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ATMEGA32L-8PC Equivalent & Substitute Parts
Part Overview
The ATMEGA32L-8PC is an 8-bit AVR microcontroller from Microchip Technology featuring 32KB FLASH memory, 2KB RAM, and 1KB EEPROM. This device integrates 32 I/O pins, multiple communication interfaces (I2C, SPI, UART/USART), and on-chip peripherals including PWM, watchdog timer, and brown-out detection. The part operates at 8MHz with a supply voltage range of 2.7V to 5.5V and is housed in a 40-pin DIP package.
The ATMEGA32L-8PC is classified as obsolete. Locating equivalent substitute parts is necessary for ongoing production support, design updates, and inventory management where original stock is unavailable or depleted.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 8MHz |
| 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 |
| Oscillator Type | Internal |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole |
| Package / Case | 40-DIP (0.600", 15.24mm) |
| Supplier Device Package | 40-PDIP |
Substitute Part Grouping Explanation
Substitution of the ATMEGA32L-8PC is determined by strict equivalence across the following critical parameters:
- Core Architecture: AVR processor family
- Memory Configuration: 32KB FLASH, 2KB RAM, 1KB EEPROM
- I/O Count: 32 pins
- Clock Speed: 8MHz operation
- Peripheral Set: I2C, SPI, UART/USART, PWM, WDT, brown-out detection
- Package Type: 40-pin DIP form factor
- Supply Voltage Range: 2.7V to 5.5V compatibility
The ATMEGA32L-8PU meets all these criteria and is classified as a direct substitute. Both parts share identical core functionality, memory architecture, and peripheral integration. The primary difference is packaging variant (PDIP vs. DIP designation) and product status (obsolete vs. active).
Parameter Comparison
| Parameter | ATMEGA32L-8PC | ATMEGA32L-8PU |
|---|---|---|
| Manufacturer | Microchip Technology | Atmel |
| Core Processor | AVR | AVR |
| Core Size | 8-Bit | 8-Bit |
| Speed | 8MHz | 8MHz |
| 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 | 2.7V ~ 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 |
| Oscillator Type | Internal | Internal |
| Operating Temperature | 0°C ~ 70°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) |
| Supplier Device Package | 40-PDIP | 40-PDIP |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
The ATMEGA32L-8PU is a direct functional equivalent to the ATMEGA32L-8PC. Both devices are pin-compatible and functionally identical across all specified electrical and mechanical parameters. The ATMEGA32L-8PU is the preferred selection for new designs and ongoing production due to its active product status and extended availability.
The operating temperature range differs between the two parts: the ATMEGA32L-8PC operates from 0°C to 70°C, while the ATMEGA32L-8PU operates from -40°C to 85°C. Applications requiring operation below 0°C or above 70°C must use the ATMEGA32L-8PU. For applications within the 0°C to 70°C range, both parts are electrically and mechanically interchangeable.
Both parts carry identical ECCN (EAR99) and HTSUS (8542.31.0001) classifications, ensuring consistent export and tariff treatment.
Frequently Asked Questions (FAQ)
Q: Can the ATMEGA32L-8PU directly replace the ATMEGA32L-8PC in existing designs?
A: Yes. The ATMEGA32L-8PU is pin-compatible and functionally equivalent. No circuit modifications are required for substitution within the overlapping operating temperature range (0°C to 70°C).
Q: What is the primary difference between these two parts?
A: The ATMEGA32L-8PC is classified as obsolete, while the ATMEGA32L-8PU is active. The ATMEGA32L-8PU also offers an extended operating temperature range (-40°C to 85°C) compared to the ATMEGA32L-8PC (0°C to 70°C).
Q: Are there any package differences between ATMEGA32L-8PC and ATMEGA32L-8PU?
A: Both parts use the same 40-pin DIP package with identical pin spacing (0.600", 15.24mm). They are mechanically interchangeable.
Q: What memory configuration do these microcontrollers provide?
A: Both parts feature 32KB FLASH program memory, 2KB SRAM, and 1KB EEPROM. Memory capacity is identical between the two devices.
Q: Which communication interfaces are supported?
A: Both the ATMEGA32L-8PC and ATMEGA32L-8PU support I2C, SPI, and UART/USART interfaces. All communication protocols are functionally identical.
Q: What is the supply voltage requirement?
A: Both parts operate with a supply voltage range of 2.7V to 5.5V. No voltage regulation differences exist between the two devices.
Q: Are there any compliance or certification differences?
A: Both parts share identical ECCN (EAR99) and HTSUS (8542.31.0001) classifications. RoHS and REACH status information is consistent across both devices.
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