holtek

# Holtek Semiconductor Manufacturer Skill ## MPN Structure Holtek has two main naming conventions: ### HT Series (MCUs, Audio, USB, LCD) ``` HT[FAMILY][TYPE][PRODUCT]-[PACKAGE] │ │ │ │ │ │ │ │ │ └── Package suffix (-1=SOP, -2=SOP, -3=SSOP) │ │ │ └── Product number within series │ │ └── Type (F=Flash MCU, V=Voice, B=Bridge) │ └── Family (66/67/68=Flash MCU, 45=Touch, 82=Voice, 42=USB, 16=LCD) └── Holtek prefix Example: HT66F0185 = Flash MCU, general purpose Example: HT42B534-1 = USB to UART Bridge, SOP package ``` ### BS Series (Body Sensor/Touch) ``` BS83[LINE][KEYS][VARIANT]-[PACKAGE] │ │ │ │ │ │ │ │ │ └── Package suffix │ │ │ └── Variant letter (A, B) │ │ └── Number of touch keys │ └── Series 83 (capacitive touch) └── Body Sensor prefix Example: BS83B16A-3 = Touch MCU, 16 keys, variant A, SSOP package ``` ### Example Decoding ``` HT66F0185 │ │ │ │ │ │ │ └── Product number 0185 │ │ └── F = Flash MCU │ └── 66 = General purpose Flash MCU family └── HT = Holtek prefix BS83B16A-3 │ │ │ │ │ │ │ │ │ └── -3 = SSOP package │ │ │ └── A = Variant │ │ └── 16 = 16 touch keys │ └── B = Enhanced series └── BS83 = Body Sensor capacitive touch ``` --- ## Package Codes | Code | Package | Notes | |------|---------|-------| | -1 | SOP | Standard SOP | | -2 | SOP | SOP variant | | -3 | SSOP | Shrink SOP | | SS | SSOP | Inline suffix | | SOP | SOP | Inline suffix | | NS | NSOP | Narrow SOP | | QF | QFP | Quad Flat Package | | DIP | DIP | Through-hole | --- ## Product Families ### Flash MCUs (HT66F, HT67F, HT68F) | Series | Type | Key Features | |--------|------|--------------| | HT66F | General Flash MCU | General purpose, up to 64KB Flash | | HT67F | LCD Flash MCU | Built-in LCD driver | | HT68F | Enhanced I/O MCU | More GPIO pins | ### Touch MCUs (HT45F, BS83) | Series | Type | Key Features | |--------|------|--------------| | HT45F | Touch Key MCU | Capacitive touch sensing | | BS83A | Touch MCU | Basic capacitive touch | | BS83B | Enhanced Touch MCU | More touch channels | ### Voice/Audio ICs (HT82V) | Series | Type | Key Features | |--------|------|--------------| | HT82V739 | Voice Synthesis | OTP voice IC | ### USB Interface (HT42B) | Series | Type | Key Features | |--------|------|--------------| | HT42B534 | USB-UART Bridge | USB to serial converter | ### LCD Drivers (HT16xx) | Series | Type | Key Features | |--------|------|--------------| | HT1621 | LCD Controller | 32x4 segment LCD | | HT1621B | LCD Controller | Enhanced HT1621 | | HT1628 | LED/LCD Controller | Combined LED and LCD | --- ## Handler Implementation Notes ### Component Type Detection ```java // Flash MCUs: HT66F, HT67F, HT68F patterns boolean isFlashMCU = upperMpn.matches("^HT6[678]F\\d+.*"); // Touch MCUs: HT45F and BS83 patterns boolean isTouchMCU = upperMpn.startsWith("HT45F") || upperMpn.startsWith("BS83"); // All HT and BS parts are ICs boolean isIC = upperMpn.startsWith("HT") || upperMpn.startsWith("BS"); ``` ### Package Code Extraction ```java // Check suffix-based codes first (-1, -2, -3) if (upperMpn.endsWith("-3")) return "SSOP"; if (upperMpn.endsWith("-1") || upperMpn.endsWith("-2")) return "SOP"; // Then check inline codes (SS, SOP, NS, QF) // Must verify position > 4 to avoid false matches ``` ### Series Extraction ```java // HT series extracts family + type if (upperMpn.startsWith("HT66F")) return "HT66F"; if (upperMpn.startsWith("HT67F")) return "HT67F"; if (upperMpn.startsWith("HT68F")) return "HT68F"; // BS series preserves variant letter if (upperMpn.startsWith("BS83B")) return "BS83B"; if (upperMpn.startsWith("BS83A")) return "BS83A"; if (upperMpn.startsWith("BS83")) return "BS83"; // Generic fallback // LCD drivers include full 4-digit series if (upperMpn.startsWith("HT1621")) return "HT1621"; if (upperMpn.startsWith("HT1628")) return "HT1628"; ``` ### Product Code Extraction The handler provides `extractProductCode()` for getting the full alphanumeric product identifier: ```java // HT66F0185 -> HT66F0185 // BS83B16A-3 -> BS83B16A (strips package suffix) // HT1621B -> HT1621B ``` --- ## Related Files - Handler: `manufacturers/HoltekHandler.java` - Component types: `MICROCONTROLLER`, `IC` --- ## Helper Methods The handler provides convenience methods for categorization: | Method | Purpose | |--------|---------| | `isTouchMCU(mpn)` | Returns true for HT45F and BS83 series | | `isFlashMCU(mpn)` | Returns true for HT66F, HT67F, HT68F | | `isLCDDriver(mpn)` | Returns true for HT16xx series | | `isVoiceIC(mpn)` | Returns true for HT82V series | | `isUSBIC(mpn)` | Returns true for HT42B series | --- ## Learnings & Edge Cases - **BS prefix exception**: BS83 is Holtek despite different prefix (Body Sensor) - **HT16xx LCD drivers**: These are NOT MCUs, just LCD controller drivers - **Touch key count**: BS83B16A has 16 keys encoded in part number - **Package suffix variants**: -1 and -2 both mean SOP (different internal variants) - **HT67F LCD MCU**: Has built-in LCD driver, different from HT1621 standalone driver - **Voice ICs are OTP**: HT82V series uses One-Time Programmable memory, not Flash <!-- Add new learnings above this line -->