PIC16F639 Microchip Technology Inc., PIC16F639 Datasheet - Page 184

• Manufacturer Part Number: PIC16F639
• Description: 8/14-pin Flash-based, 8-bit Cmos Microcontrollers With Nanowatt Technology
• Manufacturer: Microchip Technology Inc.

PIC12F635/PIC16F636/639
FIGURE 15-7:
FIGURE 15-8:
DS41232D-page 182
Watchdog Timer
Internal Reset
Start-Up Time
(due to BOR)
Note 1:
Time-out
Reset
I/O pins
Internal
PWRT
MCLR
Reset
*
POR
OSC
V
V
DD
(1)
(1)
DD
64 ms delay only if PWRTE bit in the Configuration Word register is programmed to ‘0’.
Asserted low.
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND
POWER-UP TIMER TIMING
BROWN-OUT RESET TIMING AND CHARACTERISTICS
V
BOR
33
(Device in Brown-out Reset)
32
37
34
30
V
BOR
33*
+ V
HYST
31
(Device not in Brown-out Reset)
© 2007 Microchip Technology Inc.
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