PIC16LC71T-20E/SO データシートの表示（PDF） - Microchip Technology

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PIC16LC71T-20E/SO

8-Bit CMOS Microcontrollers with A/D Converter

Microchip Technology 

PIC16C71X

11.5 Timing Diagrams and Specifications

FIGURE 11-2: EXTERNAL CLOCK TIMING

Q4

Q1

Q2

Applicable Devices 710 71 711 715

Q3

Q4

Q1

OSC1

CLKOUT

1

3

3

4

4

2

TABLE 11-2: EXTERNAL CLOCK TIMING REQUIREMENTS

Parameter Sym Characteristic

No.

Min Typ† Max Units Conditions

1

2

3

4

†

Note 1:

Fosc External CLKIN Frequency

(Note 1)

DC

—

DC

—

4

MHz XT 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

Tosc External CLKIN Period

(Note 1)

250 —

250 —

—

ns XT 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 —

50

—

250

ns HS osc mode (-10)

250

ns HS osc mode (-20)

5

—

—

µs LP osc mode

TCY Instruction Cycle Time (Note 1) 200

—

DC

ns TCY = 4/FOSC

TosL, External Clock in (OSC1) High 50

—

TosH or Low Time

2.5

—

—

ns XT oscillator

—

µs LP oscillator

10

—

—

ns HS oscillator

TosR, External Clock in (OSC1) Rise —

—

TosF or Fall Time

—

—

25

ns XT oscillator

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.

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

consumption. 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. OSC2 is disconnected

(has no loading) for the PIC16C710/711.

© 1997 Microchip Technology Inc.

DS30272A-page 95

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