PIC16C65T-20/SS データシートの表示（PDF） - Microchip Technology

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PIC16C65T-20/SS

8-Bit CMOS Microcontrollers

Microchip Technology 

PIC16C6X

18.5

Applicable Devices 61 62 62A R62 63 R63 64 64A R64 65 65A R65 66 67

Timing Diagrams and Specifications

FIGURE 18-2: EXTERNAL CLOCK TIMING

Q4

Q1

Q2

Q3

Q4

Q1

OSC1

CLKOUT

1

3

3

4

4

2

TABLE 18-2: EXTERNAL CLOCK TIMING REQUIREMENTS

Parameter Sym Characteristic

No.

Min Typ† Max Units Conditions

Fosc External CLKIN Frequency

(Note 1)

DC

—

DC

—

4

MHz XT and RC osc mode

4

MHz HS osc mode (-04)

DC

—

10

MHz HS osc mode (-10)

DC

—

20

MHz HS osc mode (-20)

DC

—

200 kHz LP osc mode

Oscillator Frequency

(Note 1)

DC

—

0.1

—

4

MHz RC osc mode

4

MHz XT osc mode

4

—

20

MHz HS osc mode

5

—

200 kHz LP osc mode

1

Tosc External CLKIN Period

(Note 1)

250 —

250 —

—

ns XT and RC osc mode

—

ns HS osc mode (-04)

100 —

—

ns HS osc mode (-10)

50

—

—

ns HS osc mode (-20)

5

—

—

µs LP osc mode

Oscillator Period

(Note 1)

250 —

—

ns RC osc mode

250 — 10,000 ns XT osc mode

250 —

250

ns HS osc mode (-04)

100 —

250

ns HS osc mode (-10)

50

—

1,000 ns HS osc mode (-20)

5

—

—

µs LP osc mode

2

TCY Instruction Cycle Time (Note 1) 200 TCY

DC

ns TCY = 4/FOSC

3

TosL, External Clock in (OSC1) High 100 —

—

ns XT oscillator

TosH or Low Time

2.5

—

—

µs LP oscillator

15

—

—

ns HS oscillator

4

TosR, External Clock in (OSC1) Rise —

—

25

ns XT oscillator

TosF or Fall Time

—

—

50

ns LP oscillator

—

—

15

ns HS oscillator

† 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 executing code.

Exceeding these specified limits may result in an unstable oscillator operation and/or higher than expected current con-

sumption. All devices are tested to operate at "min." values with an external clock applied to the OSC1/CLKIN pin.

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

© 1997 Microchip Technology Inc.

DS30234D-page 189

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