PIC16C54C-40E/SS View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16C54C-40E/SS

EPROM/ROM-Based 8-bit CMOS Microcontroller Series

Microchip Technology 

PIC16C5X

17.5 Timing Diagrams and Specifications

FIGURE 17-6:

EXTERNAL CLOCK TIMING - PIC16C5X, PIC16CR5X

Q4

Q1

Q2

Q3

Q4

Q1

OSC1

1

3

3

4

4

2

CLKOUT

TABLE 17-1: EXTERNAL CLOCK TIMING REQUIREMENTS - PIC16C5X, PIC16CR5X

AC Characteristics

Standard Operating Conditions (unless otherwise specified)

Operating Temperature

0C  TA  +70C for commercial

–40C  TA  +85C for industrial

–40C  TA  +125C for extended

Param

No.

Symbol

Characteristic

Min Typ† Max Units

Conditions

FOSC External CLKIN Frequency(1)

DC — 4.0 MHz XT OSC mode

DC — 4.0 MHz HS OSC mode (04)

DC —

20 MHz HS OSC mode (20)

Oscillator Frequency(1)

DC — 200 kHz LP OSC mode

DC — 4.0 MHz RC OSC mode

0.45 — 4.0 MHz XT OSC mode

4.0 — 4.0 MHz HS OSC mode (04)

4.0 —

20 MHz HS OSC mode (20)

5.0 — 200 kHz LP OSC mode

1

TOSC External CLKIN Period(1)

250 —

— ns XT OSC mode

250 —

— ns HS OSC mode (04)

50 —

— ns HS OSC mode (20)

Oscillator Period(1)

5.0 —

250 —

— s LP OSC mode

— ns RC OSC mode

250 — 2,200 ns XT OSC mode

250 — 250 ns HS OSC mode (04)

50 — 250 ns HS OSC mode (20)

5.0 — 200 s LP OSC mode

* These parameters are characterized but not tested.

† 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.

Note 1: All specified values are based on characterization data for that particular oscillator type under standard oper-

ating conditions 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.

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

DS30453E-page 140

Preliminary

 1997-2013 Microchip Technology Inc.

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