ATMEGA644P-20MQR vs ATMEGA644-20AU Comparison
Detailed side-by-side comparison of ATMEGA644P-20MQR 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-20MQR | ATMEGA644-20AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Nrnd | Nrnd |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.30 | $4.96 |
| Core Processor | AVR 8-bit RISC | β |
| Core Size | 8-bit | β |
| Speed (Max Clock) | 20 MHz | β |
| Flash Program Memory | 64 KB (32K x 16) | β |
| SRAM | 4 KB (4K x 8) | 4 KB |
| EEPROM | 2 KB | 2 KB |
| Number of I/O | 32 | β |
| Supply Voltage (VCC) | 4.5 V to 5.5 V (at 20 MHz) | β |
| Oscillator Type | Internal | β |
| USART Count | 2 (P variant dual USART) | β |
| Timers | Two 8-bit, one 16-bit | β |
| ADC | 8-channel, 10-bit | 8-channel, 10-bit successive approximation |
| Communication Interfaces | USART x2, SPI, TWI (I2C) | β |
| Debug Interface | JTAG (on-chip debug, boundary scan) | JTAG (IEEE 1149.1) with on-chip debug |
| Instruction Set | 131 instructions, mostly single-cycle | β |
| Low Power Technology | picoPower | β |
| Operating Temperature | -40C to +105C (extended, M grade) | β |
| Package / Case | 44-VQFN (7x7 mm) exposed pad (MLF) | β |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging | Tape & Reel (TR) | β |
| RoHS / Green Status | GREEN, RoHS compliant | β |
| Core Architecture | β | 8-bit AVR RISC |
| Program Memory | β | 64 KB In-System Programmable Flash (32K x 16) |
| Maximum Clock Frequency | β | 20 MHz |
| 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 |
| 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) |
| Package | β | 44-TQFP (10x10 mm) |
| Operating Temperature Range | β | -40C to +85C |
| Sleep Modes | β | 6 (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby) |
| RoHS Status | β | Compliant |