Request Quote
(Ships tomorrow)
ATMEGA32A-PN Equivalent & Substitute Parts
Part Overview
The ATMEGA32A-PN 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, internal oscillator, and communication interfaces including I2C, SPI, and UART/USART. The ATMEGA32A-PN is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and production requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | ATMEGA32A-PN |
| Manufacturer | Microchip Technology |
| 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 |
| Voltage Supply (Vcc/Vdd) | 2.7V ~ 5.5V |
| Data Converters | A/D 8x10b |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Operating Temperature | -40°C ~ 105°C (TA) |
| Mounting Type | Through Hole |
| Package / Case | 40-DIP (0.600", 15.24mm) |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution of the ATMEGA32A-PN is determined by the following critical parameters:
- Core Architecture: AVR processor family
- Memory Configuration: 32KB FLASH, 1KB EEPROM, 2KB RAM
- I/O Count: 32 pins minimum
- Package Type: 40-DIP form factor
- Connectivity Interfaces: I2C, SPI, UART/USART support
- Voltage Range: Supply voltage compatibility
- Operating Temperature Range: Thermal operating envelope
The ATMEGA324PA-PU qualifies as a manufacturer-recommended substitute based on matching core memory architecture, I/O pin count, package form factor, and peripheral feature set. Variations in maximum operating frequency and minimum supply voltage represent acceptable trade-offs within the AVR ATmega product family.
Parameter Comparison
| Parameter | ATMEGA32A-PN | ATMEGA324PA-PU |
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology |
| Core Processor | AVR | AVR |
| Core Size | 8-Bit | 8-Bit |
| Speed | 16MHz | 20MHz |
| Program Memory Size | 32KB (16K x 16) | 32KB (16K x 16) |
| Program Memory Type | FLASH | FLASH |
| EEPROM Size | 1K x 8 | 1K x 8 |
| RAM Size | 2K x 8 | 2K x 8 |
| Number of I/O | 32 | 32 |
| Voltage Supply (Vcc/Vdd) | 2.7V ~ 5.5V | 1.8V ~ 5.5V |
| Data Converters | A/D 8x10b | A/D 8x10b |
| Connectivity | I2C, SPI, UART/USART | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT |
| Operating Temperature | -40°C ~ 105°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | 40-DIP (0.600", 15.24mm) | 40-DIP (0.600", 15.24mm) |
| Product Status | Obsolete | Obsolete |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
The ATMEGA324PA-PU serves as the manufacturer-recommended substitute for the ATMEGA32A-PN. Both devices maintain ROHS3 compliance and identical mechanical packaging, enabling direct socket replacement in 40-DIP applications.
The ATMEGA324PA-PU provides enhanced performance with 20MHz maximum operating frequency compared to the ATMEGA32A-PN's 16MHz specification. The substitute device extends minimum supply voltage support to 1.8V, broadening low-power application compatibility. The ATMEGA324PA-PU operates within a reduced maximum temperature range of -40°C to 85°C, compared to the original part's -40°C to 105°C envelope.
Both devices are classified as obsolete. Selection between these parts should be based on specific application requirements regarding operating frequency, supply voltage floor, and thermal operating conditions.
Frequently Asked Questions (FAQ)
Q: Can the ATMEGA324PA-PU directly replace the ATMEGA32A-PN in existing designs?
A: Yes. Both devices share identical 40-DIP package geometry, 32KB FLASH memory, 2KB RAM, 1KB EEPROM, 32 I/O pins, and peripheral feature sets including I2C, SPI, and UART/USART interfaces. Pin-for-pin compatibility is maintained.
Q: What are the key differences between these devices?
A: The ATMEGA324PA-PU operates at a maximum frequency of 20MHz versus the ATMEGA32A-PN's 16MHz. The substitute supports minimum supply voltage of 1.8V compared to 2.7V for the original part. The ATMEGA324PA-PU maximum operating temperature is 85°C versus 105°C for the ATMEGA32A-PN.
Q: Are there compliance or certification differences?
A: Both devices maintain ROHS3 compliance and identical REACH and ECCN classifications. No compliance barriers exist for substitution.
Q: What applications benefit from the ATMEGA324PA-PU's extended frequency capability?
A: Applications requiring higher processing speed or faster communication protocol execution can leverage the 20MHz capability of the ATMEGA324PA-PU. Designs operating at or below 16MHz remain fully compatible with both devices.
Q: Does the reduced maximum operating temperature of the ATMEGA324PA-PU limit its use?
A: The ATMEGA324PA-PU's -40°C to 85°C range covers standard industrial and commercial temperature specifications. Applications requiring operation above 85°C must retain the ATMEGA32A-PN or identify alternative solutions.
Q: Are both devices currently available for procurement?
A: Both devices are classified as obsolete. Availability through authorized distributors should be confirmed prior to design commitment or production planning.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts