PIC16F84A-04SLASHPSQTP datasheet(59/88 Pages) MICROCHIP

59 / 88 page

DS35007B-page 57

PIC16F84A

9.3.3

TIMING DIAGRAMS AND SPECIFICATIONS

FIGURE 9-6:

EXTERNAL CLOCK TIMING

OSC1

CLKOUT

TABLE 9-2:

EXTERNAL CLOCK TIMING REQUIREMENTS

Param No.

Sym

Characteristic

Min

Typ†

Max

Units

Conditions

FOSC

External CLKIN Frequency(1)

—

MHz

XT, RC osc

(-04, LF)

—

MHz

XT, RC osc

(-04)

—

MHz

HS osc

(-20)

—

200

kHz

LP osc

(-04, LF)

Oscillator Frequency(1)

—

MHz

RC osc

(-04, LF)

—

MHz

RC osc

(-04)

0.1

—

MHz

XT osc

(-04, LF)

0.1

—

MHz

XT osc

(-04)

1.0

—

MHz

HS osc

(-20)

—

200

kHz

LP osc

(-04, LF)

1TOSC

External CLKIN Period(1)

500

—

XT, RC osc

(-04, LF)

250

—

XT, RC osc

(-04)

—

HS osc

(-20)

5.0

—

µs

LP osc

(-04, LF)

Oscillator Period(1)

500

—

RC osc

(-04, LF)

250

—

RC osc

(-04)

500

—

10,000

XT osc

(-04, LF)

250

—

10,000

XT osc

(-04)

—

1,000

HS osc

(-20)

5.0

—

µs

LP osc

(-04, LF)

2TCY

Instruction Cycle Time(1)

0.2

4/FOSC

µs

TosL,

TosH

Clock in (OSC1) High or Low

Time

—

XT osc

(-04, LF)

—

XT osc

(-04)

2.0

—

µs

LP osc

(-04, LF)

17.5

—

HS osc

(-20)

4TosR,

TosF

Clock in (OSC1) Rise or Fall

Time

—

XT osc

(-04)

—

LP osc

(-04, LF)

7.5

—

HS osc

(-20)

†

Data in "Typ" column is at 5.0V, 25

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

only and are not tested.

Note 1: Instruction cycle period (TCY) equals four times the input oscillator time-base period. 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 opera-

tion and/or higher than expected current consumption. All devices are tested to operate at "Min." values

with an external clock applied to the OSC1 pin.

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

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