PIC16F870-I/SO View Datasheet(PDF) - Microchip Technology
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PIC16F870-I/SO Datasheet PDF : 156 Pages
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PIC16F870/871
TABLE 11-6: INITIALIZATION CONDITIONS FOR ALL REGISTERS (CONTINUED)
Register
Devices
Power-on Reset,
Brown-out Reset
MCLR Resets
WDT Reset
Wake-up via WDT or
Interrupt
ADCON1
870 871
0--- 0000
0--- 0000
u--- uuuu
EEDATA
870 871
0--- 0000
0--- 0000
u--- uuuu
EEADR
870 871
xxxx xxxx
uuuu uuuu
uuuu uuuu
EEDATH
870 871
xxxx xxxx
uuuu uuuu
uuuu uuuu
EEADRH
870 871
xxxx xxxx
uuuu uuuu
uuuu uuuu
EECON1
870 871
x--- x000
u--- u000
u--- uuuu
EECON2
870 871
---- ----
---- ----
---- ----
Legend: u = unchanged, x = unknown, - = unimplemented bit, read as ’0’, q = value depends
on condition, r = reserved maintain clear.
Note 1: One or more bits in INTCON, PIR1 and/or PIR2 will be affected (to cause wake-up).
2: When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the inter-
rupt vector (0004h).
3: See Table 11-5 for reset value for specific condition.
FIGURE 11-5: TIME-OUT SEQUENCE ON POWER-UP (MCLR TIED TO VDD)
VDD
MCLR
INTERNAL POR
PWRT TIME-OUT
OST TIME-OUT
TPWRT
TOST
INTERNAL RESET
FIGURE 11-6: TIME-OUT SEQUENCE ON POWER-UP (MCLR NOT TIED TO VDD): CASE 1
VDD
MCLR
INTERNAL POR
PWRT TIME-OUT
OST TIME-OUT
INTERNAL RESET
TPWRT
TOST
© 1999 Microchip Technology Inc.
Preliminary
DS30569A-page 97
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