PIC12F508-I/SL 查看數據表（PDF） - Microchip Technology

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PIC12F508-I/SL

8/14-Pin, 8-Bit Flash Microcontrollers

Microchip Technology 

PIC12F508/509/16F505

FIGURE 7-7:

VDD

SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT

Power-up

Detect

POR (Power-on Reset)

(GP3/RB3)/MCLR/VPP

MCLR Reset

S

MCLRE

WDT Time-out

Pin Change

Sleep

WDT Reset

Wake-up on pin Change Reset

R

Start-up Timer

(10 μs or 18 ms)

Q

Q

CHIP Reset

FIGURE 7-8:

TIME-OUT SEQUENCE ON POWER-UP (MCLR PULLED LOW)

VDD

MCLR

Internal POR

TDRT

DRT Time-out

Internal Reset

FIGURE 7-9:

TIME-OUT SEQUENCE ON POWER-UP (MCLR TIED TO VDD): FAST VDD RISE

TIME

VDD

MCLR

Internal POR

DRT Time-out

Internal Reset

TDRT

DS41236E-page 50

© 2009 Microchip Technology Inc.

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