PIC16F526 Datasheet, PDF (91/122 Pages) Microchip Technology – 14-Pin, 8-Bit Flash Microcontroller

FIGURE 14-4:
OSC1
EXTERNAL CLOCK TIMING
Q4
Q1
Q2
Q3
1
3
3
2
PIC16F526
Q4
Q1
4
4
TABLE 14-6: EXTERNAL CLOCK TIMING REQUIREMENTS
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 14.1 “DC
Characteristics: PIC16F526 (Industrial)”
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 HS/EC Oscillator mode
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/EC Oscillator mode
—
—
200 kHz LP Oscillator mode
1
TOSC External CLKIN Period⁽²⁾
250 —
— ns XT Oscillator mode
50 —
— ns HS/EC Oscillator mode
Oscillator Period⁽²⁾
5
—
250 —
— s LP Oscillator mode
— ns EXTRC Oscillator mode
250 — 10,000 ns XT Oscillator mode
50
—
250 ns HS/EC Oscillator mode
5
—
— s 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*
—
— s LP Oscillator
10* —
— ns HS/EC Oscillator
4
TosR, Clock in (OSC1) Rise or Fall —
—
25* ns XT Oscillator
TosF Time
—
—
50* ns LP Oscillator
—
—
15* ns HS/EC 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 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.
 2010 Microchip Technology Inc.
DS41326D-page 91