ATMEGA88PA-PU

Overview

The ATMEGA88PA-PU is an 8-bit AVR microcontroller featuring 8KB of in-system programmable Flash memory, 512 bytes of EEPROM, and 1KB of SRAM. It operates at a maximum clock frequency of 20MHz with a supply voltage range of 1.8V to 5.5V. The device includes eight 10-bit ADC channels, three timer/counter units, and communication interfaces such as SPI, USART, and TWI. It is housed in a 28-pin PDIP package and supports a wide operating temperature range from -40°C to +85°C.

Feature Summary

• Advanced RISC architecture delivering up to 20 MIPS throughput at 20MHz
• Non-volatile memory segments with high endurance for Flash and EEPROM
• Integrated analog-to-digital converter with multiple input channels
• Programmable watchdog timer and internal calibrated oscillator

Applications

• Industrial control systems requiring robust 8-bit processing
• Consumer electronics utilizing low-power AVR cores
• Embedded applications needing serial communication interfaces
• Sensor interfacing via integrated ADC capabilities

Procurement Notes

Verify the specific suffix 'PU' corresponds to the 28-pin PDIP package variant when sourcing. Confirm the component status, as some distributors list this part as Not Recommended for New Designs (NRND). Ensure compatibility with existing PCB footprints designed for through-hole mounting before procurement.

Selection Notes

Select this model for designs requiring through-hole assembly and moderate program storage. Compare against the AU variant if surface-mount technology is preferred. Consider the PA suffix benefits regarding power consumption improvements over standard A series devices. Verify that the 23 available I/O lines meet the interface requirements of the target application.

Part Context

This component belongs to the Microchip ATmega family of 8-bit microcontrollers based on the enhanced RISC architecture. It shares core specifications with the ATmega88A but offers optimized power characteristics. The family is widely used in embedded systems due to its balance of performance, memory capacity, and peripheral integration.

Replacement Considerations

ATMEGA88A-PU serves as a direct functional equivalent without the PA power optimizations. ATMEGA88PA-AU provides identical electrical specifications but utilizes a 32-TQFP surface-mount package instead of the through-hole DIP form factor.