Datasheet

© 2007 Microchip Technology Inc. DS41268D-page 91
PIC12F510/16F506
TABLE 13-4: EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions (unless otherwise specified)
Operating Temperature -40°C ≤ TA ≤ +85°C (industrial),
-40°C ≤ T
A ≤ +125°C (extended)
Para
No.
Sym Characteristic Min Typ
(1)
Max Units Conditions
1A F
OSC External CLKIN Frequency
(2)
DC — 4 MHz XT Oscillator mode
DC — 20 MHz HS/EC Oscillator mode
(PIC16F506 only)
DC — 200 kHz LP Oscillator mode
Oscillator Frequency
(2)
— — 4 MHz EXTRC Oscillator mode
0.1 — 4 MHz XT Oscillator mode
4 — 20 MHz HS/EC Oscillator mode
(PIC16F506 only)
— — 200 kHz LP Oscillator mode
1T
OSC External CLKIN Period
(2)
250 — — ns XT Oscillator mode
50 — — ns HS/EC Oscillator mode
(PIC16F506 only)
5— —μs LP Oscillator mode
Oscillator Period
(2)
250 — — ns EXTRC Oscillator mode
250 — 10,000 ns XT Oscillator mode
50 — 250 ns HS/EC Oscillator mode
(PIC16F506 only)
5— —μs LP Oscillator mode
2T
CY Instruction Cycle Time 200 4/FOSC —ns
3TosL,
To s H
Clock in (OSC1) Low or High
Time
50* — — ns XT Oscillator
2* — — μs LP Oscillator
10 — — ns HS/EC Oscillator
(PIC16F506 only)
4TosR,
To s F
Clock in (OSC1) Rise or Fall
Time
— — 25* ns XT Oscillator
— — 50* ns LP Oscillator
— — 15 ns HS/EC Oscillator
(PIC16F506 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.