Features
- High-performance, Low-power Atmel®AVR®8-bit Microcontroller
- Advanced RISC Architecture
– 133 Powerful Instructions – Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers + Peripheral Control Registers
– Fully Static Operation
– Up to 16MIPS Throughput at 16MHz
– On-chip 2-cycle Multiplier - High Endurance Non-volatile Memory segments
– 128KBytes of In-System Self-programmable Flash program memory
– 4KBytes EEPROM
– 4KBytes Internal SRAM
– Write/Erase cycles: 10,000 Flash/100,000 EEPROM
– Data retention: 20 years at 85°C/100 years at 25°C(1)
– Optional Boot Code Section with Independent Lock Bits
In-System Programming by On-chip Boot Program
True Read-While-Write Operation
– Up to 64KBytes Optional External Memory Space
– Programming Lock for Software Security
– SPI Interface for In-System Programming - JTAG (IEEE std. 1149.1 Compliant) Interface
– Boundary-scan Capabilities According to the JTAG Standard
– Extensive On-chip Debug Support
– Programming of Flash, EEPROM, Fuses and Lock Bits through the JTAG Interface - Peripheral Features
– Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes
– Two Expanded 16-bit Timer/Counters with Separate Prescaler, Compare Mode and Capture Mode
– Real Time Counter with Separate Oscillator
– Two 8-bit PWM Channels
– 6 PWM Channels with Programmable Resolution from 2 to 16 Bits
– Output Compare Modulator
– 8-channel, 10-bit ADC
8 Single-ended Channels
7 Differential Channels
2 Differential Channels with Programmable Gain at 1x, 10x, or 200x
– Byte-oriented Two-wire Serial Interface
– Dual Programmable Serial USARTs
– Master/Slave SPI Serial Interface
– Programmable Watchdog Timer with On-chip Oscillator
– On-chip Analog Comparator - Special Microcontroller Features
– Power-on Reset and Programmable Brown-out Detection
– Internal Calibrated RC Oscillator
– External and Internal Interrupt Sources
– Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby
– Software Selectable Clock Frequency
– ATmega103 Compatibility Mode Selected by a Fuse
– Global Pull-up Disable - I/O and Packages
– 53 Programmable I/O Lines
– 64-lead TQFP and 64-pad QFN/MLF - Operating Voltages
– 2.7 – 5.5V - Speed Grades
– 0 – 16MHz
Specifications
| Product Attribute | Attribute Value |
| Manufacturer: | Microchip |
| Product Category: | 8-bit Microcontrollers – MCU |
| Series: | ATmega128A |
| Mounting Style: | SMD/SMT |
| Package/Case: | TQFP-64 |
| Core: | AVR |
| Program Memory Size: | 128 kB |
| Data Bus Width: | 8 bit |
| ADC Resolution: | 10 bit |
| Maximum Clock Frequency: | 16 MHz |
| Number of I/Os: | 53 I/O |
| Data RAM Size: | 4 kB |
| Supply Voltage – Min: | 2.7 V |
| Supply Voltage – Max: | 5.5 V |
| Minimum Operating Temperature: | – 40 C |
| Maximum Operating Temperature: | + 105 C |
| Packaging: | Tray |
| Data RAM Type: | SRAM |
| Data ROM Size: | 4 kB |
| Data ROM Type: | EEPROM |
| Height: | 1 mm |
| Interface Type: | JTAG |
| Length: | 14 mm |
| Moisture Sensitive: | Yes |
| Number of ADC Channels: | 8 Channel |
| Number of Timers/Counters: | 4 Timer |
| Processor Series: | megaAVR |
| Product: | MCU |
| Product Type: | 8-bit Microcontrollers – MCU |
| Program Memory Type: | Flash |
