PIC16F54-ESLASHSSG datasheet(66/88 Pages) MICROCHIP

66 / 88 page

PIC16F5X

DS41213D-page 64

TABLE 11-1:

EXTERNAL CLOCK TIMING REQUIREMENTS

AC CHARACTERISTICS

Standard Operating Conditions (unless otherwise specified)

Operating Temperature

-40

°C ≤ TA ≤ +85°C for industrial

-40

°C ≤ TA ≤ +125°C for extended

Parameter

No.

Sym.

Characteristic

Min.

Typ†

Max.

Units

Conditions

FOSC

External CLKIN Frequency(1)

—

4.0

MHz XT Osc mode

—

MHz HS Osc mode

—

200

kHz

LP Osc mode

Oscillator Frequency(1)

—

4.0

MHz RC Osc mode

0.1

—

4.0

MHz XT Osc mode

4.0

—

MHz HS Osc mode

5.0

—

200

kHz

LP Osc mode

1TOSC

External CLKIN Period(1)

250

—

XT Osc mode

—

HS Osc mode

5.0

—

μsLP Osc mode

Oscillator Period(1)

250

—

RC Osc mode

250

—

10,000

XT Osc mode

—

250

HS Osc mode

5.0

—

μsLP Osc mode

2TCY

Instruction Cycle Time(2)

—4/FOSC

——

TosL, TosH

Clock in (OSC1) Low or High

Time

50*

—

XT oscillator

20*

—

HS oscillator

2.0*

—

μs

LP oscillator

TosR, TosF

Clock in (OSC1) Rise or Fall

Time

—

25*

XT oscillator

—

HS oscillator

—

50*

LP oscillator

These parameters are characterized but not tested.

† Data in the Typical (“Typ”) column is at 5V, 25°C unless otherwise stated. These parameters are for design

guidance only and are not tested.

Note 1:

All specified values are based on characterization data for that particular oscillator type under standard

operating conditions with the device executing code. Exceeding these specified limits may result in an

unstable oscillator operation and/or higher than expected current consumption.

When an external clock input is used, the “max” cycle time limit is “DC” (no clock) for all devices.

Instruction cycle period (TCY) equals four times the input oscillator time base period.

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