ATMEGA48PA-AU
| Parameters | |
|---|---|
| Series | AVR® ATmega |
| Package / Case | 32-TQFP |
| Mfr | Atmel |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Supplier Device Package | 32-TQFP (7x7) |
| Speed | 20MHz |
| Oscillator Type | Internal |
| Core Processor | AVR |
| RAM Size | 512 x 8 |
| Number of I/O | 23 |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Voltage - Supply (Vcc/Vdd) | 1.8V ~ 5.5V |
| EEPROM Size | 256 x 8 |
| Program Memory Type | FLASH |
| Connectivity | I²C, SPI, UART/USART |
| Core Size | 8-Bit |
| Program Memory Size | 4KB (2K x 16) |
| Data Converters | A/D 8x10b |
| Package | Bulk |
| Product Status | Active |
| Base Product Number | ATMEGA48 |
| Standard Package | 1 |
| HTSUS | 0000.00.0000 |
ATMEGA48PA-AU 8-Bit AVR Microcontroller IC 20MHz 4KB FLASH 32-TQFP
The ATMEGA48PA-AU is a high-performance, low-power 8-bit AVR microcontroller manufactured by Microchip Technology (formerly Atmel), belonging to the AVR ATmega series. Housed in a 32-pin TQFP surface-mount package (7.00×7.00mm, 1.20mm height), it operates reliably over an industrial temperature range of -40°C to +85°C, supporting a wide supply voltage range of 1.8V to 5.5V for flexible integration in various power systems. Equipped with a 20MHz maximum clock speed delivering up to 20 MIPS throughput, it features 4KB (2K×16) of in-system self-programmable Flash memory, 512 bytes of SRAM, and 256 bytes of EEPROM, with 10,000 Flash write/erase cycles and 100,000 EEPROM cycles for long-term reliability, and is RoHS-compliant with MSL 3 (168 hours) moisture sensitivity rating.
This MCU integrates a rich set of peripherals and power-saving features for versatile embedded applications. It adopts an advanced AVR RISC architecture with 131 single-clock-cycle instructions, 32×8 general-purpose working registers, and a 2-cycle multiplier for efficient processing. Peripherals include 23 programmable I/O pins, two 8-bit and one 16-bit timers/counters with compare modes, an 8-channel 10-bit ADC with configurable reference voltage, and communication interfaces (I²C, SPI, UART/USART) for seamless connectivity. It also features power-saving Pico Power® technology, multiple sleep modes (down to 0.1μA in power-down mode), power-on reset (POR), watchdog timer (WDT), and under-voltage lockout, along with ISP and IAP capabilities for convenient firmware updates without chip removal.
Alternative Microcontroller Models
● ATMEGA48PA-PU: Microchip's through-hole DIP variant with identical electrical performance, ideal for prototyping and low-volume assembly
● ATMEGA88PA-AU: Pin-compatible upgrade with 8KB Flash, 1KB SRAM, and 512 bytes EEPROM for memory-intensive designs
● ATMEGA48A-AU: Legacy variant from Microchip, similar specs with minor performance optimizations for backward compatibility
● PIC16F887-I/PT: Microchip's 8-bit PIC MCU with comparable I/O and memory, suitable for cross-family substitution
● STM8S103F3P6: STMicro's 8-bit MCU with low power consumption and similar peripherals, cost-effective alternative for consumer and industrial applications
