HT95L100 Datasheet | Holtek Semiconductor

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, - Up to 1.117ms instruction cycle with 3.58MHz system 8-Bit LCD Type Phone Controller MCU clock - Built-in 3.58MHz DTMF Generator - LCD driver: - 20 seg.´8 . - 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 Green mode and Normal mode Applications - Deluxe Feature Phone - Caller ID Phone - Cordless Phone - Fax and answering machines - Other munication 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 tele product application. 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 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...