PIC12CR509AT-04 View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC12CR509AT-04

8-Pin, 8-Bit CMOS Microcontrollers

Microchip Technology 

PIC12C5XX

13.6 Timing Diagrams and Specifications

FIGURE 13-2: EXTERNAL CLOCK TIMING - PIC12C508A, PIC12C509A, PIC12CR509A,

PIC12CE518, PIC12CE519, PIC12LC508A, PIC12LC509A, PIC12LCR509A,

PIC12LCE518 and PIC12LCE519

Q4

OSC1

Q1

Q2

Q3

Q4

Q1

1

3

3

4

4

2

TABLE 13-2: EXTERNAL CLOCK TIMING REQUIREMENTS - PIC12C508A, PIC12C509A,

PIC12CE518, PIC12CE519, PIC12LC508A, PIC12LC509A, PIC12LCR509A,

PIC12LCE518 and PIC12LCE519

AC Characteristics

Standard Operating Conditions (unless otherwise specified)

Operating Temperature

0°C ≤ TA ≤ +70°C (commercial),

–40°C ≤ TA ≤ +85°C (industrial),

–40°C ≤ TA ≤ +125°C (extended)

Operating Voltage VDD range is described in Section 13.1

Parameter

No.

Sym

Characteristic

Min Typ(1) Max Units

Conditions

FOSC External CLKIN Frequency(2)

DC —

4 MHz XT osc mode

DC — 200 kHz LP osc mode

Oscillator Frequency(2)

DC —

0.1 —

4 MHz EXTRC osc mode

4 MHz XT osc mode

DC — 200 kHz LP osc mode

1

TOSC External CLKIN Period(2)

250 —

—

ns XT osc mode

5

—

— ms LP osc mode

Oscillator Period(2)

250 —

—

ns EXTRC osc mode

250 — 10,000 ns XT osc mode

5

—

— ms LP osc mode

2

Tcy

Instruction Cycle Time(3)

— 4/FOSC —

—

3

TosL, TosH Clock in (OSC1) Low or High Time 50* —

—

ns XT oscillator

2*

—

— ms LP oscillator

4

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

—

—

25* ns XT oscillator

—

—

50* ns LP 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 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.

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

DS40139E-page 86

© 1999 Microchip Technology Inc.

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