CF745 datasheet(179/217 Pages) MICROCHIP

179 / 217 page

Preliminary

DS30453B-page 179

PIC16C54B/C54C/CR54B/CR54C/C55A/C56A/CR56A/C57C/CR57C/C58B/CR58B

2TCY

Instruction Cycle Time

(3)

—

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

—

25*

HS oscillator

—

50*

LP oscillator

TABLE 19-2:

EXTERNAL CLOCK TIMING REQUIREMENTS - PIC16C5X, PIC16CR5X (CON’T)

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 19.1, Section 19.2 and Section 19.3.

Parameter

No.

Sym

Characteristic

Min

Typ

(1)

Max

Units

Conditions

These parameters are characterized but not tested.

Note 1:

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.

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

tions 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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