PIC16F8X_13 Datasheet, PDF (46/128 Pages) Microchip Technology – 18-pin Flash/EEPROM 8-Bit Microcontrollers

PIC16F8X
FIGURE 8-12: TIME-OUT SEQUENCE ON POWER-UP (MCLR TIED TO VDD): FAST VDD RISE TIME
VDD
MCLR
INTERNAL POR
PWRT TIME-OUT
OST TIME-OUT
INTERNAL RESET
TPWRT
TOST
FIGURE 8-13: TIME-OUT SEQUENCE ON POWER-UP (MCLR TIED TO VDD): SLOW VDD RISE TIME
V1
VDD
MCLR
INTERNAL POR
PWRT TIME-OUT
OST TIME-OUT
TPWRT
TOST
INTERNAL RESET
When VDD rises very slowly, it is possible that the TPWRT time-out and TOST time-out will expire before VDD
has reached its final value. In this example, the chip will reset properly if, and only if, V1  VDD min.
DS30430D-page 46
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