Holtek Semiconductor HT48RA0-2
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~3.6V · Ten bidirectional I/O lines · 4 Schmitt trigger input lines · One carrier output (1/2 or 1/3 duty) · On-chip crystal and RC oscillator · Watchdog Timer · 1K´14 program memory · 32´8 data RAM · HALT function and wake-up feature... The mask version HT48CA0-2 is fully pin and functionally compatible with the OTP version HT48RA0-2 device.