GENERAL DESCRIPTION
The Z86318 is a member of the Z8® MCU family of CMOS microcontrollers. This device offers on-board pull-up and pull-down resistors (ROM mask-option programmable on a nibble basis), a scalable trip-point buffer to accommodate opto-transistor outputs, and high drive ports capable of up to 20 mA current sinking per pin (3 pins maximum).
   
FEATURES   
■ –40°C to +105°C Operating Temperature Range
■ Low-Power Consumption: 33 mW (Typical)
■ ROM Mask Options:
    – Permanent Watch-Dog Timer
    – ROM Protect
    – Low-Voltage Protection
    – Pull-Up/Pull-Down I/O Pins
        (Nibble Programmable)
    – Feedback Resistor on the On-Chip Oscillator
■ On-Chip Oscillator (Crystal, Ceramic Resonator,
    LC, or External Clock Drive)
■ Fast Instruction Pointer: 1.5 µs @ 4 MHz
■ ESD Protection Circuitry