AT89LP216-20PU Equivalent & Substitute Parts

Part Overview

The AT89LP216-20PU is an 8051-based 8-bit microcontroller manufactured by Microchip Technology, featuring 2KB of FLASH program memory and operating at 20MHz. This device is classified as Active product status and is RoHS3 compliant. Substitute parts are necessary when specific packaging requirements, memory capacity needs, or I/O pin count specifications differ from the original design, while maintaining core processor compatibility and electrical performance within the 89LP series.

Substiute Parts

AT89LP216-20PU

Microchip TechnologyIn Stock: 2840AT89LP216-20PU Datasheet

Current PartRFQ

AT89LP216-20SU

AtmelIn Stock: 6093AT89LP216-20SU Datasheet

MFR RecommendedRFQ

AT89LP4052-20PU

Microchip TechnologyIn Stock: 1000436AT89LP4052-20PU Datasheet

MFR RecommendedRFQ

AT89LP828-20PU

AtmelIn Stock: 3161AT89LP828-20PU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution within the AT89LP216-20PU family is determined by the following critical parameters:

Core Compatibility Parameters: All substitute parts maintain the 8051 core processor, 8-bit architecture, 20MHz operating speed, 2.4V to 5.5V supply voltage range, and -40°C to 85°C operating temperature. These parameters are non-negotiable for functional equivalence.

Differentiating Parameters: Substitutes vary in three dimensions:

• Program Memory Capacity: 2KB (original), 4KB (AT89LP4052-20PU), or 8KB (AT89LP828-20PU)
• Package Type: 16-DIP (original and AT89LP4052-20PU), 16-SOIC (AT89LP216-20SU), or 28-DIP (AT89LP828-20PU)
• I/O Pin Count: 14 pins (2KB variants), 15 pins (4KB variant), or 30 pins (8KB variant)
• RAM Size: 128 x 8 (2KB), 256 x 8 (4KB), or 768 x 8 (8KB)

Substitution is valid only when the application requirements accommodate these differences. Package type substitution (DIP to SOIC) requires PCB redesign. Memory capacity upgrades are backward-compatible; downgrades are not.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain Active product status, ensuring continued availability and manufacturer support. Selection criteria are based on compliance certifications and provided specifications:

AT89LP216-20SU: Select this substitute when surface-mount packaging is required and program memory, RAM, and I/O pin count requirements match the original 2KB/128-byte/14-pin configuration. This part is functionally identical to the AT89LP216-20PU except for mounting technology (SOIC vs. DIP), requiring PCB redesign.

AT89LP4052-20PU: Select this substitute when increased program memory (4KB) and RAM (256 bytes) are required while maintaining through-hole DIP packaging. The 20-pin package accommodates one additional I/O pin (15 total). This part is suitable for applications requiring expanded code space within the same form factor family.

AT89LP828-20PU: Select this substitute when maximum memory capacity is required within the 89LP series. This part provides 8KB program memory, 768 bytes RAM, 1KB EEPROM, and 30 I/O pins in a 28-pin DIP package. The larger package footprint requires PCB redesign but offers the most comprehensive feature set.

All parts are RoHS3 compliant or unaffected by REACH regulations, maintaining environmental compliance standards.

Frequently Asked Questions (FAQ)

Q: Can AT89LP216-20SU replace AT89LP216-20PU directly on the PCB?

A: No. While both parts are electrically and functionally identical, the AT89LP216-20SU uses 16-SOIC surface-mount packaging versus the 16-DIP through-hole package of the AT89LP216-20PU. PCB redesign is required to accommodate the different footprint and soldering method.

Q: Is the AT89LP4052-20PU backward-compatible with AT89LP216-20PU firmware?

A: Yes. The AT89LP4052-20PU contains all program memory of the AT89LP216-20PU plus additional capacity (4KB vs. 2KB). Existing firmware will execute identically. The additional I/O pin (15 vs. 14) and larger package (20-DIP vs. 16-DIP) require PCB redesign but do not affect code compatibility.

Q: What are the key differences between AT89LP216-20PU and AT89LP828-20PU?

A: The AT89LP828-20PU provides significantly expanded resources: 8KB program memory (vs. 2KB), 768 bytes RAM (vs. 128 bytes), 1KB EEPROM (not present in AT89LP216-20PU), and 30 I/O pins (vs. 14). It uses a 28-DIP package requiring complete PCB redesign. Core processor speed, voltage range, and operating temperature remain identical.

Q: Are all substitute parts from the same manufacturer?

A: No. AT89LP216-20PU and AT89LP4052-20PU are manufactured by Microchip Technology. AT89LP216-20SU and AT89LP828-20PU are manufactured by Atmel. All parts are from the same 89LP product family and maintain identical core processor architecture and electrical specifications.

Q: Can I use a lower-memory part as a substitute if my application requires less code space?

A: No. Downgrading to a lower-memory variant is not supported. The AT89LP216-20PU is the minimum memory configuration in this substitution group. If memory reduction is necessary, alternative microcontroller families must be evaluated.

Q: What is the impact of EEPROM availability in AT89LP828-20PU?

A: The AT89LP828-20PU includes 1KB of EEPROM for non-volatile data storage, while AT89LP216-20PU does not. Applications requiring persistent data storage benefit from this feature. Firmware must be modified to utilize EEPROM functionality; existing code without EEPROM operations remains unaffected.