M058LAN Equivalent & Substitute Parts

Part Overview

The M058LAN is an ARM Cortex-M0 NuMicro M051 microcontroller IC manufactured by Nuvoton Technology Corporation. This 32-bit single-core device operates at 50MHz with 32KB FLASH program memory and 4KB RAM, housed in a 48-LQFP surface mount package. The M058LAN is classified as obsolete, making identification of equivalent substitute parts essential for ongoing system support, design updates, and procurement continuity.

Key Parameters

Parameter	M058LAN Specification
Manufacturer	Nuvoton Technology Corporation
Core Processor	ARM Cortex-M0
Core Size	32-Bit Single-Core
Speed	50MHz
Program Memory Size	32KB (32K x 8)
Program Memory Type	FLASH
RAM Size	4K x 8
Voltage Supply (Vcc/Vdd)	2.5V ~ 5.5V
Data Converters	A/D 8x12b
Number of I/O	40
Package / Case	48-LQFP
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C (TA)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the M058LAN is determined by strict equivalence across the following critical parameters:

Core Architecture & Performance: Identical ARM Cortex-M0 processor, 32-bit single-core configuration, and 50MHz operating frequency ensure functional compatibility at the instruction set and execution level.

Memory Configuration: Matching 32KB FLASH program memory and 4KB RAM capacity preserve firmware compatibility and application memory footprint requirements.

Electrical Specifications: Identical supply voltage range (2.5V ~ 5.5V) and data converter specifications (A/D 8x12b) ensure direct electrical substitution without circuit redesign.

Physical Package: 48-LQFP surface mount package with identical pin count (40 I/O) and package dimensions enable direct PCB-level replacement.

Connectivity & Peripherals: Equivalent interface support (I2C, SPI, UART/USART, PWM, WDT) and peripheral functions maintain system integration compatibility.

The M058LDN qualifies as a direct substitute based on these parameters. The primary distinction is product status: M058LDN is active production, whereas M058LAN is obsolete.

Parameter Comparison

Parameter	M058LAN	M058LDN	Compatibility
Manufacturer	Nuvoton Technology Corporation	Nuvoton Technology Corporation	Identical
Core Processor	ARM Cortex-M0	ARM Cortex-M0	Identical
Core Size	32-Bit Single-Core	32-Bit Single-Core	Identical
Speed	50MHz	50MHz	Identical
Program Memory Size	32KB (32K x 8)	32KB (32K x 8)	Identical
Program Memory Type	FLASH	FLASH	Identical
RAM Size	4K x 8	4K x 8	Identical
Voltage Supply (Vcc/Vdd)	2.5V ~ 5.5V	2.5V ~ 5.5V	Identical
Data Converters	A/D 8x12b	A/D 8x12b SAR	Compatible
Number of I/O	40	40	Identical
Package / Case	48-LQFP	48-LQFP (7x7)	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	Identical
Product Status	Obsolete	Active	Substitute is active production
REACH Status	REACH Unaffected	REACH Unaffected	Identical
ECCN	3A991A2	3A991A2	Identical
HTSUS	8542.31.0001	8542.31.0001	Identical

Engineering Selection Recommendations

For Obsolete Part Replacement: The M058LDN is the direct substitute for M058LAN. Both devices share identical core architecture, memory configuration, electrical specifications, and package form factor. The M058LDN is currently in active production status, ensuring long-term availability and supply chain continuity.

Compliance & Regulatory: Both parts maintain identical REACH compliance status (REACH Unaffected) and export control classification (ECCN 3A991A2, HTSUS 8542.31.0001), eliminating regulatory substitution barriers.

Design Integration: No circuit modifications, firmware changes, or PCB layout adjustments are required when transitioning from M058LAN to M058LDN. Pin-to-pin compatibility and electrical characteristics are preserved across all operating conditions.

Frequently Asked Questions (FAQ)

Q: Can M058LDN directly replace M058LAN without PCB modifications?

A: Yes. The M058LDN is a direct pin-for-pin and functionally equivalent substitute. Both devices use the 48-LQFP package with identical pinout, electrical specifications, and operating parameters. No PCB redesign is necessary.

Q: What is the primary reason to substitute M058LAN with M058LDN?

A: M058LAN is classified as obsolete, creating procurement and long-term support challenges. M058LDN is in active production, providing reliable supply availability and manufacturer support.

Q: Are there differences in memory configuration between these parts?

A: No. Both parts feature 32KB FLASH program memory and 4KB RAM. Memory organization and capacity are identical.

Q: Do the connectivity interfaces differ between M058LAN and M058LDN?

A: Both parts support equivalent connectivity: I2C, SPI, UART/USART, and IrDA. M058LDN adds LINbus support, which does not affect compatibility with existing M058LAN designs.

Q: Are there peripheral function differences?

A: Both parts include PWM, WDT, Brown-out Detect/Reset, and POR functions. M058LDN specifies LVR (Low Voltage Reset) while M058LAN specifies LVD (Low Voltage Detect). Both provide equivalent low-voltage protection functionality.

Q: What is the operating temperature range for both parts?

A: Both M058LAN and M058LDN operate across -40°C to 85°C (TA), ensuring compatibility across industrial and commercial temperature specifications.

Q: Are firmware and software compatible between these parts?

A: Yes. Identical ARM Cortex-M0 core architecture, instruction set, and memory configuration ensure complete firmware compatibility. Existing M058LAN firmware executes without modification on M058LDN.

Q: What supply voltage range do these microcontrollers support?

A: Both parts operate across 2.5V to 5.5V supply voltage range, maintaining compatibility with standard 3.3V and 5V logic systems.

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