Description
The ATmega640/1280/1281/2560/2561 provides the following features: 64K/128K/256K bytes of In-System Programmable Flash with Read-While-Write capabilities, 4Kbytes EEPROM, 8Kbytes SRAM, 54/86 general purpose I/O lines, 32 general purpose working registers, Real Time Counter (RTC), six flexible Timer/Counters with compare modes and PWM, four USARTs, a byte oriented 2-wire Serial Interface, a 16-channel, 10-bit ADC with optional differential input stage with programmable gain, programmable Watchdog Timer with Internal Oscillator, an SPI serial port, IEEE® std. 1149.1 compliant JTAG test interface, also used for accessing the On-chip Debug system and programming and six 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 Crystal/Resonator Oscillator is running while the rest of the device is sleeping. This allows very fast start-up combined with low power consumption. In Extended Standby mode, both the main Oscillator and the Asynchronous Timer continue to run. Microchip offers the QTouch® library for embedding capacitive touch buttons, sliders and wheels functionality into AVR microcontrollers. The patented charge-transfer signal acquisition offersrobust 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.
Specifications: | |
Attribute | Value |
Category | Integrated Circuits (ICs) |
Embedded - Microcontrollers | |
Mfr | Microchip Technology |
Series | AVR® ATmega |
Package | Tray |
Part Status | Active |
Core Processor | AVR |
Core Size | 8-Bit |
Speed | 16MHz |
Connectivity | EBI/EMI, I²C, SPI, UART/USART |
Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
Number of I/O | 86 |
Program Memory Size | 128KB (64K x 16) |
Program Memory Type | FLASH |
EEPROM Size | 4K x 8 |
RAM Size | 8K x 8 |
Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V |
Data Converters | A/D 16x10b |
Oscillator Type | Internal |
Operating Temperature | -40°C ~ 85°C (TA) |
Mounting Type | Surface Mount |
Package / Case | 100-TQFP |
Supplier Device Package | 100-TQFP (14x14) |
Base Product Number | ATMEGA1280 |