Holtek Semiconductor HT48RA5
the HT48 MCU Series - HA0018E Controlling the HT1621 LCD Controller with the HT48 MCU Series - HA0041E Using the HT48CA0 to Generate the HT6221 Output Signals - HA0075E MCU Reset and Oscillator Circuits Application Note - HA0076E HT48RAx/HT48CAx Software Application Note - HA0082E HT48xA0-1 and HT48xA0-2 Power-on Reset Timing Features · Operating voltage: 2.0V~5.5V · 23 bidirectional I/O lines (max.) · 1 interrupt input shared with an I/O line · 8-bit programmable timer/event counter with · HALT function and wake-up feature reduce power consumption · 8-level subroutine nesting · Up to 1ms... The data ROM can be used to store remote control codes. The mask version HT48CA5 is fully pin and functionally compatible with the OTP version HT48RA5 device.