Holtek announces the release of a new addition to its Atomiser Flash MCU range with the new BS45F3843. This new device is released as a product upgrade for its predecessor device, the BS45F3833. This upgraded device uses a new touch water detection method which greatly improves the water shortage protection/detection precision. The integrated atomiser control module unit within the MCU is used to generate the atomiser frequency tracking and water shortage detection control. A magnetic or dry reed pipe is not required for the water shortage protection/detection. The device now includes a UART communication interface which can be used as an external intelligent module (BLE/WIFI) control option. These features all combine make the device an excellent choice for various types of atomiser and humidifier products.
The powerful drive capability of this new device can directly drive a power MOS transistor and with its high operating efficiency can greatly reduce the number of required external components resulting in reduced manufacturing BOM costs and PCB area. This new device has an integrated touch circuit, 4K words of Flash Program Memory, 256 bytes of Data Memory, 32 bytes of EEPROM Memory, an internal high accuracy system oscillator of 12M/14MHz, a UART communication interface, a 12-bit A/D Converter and Timer Modules which can implement both LED illumination level and colour change functions.
With regard to packaging, the device is supplied in both 16NSOP and 24/28SSOP package.