p16f877 Microchip Technology Inc., p16f877 Datasheet - Page 129

• Manufacturer Part Number: p16f877
• Description: 28/40-pin 8-bit Cmos Flash Microcontrollers
• Manufacturer: Microchip Technology Inc.

TABLE 12-6:
FIGURE 12-5:
PIE2
PCON
PR2
SSPADD
SSPSTAT
TXSTA
SPBRG
ADRESL
ADCON1
EEDATA
EEADR
EEDATH
EEADRH
EECON1
EECON2
Legend: u = unchanged, x = unknown, - = unimplemented bit, read as ’0’, q = value depends on condition,
Note 1: One or more bits in INTCON, PIR1 and/or PIR2 will be affected (to cause wake-up).
2001 Microchip Technology Inc.
Register
INTERNAL RESET
PWRT TIME-OUT
2: When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector
3: See Table 12-5 for RESET value for specific condition.
INTERNAL POR
OST TIME-OUT
r = reserved, maintain clear
(0004h).
MCLR
V
INITIALIZATION CONDITIONS FOR ALL REGISTERS (CONTINUED)
DD
873
873
873
873
873
873
873
873
873
873
873
873
873
873
873
TIME-OUT SEQUENCE ON POWER-UP (MCLR TIED TO V
874
874
874
874
874
874
874
874
874
874
874
874
874
874
874
Devices
876
876
876
876
876
876
876
876
876
876
876
876
876
876
876
877
877
877
877
877
877
877
877
877
877
877
877
877
877
877
Brown-out Reset
Power-on Reset,
-r-0 0--0
---- --qq
1111 1111
0000 0000
--00 0000
0000 -010
0000 0000
xxxx xxxx
0--- 0000
0--- 0000
xxxx xxxx
xxxx xxxx
xxxx xxxx
x--- x000
---- ----
T
PWRT
T
OST
MCLR Resets,
-r-0 0--0
---- --uu
1111 1111
0000 0000
--00 0000
0000 -010
0000 0000
uuuu uuuu
0--- 0000
0--- 0000
uuuu uuuu
uuuu uuuu
uuuu uuuu
u--- u000
---- ----
WDT Reset
PIC16F87X
DD
)
Wake-up via WDT or
DS30292C-page 127
-r-u u--u
---- --uu
1111 1111
uuuu uuuu
--uu uuuu
uuuu -uuu
uuuu uuuu
uuuu uuuu
u--- uuuu
u--- uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
u--- uuuu
---- ----
Interrupt