LC66354C

CMOS LSI No. 5484 LC66354C, 66356C, 66358C Four-Bit Single-Chip Microcontrollers with 4, 6, and 8 KB of On-Chip ROM Preliminary Overview The LC66354C, LC66356C, and LC66358C are 4-bit CMOS microcontrollers that integrate on a single chip all the functions required in a system controller, including ROM, RAM, I/O ports, a serial interface, comparator inputs, three-value inputs, timers, and interrupt functions. These three microcontrollers are available in a 42-pin package. These products differ from the earlier LC66358A Series and LC66358B Series in the power-supply voltage range, the operating speed, and other points. Evaluation LSIs — LC66599 (evaluation chip) + EVA85/800-TB6630X — LC66E308 (on-chip EPROM microcontroller) used together. Package Dimensions unit: mm 3025B-DIP42S [LC66354C/66356C/66358C] 42 22 Features and Functions 15.24 On-chip ROM capacities of 4, 6, and 8 kilobytes, and an on-chip RAM capacity of 512 × 4 bits. Fully supports the LC66000 Series common instruction set (128 instructions). I/O ports: 36 pins 8-bit serial interface: two circuits (can be connected in cascade to form a 16-bit interface) Instruction cycle time: 0.92 to 10 µs (at 2.5 to 5.5 V) — For the earlier LC66358A Series: 1.96 to 10 µs (at 3.0 to 5.5 V) and 3.92 to 10 µs (at 2.2 to 5.5 V) — For the earlier LC66358B Series: 0.92 to 10 µs (at 3.0 to 5.5 V) Powerful timer functions and prescalers — Time limit timer, event counter, pulse width measurement, and square wave output ...