PIC16F716 datasheet(63/126 Pages) MICROCHIP

Part #	PIC16F716

Description	8-bit Flash-based Microcontroller with A/D Converter and Enhanced Capture/Compare/PWM

PDF	126 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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63 / 126 page

 2003 Microchip Technology Inc.

Preliminary

DS41206A-page 61

PIC16F716

FIGURE 9-7:

EXTERNAL BROWN-OUT

PROTECTION CIRCUIT 1

FIGURE 9-8:

EXTERNAL BROWN-OUT

PROTECTION CIRCUIT 2

FIGURE 9-9:

EXTERNAL BROWN-OUT

PROTECTION CIRCUIT 3

Note

This circuit will activate Reset when VDD goes

below (Vz + 0.7V) where Vz = Zener voltage.

2: Internal Brown-out Reset circuitry should be

disabled when using this circuit.

VDD

33k

10k

40k

VDD

MCLR

PIC16F716

Note

This brown-out circuit is less expensive, albeit

less accurate. Transistor Q1 turns off when VDD

is below a certain level such that:

2: Internal Brown-out Reset should be disabled

when using this circuit.

3: Resistors should be adjusted for the

characteristics of the transistor.

VDD x

R1 + R2

= 0.7 V

VDD

40k

VDD

MCLR

PIC16F716

Note

This brown-out protection circuit employs

Microchip Technology’s MCP809

microcontroller supervisor. The MCP8XX and

MCP1XX families of supervisors provide

push-pull and open collector outputs with

both high and low active Reset pins. There

are 7 different trip point selections to

accommodate 5V and 3V systems.

MCLR

PIC16F716

VDD

Vss

RST

MCP809

VDD

bypass

capacitor

PIC16F716 Datasheet(PDF) 63 Page - Microchip Technology

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