4-BIT SINGLE-CHIP MICROCONTROLLER

The µPD17120, 17121, 17132 and 17133 are 4-bit single-chip microcontrollers employing the 17K architecture and containing 8-bit timer (1 channel), 3-wire serial interface, and power-on/power-down reset circuit. The µPD17P132 and 17P133 are the one-time PROM version of the µPD17132 and 17133, respectively, and are suitable for program evaluation at system development and for small-scale production.
The following are features of the µPD17120 subseries.

• Comparator input (µPD17132, 17133, 17P132, 17P133 only)
  .Comparison function with external reference voltage (Vref)
  .Can be used as 4-bit A/D converter by using 15 types of internal reference voltage (1/16 to 15/16 VDD) depending on the software
• 3-wire serial interface: 1 channel
• Power-on/power-down reset circuit (reducing external circuits)
• µPD17P132 and 17P133 can operate in the same way as mask ROM version
  .VDD= 2.7 to 5.5 V

These features of the µPD17120 subseries are suitable for use as a controller or a sub-microcomputer device in the following application fields;

• Electric fan
• Hot plate
• Audio equipment
• Mouse
• Printer
• Plain paper copier