CF745 datasheet(125/217 Pages) MICROCHIP

125 / 217 page

Preliminary

DS30453B-page 125

PIC16CR57B

PIC16C5X

15.7

Timing Diagrams and Speciﬁcations

FIGURE 15-2: EXTERNAL CLOCK TIMING - PIC16CR57B

TABLE 15-2:

EXTERNAL CLOCK TIMING REQUIREMENTS - PIC16CR57B

AC Characteristics

Standard Operating Conditions (unless otherwise speciﬁed)

Operating Temperature

°C ≤ TA ≤ +70°C (commercial)

–40

°C ≤ TA ≤ +85°C (industrial)

–40

°C ≤ TA ≤ +125°C (extended)

Operating Voltage VDD range is described in Section 15.1, Section 15.2 and Section 15.3.

Parameter

No.

Sym

Characteristic

Min

Typ

(1)

Max

Units

Conditions

FOSC

External CLKIN Frequency

(2)

—

4.0

MHz

XT osc mode

—

4.0

MHz

HS osc mode (04)

—

MHz

HS osc mode (10)

—

MHz

HS osc mode (20)

—

200

kHz

LP osc mode

Oscillator Frequency

(2)

—

4.0

MHz

RC osc mode

0.1

—

4.0

MHz

XT osc mode

4.0

—

4.0

MHz

HS osc mode (04)

4.0

—

MHz

HS osc mode (10)

4.0

—

MHz

HS osc mode (20)

5.0

—

200

kHz

LP osc mode

These parameters are characterized but not tested.

Note 1:

Data in the Typical (“Typ”) column is at 5.0V, 25

°C unless otherwise stated. These parameters are for design guidance only

and are not tested.

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.

OSC1

CLKOUT

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