HT49C50 Datasheet | Holtek Semiconductor

.. HT49C50 8-Bit Microcontroller Features - - - - - - - - - - - Operating voltage: 2.2V~5.2V 8 input lines 12 bidirectional I/O lines Two external interrupt input Two 8-bit programmable timer/event counter with PFD (programmable frequency divider) function LCD driver with 33 ´ 3 or 32 ´ 4 segments 4K ´ 15 program memory ROM 160 ´ 8 data memory RAM Real Time Clock (RTC) 8-bit prescaler for RTC Watchdog timer - - - - - - - - - - Buzzer output On-chip crystal and RC oscillator Halt function and wake-up feature reduce power consumption 6-level subroutine nesting Bit manipulation instruction 15-bit table read instruction Up to 1ms instruction cycle with 4MHz system clock 63...