Overview
The ATmega64A is a low-power CMOS 8-bit microcontroller from Microchip Technology, based on the AVR enhanced RISC architecture. It executes powerful instructions in a single clock cycle, achieving throughputs close to 1 MIPS per MHz. This allows system designers to optimize power consumption versus processing speed. The ATmega64A is an upgrade to the ATmega64 and is recommended for new designs due to its enhanced features and compatibility.
Key Specifications
| Specification | Value |
|---|---|
| Program Memory Size | 64 Kbytes (In-System Self-programmable Flash) |
| RAM | 4 Kbytes (Internal SRAM) |
| Data EEPROM | 2 Kbytes |
| Pin Count | 64 |
| Operation Voltage Range | 2.7V to 5.5V |
| Speed Grades | 0 - 16 MHz |
| Package Type | 64-lead TQFP, 64-pad QFN/MLF |
| Temperature Range | -40°C to 85°C (Industrial), -40°C to 105°C (Extended) |
| ADC Resolution | 10-bit, 8-channel with optional differential input stage |
| Timer/Counters | Two 8-bit, Two 16-bit with separate prescalers and compare modes |
| USARTs | Dual Programmable Serial USARTs |
| JTAG Interface | IEEE std. 1149.1 compliant with boundary-scan capabilities |
Key Features
- Advanced RISC Architecture with 130 powerful instructions, most executed in a single clock cycle.
- High endurance non-volatile memory segments: 64 Kbytes Flash, 2 Kbytes EEPROM, 4 Kbytes SRAM.
- In-System Programming by on-chip Boot Program with True Read-While-Write Operation.
- SPI Interface for In-System Programming and JTAG Interface for debugging and programming.
- Peripheral features include two 8-bit Timer/Counters, two 16-bit Timer/Counters, Real Time Counter, and 8-channel 10-bit ADC.
- Dual Programmable Serial USARTs and Master/Slave SPI Serial Interface.
- Programmable Watchdog Timer with on-chip oscillator and six software selectable power saving modes.
- Support for Atmel QTouch library for capacitive touch buttons, sliders, and wheels.
Applications
The ATmega64A is versatile and can be used in a variety of applications, including:
- Embedded systems requiring low power consumption and high processing efficiency.
- Industrial automation and control systems.
- Consumer electronics such as remote controls, appliances, and gaming devices.
- Automotive systems, including dashboard controls and sensor interfaces.
- Medical devices requiring precise timing and low power operation.
- Robotic and mechatronic systems.
Q & A
- What is the ATmega64A microcontroller based on?
The ATmega64A is based on the AVR enhanced RISC architecture. - What is the maximum program memory size of the ATmega64A?
The maximum program memory size is 64 Kbytes of In-System Self-programmable Flash. - What is the operating voltage range of the ATmega64A?
The operating voltage range is 2.7V to 5.5V. - How many USARTs does the ATmega64A have?
The ATmega64A has dual programmable serial USARTs. - What types of timer/counters are available on the ATmega64A?
The ATmega64A has two 8-bit Timer/Counters and two 16-bit Timer/Counters with separate prescalers and compare modes. - Does the ATmega64A support JTAG interface?
Yes, the ATmega64A supports an IEEE std. 1149.1 compliant JTAG interface with boundary-scan capabilities. - What is the resolution of the ADC on the ATmega64A?
The ADC has a resolution of 10 bits and includes 8 channels with optional differential input stages. - How many power saving modes does the ATmega64A have?
The ATmega64A has six software selectable power saving modes. - Is the ATmega64A compatible with the ATmega103?
Yes, the ATmega64A has an ATmega103 compatibility mode selected by a fuse. - What is the maximum temperature range for the ATmega64A?
The maximum temperature range is -40°C to 105°C (Extended).
