HT95LXXX -- LCD Type Phone 8-Bit MCU

General Description

The HT95LXXX family MCU are 8-bit high performance RISC-like microcontrollers with built-in DTMF generator and dialer I/O which provide MCU dialer implementation or system control features for telecom product applications. The phone controller has a built-in program ROM, data RAM, LCD driver and I/O lines for high end products design. In addition, for power management purpose, it has a built-in frequency up conversion circuit (32768Hz to 3.58MHz) which provides dual system clock and four types of operation modes. For example, it can operate with low speed system clock rate of 32768Hz in green mode with little power consumption. It can also operate with high speed system clock rate of 3.58MHz in normal mode for high performance operation. To ensure smooth dialer function and to avoid MCU shut-down in extreme low voltage situation, the dialer I/O circuit is built-in to generate hardware dialer signals such as on-hook, hold-line and hand-free. Built-in real time clock and programmable frequency divider are provided for additional fancy features in product developments. The device is best suited for feature phone products that comply with versatile dialer specification requirements of different areas or countries.

Features

  • Provide MASK type and OTP type version
  • Operating voltage range: 2.4V~5.5V
  • Program ROM
    - HT95L400/40P: 16K×16 bits
    - HT95L300/30P: 8K×16 bits
    - HT95L200/20P: 8K×16 bits
    - HT95L100/10P: 4K×16 bits
    - HT95L000/00P: 4K×16 bits
  • Data RAM
    - HT95L400/40P: 2880×8 bits
    - HT95L300/30P: 2112×8 bits
    - HT95L200/20P: 1152×8 bits
    - HT95L100/10P: 1152×8 bits
    - HT95L000/00P: 384×8 bits
  • Bidirectional I/O lines
    - HT95L400/40P: 40~28 I/O lines
    - HT95L300/30P: 28~16 I/O lines
    - HT95L200/20P: 28~20 I/O lines
    - HT95L100/10P: 20~16 I/O lines
    - HT95L000/00P: 18~14 I/O lines
  • 16-bit table read instructions
  • Subroutine nesting
    - HT95L400/40P: 12 levels
    - HT95L300/30P: 8 levels
    - HT95L200/20P: 8 levels
    - HT95L100/10P: 8 levels
    - HT95L000/00P: 4 levels
  • Timer
    - Two 16-bit programmable Timer/Event Counter
    - Real time clock (RTC)
    - Watchdog Timer (WDT)
  • Programmable frequency divider (PFD)
    Supported for HT95L400/40P, HT95L300/30P, HT95L200/20P, HT95L100/10P
  • Dual system clock: 32768Hz, 3.58MHz
  • Four operating modes: Idle mode, Sleep mode, Green mode and Normal mode
  • Up to 1.117µs instruction cycle with 3.58MHz system clock
  • All instructions in one or two machine cycles
  • Built-in 3.58MHz DTMF Generator
  • Built-in dialer I/O
  • Built-in low battery detector
    Supported for HT95L400/40P, HT95L300/30P, HT95L200/20P, HT95L100/10P
  • LCD driver
    - LCD contrast can be adjusted by software or external resistor
    - Support two LCD frame frequency 64Hz, 128Hz
    - Support 16 or 8 common driver pins
    - Some segments or commons can option to bidirectional I/O lines
    - HT95L400/40P: 48 seg.×16 com.
    - HT95L300/30P: 48 seg.×16 com.
    - HT95L200/20P: 24 seg.×16 com.
    - HT95L100/10P: 20 seg.×8 com.
    - HT95L000/00P: 16 seg.×8 com.
  • HT95L400/40P: 128-pin QFP package
    HT95L300/30P: 100-pin QFP package
    HT95L200/20P: 100-pin QFP package
    HT95L100/10P: 64-pin LQFP package
    HT95L000/00P: 56-pin SSOP package

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