PIC16C621A Microchip Technology Inc., PIC16C621A Datasheet - Page 106

• Manufacturer Part Number: PIC16C621A
• Description: Eprom-based 8-bit Cmos Microcontrollers
• Manufacturer: Microchip Technology Inc.

PIC16C62X
12.9
FIGURE 12-12:
TABLE 12-3:
DS30235J-page 104
Note 1:
Parameter
No.
1A
3*
4*
1
2
CLKOUT
2: *
3: †
OSC1
Timing Diagrams and Specifications
Fosc
Tosc
T
TosL,
TosH
TosR,
TosF
CY
Sym
are not tested.
These parameters are characterized but not tested.
Data in "Typ" column is at 5.0V, 25°C unless otherwise stated. These parameters are for design guidance only and
Instruction cycle period (T
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 pin. When an external clock input is used, the "Max." cycle time limit is "DC" (no clock) for all devices.
EXTERNAL CLOCK TIMING REQUIREMENTS
External CLKIN Frequency
Oscillator Frequency
External CLKIN Period
Oscillator Period
Instruction Cycle Time
External Clock in (OSC1) High or
Low Time
External Clock in (OSC1) Rise or
Fall Time
EXTERNAL CLOCK TIMING
Q4
Characteristic
(1)
CY
Q1
(1)
) equals four times the input oscillator time-base period. All specified values are based
(1)
1
(1)
(1)
Q2
100*
Min
250
250
250
20*
25*
50*
15*
DC
DC
DC
DC
0.1
DC
1.0
50
50
2*
1
5
5
2
F
Typ†
OSC
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3
/4
Q3
10,000
1,000
Max
3
200
200
DC
20
20
—
—
—
—
—
—
—
—
—
—
—
4
4
4
Units
MHz
MHz
MHz
MHz
MHz
kHz
kHz
µs
µs
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Q4
4
XT and RC Osc mode, V
HS Osc mode
LP Osc mode
RC Osc mode, V
XT Osc mode
HS Osc mode
LP Osc mode
XT and RC Osc mode
HS Osc mode
LP Osc mode
RC Osc mode
XT Osc mode
HS Osc mode
LP Osc mode
T
XT oscillator, T
LP oscillator, T
HS oscillator, T
XT oscillator
LP oscillator
HS oscillator
 2003 Microchip Technology Inc.
CYS
=F
4
OSC
Conditions
/4
Q1
OSC
OSC
OSC
DD
L/H duty cycle
L/H duty cycle
L/H duty cycle
=5.0V
DD
=5.0V