
PIC16C745/765
DS41124C-page 104
Preliminary
2000 Microchip Technology Inc.
13.5
Time-out in Various Situations
TABLE 13-3:
RESET TIME-OUTS
TABLE 13-4:
STATUS BITS AND THEIR SIGNIFICANCE
TABLE 13-5:
RESET CONDITION FOR SPECIAL REGISTERS
Oscillator
Configuration
POR
BOR
Wake-up
from SLEEP
PWRTE = 0
PWRTE = 1
PWRTE = 0
PWRTE = 1
HS
TPWRT + 1024
TOSC
1024
TOSC
TPWRT + 1024
TOSC
1024
TOSC
1024
TOSC
H4
TPWRT + TPLLRT +
1024
TOSC
TPLLRT +
1024
TOSC
TPWRT + TPLLRT +
1024
TOSC
TPLLRT +
1024
TOSC
TPLLRT +
1024
TOSC
EC
TPWRT
0TPWRT
00
E4
TPWRT + TPLLRT
TPLLRT
TPWRT + TPLLRT
TPLLRT
POR
BOR
TO
PD
0x
1
Power-on Reset
0x
0
x
Illegal, TO is set on POR
0x
x
0
Illegal, PD is set on POR
10
1
Brown-out Reset
11
0
1
WDT Reset
11
0
WDT Wake-up
11
u
MCLR Reset during normal operation
11
1
0
MCLR Reset during SLEEP or Interrupt Wake-up from SLEEP
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 1uuu
---- --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 read as ’0’.
Note 1: When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector
(0004h).
TABLE 13-6:
REGISTERS ASSOCIATED WITH RESETS
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on:
POR, BOR
Value on all
other Resets
03h, 83h,
103h, 183h
Status
IRP
RP1
RP0
TO
PD
ZDC
C
0001 1xxx
000q quuu
8Eh
PCON
—
POR
BOR
---- --qq
---- --uu
Legend: x = unknown, u = unchanged, - = unimplemented locations read as '0'.
745cov.book Page 104 Wednesday, August 2, 2000 8:24 AM