PIC18F1XK22 Datasheet, PDF (350/388 Pages) Microchip Technology – 20-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC18F1XK22/LF1XK22
TABLE 25-1: CLOCK OSCILLATOR TIMING REQUIREMENTS
Param.
No.
Symbol
Characteristic
Min.
Max. Units
Conditions
1A
FOSC
External CLKIN
Frequency⁽¹⁾
DC
64
MHz EC, ECIO Oscillator mode,
(Industrial range devices)
Oscillator Frequency⁽¹⁾
DC
48
MHz EC, ECIO Oscillator mode,
(Extended range devices)
DC
4
MHz RC Oscillator mode
0.1
4
MHz XT Oscillator mode
4
25
MHz HS Oscillator mode
4
16
MHz HS + PLL Oscillator mode,
(Industrial range devices)
4
12
MHz HS + PLL Oscillator mode,
(Extended range devices)
5
33
kHz LP Oscillator mode
1
TOSC
External CLKIN Period⁽¹⁾
15.6
—
ns EC, ECIO Oscillator mode,
85°C to 125°C
Oscillator Period⁽¹⁾
250
—
ns RC Oscillator mode
250
10,000 ns XT Oscillator mode
40
250
ns HS Oscillator mode
62.5
250
ns HS + PLL Oscillator mode,
(Industrial range devices)
83.3
250
ns HS + PLL Oscillator mode,
(Extended range devices)
30
200
s LP Oscillator mode
2
TCY
Instruction Cycle Time⁽¹⁾
62.5
—
ns TCY = 4/FOSC
3
TOSL, External Clock in (OSC1)
30
—
ns XT Oscillator mode
TOSH
High or Low Time
2.5
—
s LP Oscillator mode
10
—
ns HS Oscillator mode
4
TOSR, External Clock in (OSC1)
—
TOSF
Rise or Fall Time
—
20
ns XT Oscillator mode
50
ns LP Oscillator mode
—
7.5
ns HS Oscillator mode
* These parameters are characterized but not tested.
† Data in “Typ” column is at 3V, 25°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
Note 1:
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
consumption. 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.
DS41365D-page 350
Preliminary
 2010 Microchip Technology Inc.