ATMEGA16-16PI Equivalent & Substitute Parts

Part Overview

The ATMEGA16-16PI is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 16KB of FLASH program memory, 1KB of RAM, and 512 bytes of EEPROM. This device operates at 16MHz with a 40-pin DIP package and supports multiple communication interfaces including I2C, SPI, and UART/USART. The ATMEGA16-16PI is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity.

Substiute Parts

ATMEGA16-16PI

Microchip TechnologyIn Stock: 2028ATMEGA16-16PI Datasheet

Current PartRFQ

ATMEGA16-16PU

AtmelIn Stock: 1510ATMEGA16-16PU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATMEGA16-16PI is determined by strict equivalence across the following critical parameters:

• Core Architecture: AVR processor family
• Memory Configuration: 16KB FLASH, 1KB RAM, 512 bytes EEPROM
• Operating Frequency: 16MHz
• Supply Voltage Range: 4.5V ~ 5.5V
• I/O Count: 32 pins
• Interface Protocols: I2C, SPI, UART/USART support
• Package Type: 40-pin DIP form factor
• Peripheral Set: Brown-out Detect/Reset, POR, PWM, WDT

The ATMEGA16-16PU qualifies as a direct substitute based on identical electrical specifications and package compatibility. The primary distinction between these parts is the packaging material designation (PI vs. PU), which does not affect functional performance or pin compatibility.

Parameter Comparison

Engineering Selection Recommendations

The ATMEGA16-16PU is the appropriate substitute for the obsolete ATMEGA16-16PI. Both parts share identical electrical characteristics, memory configuration, and pin assignments. The ATMEGA16-16PU maintains active product status, ensuring continued availability and supply chain support. Both parts carry equivalent export classifications (EAR99) and tariff codes (8542.31.0001), with no compliance barriers to substitution. The transition from ATMEGA16-16PI to ATMEGA16-16PU requires no circuit modifications or firmware changes.

Frequently Asked Questions (FAQ)

Q: Are ATMEGA16-16PI and ATMEGA16-16PU pin-compatible?

A: Yes. Both devices use the 40-pin DIP package with identical pin assignments and electrical specifications. Direct socket substitution is possible without circuit modification.

Q: What is the difference between the PI and PU package designations?

A: The PI and PU designations refer to packaging material specifications. Both are 40-pin DIP packages with equivalent electrical performance and mechanical dimensions (0.600", 15.24mm).

Q: Can I use ATMEGA16-16PU in a design originally specified for ATMEGA16-16PI?

A: Yes. The ATMEGA16-16PU is functionally equivalent across all electrical parameters, memory configuration, and interface protocols. No design changes are required.

Q: Why is the ATMEGA16-16PI classified as obsolete?

A: Product obsolescence is determined by manufacturer lifecycle decisions. The ATMEGA16-16PU remains in active production and serves as the current equivalent part.

Q: Are there any compliance or certification differences between these parts?

A: Both parts carry identical export classifications (EAR99) and tariff codes (8542.31.0001). No compliance barriers exist to substitution.

Q: What memory specifications must match for substitution?

A: Substitute parts must maintain 16KB FLASH program memory, 1KB RAM, and 512 bytes EEPROM. Deviations in any memory parameter disqualify a part from direct substitution.