ATMEGA644-20AU vs ATMEGA644P-15AZ Comparison
Detailed side-by-side comparison of ATMEGA644-20AU by Microchip Technology and ATMEGA644P-15AZ 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 NrndMicrochip Technology
ATMEGA644P-15AZ - 8-bit AVR MCU 64KB 16MHz TQFP-44 | Microchip
ATMEGA644P-15AZ ObsoleteSpecification Comparison
| Parameter | ATMEGA644-20AU | ATMEGA644P-15AZ |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Nrnd | Obsolete |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.96 | $4.98 |
| Core Architecture | 8-bit AVR RISC | β |
| Program Memory | 64 KB In-System Programmable Flash (32K x 16) | β |
| SRAM | 4 KB | β |
| EEPROM | 2 KB | β |
| Maximum Clock Frequency | 20 MHz | β |
| Throughput | Up to 20 MIPS at 20 MHz | β |
| Operating Voltage Range | 2.7 V to 5.5 V | β |
| General Purpose I/O Pins | 32 | β |
| General Purpose Working Registers | 32 | β |
| ADC | 8-channel, 10-bit successive approximation | 10-bit, up to 8 channels |
| USART Interfaces | 2 | β |
| Timer/Counters | 2 x 8-bit, 1 x 16-bit with compare and PWM modes | β |
| Two-Wire Serial Interface | 1 (byte-oriented, I2C compatible) | β |
| SPI Interface | 1 (master/slave) | β |
| Package | 44-TQFP (10x10 mm) | β |
| Mounting Type | Surface Mount | β |
| Operating Temperature Range | -40C to +85C | β |
| Debug Interface | JTAG (IEEE 1149.1) with on-chip debug | JTAG (on-chip debug) |
| Sleep Modes | 6 (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby) | β |
| RoHS Status | Compliant | β |
| Core | β | AVR 8-bit |
| Core Size | β | 8-Bit |
| Speed | β | 16 MHz |
| Program Memory Size | β | 64 KB (32K x 16) Flash |
| RAM Size | β | 4 KB |
| EEPROM Size | β | 2 KB |
| Number of I/O | β | 32 |
| Package / Case | β | 44-TQFP (10x10 mm) |
| Operating Voltage | β | 4.5 V to 5.5 V (15 MHz speed grade) |
| Oscillator Type | β | Internal |
| Peripherals | β | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | β | I2C, SPI, 2x USART |
| Architecture Features | β | 131 instructions, most single-cycle, 1 MIPS/MHz |
| Technology | β | picoPower low-power CMOS |
| Packaging | β | Tape & Reel (TR) |
| Qualification | β | Verified during product qualification per AEC-Q100 grade 1 (per datasheet family notes) |
| Programmer Compatibility | β | AVR ISP / STK600 / XPRO toolchain |