PIC16F18323-ESLASHRFQTP datasheet(60/442 Pages) MICROCHIP

60 / 442 page

PIC16(L)F18313/18323

DS40001799A-page 60

Preliminary

 2015 Microchip Technology Inc.

5.10

Start-up Sequence

Upon the release of a POR or BOR, the following must

occur before the device will begin executing:

Power-up Timer runs to completion (if enabled).

MCLR must be released (if enabled).

Oscillator start-up timer runs to completion (if

required for oscillator source).

The total time-out will vary based on oscillator

configuration and Power-up Timer Configuration. See

Section 6.0 “Oscillator Module (with Fail-Safe

Clock Monitor)”

for more information.

The Power-up Timer and oscillator start-up timer run

independently of MCLR Reset. If MCLR is kept low

long enough, the Power-up Timer will expire. Upon

bringing MCLR high, the device will begin execution

after 10 FOSC cycles (see Figure 5-3). This is useful for

testing purposes or to synchronize more than one

device operating in parallel.

FIGURE 5-3:

RESET START-UP SEQUENCE

TOST

TMCLR

TPWRT

VDD

Internal POR

Power-up Timer

MCLR

Internal RESET

Oscillator Modes

Oscillator Start-up Timer

Oscillator

FOSC

Internal Oscillator

Oscillator

FOSC

External Clock (EC)

CLKIN

FOSC

External Crystal

PIC16F18323-E/RFQTP Datasheet(PDF) 60 Page - Microchip Technology

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