ATmega48PA-AU Datasheet Summary

Overview

The ATmega48PA-AU is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. It features high performance and low power consumption, making it suitable for a wide range of embedded control applications.

Key Features

• High Performance: Achieves up to 20 MIPS throughput at 20MHz.
• Low Power: Optimized for low power consumption with various sleep modes.
• Memory:4KB In-System Self-Programmable Flash with Read-While-Write capabilities.256B EEPROM.512B Internal SRAM.
• Peripherals:Two 8-bit Timer/Counters with separate prescaler and compare mode.One 16-bit Timer/Counter with separate prescaler, compare mode, and capture mode.6-channel 10-bit ADC (8 channels in TQFP and VQFN packages).Programmable Serial USART.Master/Slave SPI Serial Interface.Byte-oriented 2-wire Serial Interface (Philips I2C compatible).Programmable Watchdog Timer with separate on-chip oscillator.On-chip Analog Comparator.
• Capacitive Touch Sensing: Supports up to 64 sense channels with QTouch® library.
• Operating Voltage: 1.8 - 5.5V.
• Temperature Range: -40°C to 85°C.
• Speed Grade: 0 - 4MHz @ 1.8 - 5.5V, 0 - 10MHz @ 2.7 - 5.5V, 0 - 20MHz @ 4.5 - 5.5V.
• Power Consumption:Active Mode: 0.2mA @ 1MHz, 1.8V, 25°C.Power-down Mode: 0.1µA.Power-save Mode: 0.75µA (including 32kHz RTC).

Pin Configuration

• Package: 28-pin SPDIP.
• I/O Lines: 23 programmable I/O lines.
• Power Pins: VCC, GND.
• Clock Pins: XTAL1, XTAL2.
• Reset Pin: RESET.
• ADC Pins: ADC0 to ADC7 (ADC6 and ADC7 available in TQFP and VQFN packages only).
• USART Pins: TXD, RXD.
• SPI Pins: MOSI, MISO, SCK, SS.
• TWI Pins: SCL, SDA.
• Timer/Counter Pins: OC0A, OC0B, OC1A, OC1B, OC2A, OC2B, ICP1, T0, T1.
• Interrupt Pins: INT0, INT1, PCINT0 to PCINT23.

Memory Map

• Program Memory: 4KB Flash.
• Data Memory: 512B SRAM.
• EEPROM: 256B.
• I/O Space: 64 I/O registers, 160 extended I/O registers.

Clock Options

• Internal Calibrated RC Oscillator: 8MHz.
• External Clock: Up to 20MHz.
• Low Power Crystal Oscillator: For low power applications.
• Full Swing Crystal Oscillator: For noisy environments.
• Low Frequency Crystal Oscillator: Optimized for 32.768kHz watch crystals.
• 128kHz Internal Oscillator: Low power oscillator.

Sleep Modes

• Idle Mode: CPU stopped, peripherals running.
• ADC Noise Reduction Mode: ADC and asynchronous timer running, other peripherals stopped.
• Power-down Mode: All clocks stopped, wake-up via external interrupt or reset.
• Power-save Mode: Asynchronous timer running, other peripherals stopped.
• Standby Mode: External oscillator running, wake-up time minimized.
• Extended Standby Mode: External oscillator running, wake-up time minimized, additional features enabled.

Interrupts

• Interrupt Vectors: 26 interrupt vectors for various sources including external interrupts, timer/counter interrupts, USART, SPI, and ADC.
• Interrupt Handling: Supports nested interrupts with priority levels.

Programming

• In-System Programming: Flash memory can be reprogrammed in-system via SPI interface.
• Boot Loader Support: Read-While-Write self-programming capability.
• Programming Lock: Software security features to protect application code.

Applications

The ATmega48PA-AU is suitable for applications requiring low power consumption, high performance, and a rich set of peripherals. It is ideal for consumer electronics, industrial control, automotive, and IoT devices.

Ordering Information

• Part Number: ATmega48PA-AU.
• Package: 28-pin SPDIP.
• Temperature Range: -40°C to 85°C.
• Operating Voltage: 1.8 - 5.5V.
• For detailed specifications and additional information, refer to the complete datasheet available from Microchip Technology Inc.