PIC16F716
FIGURE 9-5:
SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT
External
Reset
MCLR
Sleep
WDT
WDT
Module
Time-out
Reset
VDD rise
detect
Power-on Reset
VDD
Brown-out
Reset
S
R
BOREN
OST/PWRT
OST
10-bit Ripple counter
Chip_Reset
Q
OSC1
(1)
On-chip
RC OSC
PWRT
10-bit Ripple counter
PWRTE
See Table 9-3 for time-out
situations.
Enable OST
Note 1: This is a separate oscillator from the RC oscillator of the CLKIN pin.
FIGURE 9-6:
BROWN-OUT SITUATIONS (PWRTE = 0)
VDD
VBOR
Internal
Reset
72 ms
VDD
VBOR
Internal
Reset
<72 ms
72 ms
VDD
VBOR
Internal
Reset
72 ms
DS41206B-page 66
© 2007 Microchip Technology Inc.