ATmega16HVB datasheet(43/273 Pages) ATMEL

No. de pieza	ATmega16HVB

Descripción Electrónicos	8-bit Microcontroller with 16K/32K Bytes In-System Programmable Flash

PDF	273 Pages

Scroll/Zoom	100%

Fabricante Electrónico	ATMEL [ATMEL Corporation]

Página de inicio	http://www.atmel.com

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43 / 273 page

8042A–AVR–07/09

ATmega16HVB/32HVB

Figure 11-1. Reset Logic

11.2.1

Power-on Reset and Charger Connect

The Voltage Regulator will not start up until the Charger Detect module has enabled it. Before

this happens the chip will be in Power-off mode and only the Charger Detect module is enabled.

In order for the Charger Detect module to enable the Voltage Regulator, the voltage at the BATT

pin must exceed the Power-On Threshold Voltage, V

POT. When the voltage at the BATT pin

exceeds V

POT, the Voltage Regulator starts up and the chip enters RESET mode. When the

Delay Counter times out, the chip will enter Active mode. See Figure 10-1 on page 36. For

details on Charger Detect, see ”Charger Detect” on page 129.

MCU Status

Reset Circuit

Delay Counters

TIMEOUT

DATA BUS

Clock

Generator

SPIKE

FILTER

Pull-up Resistor

Ultra Low Power

RC Oscillator

SUT[1:0]

Power-on

Reset

Circuit/

Charger

Detect

Watchdog

Timer

RESET

/dW

VFET

BATT

POR

VREG

COUNTER RESET

Brown-out

Detection

VREG

debugWIRE

ATmega16HVB Datasheet(PDF) 43 Page - ATMEL Corporation

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