HT66F03T3/HT68F03T3 -- 8-Bit Flash MCU with RF Transmitter

General Description

These devices provide a combination of a fully featured MCU plus an RF transmitter function, giving them great flexibility for use in wide range of wireless I/O control applications such as industrial control, consumer products, subsystem controllers, etc.

Analog features include a multi-channel 12-bit A/D converter. Multiple and extremely flexible Timer/Event Counters provide full timing functions. Protective features such as an internalWatchdog Timer and Low Voltage Reset coupled with excellent noise immunity and ESD protection ensure that reliable operation is maintained in hostile electrical environments. An extensive choice of oscillator functions are provided including a fully integrated system oscillator which requires no external components for its implementation. The ability to operate and switch dynamically between a range of operating modes using different clock sources gives users the ability to optimise microcontroller operation and minimise power consumption. The devices also include flexible I/O programming features Time-Base functions and a range of other features.

The RF transmitter is a high performance and easy to use transmitter operating in the 300MHz to 450MHz frequency band. One only needs to add a crystal reference frequency, and a limited number of external components to create a complete and versatile RF transmitter system. The device is capable of delivering more than +9 dBm into a 50 ohm load. Such a power level enables a small form factor transmitter to operate near the maximum limit of the transmission regulations. The device can operate with ASK - Amplitude Shift Keying, and OOK - On-Off Keying, UHF receiver types from wide-band super-regenerative radios to narrow-band, high performance super-heterodyne receivers. The data rate is higher than 10kbps, allowing the device to support more complicated control protocols.

For enhanced power saving, the device includes a data tracking function. The data tracking function enables the PLL to be activated as long as high transient data input trigger signals are received. The PLL will also be automatically switched off if there are no data input transients for a time exceeding approximately 300ms. As the RF Transmitter will also generate a synchronising signal, the MCU can use its internal RC clock rather than using an additional crystal for the MCU system clock. These features add up to ensure that the devices can offer excellent capabilities in terms of functionality and power-saving as well as being highly cost effective in a huge range of remote wireless applications.

Features

MCU Features

  • MCU operating voltage with RF Transmitter:
    fSYS= 8MHz: 2.2V~3.6V
    fSYS= 12MHz: 2.7V~3.6V
  • Up to 0.33us instruction cycle with 12MHz system clock
  • Power Down and Wake-up functions to reduce
    power consumption
  • Five oscillators:
    - External High Speed Xtal
    - External 32.768kHz Xtal
    - External RC
    - Internal High Speed - no external components
    - Internal 32kHz - no external components
  • Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
  • Fully integrated internal 4MHz, 8MHz and 12MHz Oscillator
  • All instructions executed in one or two instruction cycles
  • Table read instructions
  • 63 powerful instructions
  • Up to 8 subroutine nesting levels
  • Bit manipulation instruction
  • Flash Program Memory: 1Kx14
  • RAM Data Memory: 64x8
  • EEPROM Memory: 64x8
  • Watchdog Timer function
  • Up to 8 bidirectional I/O lines
  • External interrupt pin shared with I/O pin
  • Multiple Timer Modules for time measure, input capture, compare match output, PWM output or single pulse output functions
  • Comparator function
  • Dual Time-Base functions for generation of fixed time interrupt signal
  • Low voltage reset function
  • Low voltage detect function
  • Multi-channel 12-bit resolution A/D converter
  • Package type: 16-pin NSOP

RF Transmitter Features

  • Complete UHF ASK/OOK transmitter
  • Frequency range 300MHz to 450MHz
  • Data rates more than 10k bps
  • Output Power up to 10dBm
  • Low voltage operation - down to 2.2V
  • Data tracking function for power saving
  • Reference clock output for MCU IRC clock
    synchronisation

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