The µPD754304 is one of the “75XL Series” 4-bit single-chip microcontrollers with data processing capability comparable to that of 8-bit microcontrollers. The µPD754303(A) has a higher reliability than the µPD754304. The microcontrollers in the 75XL Series have expanded CPU functions than those of the 75X Series and can operate at a voltage of as low as 1.8 V; therefore, they are ideal for battery-driven application systems. As the one-time PROM version of the µPD754304, the µPD75P4308 is ideal for evaluation of a system under development or for small-scale production of application systems.

FEATURES
• Low-voltage operation: VDD = 1.8 to 5.5 V
• Internal memory
Program memory (ROM):
2048 × 8 bits (µPD754302, 754302(A))
4096 × 8 bits (µPD754304, 754304(A))
Data memory (RAM): 256 × 4 bits
• Variable instruction execution time effective for high speed operation and power saving
0.95, 1.91, 3.81, or 15.3 µs (at 4.19 MHz)
0.67, 1.33, 2.67, or 10.7 µs (at 6.0 MHz)
• Internal serial interface (1 channel)
• Powerful timer function (3 channels)
• Inherits instruction set of existing 75X Series for easy replacement

APPLICATIONS
• µPD754302, 754302(A)
Cordless telephones, TVs, VCRs, audio systems, household appliances, office machines, etc.
• µPD754304, 754304(A)
Automotive appliance, etc.