Macronix

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.

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

Series Reference

Serial NOR Flash

Parallel NOR Flash

NAND Flash

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.

Package Codes

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.

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.

Example MPNs with Full Decoding

MX25L6433FMI-08G

MX25L12835FMI-10G

MX29GL256FHT2I-90Q

MX30LF1G18AC

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

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