PIC16C926-TL 查看數據表（PDF） - Microchip Technology

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PIC16C926-TL

64/68-Pin CMOS Microcontrollers with LCD Driver

Microchip Technology 

PIC16C925/926

FIGURE 15-7:

RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP

TIMER TIMING

VDD

MCLR

Internal

POR

PWRT

Time-out

OSC

Time-out

Internal

RESET

Watchdog

Timer

RESET

33

32

I/O Pins

Note: Refer to Figure 15-4 for load conditions.

30

34

31

34

TABLE 15-5: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP

TIMER REQUIREMENTS

Parameter

No.

Symbol

Characteristic

Min

Typ†

Max Units

Conditions

30

TmcL MCLR Pulse Width (low)

2

—

—

µs

31

TWDT Watchdog Timer Time-out Period

7

18

33 ms VDD = 5V, -40°C to +85°C

(No Prescaler)

32

TOST

Oscillation Start-up Timer Period

— 1024TOSC —

— TOSC = OSC1 period

33

TPWRT Power-up Timer Period

28

72

132 ms VDD = 5V, -40°C to +85°C

34

TIOZ

I/O Hi-impedance from MCLR Low —

—

2.1 µs

or Watchdog Timer Reset

† Data in “Typ” column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and are not

tested.

 2001 Microchip Technology Inc.

Preliminary

DS39544A-page 149

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