Holtek Microcontroller Unlock

Supported Device Families

We support unlock and firmware extraction for the following Holtek series. If your exact part isn't listed, contact us – we're constantly researching new types.

HT23B / HT36R / HT45RXX

HT45R02 HT45R03 HT45R04 HT45R04E HT45R05 HT45R06 HT45R07 HT45R09 HT45R11 HT45R15 HT45R16 HT45R23 HT45R24 HT45R34 HT45R35 HT45R36 HT45R38 HT45R52 HT45R54 HT45R0C HT45R0D HT45R0E HT45R0F HT45R0G HT45R0H HT45R0K HT45R0L HT45R0M HT45R0N HT45R0P HT45R0Q HT45R0S HT45R0T HT45R0W HT45R0Y HT45R0Y-RC HT45R0MA HT45R0MA-RC HT45R23 HT45R24 HT45R35 HT45RM02 HT45RM03 HT45RM03A HT36RA1 HT36RA4 HT36RM4 HT36RFA HT23B60R

HTxxFxx Series (I)

HT46F46E HT46F47E HT46F48E HT46F49E HT48F06E HT48F06V HT48F10E HT48F10V HT48F30E HT48F30V HT48F50E HT48F70E HT48E06 HT48E10 HT48E30 HT48E50 HT48E70 HT46F47V HT48F48V HT48F06V HT48F10V HT46F46V HT46F47E-T

HT66Fxx Series

HT66F005 HT66F006 HT66F007 HT66F0172 HT66F0174 HT66F018 HT66F019 HT66F03 HT66F032 HT66F03C HT66F03L HT66F03M HT66F03T3 HT66F04 HT66F042 HT66F04C HT66F04L HT66F04M HT66F13 HT66F14 HT66F15 HT66F15T HT66F20 HT66F20-1 HT66F23D HT66F24D HT66F25D HT66F26D HT66F30 HT66F30-1 HT66F40 HT66F4540 HT66F50 HT66F60 HT66F60A HT66F70A HT66F840 HT66F850 HT66F860 HT66FB20 HT66FB30 HT66FB30-1 HT66FB40 HT66FB50 HT66FB540 HT66FB550 HT66FB560 HT66FB60 HT66FB70A HT66FH2230 HT66FH2340 HT66FM2240 HT66FM5230 HT66FM5240 HT66FM5340 HT66FR840 HT66FR850 HT66FR860 HT66FU20 HT66FU30 HT66FU30-1 HT66FU40 HT66FU50 HT66FU60 HT66FU60A HT66FU70A HT66FV140 HT66FV240 HT66F002 HT66F0021 HT66F0022 HT66F003 HT66F004 HT66F0042 HT66F0082 HT66F0175 HT66F0185 HT66F0187 HT66F317 HT66F318 HT66F319 HT66F4360 HT66F4370 HT66F504 HT66F508 HT66F5174 HT66F518 HT66FV160 HT66FV150 HT66FV130 HT66FW2230 HT66FW2540

HT67F / 68F / 69F / 83F / 88F

HT67F30 HT67F40 HT67F4260 HT67F488 HT67F489 HT67F50 HT67F5640 HT67F60 HT67F60A HT67F70A HT68F005 HT68F006 HT68F007 HT68F016 HT68F016L HT68F016R HT68F017 HT68F0172 HT68F0174 HT68F017L HT68F017R HT68F018 HT68F03 HT68F032 HT68F03C HT68F03L HT68F03M HT68F03T3 HT68F04 HT68F042 HT68F04C HT68F04L HT68F04M HT68F13 HT68F14 HT68F15 HT68F20 HT68F20-1 HT68F30 HT68F30-1 HT68F40 HT68F50 HT68F60 HT68F60A HT68F70A HT68FB20 HT68FB240 HT68FB30 HT68FB30-1 HT68FB40 HT68FB50 HT68FB540 HT68FB550 HT68FB560 HT68FB60 HT68FU20 HT68FU30 HT68FU30-1 HT68FU40 HT68FU50 HT68FU60 HT69F20 HT69F240 HT69F30A HT69F40A HT69F50A HT83F02 HT83F02_128M HT83F02_16M HT83F02_1M HT83F02_2M HT83F02_32M HT83F02_4M HT83F02_64M HT83F02_8M HT83F10 HT83F20 HT83F22 HT83F22_128M HT83F22_16M HT83F22_1M HT83F22_2M HT83F22_32M HT83F22_4M HT83F22_64M HT83F22_8M HT83F40 HT83F60 HT83F60-1 HT83F80 HT83F80-1 HT88F60 HT88F80 TS3F464D TS3F464N TS3F465D TS3F465S TS3F466K TS3F466S

