12F683 datasheet(121/148 Pages) MICROCHIP

121 / 148 page

 2004 Microchip Technology Inc.

Preliminary

DS41211B-page 119

PIC12F683

15.6

AC Characteristics: PIC12F683 (Industrial, Extended)

FIGURE 15-3:

EXTERNAL CLOCK TIMING

TABLE 15-1:

EXTERNAL CLOCK TIMING REQUIREMENTS

Standard Operating Conditions (unless otherwise stated)

Operating temperature

-40°C

≤ TA ≤ +125°C

Param

No.

Sym

Characteristic

Min

Typ†

Max

Units

Conditions

FOSC

External CLKIN Frequency(1)

—

kHz

LP Oscillator mode

—

MHz

XT Oscillator mode

—

MHz

HS Oscillator mode

—

MHz

EC Oscillator mode

Oscillator Frequency(1)

—

kHz

LP Oscillator mode

—

MHz

INTOSC mode

—

MHz

RC Oscillator mode

0.1

—

MHz

XT Oscillator mode

—

MHz

HS Oscillator mode

1TOSC

External CLKIN Period(1)

—

µs

LP Oscillator mode

—

HS Oscillator mode

—

EC Oscillator mode

250

—

XT Oscillator mode

Oscillator Period(1)

—

200

µs

LP Oscillator mode

—

250

—

INTOSC mode

250

—

RC Oscillator mode

250

—

10,000

XT Oscillator mode

—

1,000

HS Oscillator mode

2TCY

Instruction Cycle Time(1)

200

TCY

TCY = 4/FOSC

TosL,

TosH

External CLKIN (OSC1) High

External CLKIN Low

—

µs

LP oscillator, TOSC L/H duty cycle

20*

—

HS oscillator, TOSC L/H duty cycle

100 *

—

XT oscillator, TOSC L/H duty cycle

4TosR,

TosF

External CLKIN Rise

External CLKIN Fall

—

50*

LP oscillator

—

25*

XT oscillator

—

15*

HS oscillator

These parameters are characterized but not tested.

†

Data in ‘Typ’ column is at 5V, 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 exe-

cuting code. Exceeding these specified limits may result in an unstable oscillator operation and/or higher than

expected current consumption. All devices are tested to operate at ‘min’ values with an external clock applied to

OSC1 pin. When an external clock input is used, the ‘max’ cycle time limit is ‘DC’ (no clock) for all devices.

OSC1

CLKOUT

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