HT46R01T3/ HT48R01T3 -- 8-Bit OTP MCU with RF Transmitter
(HT48R01T3 Restricted Products. Notification Date: 2015/07/02 Effective Date: 2015/10/02)

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 +9dBm into a 50 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 there is a reference clock input on line PB0, the MCU can use its internal RC clock rather than using an additional crystal for the 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.


MCU Features

  • MCU Operating voltage:
    fSYS= 4MHz: 2.2V~3.6V
    fSYS= 8MHz: 3.0V~3.6V
  • Power Down modes and wake-up functions to reduce power consumption
  • Oscillator types
    - External high frequency Crystal
    - External RC
    - Internal RC
    - External low frequency crystal
    - Watchdog Timer Internal RC Oscillator
  • Three operational modes: Normal, Slow, Sleep
  • Fully integrated internal 4MHz, 8MHz oscillator
    requires no external components
  • OTP Program Memory: 1Kx15
  • RAM Data Memory: 96x8
  • Watchdog Timer function
  • All instructions executed in one or two instruction cycles
  • Table read instructions
  • 63 powerful instructions
  • 6-level subroutine nesting
  • Bit manipulation instruction
  • Low voltage reset function
  • 16-pin NSOP package type
  • Up to 8 bidirectional I/O lines
  • 4 channel 12-bit ADC
  • 1 channel 8-bit PWM
  • External interrupt input shared with an I/O line
  • Two 8-bit programmable Timer/Event Counter with
    overflow interrupt and prescaler
  • Time-Base function
  • Programmable Frequency Divider - PFD

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

Technical Document

Other Information