PIC18LF4682-I/ML View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18LF4682-I/ML

28/40/44-Pin Enhanced Flash Microcontrollers with ECAN™ Technology, 10-Bit A/D and nanoWatt Technology

Microchip Technology 

PIC18F2682/2685/4682/4685

FIGURE 27-9:

TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS

T0CKI

T1OSO/T13CKI

40

41

42

45

46

TMR0 or

TMR1

47

48

Note: Refer to Figure 27-4 for load conditions.

TABLE 27-11: TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS

Param

No.

Sym

Characteristic

Min

Max Units Conditions

40 TT0H

T0CKI High Pulse Width

No prescaler 0.5 TCY + 20 — ns

With prescaler

10

— ns

41 TT0L

T0CKI Low Pulse Width

No prescaler 0.5 TCY + 20 — ns

With prescaler

10

— ns

42 TT0P

T0CKI Period

No prescaler

TCY + 10

— ns

With prescaler Greater of: —

20 ns or

(TCY + 40)/N

ns N = prescale value

(1, 2, 4,..., 256)

45 TT1H

T13CKI High Synchronous, no prescaler

0.5 TCY + 20 —

Time

Synchronous, PIC18FXXXX

10

—

with prescaler PIC18LFXXXX

25

—

ns

ns

ns VDD = 2.0V

Asynchronous PIC18FXXXX

30

— ns

PIC18LFXXXX

50

—

ns VDD = 2.0V

46 TT1L

T13CKI Low Synchronous, no prescaler

0.5 TCY + 5

—

ns

Time

Synchronous, PIC18FXXXX

10

— ns

with prescaler PIC18LFXXXX

25

—

ns VDD = 2.0V

Asynchronous PIC18FXXXX

30

— ns

PIC18LFXXXX

50

—

ns VDD = 2.0V

47 TT1P

T13CKI Input Synchronous

Period

Greater of: —

20 ns or

(TCY + 40)/N

ns N = prescale value

(1, 2, 4, 8)

Asynchronous

60

— ns

FT1

T13CKI Oscillator Input Frequency Range

DC

50 kHz

48 TCKE2TMRI Delay from External T13CKI Clock Edge to

Timer Increment

2 TOSC

7 TOSC —

© 2007 Microchip Technology Inc.

Preliminary

DS39761B-page 439

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