App note from Holtek on their Real time clock IC HT1382. Link here (PDF) The HT1382 is a low power real time clock device which includes two serial interfaces: I2C or 3-wire. The interface mode is selected by the selected device type. The device provides both clock and calendar information in BCD format and also […]
Tag Archives: Holtek
App note: HT45B3305H CAN Bus Controller usage and library description
App note from Holtek on their CAN Bus controller chip HT45B3305H. Link here (PDF) Holtek has released a CAN Bus interface control device, the HT45B3305H. The CAN physical layer can support high-speed networks up to 1 Mbit/s and supports the CAN 2.0A/B protocol as well as conforming to the ISO11898-1:2003 specification. It has 32 internal […]
App note: HT7K1xxx drive actuator
App note from Holtek on their HT7K1xxx series drive control that replace limit switches but uses speed reduction instead when controlling motor actuation. Link here (PDF) In actuator applications, when a valve or an actuator has reached the end of its stroke, the motor input power will be switched off using a limit switch. This […]
App note: HT45F4050 NFC function
App note from Holtek on their HT45F4050 device which discuss its hardware and software application. Link here (PDF) NFC, which is an acronym for Near Field Communication, is a technology allowing wireless connection between devices using a simple touch. NFC technology operates at a frequency of 13.56MHz with an operating distance within 10cm. It has […]
App note: HT62104 infrared remote encoder IC
App note from Holtek on their dedicated IR remote IC. Link here (PDF) The HT62104 is a high performance infrared remote encoder capable of encoding a signal with a 3-bit start code, 2-bit custom code and 7-bit data code. The HT62104 device has 8 key inputs. When one of the keys is triggered, the programmed […]
App note: Power Battery Charger Calibration Fixture
Automated battery charger calibration fixture using Holtek’s ASSP MCUs. Link here (PDF) Power chargers for electric bicycles, electric motorcycles and power tools, etc., are all calibrated before delivery, thereby correcting any charging parameter drifts due to external component tolerances. This will ensure the output voltage and current conform to their specifications. However, traditional applications are […]
App note: BA45F55xx with power line transceiver
App note from Holtek on power line transceiver found on their BA45F55xx MCU. Link here (PDF) A Power Line Transceiver is a fire protection dual-line bus which is used as a data transceiver. The master gives a command to the slave using a voltage signal modulation method while the slave responds to the master using […]
App note: HT66FB574 single colour independent light streamer USB keyboard
Another app note from Holtek this time about their HT66FB574, a USB keyboard device that can support single color LED streamer. Link here (PDF) The video gaming industry is seeing continual increasing demand for multi-feature keyboards. These can include features such as keys with an individual LED which can display different graphical effects along with […]
App note: HT66FB574/572 colour effect USB mouse
App note from Holtek on using their HT66FB574/572 to develop color effect mice. Link here (PDF) Demands from the video gaming industry for different types of gaming mouse continue to expand. Adding a large number of RGB LEDs to the mice can produce different colours and brightness changes creating a range of visual special effects. […]
App note: Power battery charger application guidelines
App note from Holtek on smart battery chargers. Link here (PDF) Battery chargers usually are products which transfer alternating currents to low voltage direct currents and which are widely applied in various rechargeable battery application fields. According to different applications, battery chargers can be divided into two types, namely digital chargers and power battery chargers. […]
App note: I/O emulated UART baud rate calibration
Software/bitbang method of baud rate calibration for micro without built-in UART, App note from Holtek. Link here (PDF) Not every HOLTEK MCU contains a Universal Asynchronous Receiver/Transmitter function, otherwise known as a UART. If this function is required, it can be emulated using software. However, the software accuracy will change according to the system frequency […]
App note: HT45F3630 power tool speed control switch application example
All in one motor control MCU HT45F3630 from Holtek. Link here (PDF) Aimed at the motor speed control product application area, HOLTEK has developed the HT45F3630, which is commonly used in electric drills, electric screwdrivers, lawn mowers and other similar product applications. This MCU provides a group of PWM high voltage and large current output […]
App note: HT45F3420 LED flashlight application
Holtek’s HT45F3420 MCU provide LED flashlight application all in with minimal external components. Link here (PDF) In traditional LED flashlight application circuits, the battery is used to directly drive the LED which will cause uneven brightness levels and the possibility of damaged LEDs due to changing battery conditions. Using the HT45F3420 for LED flash application, […]
App note: BH45F0031 Earphone jack communication
Holtek’s App note about their audio to digital signal converter chip BH45F0031 that together with an phone app, communication via audio phone jack is possible. Link here (PDF) The BH45F0031 is a Flash type 8-bit high performance RISC architecture microcontroller, which is designed for smart phone headset interface applications that can directly transmit data and […]