PIC16C712_13 Datasheet, PDF (81/106 Pages) Microchip Technology – 8-Bit CMOS Microcontrollers with A/D Converter and Capture/Compare/PWM

PIC16C712/716
12.4.3 TIMING DIAGRAMS AND SPECIFICATIONS
FIGURE 12-4:
EXTERNAL CLOCK TIMING
Q4
Q1
Q2
Q3
OSC1
CLKOUT
1
3
3
2
Q4
Q1
4
4
TABLE 12-2: EXTERNAL CLOCK TIMING REQUIREMENTS
Param Sym. Characteristic
No.
Min. Typ† Max. Units Conditions
1A
1
2
3*
4*
*
†
Note1:
FOSC External CLKIN Frequency
(Note 1)
DC
—
DC
—
4
MHz RC and XT osc modes
4
MHz HS osc mode (-04)
DC
—
20
MHz HS osc mode (-20)
DC
—
200 kHz LP osc mode
Oscillator Frequency
(Note 1)
DC
—
0.1
—
4
MHz RC osc mode
4
MHz XT osc mode
4
—
20
MHz HS osc mode
5
—
200
kHz LP osc mode
TOSC
External CLKIN Period
(Note 1)
250
—
250
—
—
ns RC and XT osc modes
—
ns HS osc mode (-04)
50
—
—
ns HS osc mode (-20)
5
—
—
s LP osc mode
Oscillator Period
(Note 1)
250
—
—
ns RC osc mode
250
—
10,000 ns XT osc mode
250
—
250
ns HS osc mode (-04)
50
—
250
ns HS osc mode (-20)
5
—
—
s LP osc mode
TCY Instruction Cycle Time (Note 1)
200
—
DC
ns TCY = 4/FOSC
TosL, External Clock in (OSC1) High or 100
—
TosH Low Time
2.5
—
—
ns XT oscillator
—
s LP oscillator
15
—
—
ns HS oscillator
TosR, External Clock in (OSC1) Rise or —
—
TosF Fall Time
—
—
25
ns XT oscillator
50
ns LP oscillator
—
—
15
ns HS oscillator
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 consumption. 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.
 1999-2013 Microchip Technology Inc.
DS41106C-page 81