Holtek takes pleasure in announcing its new 8-bit OTP dual slope A/D type MCU, the HT46R73D-3. With 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, tire pressure gauges etc.
The HT46R73D-3 contains 4K of OTP Program Memory, 128 bytes of Data Memory, two 16-bit timers and one 8-bit timer together with a Buzzer output, up to 16 I/O pins, external wake up and interrupt touch functions. The internal LCD driver circuit can drive LCD panels of up to 64 pixels. Central to the device is its 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 a four touch-key function 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 Detect and Low Voltage Reset functions, offer excellent safeguards and protection against low system voltages and noisy electrical environments.
Features:
- Operating voltage:
- fSYS=4MHz: 2.2V~5.5V
- fSYS=8MHz: 3.3V~5.5V
- Three system oscillators:
- External Crystal oscillator
- External RC oscillator
- Internal RC oscillator
- Up to 16 bidirectional I/O lines
- One external interrupt input shard with an I/O lines
- One 8-bit and two 16-bit programmable timer/event counter with overflow interrupt a 8-stage pre-scalar
- LCD driver with 16×4 segments
- 4K×15 program memory
- 128×8 data memory RAM
- Single differential input channel dual slope Analog to Digital Converter with Operational Amplifier
- Watchdog Timer with regulator power
- Buzzer output
- Internal 12kHz RC oscillator
- External 32.768kHz Crystal oscillator
- HALT function and wake-up feature reduce power consumption
- Voltage regulator (3.3V) and charge pump
- Embeded voltage reference generator (1.5V)
- 4-level subroutine nesting
- Bit manipulation instruction
- 15-bit table read instruction
- Up to 0.5us instruction cycle with 8MHz system clock at VDD=5V
- 63 powerful instructions
- All instructions in 1 or 2 machine cycles
- Low voltage reset function
- One vibration sensor input
- Four touch-key inputs
- 52-pin QFP package
Complementing Holtek's range of MCU devices is a comprehensive suite of hardware and software tools in the form of the HT-IDE3000 development system. Features such as real time emulation, memory/register modification, hardware execution breakpoints, trace analyzers etc, are all standard features of the system, and all of which add together to provide designers with all the tools they need for rapid and efficient product application development and debug.
