ATMEGA3250A-AN データシートの表示（PDF） - Atmel Corporation

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ATMEGA3250A-AN

8-bit Atmel Microcontroller with 16/32/64KB In-System Programmable Flash

Atmel Corporation 

The Atmel ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P provides the following fea-

tures: 16K/32K/64K bytes of In-System Programmable Flash with Read-While-Write capabilities, 512/1K/2K bytes

EEPROM, 1K/2K/4K byte SRAM, 54/69 general purpose I/O lines, 32 general purpose working registers, a JTAG

interface for Boundary-scan, On-chip Debugging support and programming, three flexible Timer/Counters with

compare modes, internal and external interrupts, a serial programmable USART, Universal Serial Interface with

Start Condition Detector, an 8-channel, 10-bit ADC, a programmable Watchdog Timer with internal Oscillator, an

SPI serial port, and five software selectable power saving modes. The Idle mode stops the CPU while allowing the

SRAM, Timer/Counters, SPI port, and interrupt system to continue functioning. The Power-down mode saves the

register contents but freezes the Oscillator, disabling all other chip functions until the next interrupt or hardware

reset. In Power-save mode, the asynchronous timer continues to run, allowing the user to maintain a timer base

while the rest of the device is sleeping. The ADC Noise Reduction mode stops the CPU and all I/O modules except

asynchronous timer and ADC, to minimize switching noise during ADC conversions. In Standby mode, the

XTAL/resonator Oscillator is running while the rest of the device is sleeping. This allows very fast start-up com-

bined with low-power consumption.

Atmel offers the QTouch® library for embedding capacitive touch buttons, sliders and wheels functionality into AVR

microcontrollers. The patented charge-transfer signal acquisition offers robust sensing and includes fully

debounced reporting of touch keys and includes Adjacent Key Suppression® (AKS®) technology for unambiguous

detection of key events. The easy-to-use QTouch Suite toolchain allows you to explore, develop and debug your

own touch applications.

The device is manufactured using Atmel’s high density non-volatile memory technology. The On-chip ISP Flash

allows the program memory to be reprogrammed In-System through an SPI serial interface, by a conventional non-

volatile memory programmer, or by an On-chip Boot program running on the AVR core. The Boot program can use

any interface to download the application program in the Application Flash memory. Software in the Boot Flash

section will continue to run while the Application Flash section is updated, providing true Read-While-Write opera-

tion. By combining an 8-bit RISC CPU with In-System Self-Programmable Flash on a monolithic chip, the Atmel

devise is a powerful microcontroller that provides a highly flexible and cost effective solution to many embedded

control applications.

The ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P AVR is supported with a full

suite of program and system development tools including: C Compilers, Macro Assemblers, Program Debug-

ger/Simulators, In-Circuit Emulators, and Evaluation kits.

ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [SUMMARY]

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8285ES–AVR–02/2013

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