Microchip Technology ATMEGA168PA-AU Microcontrollers
RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 20MHz, CMOS, PQFP32

Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
ATMEGA168PA-AU
Detailed Description
Advanced Microchip ATMEGA168PA-AU Microcontrollers for precision electronics.
Package
TQFP
Lifecycle Status
Active
RoHS State
RoHS Compliant
Datasheet
Quick Jump:
Technical Specifications
Microchip Technology ATMEGA168PA-AU Microcontrollers technical specifications.
General
Series
ATmega168PA
Interface
2-Wire, I2C, SPI, UART, USART
Memory Size
16 kB
RAM Size
1 kB
Data Bus Width
8 b
Maximum Clock Frequency
20 MHz
RoHS
Compliant
Number of Pins
32
Package / Case
32-TQFP
Mounting Type
Surface Mount
Alternate Parts Comparison (ATMEGA168PA-AU vs ATMEGA128A-MUR vs ATMEGA165PV-8MUR vs ATMEGA645V-8AU)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Series | ATmega168PA | AVR® ATmega | AVR® ATmega | AVR® ATmega |
| Package / Case | 32-TQFP | 64-VFQFN Exposed Pad | 64-VFQFN Exposed Pad | 64-TQFP |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supply Voltage | 1.8V ~ 5.5V | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 1.8V ~ 5.5V |
| Core Processor | AVR | AVR | AVR | AVR |
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit |
| RAM Size | 1 kB | 4K x 8 | 1K x 8 | 4K x 8 |
| RoHS | Compliant | Yes | Yes | Yes |
| Lifecycle Status | Production | Active | Active | Active |
| Connectivity | I²C, SPI, UART/USART | EBI/EMI, I²C, SPI, UART/USART | SPI, UART/USART, USI | SPI, UART/USART, USI |
| Data Converters | A/D 8x10b | A/D 8x10b | A/D 8x10b | A/D 8x10b |
| Action |
Cross Reference
Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .
Suggested replacements
NXP
IC MCU 8BIT 16KB FLASH 32LQFP
NXP
IC MCU 8BIT 32KB FLASH 44QFP
More Parts in Microcontrollers
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.