N79E352APG Equivalent & Substitute Parts

Part Overview

The N79E352APG is an 8051-based 8-bit microcontroller manufactured by Nuvoton Technology Corporation, featuring 8KB of FLASH program memory and operating at 24MHz. This device is classified as "Not For New Designs," indicating it has reached end-of-life status. Finding equivalent or substitute parts is necessary for legacy system maintenance, production continuity, and long-term supply chain planning.

Substiute Parts

N79E352APG

Nuvoton Technology CorporationIn Stock: 710N79E352APG Datasheet

Current PartRFQ

N78E055APG

Nuvoton Technology CorporationIn Stock: 1142N78E055APG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the N79E352APG is determined by the following critical parameters:

• Core Architecture: 8051-based processor (mandatory for code compatibility)
• Package Type: 44-LCC (J-Lead) surface mount (mandatory for PCB compatibility)
• Voltage Supply Range: 2.4V ~ 5.5V (mandatory for power supply compatibility)
• Operating Temperature Range: -40°C ~ 85°C (mandatory for environmental compatibility)
• Number of I/O Pins: 36 (mandatory for pinout compatibility)
• Program Memory Type: FLASH (mandatory for firmware storage)

The N78E055APG qualifies as a substitute part because it maintains compatibility across all mandatory parameters while offering enhanced specifications in speed and program memory capacity.

Parameter Comparison

Engineering Selection Recommendations

The N78E055APG is an active product substitute for the N79E352APG. Both devices maintain identical pinout compatibility (36 I/O pins in 44-LCC package), voltage supply range (2.4V ~ 5.5V), and operating temperature specifications (-40°C ~ 85°C). Both are ROHS3 compliant and use the same 8051 core architecture, ensuring firmware compatibility.

The N78E055APG offers performance enhancements with 40MHz operation (versus 24MHz) and doubled program memory (16KB versus 8KB). The substitute part has larger RAM capacity (1.25K x 8 versus 256 x 8) but does not include EEPROM. Applications requiring EEPROM functionality must evaluate this difference against project requirements.

Selection should be based on product availability, supply chain continuity, and application-specific memory and speed requirements.

Frequently Asked Questions (FAQ)

Q: Can the N78E055APG directly replace the N79E352APG on existing PCBs?

A: Yes. Both parts use identical 44-LCC (J-Lead) packaging with 36 I/O pins in the same pinout configuration. No PCB modifications are required for physical installation.

Q: Are firmware changes necessary when switching from N79E352APG to N78E055APG?

A: Both devices use the 8051 core architecture and maintain the same instruction set. Existing firmware compiled for the N79E352APG will execute on the N78E055APG. However, applications must account for the absence of EEPROM on the N78E055APG if the original design relied on this feature.

Q: What is the impact of the speed difference (24MHz versus 40MHz)?

A: The N78E055APG operates at 40MHz compared to the N79E352APG's 24MHz. This provides faster instruction execution and improved real-time performance. Existing firmware will function correctly at the higher speed; timing-critical applications may benefit from the increased performance margin.

Q: Are both parts compliant with the same regulatory standards?

A: Yes. Both the N79E352APG and N78E055APG are ROHS3 compliant and carry identical voltage supply and operating temperature specifications, ensuring equivalent regulatory and environmental compliance.

Q: What should be considered regarding memory differences?

A: The N78E055APG provides 16KB program memory and 1.25K RAM compared to the N79E352APG's 8KB program memory and 256 bytes RAM. Applications with larger code or data requirements benefit from the increased capacity. The N78E055APG lacks EEPROM; applications requiring non-volatile data storage must implement alternative solutions or remain on the original part.