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Description

The LC7234 is a single-chip microcontroller that incorporates a 0.5 to 150MHz phase-locked loop (PLL) and a liquid-crystal display (LCD) driver, making it ideal for digital tuners. It has a large number of input/output ports and a frequency measurement circuit.

The IC freatures on-chip RAM and ROM, a program mable high-speed divider, a 6-bit analog-to-digital converter and a low-voltage detection reset circuit. The LC7234 operates from a 5V supply and is available in 64-pin QIPs.

Features

1. 150 Mhz phase-locked loop

2. LCD driver

3. 6-bit analog-to-digital converter

4. PLL-unlocked flip-flop

5. Low-voltage detection reset circuit.

6. Programmable high-speed divider.

7. Single-word instructions.

8. Programmable watchdog interrupt address.