AT89LP4052-16PU Equivalent & Substitute Parts

Part Overview

The AT89LP4052-16PU is an 8051-based 8-bit microcontroller manufactured by Microchip Technology, featuring 4KB of FLASH program memory, 256 bytes of RAM, and a 16MHz clock speed. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part is housed in a 20-PDIP package and operates across a wide supply voltage range of 2.4V to 5.5V, with integrated peripherals including SPI and UART/USART connectivity, brown-out detection, power-on reset, PWM, and watchdog timer functionality.

Substiute Parts

AT89LP4052-16PU

Microchip TechnologyIn Stock: 2402AT89LP4052-16PU Datasheet

Current PartRFQ

AT89LP4052-20PU

Microchip TechnologyIn Stock: 1000436AT89LP4052-20PU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AT89LP4052-16PU is determined by strict equivalence across the following critical parameters:

• Core processor architecture (8051)
• Core size (8-Bit)
• Program memory capacity (4KB FLASH)
• RAM capacity (256 x 8)
• Supply voltage range (2.4V ~ 5.5V)
• I/O count (15 pins)
• Connectivity interfaces (SPI, UART/USART)
• Peripheral feature set (Brown-out Detect/Reset, POR, PWM, WDT)
• Package type (20-DIP)
• Mounting method (Through Hole)

The AT89LP4052-20PU qualifies as a direct substitute based on these parameters. The primary difference is the maximum clock speed specification, which does not affect functional compatibility in applications designed for the 16MHz variant.

Parameter Comparison

Engineering Selection Recommendations

The AT89LP4052-20PU is the qualified substitute for the AT89LP4052-16PU. Both devices maintain identical electrical and mechanical specifications across all functional parameters. The AT89LP4052-20PU carries Active product status, ensuring continued availability and manufacturing support, whereas the AT89LP4052-16PU is classified as Obsolete. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent applications. The higher speed rating of the AT89LP4052-20PU (20MHz versus 16MHz) does not compromise compatibility in designs specified for the 16MHz variant, as the substitute operates within the same supply voltage range and maintains identical peripheral functionality.

Frequently Asked Questions (FAQ)

Q: Can the AT89LP4052-20PU directly replace the AT89LP4052-16PU in existing designs?

A: Yes. Both devices share identical core architecture, memory configuration, I/O count, peripheral feature set, and package specifications. The AT89LP4052-20PU operates at a higher maximum clock speed but maintains full backward compatibility.

Q: What is the primary reason for substitution?

A: The AT89LP4052-16PU is classified as Obsolete. The AT89LP4052-20PU is the manufacturer-recommended equivalent with Active product status, ensuring long-term availability and production support.

Q: Are there any electrical differences between these parts?

A: No. Both devices operate across the same supply voltage range (2.4V ~ 5.5V), support identical connectivity interfaces (SPI, UART/USART), and include the same peripheral features (Brown-out Detect/Reset, POR, PWM, WDT).

Q: Is the package identical?

A: Yes. Both parts use the 20-DIP (0.300", 7.62mm) package with Through Hole mounting, ensuring mechanical and electrical compatibility on existing PCB layouts.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the AT89LP4052-16PU and AT89LP4052-20PU are ROHS3 Compliant and REACH Unaffected, meeting equivalent regulatory requirements.

Q: What is the difference in clock speed, and does it affect compatibility?

A: The AT89LP4052-20PU operates at a maximum of 20MHz compared to 16MHz for the AT89LP4052-16PU. This higher speed rating does not affect compatibility in applications designed for the 16MHz variant, as the substitute can operate at or below the original specification.