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HT98R068 -- Two Way Radio 8-Bit MCU
General Description
The device is an ASSP MCU for analog two way
radio applications such as FRS. This device contains an 8-bit MCU,
Audio Processor, ADC, DAC as well as an Operational Amplifier for
peripheral interfaces. Additionally there are external interrupt
functions and 16K of OTP Program Memory and 1K of SRAM Data Memory
for general MCU control application. The Internal Audio Processor
supports various programmable functions. These functions include
CTCSS/DCSS encoding/decoding, DTMF encoding/decoding,
scramble/descramble, VOX, compandor and so on. By connecting to a
suitable RF module, the device provides a cost effective and
flexible audio RF solution. Applications should include products in
the Leisure Radio application area such as General Mobile Radios,
Personal Mobile Radios, Multiple User Radios etc.
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Features
- Operating voltage: 3V~5V
- Up to 0.25us instruction cycle with 16MHz system clock
- OTP Program Memory:16K x 16
- Data Memory: 1K x8
- Up to 34 bidirectional I/O lines
- Ocillator type: external 32768Hz crystal -- LXT
- Internal PLL to generate the system clock
-- Input reference clock : 32768Hz
-- Output: 2.048MHz x4/x5/x6/x8 (optional)
- Four operational modes: Normal, Slow, Idle, Sleep
- Watchdog Timer function with WDT oscillator
- Real Time Clock function
- 8 channel 12-bit A/D converter
- 4 channel 8-bit D/A converter
- All instructions executed in one or two instruction cycles
- Table read instructions
- 63 powerful instructions
- Up to 10-level subroutine nesting
- Bit manipulation instruction
- Low voltage reset function
- Low voltage detect function
- SPI interface for external MCU control
- Two 8-bit and signal 16-bit programmable Timer/Event Counter
with overflow interrupt and prescaler
- Programmable Frequency Divider -- PFD
- PGA : 5bit Operational Amplifier Gain setup
- Sub-tone processor
-- CTCSS/DCS encode/decode
- In-band-Tone processor
-- DTMF encoder/decode
-- Selective call encoder/decoder
-- User defined tone encoder/decoder
- Audio processor
-- Pre-emphasis/De-emphasis
-- Scrambler
-- Compandor
-- VOX
- Package types: 48/64-pin LQFP
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