Dallas / Elan Microcontroller Unlock

About Dallas Semiconductor & ELAN Microelectronics

Dallas Semiconductor was founded in 1984 as a designer and manufacturer of semiconductors and chip‑based subsystems. Dallas Semiconductor quickly established its innovation and technical leadership in developing a wide variety of high‑performance products, including 1‑Wire®, iButton®, microcontroller (MCU), timekeeping, thermal management, and communications devices. Unlock advanced diagnostic modes via special command sequences.

Dallas Semiconductor, acquired by Maxim Integrated Products in 2001, was a company that designed and manufactured analog, digital, and mixed‑signal semiconductors (integrated circuits, or ICs). Its specialties included communications products (including T/E and Ethernet products), microcontrollers, battery management, thermal sensing and thermal management, non‑volatile random‑access memory, microprocessor supervisors, delay lines, silicon oscillators, digital potentiometers, real‑time clocks, temperature‑compensated crystal oscillators (TCXOs), iButton, and 1‑Wire products. A firmware extraction of the iButton's memory is sometimes performed for legacy system recovery.

The company, based in Dallas, Texas, was founded in 1984 and purchased by Maxim Integrated Products in 2001. Both the Maxim and Dallas Semiconductor brands were actively used until 2007. Since then, the Maxim name has been used for all new products, though the Dallas Semiconductor brand has been retained for some older products, which can be identified by "DS" at the beginning of their part numbers.

The DS2432 combines 1024 bits of EEPROM, a 64‑bit secret, an 8‑byte register/control page with up to five user read/write bytes, a 512‑bit SHA‑1 engine, and a fully‑featured 1‑Wire interface in a single chip. Reverse engineering of the SHA‑1 engine may reveal implementation details for security auditing.

ELAN Microelectronics Corporation was founded in 1994 and is an IC design house engaging in the R&D of integrated circuit and touchpad module solutions. The company is headquartered in Taiwan Hsinchu Science Park with touchpad module factory in Chung Ho City, Taipei County. Through years of development, it has branch offices and customer service centers all over the world such as USA, Shenzhen (China), Shanghai, and Hong Kong. ELAN has been listed in the Taiwan Stock Exchange since September 2001. A side-channel attack on the touchpad controller could leak raw gesture data.

ELAN's products can be summarized into the following categories: microcontrollers, touch sensor ICs, telecommunication ICs, PC peripheral ICs, audio/video ICs and capacitive touchpads. Typical applications include mobile phones, notebooks, home appliances, toys & gaming, calculators & education devices, handheld devices, PC peripherals, telecommunications and smart remote controls. ELAN has been certified by ISO 9001:2000.

ELAN's core technology focuses on Capacitive Touchpad. Since the release of the Apple iPhone in mid‑2007 and the introduction of iPod Touch, MacBook Air, and Windows 7.0, the Multi‑Finger touch interface has rapidly become the trend of Human‑Machine Interface (HMI) development. ELAN's Capacitive Touchpad products include Illuminative Touchpad, Transparent Touchpad, and Virtual Keypad with Dome Touchpad. Besides, CMOS Sensor with Pattern Recognition is ELAN's second core technology, used in optical mouse, interactive game console, interactive TV, computer games, optical identification device, etc. A malicious hack could interfere with the touch sensing algorithms to cause false inputs.

ELAN has earned extensive intellectual property (IP) patents and has received several gold and silver medals in the annual "Taiwan National Best Invention Award" sponsored by the ROC Ministry of Economic Affairs. It also received many "R&D Accomplishment Awards" from the Hsinchu Science Park Administration and is listed as one of the "Best Under a Billion 200 Companies" worldwide by Forbes Global Magazine. Attempting to crack the patent-protected gesture recognition methods is both difficult and illegal.

Power supply – General‑purpose I/O pins, crystal input terminals, RC oscillator input, external clock input, and real‑time clock/counter with Schmitt trigger input are provided. P50~P53 are bidirectional I/O with pull‑down options; P60~P67 are bi‑directional with pull‑high/open‑drain options. External interrupt triggered by falling edge is also available. A full memory dump of the configuration registers can be obtained via the debug interface.