ATMEGA644P-20AQR vs ATMEGA644-20AU Comparison
Detailed side-by-side comparison of ATMEGA644P-20AQR 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
ATMEGA644P-20AQR - 8-bit AVR MCU 64KB 20MHz TQFP-44 | Microchip
ATMEGA644P-20AQR β ActiveMicrochip Technology
ATMEGA644-20AU - 8-Bit AVR MCU 64KB Flash 20MHz | Microchip
ATMEGA644-20AU NrndSpecification Comparison
| Parameter | ATMEGA644P-20AQR | ATMEGA644-20AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Nrnd |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $5.95 | $4.96 |
| Core Architecture | AVR 8-bit RISC | 8-bit AVR RISC |
| Core Size | 8-Bit | β |
| Maximum Clock Frequency | 20 MHz | 20 MHz |
| Program Memory Size | 64 KB (32K x 16) Flash | β |
| Program Memory Type | In-System Programmable Flash | β |
| RAM Size | 4 KB (4K x 8) SRAM | β |
| EEPROM Size | 2 KB | β |
| Number of I/O | 32 | β |
| Package / Case | 44-TQFP (10 x 10 mm) | β |
| Mounting Type | Surface Mount | Surface Mount |
| Oscillator Type | Internal | β |
| Peripherals | Dual USART, 10-bit ADC, JTAG, picoPower features | β |
| Instructions | 131 powerful instructions, most single-clock cycle | β |
| Supply Voltage | 5 V (industrial per Mouser listing); [DATA_NEEDED: exact VCC min/max range] | β |
| Operating Temperature | [DATA_NEEDED: temperature range - Mouser lists IND (industrial)] | β |
| Packaging | Tape & Reel (TR) | β |
| Programming Interface | ICSP (SPI) and JTAG | β |
| RoHS Status | [DATA_NEEDED: RoHS compliance status] | Compliant |
| Program Memory | β | 64 KB In-System Programmable Flash (32K x 16) |
| SRAM | β | 4 KB |
| EEPROM | β | 2 KB |
| 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) |
| Package | β | 44-TQFP (10x10 mm) |
| Operating Temperature Range | β | -40C to +85C |
| 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) |