LC662508A

Ordering number : EN5997 CMOS IC LC662508A, 662512A, 662516A Four-Bit Single-Chip Microcontrollers with 8, 12, and 16 KB of On-Chip ROM Overview The LC662516A, LC662512A, and LC662508A are 4-bit CMOS microcontrollers that integrate on a single chip all the functions required in a special-purpose telephone controller, including ROM, RAM, I/O ports, a serial interface, a DTMF generator, timers, and interrupt functions. These microcontrollers are available in a 64-pin package. Features and Functions On-chip ROM capacities of 8, 12, and 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: 58 pins DTMF generator This microcontroller incorporates a circuit that can generate two sine wave outputs, DTMF output, or a melody output for software applications. 8-bit serial interface: Two-wire interface (16-bit data length. Supports cascade connection.) Instruction cycle time: 0.95 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 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 11 interrupt factors and 8 interrupt vector locations. — External interrupts: 3 factors/3 vector locations — Internal interrupts: 8 factors/5 vecto...