ATMEL ATMEGA48-20AU 8-Bit Microcontroller, 4KB Flash, TQFP32, 20MHz

The ATMEL ATMEGA48-20AU is an advanced 8-bit low-power CMOS Microcontroller Unit (MCU) based on the AVR enhanced RISC architecture. Engineered for efficiency, it executes powerful instructions in a single clock cycle, achieving throughputs approaching 1 MIPS per MHz. This allows designers to perfectly balance power consumption against processing speed for optimal system performance.

At the heart of the MCU lies the AVR core, which combines a rich instruction set with 32 general-purpose working registers. All 32 registers are directly connected to the Arithmetic Logic Unit (ALU), enabling two independent registers to be accessed in a single one-clock-cycle instruction. This innovative architecture delivers superior code efficiency and can achieve throughputs up to ten times faster than conventional CISC microcontrollers.

Key Features & Benefits

• Advanced RISC Architecture: Features 131 powerful instructions and fully static operation for reliable, low-power performance.
• High Performance: Capable of up to 20 MIPS throughput at a 20MHz clock speed, supported by an on-chip 2-cycle multiplier.
• Robust Memory: Includes high-endurance non-volatile memory segments with an optional boot code section protected by independent lock bits.
• Flexible Programming: Supports in-system programming via the on-chip boot program with True Read-While-Write operation.
• Enhanced Security: Features a programming lock for robust software security.
• Reliable Operation: Integrated power-on reset and programmable brown-out detection ensure stable start-up and operation, alongside an internal calibrated oscillator.

This surface-mount device (SMD) comes in a compact TQFP32 package, making it suitable for space-constrained PCB designs. Its wide operating voltage range and industrial temperature tolerance make it a versatile choice for demanding embedded applications.