-- LCD Type Phone 8-Bit MCU HT95L300

产品简介

The HT95L300 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.

产品详细信息

Features

Provide MASK type and OTP type version
Operating voltage range: 2.4V~5.5V
Program ROM: 8K×16 bits
Data RAM: 2112×8 bits
Bidirectional I/O lines: 28~16 I/O lines
16-bit table read instructions
Subroutine nesting: 8 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: 48 seg.×16 com.

100-pin QFP package

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