The µPD753108 is one of the 75XL Series 4-bit single-chip microcontroller chips and has a data processing capability comparable to that of an 8-bit microcontroller.
The existing 75X Series containing an LCD controller/driver supplies an 80-pin package.
The µPD753108 supplies a 64-pin package (12 x 12 mm), which is suitable for small-scale systems.
It features expanded CPU functions and can provide high-speed operation at a low supply voltage of 1.8 V compared with the existing µPD75308B.

FEATUREs
• Low voltage operation: VDD = 1.8 to 5.5 V
   • Can be driven by two 1.5-V batteries
• On-chip memory
   • Program memory (ROM):
      4096 x 8 bits (µPD753104)
      6144 x 8 bits (µPD753106)
      8192 x 8 bits (µPD753108)
   • Data memory (RAM):
      512 x 4 bits
• Capable of high-speed operation and variable instruction execution time for power saving
   • 0.95, 1.91, 3.81, 15.3 µs (@ 4.19 MHz with main system clock)
   • 0.67, 1.33, 2.67, 10.7 µs (@ 6.0 MHz with main system clock)
   • 122 µs (@ 32.768 kHz with subsystem clock)
• Internal programmable LCD controller/driver
• Small package:
   64-pin plastic QFP (12 x 12 mm, 0.65-mm pitch)
• One-time PROM version: µPD75P3116

APPLICATION
  Remote controllers, cameras, hemadynamometers, electronic scale, gas meters, etc.