esmt

# ESMT (Elite Semiconductor Memory Technology) Manufacturer Skill ## MPN Structure ESMT MPNs follow this general structure: ``` [PREFIX][DENSITY][CONFIG][VERSION]-[SPEED][PACKAGE] | | | | | | | | | | | +-- Package code (TG, BG, etc.) | | | | +-- Speed grade (6, 5, 2.5, 100, 70) | | | +-- Version letter (A, B, etc.) | | +-- Memory configuration (bus width, banks) | +-- Density in Mbit +-- Series prefix (M12L, M14D, F25L, F49L) ``` ### Example Decoding ``` M12L128168A-6TG | | | || || | | | || |+-- TG = TSOP-II package | | | || +-- 6 = 6ns speed grade | | | |+-- A = version/revision | | | +-- 8 = 8 banks | | +-- 16 = 16-bit data bus | +-- 128 = 128 Mbit density +-- M12L = SDRAM series F25L016A-100PAIG | | || | || | | || | |+-- IG = Industrial grade | | || | +-- PA = SOP package | | || +-- 100 = 100MHz speed | | |+-- A = version | | +-- 016 = 16 Mbit | +-- 25L = SPI Flash series +-- F = Flash prefix ``` --- ## Series Prefixes | Prefix | Memory Type | Description | |--------|-------------|-------------| | M12L | SDRAM | Synchronous DRAM | | M14D | DDR SDRAM | DDR1 SDRAM | | F25L | SPI Flash | Serial SPI NOR Flash | | F49L | Parallel Flash | Parallel NOR Flash | --- ## Density Codes ### SDRAM (M12L) and DDR (M14D) | Code | Density | Notes | |------|---------|-------| | 16 | 16 Mbit | | | 32 | 32 Mbit | | | 64 | 64 Mbit | | | 128 | 128 Mbit | | | 256 | 256 Mbit | DDR only | | 512 | 512 Mbit | DDR only | ### SPI Flash (F25L) | Code | Density | Notes | |------|---------|-------| | 004 | 4 Mbit | Leading zeros | | 008 | 8 Mbit | Leading zeros | | 016 | 16 Mbit | Leading zeros | | 032 | 32 Mbit | Leading zeros | | 064 | 64 Mbit | Leading zeros | | 128 | 128 Mbit | | ### Parallel Flash (F49L) | Code | Density | Notes | |------|---------|-------| | 160 | 16 Mbit | Scaled encoding (160 = 16Mb) | | 320 | 32 Mbit | Scaled encoding | | 640 | 64 Mbit | Scaled encoding | --- ## Package Codes | Code | Package | Description | |------|---------|-------------| | A | TSOP | Thin Small Outline Package | | B | BGA | Ball Grid Array | | TG | TSOP-II | TSOP Type II | | WG | WBGA | Window BGA | | BG | BGA | Ball Grid Array | | PA | SOP | Small Outline Package | | PAIG | SOP | SOP with Industrial Grade | | PG | SOP-8 | 8-pin SOP | --- ## Speed Grades ### SDRAM/DDR | Code | Speed | Access Time | |------|-------|-------------| | 5 | 200MHz | 5ns | | 6 | 166MHz | 6ns | | 7 | 143MHz | 7ns | | 2.5 | 400MHz | 2.5ns (DDR) | ### Flash | Code | Speed | Notes | |------|-------|-------| | 70 | 70ns | Parallel Flash | | 100 | 100MHz | SPI Flash | | 104 | 104MHz | High-speed SPI | --- ## Product Families ### M12L Series - SDRAM | Part Number | Density | Configuration | Speed | |-------------|---------|---------------|-------| | M12L128168A-6TG | 128 Mbit | 8M x 16 x 8 banks | 166MHz | | M12L64164A-5TG | 64 Mbit | 4M x 16 x 4 banks | 200MHz | | M12L32164A-6TG | 32 Mbit | 2M x 16 x 4 banks | 166MHz | ### M14D Series - DDR SDRAM | Part Number | Density | Configuration | Speed | |-------------|---------|---------------|-------| | M14D5121632A-2.5BG | 512 Mbit | 32M x 16 x 2 | 400MHz | | M14D2561616A-2.5BG | 256 Mbit | 16M x 16 x 1 | 400MHz | | M14D1281616A-2.5BG | 128 Mbit | 8M x 16 x 1 | 400MHz | ### F25L Series - SPI Flash | Part Number | Density | Interface | Speed | |-------------|---------|-----------|-------| | F25L004A-100PAIG | 4 Mbit | SPI | 100MHz | | F25L008A-100PAIG | 8 Mbit | SPI | 100MHz | | F25L016A-100PAIG | 16 Mbit | SPI | 100MHz | ### F49L Series - Parallel Flash | Part Number | Density | Interface | Speed | |-------------|---------|-----------|-------| | F49L160UA-70TG | 16 Mbit | Parallel | 70ns | | F49L320UA-70TG | 32 Mbit | Parallel | 70ns | --- ## Configuration Encoding (SDRAM/DDR) The configuration digits after the density encode: ``` M12L128168A ||| ||+-- Banks (4 or 8) |+-- Data bus width (16-bit = 16) +-- First digit varies ``` | Config Code | Meaning | |-------------|---------| | 168 | 16-bit bus, 8 banks | | 164 | 16-bit bus, 4 banks | | 1616 | 16-bit bus, 16Mbit config | --- ## Handler Implementation Notes ### Pattern Matching ```java // SDRAM - M12L series "^M12L\\d+.*" // DDR SDRAM - M14D series "^M14D\\d+.*" // SPI Flash - F25L series (also MEMORY_FLASH type) "^F25L\\d+.*" // Parallel Flash - F49L series (also MEMORY_FLASH type) "^F49L\\d+.*" ``` ### Package Code Extraction ```java // Handle hyphenated MPNs - get part after last hyphen int lastHyphen = upperMpn.lastIndexOf('-'); if (lastHyphen > 0) { String suffix = upperMpn.substring(lastHyphen + 1); // Strip leading speed grade digits/dots String pkgCode = suffix.replaceAll("^[0-9.]+", ""); // Check PACKAGE_CODES map } ``` ### Density Extraction Complexities ```java // SPI Flash uses leading zeros: 004, 008, 016 // Parallel Flash uses scaled encoding: 160=16Mbit // F25L004A -> "4" (strip leading zeros) // F49L160UA -> "16" (scale down by 10) ``` --- ## Cross-References ### SDRAM Equivalents | ESMT | Samsung | Micron | ISSI | |------|---------|--------|------| | M12L128168A | K4S641632N | MT48LC8M16 | IS42S16800 | | M12L64164A | K4S281632I | MT48LC4M16 | IS42S16400 | ### SPI Flash Equivalents | ESMT | Winbond | Macronix | SST | |------|---------|----------|-----| | F25L016A | W25Q16 | MX25L1606E | SST25VF016B | | F25L008A | W25Q80 | MX25L8006E | SST25VF080B | --- ## Related Files - Handler: `manufacturers/ESMTHandler.java` - Component types: `MEMORY`, `MEMORY_FLASH`, `IC` --- ## Learnings & Edge Cases - **Leading zeros in F25L**: SPI Flash density codes have leading zeros (004, 008, 016) - **Scaled encoding in F49L**: Parallel Flash uses 160=16Mbit, 320=32Mbit encoding - **Configuration encoding**: SDRAM part numbers encode bus width and bank count - **Speed grade in suffix**: Speed appears before package code after hyphen (e.g., -6TG = 6ns + TSOP-II) - **Industrial grade suffix**: PAIG = SOP package with Industrial Grade indicator - **Version letters**: A, B, C indicate silicon revisions, not always form/fit/function compatible <!-- Add new learnings above this line -->