GENERAL DESCRIPTION
The Z86E30/E31/E40 8-Bit One-Time Programmable (OTP) Microcontrollers are members of Zilogs single-chip Z8® MCU family featuring enhanced wake-up circuitry, programmable Watch-Dog Timers, Low Noise EMI options, and easy hardware/software system expansion capability.

FEATURES
■ Standard Temperature (VCC = 3.5V to 5.5V)
■ Extended Temperature (VCC = 4.5V to 5.5V)
■ Available Packages:
    28-Pin DIP/SOIC/PLCC OTP (Z86E30/31 only)
    28-Pin DIP Window (Z86E30/31 only)
    40-Pin DIP OTP/Window (Z86E40 only)
    44-Pin PLCC/QFP OTP (Z86E40 only)
    44-Pin PLCC Window (Z86E40 only)
■ Software Enabled Watch-Dog Timer (WDT)
■ Push-Pull/Open-Drain Programmable on Port 0, Port 1, and Port 2
■ 24/32 Input/Output Lines
■ Auto Latches
■ Auto Power-On Reset (POR)
■ Programmable OTP Options:
    RC Oscillator
    EPROM Protect
    Auto Latch Disable
    Permanently Enabled WDT
    Crystal Oscillator Feedback Resistor Disable
    RAM Protect
■ Low-Power Consumption: 60 mW
■ Fast Instruction Pointer: 0.75 µs
■ Two Standby Modes: STOP and HALT
■ Digital Inputs CMOS Levels, Schmitt-Triggered
■ Software Programmable Low EMI Mode
■ Two Programmable 8-Bit Counter/Timers Each with a 6-Bit Programmable Prescaler
■ Six Vectored, Priority Interrupts from Six Different Sources
■ Two Comparators
■ On-Chip Oscillator that Accepts a Crystal, Ceramic Resonator, LC, RC, or External Clock Drive