ATMEGA644-20PU vs ATMEGA32A-PU Comparison
Detailed side-by-side comparison of ATMEGA644-20PU by Microchip Technology and ATMEGA32A-PU 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
ATMEGA644-20PU - 8-bit AVR MCU 64KB 20MHz DIP-40 | Microchip
ATMEGA644-20PU β ActiveMicrochip Technology
ATMEGA32A-PU - 16MHz 8-bit AVR MCU, 32KB Flash, PDIP-40
ATMEGA32A-PU β ActiveSpecification Comparison
| Parameter | ATMEGA644-20PU | ATMEGA32A-PU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $7.40 | $3.85 |
| Core Architecture | 8-bit AVR enhanced RISC | β |
| Program Memory Size | 64 KB (32K x 16) Flash | β |
| Program Memory Type | ISP FLASH (read-while-write) | β |
| SRAM | 4 KB | 2 KB |
| EEPROM | 2 KB | 1 KB |
| Maximum Clock Frequency | 20 MHz | 16 MHz |
| Operating Voltage Range | 2.7 V to 5.5 V | β |
| General Purpose I/O | 32 I/O lines | β |
| USARTs | 2 | β |
| Timer/Counters | 3 (with compare modes and PWM) | β |
| Serial Interfaces | SPI, TWI (I2C compatible) | β |
| ADC Resolution | 10-bit | β |
| JTAG | Yes (IEEE 1149.1 boundary scan, on-chip debug) | β |
| Sleep Modes | 5 (including power-down, power-save) | β |
| Package | 40-PDIP (0.600 in, 15.24 mm) | 40-pin PDIP (PU) |
| Mounting Type | Through-Hole | Through-Hole |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) |
| RoHS Status | Compliant (Green) | Compliant |
| Architecture | β | AVR 8-bit RISC (modified Harvard) |
| Program Memory (Flash) | β | 32 KB (16K x 16) |
| Instruction Throughput | β | 16 MIPS at 16 MHz |
| Supply Voltage (Vcc) | β | 4.5 V to 5.5 V |
| I/O Pins | β | 32 programmable |
| ADC | β | 8-channel, 10-bit |
| Timers/Counters | β | Two 8-bit, one 16-bit |
| Communication Interfaces | β | USART, SPI, TWI (I2C) |
| Debug Interface | β | JTAG (IEEE 1149.1) |