ATMEGA1284P-AU vs ATMEGA644P-15AT Comparison
Detailed side-by-side comparison of ATMEGA1284P-AU by Microchip Technology and ATMEGA644P-15AT 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
ATMEGA1284P-AU - 8-bit AVR MCU 128KB Flash 20MHz TQFP-44
ATMEGA1284P-AU ✓ ActiveMicrochip Technology
ATMEGA644P-15AT - 8-bit AVR MCU 64KB Flash 16MHz TQFP-44 | Microchip
ATMEGA644P-15AT ObsoleteSpecification Comparison
| Parameter | ATMEGA1284P-AU | ATMEGA644P-15AT |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Obsolete |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.65 | $4.12 |
| Core Architecture | 8-bit AVR RISC | AVR 8-bit enhanced RISC |
| Program Memory (Flash) | 128 KB | 64 KB (32K x 16) |
| EEPROM | 4 KB | 2 KB |
| SRAM | 16 KB | 4 KB |
| Maximum CPU Speed | 20 MHz | — |
| Operating Voltage Range | 1.8 V to 5.5 V | — |
| I/O Pins | 32 | — |
| General-Purpose Registers | 32 | — |
| ADC | 10-bit, 8-channel | 8-channel, 10-bit, with differential mode |
| USART | 2 | 2 (dual USART, 'P' variant) |
| SPI | 1 | 1 master/slave |
| TWI (I2C) | 1 | 1 byte-oriented |
| Timer/Counters | 2x 8-bit, 2x 16-bit | 3 with PWM and compare modes |
| PWM Channels | 6 | — |
| Package | TQFP-44 (10x10 mm) | 44-pin TQFP (10x10 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) |
| In-System Programming | Yes (SPI) | — |
| JTAG Debug | Yes (IEEE 1149.1) | — |
| Power-Down Current | [DATA_NEEDED: power-down current in nA] | — |
| RoHS Status | Compliant | Compliant |
| MSL Level | 3 (per JEDEC J-STD-020) | — |
| Maximum Clock Frequency | — | 16 MHz (at 5V) |
| Throughput | — | Up to 1 MIPS per MHz (16 MIPS peak) |
| Operating Voltage (VCC) | — | 2.7 V to 5.5 V |
| General-Purpose I/O Lines | — | 32 |
| Watchdog Timer | — | Yes, programmable |
| AEC-Q100 Qualification | — | Grade 1 |
| In-System Programmable | — | Yes (Flash, Read-While-Write) |
| picoPower Technology | — | Yes |