ATMEGA163L-4PI Equivalent & Substitute Parts

Part Overview

The ATMEGA163L-4PI 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 4MHz with a supply voltage range of 2.7V to 5.5V and is housed in a 40-pin DIP package. The product is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations where legacy compatibility is required.

Substiute Parts

ATMEGA163L-4PI

Microchip TechnologyIn Stock: 974ATMEGA163L-4PI Datasheet

Current PartRFQ

ATMEGA16L-8PU

Microchip TechnologyIn Stock: 6526ATMEGA16L-8PU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATMEGA163L-4PI is determined by the following critical parameters:

• Core Architecture: AVR 8-bit processor compatibility
• Memory Configuration: 16KB FLASH, 1KB RAM, 512 bytes EEPROM
• Package Form Factor: 40-pin DIP with 0.600" (15.24mm) pitch
• I/O Count: 32 I/O pins
• Voltage Supply Range: 2.7V ~ 5.5V
• Connectivity Interfaces: I2C, SPI, UART/USART
• Peripheral Set: Brown-out Detect/Reset, POR, PWM, WDT
• Data Conversion: 8-channel 10-bit A/D converter

The ATMEGA16L-8PU qualifies as a substitute based on matching all critical parameters. The primary difference is the operating speed: the substitute operates at 8MHz versus the original 4MHz. This higher speed capability is backward compatible for applications requiring the original 4MHz specification, as the device can operate at reduced clock frequencies.

Parameter Comparison

Engineering Selection Recommendations

The ATMEGA16L-8PU serves as a direct functional substitute for the ATMEGA163L-4PI in applications requiring AVR 8-bit microcontroller functionality with 16KB FLASH memory and 40-pin DIP packaging. Both devices are classified as obsolete products.

A significant compliance distinction exists: the ATMEGA16L-8PU achieves ROHS3 compliance, whereas the ATMEGA163L-4PI is RoHS non-compliant. For new designs or systems subject to RoHS regulatory requirements, the ATMEGA16L-8PU is the appropriate selection.

The 8MHz maximum speed of the substitute exceeds the 4MHz specification of the original part. Applications designed for 4MHz operation will function correctly with the ATMEGA16L-8PU, as the device supports operation at lower clock frequencies through internal oscillator configuration or external clock source selection.

Both devices maintain identical pin counts, I/O configuration, memory architecture, voltage supply range, and peripheral feature sets, ensuring direct compatibility at the functional and electrical levels.

Frequently Asked Questions (FAQ)

Q: Can the ATMEGA16L-8PU directly replace the ATMEGA163L-4PI in existing PCB designs?

A: Yes. Both devices use identical 40-pin DIP packaging with 0.600" pitch. Pin assignments, electrical characteristics, and functional capabilities are compatible. No PCB modifications are required.

Q: What is the primary difference between these two parts?

A: The ATMEGA16L-8PU operates at a maximum speed of 8MHz, while the ATMEGA163L-4PI operates at 4MHz. The substitute part has higher speed capability but can operate at the original 4MHz specification through clock configuration.

Q: Are there memory differences between the two microcontrollers?

A: No. Both devices feature identical memory configurations: 16KB FLASH program memory, 1KB RAM, and 512 bytes EEPROM.

Q: Does the ATMEGA16L-8PU support the same interfaces and peripherals?

A: Yes. Both parts include I2C, SPI, and UART/USART connectivity, along with identical peripheral features: Brown-out Detect/Reset, Power-On Reset, PWM, and Watchdog Timer. Both include 8-channel 10-bit analog-to-digital converters.

Q: What is the significance of the RoHS compliance difference?

A: The ATMEGA16L-8PU is ROHS3 compliant, while the ATMEGA163L-4PI is RoHS non-compliant. For applications subject to RoHS regulations or customer requirements, the ATMEGA16L-8PU is the appropriate selection.

Q: Are both parts still in production?

A: No. Both the ATMEGA163L-4PI and ATMEGA16L-8PU are classified as obsolete products. Availability is limited to existing inventory from authorized distributors.

Q: Can I use the ATMEGA16L-8PU in a design originally specified for 4MHz operation?

A: Yes. The ATMEGA16L-8PU can be configured to operate at 4MHz or lower frequencies, making it suitable for applications with the original 4MHz specification.