The µPD750108 is one of the 75XL series 4-bit single-chip microcontrollers, which provide data processing capability equal to that of an 8-bit microcontroller. The µPD750108 is produced by replacing the main system clock oscillator of the µPD750008 with an RC oscillator, enabling operation at a relatively low voltage of 1.8 V. In addition, it is best suited to applications using batteries. The µPD750108(A) has a higher reliability than the µPD750108. A built-in one-time PROM product, µPD75P0116, is also available. It is suitable for small-scale production and evaluation of application systems.

FEATURES
• Built-in RC oscillator
• Enables the immediate start of processing after the
release of standby mode
• Capable of low-voltage operation: VDD = 1.8 to 5.5 V
• Internal memory
   Program memory (ROM)
     : 4,096 × 8 bits (µPD750104 and µPD750104(A))
     : 6,144 × 8 bits (µPD750106 and µPD750106(A))
     : 8,192 × 8 bits (µPD750108 and µPD750108(A))
   Data memory (RAM)
    : 512 × 4 bits
• Function for specifying the instruction execution time (useful for saving power)
   4 µs, 8 µs, 16 µs, 64 µs (when operating at 1.0 MHz)
   2 µs, 4 µs, 8 µs, 32 µs (when operating at 2.0 MHz)
   122 µs (when operating at 32.768 kHz)
• Enhanced timer function (4 channels)
• Can be easily substituted for the µPD750008 because this product succeeds to the functions and instructions of the µPD750008.

APPLICATIONS
• µPD750104, µPD750106, and µPD750108 Cameras, meters, and pagers
• µPD750104(A), µPD750106(A), and µPD750108(A) Electrical equipment for automobiles