Datasheet

Table Of Contents
2011-2013 Microchip Technology Inc. DS40001609C-page 67
PIC16(L)F1508/9
FIGURE 6-3: RESET START-UP SEQUENCE
Note 1: Code execution begins 10 FOSC cycles after the FOSC clock is released.
External Oscillators , PWRTEN = 1, IESO = 1
code execution
(1)
External Oscillators , PWRTEN = 0, IESO = 1
Ext. Oscillator
Osc Start-Up Timer
TOST
TPWRT
TOST
VDD
Internal POR
Internal RESET
MCLR
FOSC
Begin Execution
Power-up Timer
Int. Oscillator
code execution
(1)
External Oscillators , PWRTEN = 1, IESO = 0
code
execution
(1)
External Oscillators , PWRTEN = 0, IESO = 0
Ext. Oscillator
Osc Start-Up Timer
code
execution
(1)
TOST
TPWRT
TOST
VDD
Internal POR
Internal RESET
MCLR
FOSC
Begin Execution
Power-up Timer
V
DD
Internal POR
External Clock (EC modes), PWRTEN = 0
Internal RESET
MCLR
FOSC
Begin Execution
Ext. Clock (EC)
Power-up Timer
External Clock (EC modes), PWRTEN = 1
code execution
(1)
code execution
(1)
TPWRT
Int. Oscillator
code execution
(1)
Internal Oscillator, PWRTEN = 0
Internal Oscillator, PWRTEN = 1
code execution
(1)
TPWRT
VDD
Internal POR
Internal RESET
MCLR
FOSC
Begin Execution
Power-up Timer
Rev. 10-000032A
7/30/2013