PIC12F508-I/SL View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC12F508-I/SL

8/14-Pin, 8-Bit Flash Microcontrollers

Microchip Technology 

PIC12F508/509/16F505

TABLE 10-3: EXTERNAL CLOCK TIMING REQUIREMENTS – PIC12F508/509/16F505

AC CHARACTERISTICS

Standard Operating Conditions (unless otherwise specified)

Operating Temperature -40°C ≤ TA ≤ +85°C (industrial),

-40°C ≤ TA ≤ +125°C (extended)

Operating Voltage VDD range is described in Section 10.1 "Power-

on Reset (POR)"

Param

No.

Sym.

Characteristic

Min. Typ(1) Max. Units

Conditions

1A

FOSC External CLKIN Frequency(2) DC

—

4 MHz XT Oscillator mode

DC —

20 MHz EC, HS Oscillator mode

(PIC16F505 only)

Oscillator Frequency(2)

DC —

—

—

200 kHz LP Oscillator mode

4 MHz EXTRC Oscillator mode

0.1 —

4 MHz XT Oscillator mode

4

—

20 MHz HS Oscillator mode (PIC16F505

only)

—

—

200 kHz LP Oscillator mode

1

TOSC External CLKIN Period(2)

250 —

— ns XT Oscillator mode

50 —

— ns EC, HS Oscillator mode

(PIC16F505 only)

Oscillator Period(2)

5

—

250 —

— μs LP Oscillator mode

— ns EXTRC Oscillator mode

250 — 10,000 ns XT Oscillator mode

50

—

250 ns HS Oscillator mode (PIC16F505

only)

5

—

— μs LP Oscillator mode

2

TCY Instruction Cycle Time

200 4/FOSC —

ns

3

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

— ns XT Oscillator

TosH Time

2*

—

— μs LP Oscillator

10* —

— ns EC, HS Oscillator

(PIC16F505 only)

4

TosR, Clock in (OSC1) Rise or Fall —

—

25* ns XT Oscillator

TosF Time

—

—

50* ns LP Oscillator

—

—

15* ns EC, HS Oscillator

(PIC16F505 only)

* 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 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.

DS41236E-page 76

© 2009 Microchip Technology Inc.

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