ATMEGA32-16PC Equivalent & Substitute Parts

Part Overview

The ATMEGA32-16PC is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 32KB FLASH program memory, 2KB RAM, and 1KB EEPROM. This device integrates 32 I/O pins, multiple communication interfaces (I2C, SPI, UART/USART), and operates at 16MHz with an internal oscillator. The ATMEGA32-16PC is classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new designs requiring this functional specification.

Key Parameters

Parameter	Value
Core Processor	AVR
Core Size	8-Bit
Speed	16MHz
Program Memory Size	32KB (16K x 16)
Program Memory Type	FLASH
EEPROM Size	1K x 8
RAM Size	2K x 8
Number of I/O	32
Connectivity	I2C, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Data Converters	A/D 8x10b
Voltage Supply (Vcc/Vdd)	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Through Hole
Package / Case	40-DIP (0.600", 15.24mm)
Oscillator Type	Internal

Substitute Part Grouping Explanation

Substitution of the ATMEGA32-16PC is determined by strict equivalence across the following critical parameters:

Core Architecture: AVR processor family
Memory Configuration: 32KB FLASH, 2KB RAM, 1KB EEPROM
Clock Speed: 16MHz operation
I/O Count: 32 pins minimum
Interface Protocols: I2C, SPI, UART/USART support
Package Type: 40-DIP form factor with 0.600" (15.24mm) pitch
Mounting: Through-hole technology
Supply Voltage: 4.5V to 5.5V range

The ATMEGA32-16PU qualifies as a direct substitute based on identical core specifications, memory architecture, clock frequency, I/O configuration, and package dimensions. Differences in product status, operating temperature range, and compliance certifications do not affect functional interchangeability within the specified electrical and mechanical parameters.

Parameter Comparison

Parameter	ATMEGA32-16PC	ATMEGA32-16PU	Compatibility
Manufacturer	Microchip Technology	Microchip Technology	Identical
Core Processor	AVR	AVR	Identical
Core Size	8-Bit	8-Bit	Identical
Speed	16MHz	16MHz	Identical
Program Memory Size	32KB (16K x 16)	32KB (16K x 16)	Identical
Program Memory Type	FLASH	FLASH	Identical
EEPROM Size	1K x 8	1K x 8	Identical
RAM Size	2K x 8	2K x 8	Identical
Number of I/O	32	32	Identical
Connectivity	I2C, SPI, UART/USART	I2C, SPI, UART/USART	Identical
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT	Brown-out Detect/Reset, POR, PWM, WDT	Identical
Data Converters	A/D 8x10b	A/D 8x10b	Identical
Voltage Supply (Vcc/Vdd)	4.5V ~ 5.5V	4.5V ~ 5.5V	Identical
Mounting Type	Through Hole	Through Hole	Identical
Package / Case	40-DIP (0.600", 15.24mm)	40-DIP (0.600", 15.24mm)	Identical
Oscillator Type	Internal	Internal	Identical
Product Status	Obsolete	Active	Different
Operating Temperature	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)	Different
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Different

Engineering Selection Recommendations

The ATMEGA32-16PU is a direct functional equivalent to the ATMEGA32-16PC. Selection between these parts should be based on the following criteria:

ATMEGA32-16PC: Use only when legacy system maintenance requires exact part matching or when existing inventory must be consumed. Product status is obsolete; new procurement is not recommended.

ATMEGA32-16PU: Preferred for new designs and ongoing production. This part maintains active product status with Microchip Technology, ensuring continued availability and technical support. The ATMEGA32-16PU offers an extended operating temperature range (-40°C to 85°C) compared to the ATMEGA32-16PC (0°C to 70°C), providing greater thermal margin for industrial and extended-temperature applications. ROHS3 compliance of the ATMEGA32-16PU aligns with current environmental and regulatory standards.

Both parts are electrically and mechanically interchangeable within the specified parameter set. No design modifications are required when substituting between these devices.

Frequently Asked Questions (FAQ)

Q: Can ATMEGA32-16PU directly replace ATMEGA32-16PC in existing designs?

A: Yes. The ATMEGA32-16PU is a direct substitute. Both devices share identical core architecture, memory configuration, clock speed, I/O count, communication interfaces, and 40-DIP package dimensions. No PCB modifications or firmware changes are required.

Q: What is the difference between the 40-PDIP and 40-DIP package designations?

A: Both designations refer to the same physical package: a 40-pin dual-in-line package with 0.600" (15.24mm) pitch. PDIP (Plastic Dual In-line Package) and DIP (Dual In-line Package) are equivalent terms used interchangeably in component documentation.

Q: Why does the ATMEGA32-16PU have a wider operating temperature range?

A: The ATMEGA32-16PU (-40°C to 85°C) is qualified for a broader temperature envelope than the ATMEGA32-16PC (0°C to 70°C). This reflects different manufacturing test and qualification protocols. The extended range of the ATMEGA32-16PU provides additional thermal margin for applications requiring operation in harsh or variable temperature environments.

Q: Is the ATMEGA32-16PU suitable for new product designs?

A: Yes. The ATMEGA32-16PU carries active product status with Microchip Technology and is ROHS3 compliant, making it the appropriate choice for new designs. The ATMEGA32-16PC is obsolete and should not be specified for new development.

Q: Are there any firmware or software compatibility issues between these parts?

A: No. Both devices implement the identical AVR instruction set and peripheral architecture. Firmware compiled for the ATMEGA32-16PC will execute without modification on the ATMEGA32-16PU.

Q: What packaging options are available for these parts?

A: The ATMEGA32-16PC is supplied in standard packaging. The ATMEGA32-16PU is available in tube packaging. Both use the 40-DIP through-hole form factor. Packaging format does not affect electrical or mechanical compatibility.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message