Nuvoton M052LAN Microcontroller - Equivalent & Substitute Parts

Part Overview

The Nuvoton M052LAN is a 32-bit ARM Cortex-M0 microcontroller from the NuMicro M051 series, featuring 8KB FLASH memory, 4KB RAM, and integrated peripherals for embedded applications. The device operates at 50MHz with a supply voltage range of 2.5V to 5.5V and is housed in a 48-LQFP package.

The M052LAN is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support long-term product support and manufacturing requirements.

Key Parameters

Parameter	Value
Core Processor	ARM Cortex-M0
Core Size	32-Bit Single-Core
Speed	50MHz
Program Memory Size	8KB (8K 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
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the M052LAN is determined by strict equivalence across the following critical parameters:

Core Architecture: ARM Cortex-M0 processor
Memory Configuration: 8KB FLASH, 4KB RAM
Operating Frequency: 50MHz
Supply Voltage Range: 2.5V ~ 5.5V
Package Type: 48-LQFP form factor
I/O Count: 40 pins
Analog Capability: 8-channel 12-bit A/D converter
Operating Temperature Range: -40°C ~ 85°C

The M052LDN qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. Both devices share identical core specifications, memory capacity, clock speed, voltage requirements, and package configuration. The M052LDN is from the same NuMicro M051 series and maintains full pin and functional compatibility.

Parameter Comparison

Parameter	M052LAN (Main)	M052LDN (Substitute)
Manufacturer	Nuvoton Technology Corporation	Nuvoton Technology Corporation
Core Processor	ARM Cortex-M0	ARM Cortex-M0
Core Size	32-Bit Single-Core	32-Bit Single-Core
Speed	50MHz	50MHz
Program Memory Size	8KB (8K x 8)	8KB (8K x 8)
Program Memory Type	FLASH	FLASH
RAM Size	4K x 8	4K x 8
Voltage Supply (Vcc/Vdd)	2.5V ~ 5.5V	2.5V ~ 5.5V
Data Converters	A/D 8x12b	A/D 8x12b SAR
Number of I/O	40	40
Package / Case	48-LQFP	48-LQFP (7x7)
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	3A991A2	3A991A2
HTSUS	8542.31.0001	8542.31.0001

Engineering Selection Recommendations

The M052LDN is the qualified substitute for the obsolete M052LAN. Selection is based on the following factors:

Product Status: The M052LDN carries Active product status, ensuring ongoing manufacturer support, availability, and compliance maintenance. The M052LAN is obsolete and no longer supported by Nuvoton Technology Corporation.

Regulatory Compliance: Both devices maintain identical REACH and ECCN classifications (3A991A2 and 8542.31.0001 respectively), confirming equivalent export control and environmental compliance status.

Functional Equivalence: The M052LDN maintains complete electrical and mechanical compatibility with the M052LAN across all specified parameters, including core architecture, memory configuration, clock frequency, voltage range, I/O count, and package form factor.

For new designs or product refreshes, the M052LDN is the appropriate selection. For legacy system support or repair applications, the M052LDN provides direct substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can the M052LDN be used as a direct replacement for the M052LAN in existing designs?

A: Yes. The M052LDN is electrically and mechanically equivalent to the M052LAN. Both devices share identical core specifications, memory capacity, operating frequency, supply voltage range, I/O configuration, and 48-LQFP package form factor. No design changes are required for substitution.

Q: What is the difference between the M052LAN and M052LDN?

A: The primary difference is product status. The M052LAN is obsolete, while the M052LDN is active. The M052LDN includes EEPROM memory (4K x 8) and LINbus connectivity, which are not specified for the M052LAN. Both devices are functionally compatible for applications utilizing the core 8KB FLASH, 4KB RAM, and standard peripheral set.

Q: Are the package dimensions identical between M052LAN and M052LDN?

A: Both devices use the 48-LQFP package form factor. The M052LDN specifies the package as 48-LQFP (7x7), confirming standard LQFP dimensions. Pin assignment and PCB footprint compatibility is maintained.

Q: What is the inventory status for these parts?

A: The M052LAN has 5,487 pieces in stock. The M052LDN has 6,028 pieces in stock. Both are available as new original components.

Q: Are there any connectivity differences between these devices?

A: The M052LDN includes LINbus connectivity in addition to the standard EBI/EMI, I2C, IrDA, SPI, and UART/USART interfaces present on the M052LAN. This additional connectivity does not affect compatibility for applications not utilizing LINbus functionality.

Q: What compliance certifications apply to both devices?

A: Both the M052LAN and M052LDN are REACH Unaffected and carry identical ECCN (3A991A2) and HTSUS (8542.31.0001) classifications, confirming equivalent regulatory and export control status.

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