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HT95A300 Datasheet(PDF) 1 Page - Holtek Semiconductor Inc |
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HT95A300 Datasheet(HTML) 1 Page - Holtek Semiconductor Inc |
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1 / 42 page  HT95L100/10P 8-Bit LCD Type Phone Controller MCU Rev. 0.10 1 October 1, 2002 Features · Provide MASK type and OTP type version · Operating voltage range: 2.4V~5.5V · Program ROM: 4K´16 bits · Data RAM: 1152´8 bits · Up to 20 bidirectional I/O lines · 16-bit table read instructions · Eight-level subroutine nesting · Timer: - Two 16-bit programmable Timer/Event Counter - Real time clock (RTC) - Watchdog Timer (WDT) · Programmable frequency divider (PFD) · Dual system clock: 32768Hz, 3.58MHz · Four operating modes: Idle mode, Sleep mode, Green mode and Normal mode · Up to 1.117ms instruction cycle with 3.58MHz system clock · Built-in 3.58MHz DTMF Generator · LCD driver: - 20 seg.´8 com. - 4 segments can per nibble option to bidirectional I/O lines - LCD contrast can be adjusted by software or exter- nal resistor - Fixed frame frequency 64Hz · Built-in Low Battery detector · All instructions in one or two machine cycles · Built-in dialer I/O · 64-pin QFP package Applications · Deluxe Feature Phone · Caller ID Phone · Cordless Phone · Fax and answering machines · Other communication system General Description The HT95L100/10P 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 applica- tion. The phone controller has a built-in program ROM, data RAM, LCD driver and a maximum of 20 I/O lines for high end products design. In addition, for power man- agement purpose, it has a built-in frequency up conver- sion circuit (32768Hz to 3.58MHz) which provides dual system clock and four types of operation modes. For ex- ample 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 opera- tion. 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 pro- vided for additional fancy features in product develop- ments. The device is best suitable for feature phone products that comply with versatile dialer specification requirements of different areas or countries. Preliminary |
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