PIC16F627A_05 Datasheet, PDF (102/180 Pages) Microchip Technology – Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F627A/628A/648A
FIGURE 14-6:
SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT
External
Reset
MCLR/
VPP Pin
VDD
Schmitt Trigger Input
Sleep
WDT
Module
WDT
Time-out
Reset
VDD Rise
Detect _{Power-on Reset}
Brown-out
Reset
S
BOREN
OST/PWRT
OST
10-bit Ripple-counter
OSC1/
R
CLKIN
Pin
PWRT
On-chip⁽¹⁾
OSC
10-bit Ripple-counter
Q
Chip_Reset
Q
Enable PWRT
Enable OST
Note 1: This is a separate oscillator from the INTOSC/RC oscillator.
See Table 14-3 for time out situations.
DS40044D-page 100
© 2005 Microchip Technology Inc.