■ GENERAL DESCRIPTION
The NJU3101 is the C-MOS 4-bit Single Chip Tiny Controller consisting of the 4-bit CPU Core, Input / Output Selectable I/O ports, Program ROM, Data RAM, and Oscillator Circuit (CR or Ceramic or Xtal). It is packaged in 16-pin package (DIP or DMP form). Therefore it provides a cost and space effective replacement with only few external components for control-logic circuit using standard logic ICs (i.e. 74HC) or other small controllers.
The NJU3101 is suitable for battery operated appliances because of low operating current, wide operating voltage range, and STANDBY function (HALT mode).

■ FEATURES
● Internal Program ROM 512 X 8 bits
● Internal Data RAM 16 X 4 bits
● Input / Output Port 10 lines
    (Input / Output direction of each PORT is selected by the mask option.)
● High Output Current terminal (2 lines)
    N-Channel FET Open Drain Type (IOL) 15mA at VDD=5V
● Instruction Set 58 instructions
● Subroutine Nesting 8 levels
● Pulse Edge Detector
    The rising or falling edge of a pulse is selected by the mask option.
● Instruction Executing Time 6/fOSC sec
● Operating Frequency Range 30kHz − 4MHz
● Internal Oscillator
    CR, or Ceramic, or Xtal oscillation and External clock input
● STANDBY function (HALT mode)
● Wide operating voltage range 2.4V − 5.5V
● C-MOS technology
● Package outline DIP16 / DMP16