PCINT13 datasheet(54/294 Pages) ATMEL

Part #	PCINT13

Description	High Performance, Low Power Atmel AVR 8-bit Microcontroller Advanced RISC Architecture

PDF	294 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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54 / 294 page

9219A–RFID–01/11

Atmel ATA5505 [Preliminary]

Figure 6-1.

Reset Circuit

6.1.3

Power-on Reset

A Power-on Reset (POR) pulse is generated by an On-chip detection circuit. The detection

level is defined in Table 23-4 on page 258. The POR is activated whenever V

CC is below the

detection level. The POR circuit can be used to trigger the start-up Reset, as well as to detect

a failure in supply voltage.

A Power-on Reset (POR) circuit ensures that the device is reset from Power-on. Reaching the

Power-on Reset threshold voltage invokes the delay counter, which determines how long the

device is kept in RESET after V

CC rise. The RESET signal is activated again, without any

delay, when V

CC decreases below the detection level.

Figure 6-2.

MCU Start-up, RESET Tied to V

MCU Status

Brown-out

Reset Circuit

BODLEVEL [2..0]

Delay Counters

CKSEL[3:0]

TIMEOUT

DATA BUS

Clock

Generator

Spike

Filter

Pull-up Resistor

Watchdog

Oscillator

SUT[1:0]

Power-on Reset

Circuit

RSTDISBL

TIME-OUT

INTERNAL

RESET

tTOUT

VPOT

VPORMAX

VPORMIN

VCCRR

PCINT13 Datasheet(PDF) 54 Page - ATMEL Corporation

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