xmc

# 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 ```java // 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 ```java // 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 ```java // 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) <!-- Add new learnings above this line -->