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ATMEGA88PB-AU
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Product Detailed Parameters
- Description：IC MCU 8BIT 8KB FLASH 32TQFP
- Series：AVR® ATmega, Functional Safety (FuSa)
- Mfr：Microchip Technology
- Package：Tray
- Core Processor：AVR
- Core Size：8-Bit
- Speed：20MHz
- Connectivity：I2C, SPI, UART/USART
- Peripherals：Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O：27
- Program Memory Size：8KB (4K x 16)
- Program Memory Type：FLASH
- EEPROM Size：512 x 8
- RAM Size：1K x 8
- Voltage - Supply (Vcc/Vdd)：1.8V ~ 5.5V
- Data Converters：A/D 8x10b
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：32-TQFP (7x7)
- Package / Case：32-TQFP
- Grade：-
- Qualification：-
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Overview
The ATMEGA88PB-AU is an 8-bit AVR microcontroller featuring 8KB of in-system self-programmable Flash, 1KB SRAM, and 512 bytes EEPROM. It operates at speeds up to 20MHz with a supply voltage range of 1.8V to 5.5V. The device includes 27 programmable I/O lines, an 8-channel 10-bit ADC, three timer/counters, and communication interfaces including SPI, USART, and TWI (I2C). It utilizes a 32-lead TQFP package.
Feature Summary
- Advanced RISC architecture delivering up to 20 MIPS throughput at 20MHz
- Supports true read-while-write operation for boot code sections
- Integrated capacitive touch sensing capabilities via Microchip QTouch library
- Six PWM channels and multiple sleep modes for power optimization
Applications
- Industrial control systems requiring deterministic response
- Consumer electronics utilizing capacitive touch interfaces
- Battery-powered devices leveraging low-power sleep modes
- Sensor nodes using integrated ADC and analog comparator
Procurement Notes
Verify the specific speed grade suffix against the required operating frequency and voltage conditions. Confirm that the 32-TQFP package dimensions match the target PCB footprint. Ensure the component meets the necessary industrial temperature specifications if deployed in harsh environments.
Selection Notes
Select this model when 8KB program memory and 27 I/O lines are sufficient. Consider alternative variants within the PB family if higher flash capacity or different package types like VQFN are required. Evaluate the 20MHz maximum speed against system timing requirements.
Part Context
This component belongs to the ATmega48PB/88PB/168PB series, which introduces enhanced peripheral features compared to previous generations. The PB designation indicates improved interface capabilities and support for advanced functionalities such as capacitive touch sensing and asynchronous timer operations.
Replacement Considerations
ATMEGA88A-AU
FAQ
Does the ATMEGA88PB-AU support capacitive touch sensing?
Yes, the device supports Microchip QTouch library functions for capacitive buttons, sliders, wheels, and proximity sensing.
What is the maximum operating frequency?
The maximum operating frequency is 20MHz, dependent on the supply voltage.