HT66F Add. / HT32F / HT45F

HT66F016 HT66F016L HT66F016R HT66F017 HT66F017L HT66F017R HT32F1251 HT32F1251B HT32F1252 HT32F1253 HT32F1755 HT32F1765 HT32F2755 HT45F0V HT45F0V-L HT45F0V-M HT45F0VP-L HT45F12 HT45F15 HT45F15B HT45F16 HT45F17 HT45F17-1 HT45F19 HT45F1B HT45F1B-1 HT45F1B-2 HT45F20 HT45F23 HT45F23A HT45F23A-3 HT45F23-N HT45F24A HT45F24A-3 HT45F26 HT45F2H HT45F2J HT45F2P HT45F2P_T1 HT45F2S HT45F2T HT45F2U HT45F2Y HT45F2Z HT45F32 HT45F3H HT45F3M HT45F3N HT45F3P HT45F3W HT45F43 HT45F4M HT45FH2T-1 HT45FH3P HT45FH3T HT45FH3T-2 HT45FH4J HT45FH4M HT45FH4M-1 HT45FH4N HT45FH4T HT45FH82 HT45FM03B HT45FM2C HT45FM2D HT45FM30 HT45FS4R HT45FM2D HT45F22A HT45F2H HT45F4L HT45F4MA HT45F4N HT45F4P HT45F4Q HT45F4W HT45F4Y HT45F51 HT45F56 HT45F57 HT45F5F HT45F5H HT45F5M HT45F5Q HT45F5V HT45F623 HT45F64 HT45F65 HT45F66 HT45F67 HT45F6F HT45F6G HT45F6P HT45F72 HT45F75 HT45F77 HT45F906 HT45F920 HT45FHOYB-1 HT45FH23A HT45FH24A HT45FH3M HT45FH5J HT45FH5W HT45FH6F HT430F08

HT46RXX Series

HT46R01 HT46R02 HT46R03 HT46R04 HT46R064 HT46R065 HT46R12 HT46R12A HT46R14 HT46R14A HT46R22 HT46R23 HT46R232 HT46R321 HT46R322 HT46R342 HT46R343 HT46R24 HT46R32 HT46R34 HT46R42 HT46R46 HT46R46-H HT46R46E HT46R46V HT46R47 HT46R47-H HT46R47E HT46R47V HT46R48 HT46R48A HT46R48AE HT46R48E HT46R48V HT46R49 HT46R49A HT46R49E HT46R4AE HT46R51 HT46R51A HT46R52 HT46R52A HT46R53 HT46R53A HT46R54 HT46R54A HT46R62 HT46R63 HT46R64 HT46R644 HT46R65 HT46R652 HT46R71 HT46R71D HT46R72 HT46R72D HT46R73 HT46R73D HT46R74 HT46R74D HT46R82 HT46R83 HT46R84 HT46R92 HT46R94 HT46RB50 HT46RB70 HT46RU22 HT46RU232 HT46RU24 HT46RU25 HT46RU26 HT46RU66 HT46RU67 HT46RU68 HT46RU75D HT46RS03

