ATMEGA644P-15AZ vs ATMEGA644-20AU Comparison
Detailed side-by-side comparison of ATMEGA644P-15AZ 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-15AZ - 8-bit AVR MCU 64KB 16MHz TQFP-44 | Microchip
ATMEGA644P-15AZ ObsoleteMicrochip Technology
ATMEGA644-20AU - 8-Bit AVR MCU 64KB Flash 20MHz | Microchip
ATMEGA644-20AU NrndSpecification Comparison
| Parameter | ATMEGA644P-15AZ | ATMEGA644-20AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Obsolete | Nrnd |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.98 | $4.96 |
| Core | AVR 8-bit | β |
| Core Size | 8-Bit | β |
| Speed | 16 MHz | β |
| Program Memory Size | 64 KB (32K x 16) Flash | β |
| RAM Size | 4 KB | β |
| EEPROM Size | 2 KB | β |
| Number of I/O | 32 | β |
| Package / Case | 44-TQFP (10x10 mm) | β |
| Operating Voltage | 4.5 V to 5.5 V (15 MHz speed grade) | β |
| Oscillator Type | Internal | β |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | β |
| Connectivity | I2C, SPI, 2x USART | β |
| ADC | 10-bit, up to 8 channels | 8-channel, 10-bit successive approximation |
| Architecture Features | 131 instructions, most single-cycle, 1 MIPS/MHz | β |
| Technology | picoPower low-power CMOS | β |
| Debug Interface | JTAG (on-chip debug) | JTAG (IEEE 1149.1) with on-chip debug |
| Packaging | Tape & Reel (TR) | β |
| Qualification | Verified during product qualification per AEC-Q100 grade 1 (per datasheet family notes) | β |
| Programmer Compatibility | AVR ISP / STK600 / XPRO toolchain | β |
| Core Architecture | β | 8-bit AVR RISC |
| Program Memory | β | 64 KB In-System Programmable Flash (32K x 16) |
| SRAM | β | 4 KB |
| EEPROM | β | 2 KB |
| 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) |
| Mounting Type | β | Surface Mount |
| 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 |