PIC18F452I/L Microchip Technology, PIC18F452I/L Datasheet - Page 277
PIC18F452I/L
Manufacturer Part Number
PIC18F452I/L
Description
IC, 8BIT MCU, PIC18F, 40MHZ, LCC-44
Manufacturer
Microchip Technology
Datasheet
1.PIC18F242-ISO.pdf
(332 pages)
Specifications of PIC18F452I/L
Controller Family/series
PIC18
No. Of I/o's
34
Eeprom Memory Size
256Byte
Ram Memory Size
1.5KB
Cpu Speed
40MHz
No. Of Timers
4
Core Size
8 Bit
Program Memory Size
16 KWords
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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FIGURE 22-9:
TABLE 22-8:
© 2006 Microchip Technology Inc.
Param
40
41
42
45
46
47
48
No.
Note:
T1OSO/T1CKI
Tt0H
Tt0L
Tt0P
Tt1H
Tt1L
Tt1P
Ft1
Tcke2tmrI Delay from external T1CKI clock edge to timer
Symbol
TMR0 or
TMR1
T0CKI
Refer to Figure 22-4 for load conditions.
TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
T0CKI High Pulse Width
T0CKI Low Pulse Width
T0CKI Period
T1CKI High
Time
T1CKI Low
Time
T1CKI input
period
T1CKI oscillator input frequency range
increment
TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
Synchronous, no prescaler
Synchronous,
with prescaler
Asynchronous
Synchronous, no prescaler
Synchronous,
with prescaler
Asynchronous
Synchronous
Asynchronous
Characteristic
40
45
With Prescaler
No Prescaler
With Prescaler
No Prescaler
With Prescaler
PIC18FXXX
PIC18LFXXX
PIC18FXXX
PIC18LFXXX
PIC18FXXX
PIC18LFXXX
PIC18FXXX
PIC18LFXXX
No Prescaler
42
47
20 n
20 n
41
46
0.5T
0.5T
0.5T
Greater of:
0.5T
Greater of:
T
S
S
2 T
CY
or T
or T
Min
CY
CY
CY
DC
10
10
10
25
30
50
10
25
30
50
60
CY
OSC
+ 10
CY
CY
+ 20
+ 20
+ 20
+ 5
N
N
+ 40
+ 40
7 T
Max
PIC18FXX2
50
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
OSC
48
Units
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
—
DS39564C-page 275
N = prescale
value
(1, 2, 4,..., 256)
N = prescale
value
(1, 2, 4, 8)
Conditions
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