HT47RXX Series

HT47R10 HT47R10A-1 HT47R20 HT47R20A-1

HT48RXX Series

HT48R01 HT48R02 HT48R03 HT48R05 HT48R05A-1 HT48R06 HT48R062 HT48R06A-1 HT48R06A-2 HT48R06E HT48R06V HT48R07 HT48R07A-1 HT48R07V HT48R08 HT48R08A-1 HT48R08V HT48R09 HT48R09A-1 HT48R09V HT48R0AA-1 HT48R10 HT48R10A-1 HT48R11 HT48R12 HT48R30 HT48R30A-1 HT48R31 HT48R32 HT48R37 HT48R37A-1 HT48R50 HT48R5OA-1 HT48R51 HT48R52 HT48R502 HT48R52A HT48R53 HT48R54A HT48R70 HT48R70A-1 HT48RA0-1 HT48RA0-2 HT48RA0-3 HT48RA0-4 HT48RA0A HT48RA0 HT48RA1 HT48RA3 HT48RA3-N HT48RA5 HT48RB8 HT48RU80 HT48RU90 HT48X50 HT48X50A-1

HT49RXX Series

HT49R10A-1 HT49R30 HT49R30A-1 HT49R50 HT49R50A-1 HT49R70 HT49R70A-1 HT49R84 HT49RA0 HT49RA1 HT49RB50 HT49RB70 HT49CA0 HT49RU80 HT49RU90 HT49RV3 HT49RV5 HT49RV7 HT49RV9

HT56R / HT57R / HT81RXX

HT56R62 HT56R64 HT56R642 HT56R65 HT56R654 HT56R656 HT56R66 HT56R666 HT57R20 HT81R03 HT81R09 HT81R18 HT81R3 HT82A802 HT82A821 HT82A822 HT82A832 HT82A851R HT82J30R HT82J97E HT82J98E HT82K68E HT82K69E HT82K70E HT82K71E HT82K72E HT82K73E HT82K75E HT82K92E HT82K94E HT82K95E HT82K95EE HT82K96E HT82M66E HT82M72E HT82M73E HT82M99E HT82M99EE HT82M99EC HT82M9AE HT82M9AEE HT82M9BE HT82M9BEE

It is impossible to list all part numbers we can unlock. If your chip is not listed, please contact us – we can research new types to fit your demand.

About Holtek Semiconductor

Holtek Semiconductor is a leading professional IC design house in Taiwan having its major business activities focused in the area of microcontroller and peripheral component design and marketing. Because so many of its MCUs are used in long-lived consumer products, reverse engineering of older Holtek parts is sometimes needed when the original code is lost. From its origins in 1998, the company has continuously focused its energies in the advancement of new product development and skills innovation. Firmware extraction from a Holtek MCU normally requires the vendor's OTP writer, since most parts are one-time programmable. The company's ability to keep in line with market trends, has given Holtek the means of releasing a wide range of highly successful and extremely competitive IC devices. In the hobbyist community, engineers frequently hack together simple programmers to reuse surplus Holtek parts in small projects.

With its headquarters and research and development activities located in the prestigious Hsinchu Science Park, Holtek has also built up a global sales network location reaching out to all important countries and microcontroller and microcontroller peripheral devices. With devices shipped around the world, a register dump or trace capture is often the first support step when a field failure is reported. In this regard the company has developed and established its image as a professional MCU designer with the expanding MCU application area and service levels creating more room for new development. The expanding application areas also let designers unlock fresh use cases for each MCU family as they appear.

Presently the Holtek Semiconductor device range includes general purpose and specialised types of microcontrollers, which in addition to being used in general purpose applications, also see specialised use in the voice, communication, computer peripheral, household appliance, medical equipment, automotive and security etc. application areas. Because some of these MCUs end up in security and medical equipment, they must be designed to resist a physical attack on the package.

Additionally, Holtek supplies a range of power management devices, LCD and LED drive/control chips, ultra-high resolution fingerprint identification sensors and a variety of sensor modules and other peripheral devices, ensuring that customers are supplied with a functionally comprehensive set of device solutions. Because Holtek's development tools are inexpensive and widely bundled with evaluation kits, there is little incentive to crack their licensing.