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