Atmel AVR ATmega1281 Microcontroller 128KB Flash 8KB RAM 64-Pin TQFP

The Atmel AVR ATmega1281 Microcontroller is an 8-bit low-power CMOS microcontroller with 128KB of flash program memory, built on the AVR enhanced RISC architecture.

Overview

The microcontroller executes instructions in a single clock cycle and delivers throughput approaching 1 MIPS per MHz, allowing system power consumption to be balanced with processing speed. It is supplied in a 64-pin TQFP package and is suited to embedded designs that require integrated memory, a hardware multiplier and touch sensing.

Key Features

• Advanced RISC architecture with 32 x 8 general-purpose working registers and fully static operation
• Up to 16 MIPS throughput at 16 MHz, with an on-chip 2-cycle multiplier
• 128KB flash program memory, 8KB internal SRAM and 4KB high-endurance EEPROM for data storage
• Integrated QTouch library for capacitive touch buttons, sliders and wheels, with fully debounced touch key reporting
• Adjacent Key Suppression (AKS) technology for unambiguous key event detection in dense keypad layouts
• Optional boot code section with independent lock bits and a programming lock feature

Development Support

The microcontroller is supported by program and system development tools including C compilers, macro assemblers, debuggers, simulators, in-circuit emulators and evaluation kits. The QTouch Suite toolchain is available for exploring, developing and debugging touch interfaces.

Physical Specifications

Dimensions are 3.3 (width) x 1.5 (depth) x 4.3 (height), with a weight of 6.667 gm.

The Atmel AVR ATmega1281 Microcontroller is suited to capacitive touch interfaces and embedded AVR designs where flash, SRAM and EEPROM capacity, a hardware multiplier and secure boot options are required.