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PIC18F-LF1XK50 Datasheet, PDF (381/420 Pages) Microchip Technology – 20-Pin USB Flash Microcontrollers
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PIC18F/LF1XK50
TABLE 27-1: CLOCK OSCILLATOR TIMING REQUIREMENTS
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C  TA  +125°C
Param
No.
Sym
Characteristic
Min Typ† Max Units
Conditions
OS01 FOSC External CLKIN Frequency(1)
DC
—
37
kHz EC Oscillator mode (low)
DC
—
4
MHz EC Oscillator mode (medium)
Oscillator Frequency(1)
DC
—
48
— 32.768 —
MHz EC Oscillator mode (high)
kHz LP Oscillator mode
0.1
—
4
MHz XT Oscillator mode
1
—
20
MHz HS Oscillator mode
OS02 TOSC External CLKIN Period(1)
DC
—
27
—
4
MHz RC Oscillator mode

s LP Oscillator mode
250
—

ns XT Oscillator mode
50
—

ns HS Oscillator mode
Oscillator Period(1)
20.80
—
—
—

ns EC Oscillator mode
—
s LP Oscillator mode
250
— 10,000 ns XT Oscillator mode
50
—
1,000
ns HS Oscillator mode
OS03 TCY
Instruction Cycle Time(1)
250
—
—
ns RC Oscillator mode
83
TCY
DC
ns TCY = 4/FOSC
OS04* TosH, External CLKIN High,
TosL External CLKIN Low
2
—
100
—
—
s LP oscillator
—
ns XT oscillator
20
—
—
ns HS oscillator
OS05* TosR, External CLKIN Rise,
TosF External CLKIN Fall
0
—

ns LP oscillator
0
—

ns XT oscillator
0
—

ns HS oscillator
*
†
Note 1:
These parameters are characterized but not tested.
Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
Instruction cycle period (TCY) equals four times the input oscillator time base period. 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 con-
sumption. All devices are tested to operate at “min” values with an external clock applied to OSC1 pin. When an external
clock input is used, the “max” cycle time limit is “DC” (no clock) for all devices.
 2010 Microchip Technology Inc.
Preliminary
DS41350E-page 381
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