The µPD754302, 754304, and 75P4308 are 4-bit single-chip microcontrollers in the NEC’s 75XL series, a successor to the 75X series that boasts a wealth of variations. These three devices are called the µPD754304 subseries as a general term. The 75XL Series is the successor to the 75X Series CPUs and attains a wide range of operating voltages and high-speed operation. Not only is it upward compatible with previous products, but is suited to applications that use batteries.

The features of the µPD754308 are as follows:
• Low-voltage operation: VDD = 1.8 to 5.5 V
• Variable instruction execution time useful for high-speed operation and power saving
0.95 µs, 1.91 µs, 3.81 µs, 15.3 µs (at 4.19 MHz)
0.67 µs, 1.33 µs, 2.67 µs, 10.7 µs (at 6.0 MHz)
• Powerful timer function: 3 channels
• Small package (36-pin plastic shrink SOP (300 mil, 0.8 mm pitch)