ATMEGA48-20MJ vs ATMEGA328P-MU Comparison
Detailed side-by-side comparison of ATMEGA48-20MJ by Microchip Technology and ATMEGA328P-MU 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
ATMEGA48-20MJ - 8-bit AVR MCU 20MHz 4KB Flash VQFN-32 | Microchip
ATMEGA48-20MJ ✓ Active
Specification Comparison
| Parameter | ATMEGA48-20MJ | ATMEGA328P-MU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | NRND |
| Core Architecture | 8-bit AVR RISC | AVR 8-bit RISC |
| Maximum Clock Frequency | 20 MHz | — |
| Peak Throughput | 20 MIPS at 20 MHz | — |
| Flash Program Memory | 4 KB (2K x 16) | 32 KB (16 K x 16) |
| SRAM | 512 bytes | 2 KB |
| EEPROM | 256 bytes | 1 KB |
| Instructions | 131 instructions, most single-cycle | — |
| ADC Resolution | 10-bit | — |
| ADC Channels | 8-channel | — |
| Supply Voltage Range | 1.8 V to 5.5 V | — |
| Operating Temperature | -40C to +85C (industrial) | -40 C to +85 C (industrial) |
| Package | 32-VQFN / MLF (5x5 mm), pad designation J | 32-pin VQFN (5x5 mm, exposed pad) |
| Timers | 2 x 8-bit, 1 x 16-bit | — |
| PWM Channels | 6 | — |
| Communication Interfaces | USART, SPI, 2-wire serial (I2C-compatible) | USART, SPI (master/slave), TWI (I2C-compatible) |
| On-Chip Debug | debugWIRE | — |
| Sleep Modes | Idle, ADC Noise Reduction, Power-save, Power-down, Standby | — |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | Compliant (green package) | Compliant |
| Maximum Clock Speed | — | 20 MHz |
| Instruction Throughput | — | 20 MIPS |
| Operating Voltage Range | — | 1.8 V to 5.5 V |
| General-Purpose I/O | — | 23 lines |
| ADC | — | 10-bit, 8 channels (6 + 2 dedicated QFN/VFP) |
| Timers/Counters | — | 2 x 8-bit, 1 x 16-bit |
| On-chip Oscillator | — | Internal 8 MHz calibrated, 128 kHz |
| Programming Interface | — | ISP, debugWIRE, TPI |