu ---- --uu
MCLR
Reset during SLEEP 000h 0001 0uuu ---- --uu
WDT Reset 000h 0000 uuuu ---- --uu
WDT Wake-up PC + 1 uuu0 0uuu ---- --uu
Brown-out Reset 000h 000x xuuu ---- --u0
Interrupt Wake-up from SLEEP PC + 1
(1)
uuu1 0uuu ---- --uu
Legend:
u = unchanged, x = unknown, - = unimplemented bit, reads as ‘0’.
Note 1: When the wake-up is due to an interrupt and global enable bit, GIE is set, the PC is loaded with the
interrupt vector (0004h) after execution of PC+1.
Register Address Power-on Reset
• MCLR
Reset during
normal operation
• MCLR
Reset during
SLEEP
• WDT Reset
• Brown-out Reset
(1)
• Wake-up from SLEEP
through interrupt
• Wake-up from SLEEP
through WDT time-out
W
— xxxx xxxx uuuu uuuu uuuu uuuu
INDF
00h — — —
TMR0
01h xxxx xxxx uuuu uuuu uuuu uuuu
PCL
02h 0000 0000 0000 0000
PC + 1
(3)
STATUS
03h 0001 1xxx
000q quuu
(4)
uuuq quuu
(4)
FSR
04h xxxx xxxx uuuu uuuu uuuu uuuu
PORTA
05h ---x xxxx ---u uuuu ---u uuuu
PORTB
06h xxxx xxxx uuuu uuuu uuuu uuuu
CMCON
1Fh 00-- 0000 00-- 0000 uu-- uuuu
PCLATH
0Ah ---0 0000 ---0 0000 ---u uuuu
INTCON
0Bh 0000 000x 0000 000u
uuuu uqqq
(2)
PIR1
0Ch -0-- ---- -0-- ----
-q-- ----
(2,5)
OPTION
81h 1111 1111 1111 1111 uuuu uuuu
TRISA
85h ---1 1111 ---1 1111 ---u uuuu
TRISB
86h 1111 1111 1111 1111 uuuu uuuu
PIE1
8Ch -0-- ---- -0-- ---- -u-- ----
PCON
8Eh ---- --0x
---- --uq
(1,6)
---- --uu
VRCON
9Fh 000- 0000 000- 0000 uuu- uuuu
Legend: u = unchanged, x = unknown, - = unimplemented bit, reads as ‘0’,q = value depends on condition.
Note 1: If V
DD goes too low, Power-on Reset will be activated and registers will be affected differently.
2: One or more bits in INTCON, PIR1 and/or PIR2 will be affected (to cause wake-up).
3: When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector (0004h).
4: See Table 9-4 for RESET value for specific condition.
5: If wake-up was due to comparator input changing, then bit 6 = 1. All other interrupts generating a wake-up will cause
bit 6 = u.
6: If RESET was due to brown-out, then bit 0 = 0. All other RESETS will cause bit 0 = u.