PIC16F57T-I/SP 查看數據表（PDF） - Microchip Technology

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PIC16F57T-I/SP

Flash-Based, 8-Bit CMOS Microcontroller Series

Microchip Technology 

PIC16F5X

FIGURE 5-3:

TIME-OUT SEQUENCE ON POWER-UP (MCLR NOT TIED TO VDD)

VDD

MCLR

Internal POR

TDRT

DRT Time-out

Internal Reset

FIGURE 5-4:

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

VDD

MCLR

Internal POR

DRT Time-out

Internal Reset

TDRT

FIGURE 5-5:

VDD

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

V1

MCLR

Internal POR

TDRT

DRT Time-out

Internal Reset

Note :

When VDD rises slowly, the TDRT time-out expires long before VDD has reached its final value. In this example, the

chip will reset properly if, and only if, V1 ≥ VDD min.

DS41213D-page 26

© 2007 Microchip Technology Inc.

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