ATMEGA644P-A15AZ vs ATMEGA644-20AU Comparison
Detailed side-by-side comparison of ATMEGA644P-A15AZ by Microchip Technology and ATMEGA644-20AU by Microchip Technology. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Microchip Technology
ATMEGA644-20AU - 8-Bit AVR MCU 64KB Flash 20MHz | Microchip
ATMEGA644-20AU NrndSpecification Comparison
| Parameter | ATMEGA644P-A15AZ | ATMEGA644-20AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Nrnd | Nrnd |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.85 | $4.96 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Flash Memory | 64 KB | β |
| SRAM | 4 KB | 4 KB |
| EEPROM | 2 KB | 2 KB |
| Maximum Clock Frequency | 16 MHz | 20 MHz |
| Supply Voltage Range | 4.5 V to 5.5 V | β |
| I/O Ports / Lines | 53 I/O | β |
| Data Bus Width | 8 bit | β |
| Program Memory Type | Flash | β |
| USARTs | 2 | β |
| Package | 44-TQFP | 44-TQFP (10x10 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Product Family | ATmega644P (AVR ATmega) | β |
| Lifecycle Stage | Active (mature product, NRND per Microchip; replaced by ATmega644PA) | β |
| Programming / Debug Interface | ICSP (In-Circuit Serial Programming), supports MPLAB SNAP debugging | β |
| RoHS Status | [DATA_NEEDED: RoHS compliance status] | Compliant |
| Operating Temperature Range | [DATA_NEEDED: operating temperature range] | -40C to +85C |
| Program Memory | β | 64 KB In-System Programmable Flash (32K x 16) |
| Throughput | β | Up to 20 MIPS at 20 MHz |
| Operating Voltage Range | β | 2.7 V to 5.5 V |
| General Purpose I/O Pins | β | 32 |
| General Purpose Working Registers | β | 32 |
| ADC | β | 8-channel, 10-bit successive approximation |
| USART Interfaces | β | 2 |
| Timer/Counters | β | 2 x 8-bit, 1 x 16-bit with compare and PWM modes |
| Two-Wire Serial Interface | β | 1 (byte-oriented, I2C compatible) |
| SPI Interface | β | 1 (master/slave) |
| Debug Interface | β | JTAG (IEEE 1149.1) with on-chip debug |
| Sleep Modes | β | 6 (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby) |