uPD75108G Integrated Circuit

The NEC uPD75108G is an 8-bit CMOS microcontroller belonging to the 75X family, commonly used in embedded and consumer control applications (e.g. remote controls, home appliances).

Here are the main technical specifications:

• Architecture: 8-bit CPU (proprietary NEC 75X architecture).
• ROM Memory (Program): 8 KB (Kbytes) of internal ROM (or OTP depending on the specific version).
• RAM Memory (Data): 512 bytes.
• Supply voltage: Typically 2.7V – 5.5V.
• Clock frequency: Up to 4.19 MHz (or higher depending on the model/oscillator).
• I/O Ports (Input/Output): Up to approximately 40 programmable I/O pins (varies based on package).
• Timers/Counters:
  • 8-bit multi-function timer.
  • Integrated watchdog timer.
• Communication interfaces: Support for serial interfaces (SIO).
• A/D Converter: Integrated ADC (typically 8-bit, multi-channel, present on many variants of the 75108 series).
• Package: QFP (Quad Flat Package) or similar surface-mount (SMD) variants, indicated by the letter "G" in the code.
• Power consumption: Low-power modes (Power-down / Standby) typical of CMOS devices for battery-powered applications.