Macronix International Manufacturer Skill

Overview

Macronix International Co., Ltd. is a Taiwan-based manufacturer specializing in Flash memory ICs. The company produces:

• Serial NOR Flash (MX25L, MX25U, MX25R, MX25V, MX66L series)
• Parallel NOR Flash (MX29GL, MX29LV series)
• SLC NAND Flash (MX30LF series)
• ROM ICs

Macronix is known for high-reliability Flash memory used in embedded systems, IoT devices, automotive, and industrial applications.

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MPN Structure

Macronix MPNs follow this general structure:

Serial NOR Flash (MX25L/U/R/V, MX66L)

MX25 L 6433 F MI - 08 G
│    │ │    │ │    │  │
│    │ │    │ │    │  └── Grade: G=Green/RoHS
│    │ │    │ │    └───── Speed: 08=80MHz, 10=104MHz
│    │ │    │ └────────── Package code (see table below)
│    │ │    └──────────── Feature: F=Fast Read, E=Extended Temp
│    │ └───────────────── Density code (see density decoding)
│    └─────────────────── Series: L=Standard, U=Ultra Low Power, R=Wide Voltage, V=Very Low Voltage
└──────────────────────── Family prefix

Parallel NOR Flash (MX29GL, MX29LV)

MX29 GL 256 F HT 2 I - 90 Q
│    │  │   │ │  │ │   │  │
│    │  │   │ │  │ │   │  └── Qualifier
│    │  │   │ │  │ │   └───── Speed: 90=90ns
│    │  │   │ │  │ └───────── Temperature: I=Industrial
│    │  │   │ │  └─────────── Version: 2=Version 2
│    │  │   │ └────────────── Package: HT=TSOP-48
│    │  │   └──────────────── Feature: F=Fast
│    │  └──────────────────── Density: 256=256Mbit
│    └─────────────────────── Series: GL=High Density, LV=Low Voltage
└──────────────────────────── Family prefix

SLC NAND Flash (MX30LF)

MX30 LF 1G 18 AC
│    │  │  │  │
│    │  │  │  └── Package: AC=TSOP-48
│    │  │  └───── Bus width: 18=x8
│    │  └──────── Density: 1G=1Gbit, 2G=2Gbit
│    └─────────── Series: LF=SLC NAND Flash
└──────────────── Family prefix

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Series Reference

Serial NOR Flash

Parallel NOR Flash

NAND Flash

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Density Decoding

Serial NOR Flash Density Codes

Macronix serial flash uses a special encoding where the first 2-4 digits represent density:

Parallel NOR Flash Density Codes

Important: MX29LV series uses scaled encoding (multiply by 0.1 for Mbits), while MX29GL uses direct encoding.

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Package Codes

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Supported Component Types

The MacronixHandler supports:

ComponentType.MEMORY
ComponentType.MEMORY_FLASH

Note: Unlike some handlers, MacronixHandler does not define manufacturer-specific types like MEMORY_FLASH_MACRONIX. Both patterns register to MEMORY and MEMORY_FLASH base types.

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Handler Implementation Notes

Package Code Extraction

The handler extracts package codes differently based on the flash family:

Serial NOR (MX25L/U/R/V, MX66L):

1. Find position of 'F' or 'E' (feature letter)
2. Extract 2 characters after the feature letter
3. Map to package name if known, otherwise return empty

// Example: MX25L6433FMI-08G
// F is at index 10, MI is at 11-12
// Returns "SOP-8"

Parallel NOR (MX29GL, MX29LV):

1. Use regex pattern to find 2-letter code after density
2. Map to package name

// Example: MX29GL256FHT2I-90Q
// HT follows density and F
// Returns "TSOP-48"

NAND (MX30LF):

1. Extract last 2 characters before hyphen
2. Map to package or return raw suffix

// Example: MX30LF1G18AC
// AC is the suffix
// Returns "TSOP-48"

Series Extraction

Returns the family prefix including the series letter:

Density Extraction

The extractDensity() method (Macronix-specific helper) returns the decoded density:

Replacement Logic

isOfficialReplacement() returns true when:

1. Both parts are in the same series (e.g., both MX25L)
2. Both parts have the same density

Package and speed differences are acceptable for replacements.

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Example MPNs with Full Decoding

MX25L6433FMI-08G

MX25L12835FMI-10G

MX29GL256FHT2I-90Q

MX30LF1G18AC

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Related Files

• Handler: manufacturers/MacronixHandler.java
• Memory skill: .claude/skills/memory/SKILL.md
• Winbond handler (similar memory manufacturer): manufacturers/WinbondHandler.java
• Component types: MEMORY, MEMORY_FLASH

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Learnings & Edge Cases

Density Code Complexity

• Serial NOR uses complex density encoding (6433 = 64Mb, not 6.4Gb)
• Parallel NOR LV series uses scaled encoding (640 = 64Mb, 160 = 16Mb)
• NAND uses explicit Gbit notation (1G, 2G)

Package Code Position Varies

• Serial NOR: Package comes after feature letter (F or E)
• Parallel NOR: Package is part of the middle segment
• NAND: Package is the last 2 characters before hyphen

No Manufacturer-Specific Types

• Unlike TI (OPAMP_TI) or Winbond (MEMORY_FLASH_WINBOND), Macronix does not have manufacturer-specific ComponentTypes
• All patterns map to base MEMORY and MEMORY_FLASH types
• This simplifies matching but loses manufacturer specificity

Speed Grades

• Serial NOR: -08 = 80MHz, -10 = 104MHz, -12 = 120MHz
• Parallel NOR: -55 = 55ns, -70 = 70ns, -90 = 90ns

Voltage Series Selection Guide

• MX25L: Standard applications, 2.7V-3.6V
• MX25U: Battery-powered, ultra-low power
• MX25R: Designs needing voltage flexibility
• MX25V: Legacy 3.3V systems needing lower threshold
• MX66L: High-performance, large storage needs

Cross-Manufacturer Equivalents

• MX25L series competes with Winbond W25Q series
• MX30LF NAND competes with Micron MT29F series
• Serial NOR from different manufacturers often pin-compatible

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