PIC18F2220 MICROCHIP [Microchip Technology], PIC18F2220 Datasheet - Page 327

• Manufacturer Part Number: PIC18F2220
• Description: 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

26.4.3
FIGURE 26-6:
TABLE 26-6:
 2003 Microchip Technology Inc.
1A
1
2
3
4
Note 1:
Param.
No.
OSC1
CLKO
F
T
T
T
T
T
T
Instruction cycle period (T
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.
Symbol
OSC
CY
OS
OS
OS
OS
TIMING DIAGRAMS AND SPECIFICATIONS
OSC
L,
H
R,
F
EXTERNAL CLOCK TIMING REQUIREMENTS
External CLKI Frequency
Oscillator Frequency
External CLKI 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 (ALL MODES EXCEPT PLL)
Q4
Characteristic
CY
(1)
) equals four times the input oscillator time base period for all configurations
Q1
1
(1)
(1)
(1)
PIC18F2220/2320/4220/4320
(1)
Min
250
100
160
100
160
DC
DC
DC
0.1
2.5
25
40
40
30
30
10
—
—
—
Q2
4
4
4
5
1
2
3
Max
6.25
250
250
250
7.5
40
25
25
10
33
—
—
—
—
—
—
—
—
—
—
20
50
4
1
Q3
3
Units
MHz
MHz
MHz
MHz
MHz
MHz
MHz
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
s
s
Q4
4
EC, ECIO (industrial)
EC, ECIO (extended)
RC osc
XT osc
HS osc
HS + PLL osc (industrial)
HS + PLL osc (extended)
LP Osc mode
EC, ECIO (industrial)
EC, ECIO (extended)
RC osc
XT osc
HS osc
HS + PLL osc (industrial)
HS + PLL osc (extended)
LP osc
T
T
XT osc
LP osc
HS osc
XT osc
LP osc
HS osc
CY
CY
= 4/F
= 4/F
4
OSC
OSC
Conditions
DS39599C-page 325
(industrial)
(extended)
Q1