HT46R01T3/ HT48R01T3 -- 8-Bit OTP 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 +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.

Features

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
synchronisation