Atlantik Elektronik presents Holtek´s new dual slope A/D type MCU HT46R75D-3. Through internal touch-key functions as well as a wide range of other peripheral functions, this new device is especially suitable for the processing of analog signals from bridge sensor applications such as scales, pressure gauges, thermometers, humidity meters etc.
The HT46R75D-3 contains 8K of OTP program memory, 192 bytes of data memory, two 16-bit timers and one 8-bit timer together with a buzzer output, up to 22 I/O pins as well as an external wake up and interrupt touch function. The internal LCD driver circuit can drive LCD panels of up to 192 pixels. Central to the device is the dual slope A/D converter, a function which is widely used in measuring systems and which includes an amplifier, voltage follower, integrator, comparator, charge-pump and 3.3V output regulator. In addition, the device includes four touch-key functions and an external vibration sensor amplifier circuit. This combination of features provides an ideal solution for measuring applications which require touch key and vibration switch functions. The internal watchdog, low voltage detector and reset functions, offer excellent safeguards and protection against low system voltages and noisy electrical environments.
