PIC16F526 datasheet(91/122 Pages) MICROCHIP

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 2010 Microchip Technology Inc.

DS41326D-page 91

PIC16F526

FIGURE 14-4:

EXTERNAL CLOCK TIMING

TABLE 14-6:

EXTERNAL CLOCK TIMING REQUIREMENTS

AC CHARACTERISTICS

Standard Operating Conditions (unless otherwise specified)

Operating Temperature -40

C  TA  +85C (industrial),

-40

C  TA  +125C (extended)

Operating Voltage VDD range is described in Section 14.1 “DC

Characteristics: PIC16F526 (Industrial)”

Param

No.

Sym.

Characteristic

Min.

Typ.(1)

Max.

Units

Conditions

FOSC

External CLKIN Frequency(2)

—

MHz XT Oscillator mode

—

MHz HS/EC Oscillator mode

—

200

kHz

LP Oscillator mode

Oscillator Frequency(2)

—

MHz EXTRC Oscillator mode

0.1

—

MHz XT Oscillator mode

—

MHz HS/EC Oscillator mode

—

200

kHz

LP Oscillator mode

1TOSC

External CLKIN Period(2)

250

—

XT Oscillator mode

—

HS/EC Oscillator mode

5—

—

s

LP Oscillator mode

Oscillator Period(2)

250

—

EXTRC Oscillator mode

250

—

10,000

XT Oscillator mode

—

250

HS/EC Oscillator mode

5—

—

s

LP Oscillator mode

2TCY

Instruction Cycle Time

200

4/FOSC

—ns

TosL,

TosH

Clock in (OSC1) Low or High

Time

50*

—

XT Oscillator

—

s

LP Oscillator

10*

—

HS/EC Oscillator

4TosR,

TosF

Clock in (OSC1) Rise or Fall

Time

—

25*

XT Oscillator

—

50*

LP Oscillator

—

15*

HS/EC Oscillator

* 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 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.

OSC1

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