ATMEGA8-16MI Equivalent & Substitute Parts

Part Overview

The ATMEGA8-16MI is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 8KB of FLASH program memory, 1KB of RAM, and 512 bytes of EEPROM. This device operates at 16MHz with a supply voltage range of 4.5V to 5.5V and includes integrated peripherals such as I2C, SPI, UART/USART connectivity, PWM, watchdog timer, and brown-out detection. The part is currently classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

ATMEGA8-16MI

Microchip TechnologyIn Stock: 844ATMEGA8-16MI Datasheet

Current PartRFQ

ATMEGA8-16MU

Microchip TechnologyIn Stock: 6382ATMEGA8-16MU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATMEGA8-16MI is determined by strict equivalence across the following critical parameters: core processor architecture (AVR), core size (8-Bit), operating frequency (16MHz), program memory capacity (8KB FLASH), RAM capacity (1KB), EEPROM capacity (512 bytes), supply voltage range (4.5V ~ 5.5V), I/O count (23 pins), peripheral feature set (I2C, SPI, UART/USART, PWM, WDT, brown-out detection), data converter specifications (8-channel 10-bit A/D), operating temperature range (-40°C ~ 85°C), and physical package format (32-VFQFN with exposed pad).

The ATMEGA8-16MU meets all these criteria and is therefore a direct functional equivalent. The primary distinction between these parts is packaging configuration and product lifecycle status.

Parameter Comparison

Engineering Selection Recommendations

The ATMEGA8-16MU is the direct functional substitute for the ATMEGA8-16MI. Both devices are electrically and mechanically identical across all specified parameters. The ATMEGA8-16MU is preferred for new designs and production applications due to its active product status and ROHS3 compliance. The ATMEGA8-16MI, classified as obsolete, should be replaced in ongoing production schedules.

The ATMEGA8-16MU carries a higher moisture sensitivity level (MSL 3, 168 hours) compared to the ATMEGA8-16MI (MSL 1, unlimited), requiring adherence to moisture control protocols during storage and handling. Both parts are supplied in 32-VFQFN packages with exposed pads and maintain identical electrical performance characteristics.

Frequently Asked Questions (FAQ)

Q: Are ATMEGA8-16MI and ATMEGA8-16MU pin-compatible? A: Yes. Both devices use the 32-VFQFN package with identical pinout, electrical characteristics, and functional specifications. Direct substitution is possible without circuit modification.

Q: What is the primary difference between these parts? A: The ATMEGA8-16MU is the active production equivalent of the obsolete ATMEGA8-16MI. The substitute part offers ROHS3 compliance and is recommended for all new designs. Moisture sensitivity differs: ATMEGA8-16MI has unlimited shelf life (MSL 1), while ATMEGA8-16MU requires controlled storage conditions (MSL 3, 168 hours).

Q: Can I use ATMEGA8-16MU in existing designs originally specified for ATMEGA8-16MI? A: Yes. The electrical and mechanical specifications are identical. Moisture handling procedures must be observed during component storage and assembly.

Q: What does the packaging designation indicate? A: Both parts are supplied in 32-VFQFN (Very Fine Pitch Quad Flat No-Lead) packages with 5x5mm dimensions and exposed thermal pads. The ATMEGA8-16MI is supplied in tube packaging, while ATMEGA8-16MU is supplied in tray packaging.

Q: Are there any compliance differences? A: The ATMEGA8-16MU is ROHS3 compliant, making it suitable for applications subject to RoHS regulations. The ATMEGA8-16MI is RoHS non-compliant and should not be used in new designs targeting regulated markets.