PIC16CR58AT-04I/SP 데이터 시트보기 (PDF) - Microchip Technology

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PIC16CR58AT-04I/SP

EPROM/ROM-Based 8-Bit CMOS Microcontroller Series

Microchip Technology 

PIC16C52

PIC16C5X

10.4 Timing Diagrams and Specifications

FIGURE 10-2: EXTERNAL CLOCK TIMING - PIC16C52

Q4

OSC1

CLKOUT

Q1

Q2

Q3

1

3

3

2

Q4

Q1

4

4

TABLE 10-1: EXTERNAL CLOCK TIMING REQUIREMENTS - PIC16C52

AC Characteristics

Standard Operating Conditions (unless otherwise specified)

Operating Temperature

0°C ≤ TA ≤ +70°C (commercial)

–40°C ≤ TA ≤ +85°C (industrial)

Operating Voltage VDD range is described in Section 10.1.

Parameter

No.

Sym

Characteristic

Min Typ(1) Max Units

Conditions

FOSC

External CLKIN Frequency(2)

Oscillator Frequency(2)

DC —

DC —

4 MHz XT osc mode

4 MHz RC osc mode

1

TOSC External CLKIN Period(2)

0.1 —

250 —

4 MHz XT osc mode

— ns RC osc mode

Oscillator Period(2)

250 —

250 —

— ns XT osc mode

— ns RC osc mode

2

TCY

Instruction Cycle Time(3)

250 — 10,000 ns

— 4/FOSC —

—

XT osc mode

3

TosL, TosH Clock in (OSC1) Low or High Time 85* —

— ns XT oscillator

4

TosR, TosF Clock in (OSC1) Rise or Fall Time

—

—

25* ns XT 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.

2: All specified values are based on characterization data for that particular oscillator type under standard operating condi-

tions 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.

3: Instruction cycle period (TCY) equals four times the input oscillator time base period.

© 1998 Microchip Technology Inc.

Preliminary

DS30453B-page 63

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