PIC16LC717T-I/SO View Datasheet(PDF) - Microchip Technology
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Description
Manufacturer
PIC16LC717T-I/SO Datasheet PDF : 200 Pages
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PIC16C717/770/771
FIGURE 15-6: EXTERNAL CLOCK TIMING
Q4
Q1
Q2
Q3
OSC1
CLKOUT
1
3
3
2
Q4
Q1
4
4
TABLE 15-2: EXTERNAL CLOCK TIMING REQUIREMENTS
Parameter Sym Characteristic
No.
Min Typ† Max Units Conditions
1A
FOSC External CLKIN Frequency
(Note 1)
DC
—
DC
—
4
MHz XT osc mode
20
MHz EC osc mode
DC
—
20
MHz HS osc mode
DC
—
200
kHz LP osc mode
Oscillator Frequency
(Note 1)
0.1
—
4
—
5
—
4
MHz XT osc mode
20
MHz HS osc mode
200
kHz LP osc mode
1
TOSC External CLKIN Period
(Note 1)
250
—
50
—
—
ns XT and RC osc mode
—
ns EC osc mode
50
—
—
ns HS osc mode
5
—
—
µs LP osc mode
Oscillator Period
(Note 1)
250
—
10,000 ns XT osc mode
50
—
250
ns HS osc mode
5
—
—
µs LP osc mode
2
TCY Instruction Cycle Time (Note 1)
200 TCY
DC
ns TCY = 4/FOSC
3*
TosL, External Clock in (OSC1) High or
100
—
—
ns XT oscillator
TosH Low Time
2.5
—
—
µs LP oscillator
15
—
—
ns HS oscillator
EC oscillator
4*
TosR, External Clock in (OSC1) Rise or
—
—
25
ns XT oscillator
TosF Fall Time
—
—
50
ns LP oscillator
—
—
15
ns HS oscillator
EC oscillator
*
†
Note 1:
These parameters are characterized but not tested.
Data in "Typ" column is at 5V, 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 the OSC1/CLKIN pin.
When an external clock input is used, the "Max." cycle time limit is "DC" (no clock) for all devices.
© 1999 Microchip Technology Inc.
Advanced Information
DS41120A-page 163
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