Overview
The LC66P5316 is an on-chip OTP PROM version of the LC6653XX Series CMOS 4-bit single-chip microcontrollers. The LC66P5316 is appropriate for program development and product evaluation since it provides identical functionality and pin compatibility with the LC665316A.

Features and Functions
• On-chip OTP ROM capacity of 16 kilobytes, and an on-chip RAM capacity of 512 × 4 bits.
• Fully supports the LC66000 Series common instruction
   set (128 instructions).
• I/O ports: 42 pins
• A sub-oscillator circuit can be used (option)
   This circuit allows power dissipation to be reduced by
   operating at lower speeds.
• 8-bit serial interface: two circuits (can be connected in
   cascade to form a 16-bit interface)
• Instruction cycle time: 0.95 to 10 µs (at 4.0 to 5.5 V)
• Powerful timer functions and prescalers
   — Time limit timer, event counter, pulse width
      measurement, and square wave output using a 12-bit
      timer.
   — Time limit timer, event counter, PWM output, and
      square wave output using an 8-bit timer.
   — Time base function using a 12-bit prescaler
• Powerful interrupt system with 8 interrupt factors and 8
   interrupt vector locations.
   — External interrupts: 3 factors/3 vector locations
   — Internal interrupts: 5 factors/5 vector locations
• Flexible I/O functions
   16-value comparator inputs, 20-mA drive outputs,
   inverter circuits, pull-up and open-drain circuits
   selectable as options.
• Optional runaway detection function (watchdog timer)
• 8-bit I/O functions
• Power saving functions using halt and hold modes.
• Packages: DIP48S, QIP48E (QFP48E)
• Evaluation LSIs: LC66599 (evaluation chip) +
   EVA800/850-TB662YXX2