PIC18F45J50-I/SOSQTP 查看數據表（PDF） - Microchip Technology

零件编号

产品描述 (功能)

生产厂家

PIC18F45J50-I/SOSQTP

28/44-Pin, Low-Power, High-Performance USB Microcontrollers with nanoWatt XLP Technology

Microchip Technology 

PIC18F46J50 FAMILY

FIGURE 30-8:

TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS

T0CKI

T1OSO/T1CKI

40

41

42

45

46

47

48

TMR0 or

TMR1

Note: Refer to Figure 30-4 for load conditions.

TABLE 30-16: TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS

Param

No.

Symbol

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:

—

ns N = prescale

20 ns or

value

(TCY + 40)/N

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

45

TT1H

T1CKI/T3CKI Synchronous, no prescaler

0.5 TCY + 20

—

ns

High Time Synchronous, with prescaler

10

—

ns

Asynchronous

30

—

ns

46

TT1L

T1CKI/T3CKI Synchronous, no prescaler

Low Time Synchronous, with prescaler

0.5 TCY + 5

10

—

ns

—

ns

Asynchronous

30

—

ns

47

TT1P

T1CKI/T3CKI Synchronous

Input Period

Greater of:

—

ns N = prescale

20 ns or

value

(TCY + 40)/N

(1, 2, 4, 8)

Asynchronous

83

—

ns

FT1

T1CKI Input Frequency Range(1)

DC

12 MHz

48

TCKE2TMRI Delay from External T1CKI Clock Edge to

Timer Increment

2 TOSC

7 TOSC —

Note 1: The Timer1 oscillator is designed to drive 32.768 kHz crystals. When T1CKI is used as a digital input,

frequencies up to 12 MHz are supported.

 2011 Microchip Technology Inc.

DS39931D-page 515

Share Link: