Lib-electronic-components xmc

XMC (Wuhan Xinxin Semiconductor) MPN encoding patterns, suffix decoding, and handler guidance. Use when working with XMC SPI NOR Flash memory components or XMCHandler.

install

source · Clone the upstream repo

git clone https://github.com/Cantara/lib-electronic-components

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/Cantara/lib-electronic-components "$T" && mkdir -p ~/.claude/skills && cp -r "$T/.claude/skills/manufacturers/xmc" ~/.claude/skills/cantara-lib-electronic-components-xmc && rm -rf "$T"

manifest: .claude/skills/manufacturers/xmc/SKILL.md

source content

XMC (Wuhan Xinxin Semiconductor) Manufacturer Skill

MPN Structure

XMC MPNs follow this general structure:

[PREFIX][DENSITY][PACKAGE]
   |       |        |
   |       |        +-- Package code (A, B, C, D)
   |       +-- Memory density (32, 64, 128, 256, 512)
   +-- Series prefix (XM25QH, XM25QU, XM25LU)

Example Decoding

XM25QH64A
|  |  |||
|  |  ||+-- A = SOIC-8 package
|  |  |+-- 64 = 64 Mbit density
|  |  +-- H = Standard 3.3V series
|  +-- 25Q = SPI Flash family
+-- XM = XMC prefix

XM25QU128B
|  |  | ||
|  |  | |+-- B = SOIC-16 package
|  |  | +-- 128 = 128 Mbit density
|  |  +-- U = 1.8V Low Voltage series
|  +-- 25Q = SPI Flash family
+-- XM = XMC prefix

XM25LU256C
|  |  | ||
|  |  | |+-- C = WSON-8 package
|  |  | +-- 256 = 256 Mbit density
|  |  +-- LU = Ultra Low Voltage series
|  +-- 25 = SPI Flash family
+-- XM = XMC prefix

Series Prefixes

Prefix	Voltage Range	Description
XM25QH	2.7V - 3.6V	Standard 3.3V SPI NOR Flash
XM25QU	1.65V - 2.0V	1.8V Low Voltage SPI NOR Flash
XM25LU	1.65V - 1.95V	Ultra Low Voltage SPI NOR Flash

Density Codes

Code	Density	Size
32	32 Mbit	4 MB
64	64 Mbit	8 MB
128	128 Mbit	16 MB
256	256 Mbit	32 MB
512	512 Mbit	64 MB

Package Codes

Code	Package	Pin Count	Body Size
A	SOIC-8	8	208mil
B	SOIC-16	16	300mil
C	WSON-8	8	6x5mm
D	USON-8	8	2x3mm

Product Families

XM25QH Series - Standard 3.3V SPI NOR Flash

Part Number	Density	Voltage	Max Speed	Interface
XM25QH32A	32 Mbit	2.7V-3.6V	104MHz	SPI/Dual/Quad
XM25QH64A	64 Mbit	2.7V-3.6V	104MHz	SPI/Dual/Quad
XM25QH128A	128 Mbit	2.7V-3.6V	104MHz	SPI/Dual/Quad
XM25QH256B	256 Mbit	2.7V-3.6V	104MHz	SPI/Dual/Quad
XM25QH512	512 Mbit	2.7V-3.6V	104MHz	SPI/Dual/Quad

XM25QU Series - 1.8V Low Voltage SPI NOR Flash

Part Number	Density	Voltage	Max Speed	Interface
XM25QU64A	64 Mbit	1.65V-2.0V	104MHz	SPI/Dual/Quad
XM25QU128B	128 Mbit	1.65V-2.0V	104MHz	SPI/Dual/Quad
XM25QU256C	256 Mbit	1.65V-2.0V	104MHz	SPI/Dual/Quad

XM25LU Series - Ultra Low Voltage SPI NOR Flash

Part Number	Density	Voltage	Max Speed	Application
XM25LU128	128 Mbit	1.65V-1.95V	104MHz	Ultra-low power
XM25LU256	256 Mbit	1.65V-1.95V	104MHz	Ultra-low power

Handler Implementation Notes

Pattern Matching

// XM25QH series - Standard 3.3V
Pattern XM25QH_PATTERN = Pattern.compile("^XM25QH\\d+[A-Z]*.*", Pattern.CASE_INSENSITIVE);

// XM25QU series - 1.8V Low Voltage
Pattern XM25QU_PATTERN = Pattern.compile("^XM25QU\\d+[A-Z]*.*", Pattern.CASE_INSENSITIVE);

// XM25LU series - Ultra Low Voltage
Pattern XM25LU_PATTERN = Pattern.compile("^XM25LU\\d+[A-Z]*.*", Pattern.CASE_INSENSITIVE);

Package Code Extraction

// XMC format: XM25QHxxxY where Y is the package code
// Extract the letter after density digits
Matcher matcher = DENSITY_PATTERN.matcher(upperMpn);
if (matcher.find()) {
    int densityEnd = matcher.end();
    if (densityEnd < upperMpn.length()) {
        String pkgCode = upperMpn.substring(densityEnd, densityEnd + 1);
        // Map to package: A=SOIC-8, B=SOIC-16, C=WSON-8, D=USON-8
    }
}

Voltage Range Extraction

// Determine operating voltage based on series
switch (series) {
    case "XM25QH" -> "2.7V-3.6V";
    case "XM25QU" -> "1.65V-2.0V";
    case "XM25LU" -> "1.65V-1.95V";
}

Cross-References

XMC Flash is pin-compatible with other SPI NOR Flash manufacturers:

3.3V Standard Series (XM25QH)

XMC	Winbond	GigaDevice	Macronix
XM25QH64A	W25Q64JV	GD25Q64C	MX25L6433F
XM25QH128A	W25Q128JV	GD25Q128C	MX25L12835F
XM25QH256B	W25Q256JV	GD25Q256C	MX25L25645G

1.8V Low Voltage Series (XM25QU)

XMC	Winbond	GigaDevice	Macronix
XM25QU64A	W25Q64FW	GD25LQ64C	MX25U6435F
XM25QU128B	W25Q128FW	GD25LQ128C	MX25U12835F

Voltage Selection Guide

Application	Recommended Series	Voltage
Legacy 3.3V systems	XM25QH	2.7V-3.6V
Mobile/Battery powered	XM25QU	1.65V-2.0V
Ultra-low power IoT	XM25LU	1.65V-1.95V

Related Files

Handler:
```
manufacturers/XMCHandler.java
```
Component types:
```
MEMORY
```
,
```
MEMORY_FLASH
```
,
```
IC
```

Learnings & Edge Cases

Series order: Check XM25QH before XM25QU before XM25LU for proper matching
Package code position: Single letter immediately after density digits
Voltage compatibility: XM25QH (3.3V) and XM25QU (1.8V) are NOT voltage compatible
Pin compatibility: All series are pin-compatible with Winbond 25Q series
Density encoding: Direct numeric encoding (64=64Mbit, 128=128Mbit, etc.)
SOIC-16 for high density: Larger densities (256Mbit+) often use SOIC-16 (package code B)