PIC18F87J10 Datasheet, PDF (353/394 Pages) Microchip Technology – 64/80-Pin High-Performance, 1-Mbit Flash Microcontrollers with nanoWatt Technology

PIC18F87J10 FAMILY
26.4.3 TIMING DIAGRAMS AND SPECIFICATIONS
FIGURE 26-3:
EXTERNAL CLOCK TIMING (ALL MODES EXCEPT PLL)
Q4
Q1
Q2
Q3
Q4
Q1
OSC1
CLKO
1
3
3
4
4
2
TABLE 26-6: EXTERNAL CLOCK TIMING REQUIREMENTS
Param.
No.
Symbol
Characteristic
Min
Max Units
Conditions
1A
FOSC
External CLKI Frequency⁽¹⁾
DC
Oscillator Frequency⁽¹⁾
DC
1
TOSC
External CLKI Period⁽¹⁾
25
40
MHz HS Oscillator mode
40
MHz HS Oscillator mode
—
ns HS Oscillator mode
Oscillator Period⁽¹⁾
25
250
ns HS Oscillator mode
2
TCY
Instruction Cycle Time⁽¹⁾
100
—
ns TCY = 4/FOSC, Industrial
3
TOSL, External Clock in (OSC1)
10
TOSH
High or Low Time
—
ns HS Oscillator mode
4
TOSR, External Clock in (OSC1)
—
7.5
ns HS Oscillator mode
TOSF
Rise or Fall Time
Note 1:
Instruction cycle period (TCY) equals four times the input oscillator time base period for all configurations
except PLL. 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 the OSC1/CLKI pin. When an external clock
input is used, the “max.” cycle time limit is “DC” (no clock) for all devices.
 2005 Microchip Technology Inc.
Advance Information
DS39663A-page 351