(Hong Kong)
Product Summary
The ay0438-i/l001 is a CMOS integrated device that drives a liquid crystal display, usually under microprocessor control. The part acts as a smart peripheral that drives up to 32 LCD segments. It needs only three control lines due to its serial input construction. The ay0438-i/l001 latches the data to be displayed and relieves the microprocessor from the task of generating the required waveforms. It can drive any standard or custom parallel drive LCD display, whether it be field effect or dynamic scattering; 7-, 9-, 14- or 16-segment characters; decimals; leading + or -; or special symbols. The ay0438-i/l001 can be cascaded. The AC frequency of the LCD waveforms can either be supplied by the user or generated by attaching a capacitor to the LCD input, which controls the frequency of an internal oscillator. The ay0438-i/l001 is available in 44-lead PLCC packages. Unpackaged dice are also available.
Parametrics
ay0438-i/l001 absolute maximum ratings: (1)Temperature Range: 40℃ to +85℃; (2)VDD: -0.3V to +12V; (3)Inputs (CLK, Data In, Load): VCC to VDD +0.3V; (4)LCDΦ Input: -0.3V to VDD +0.3V; (5)Power Dissipation: 250 mW; (6)Storage Temperature: -65℃ to +125℃; (7)Operating Temperature Industrial: -40℃ to +85℃
Features
ay0438-i/l001 features: (1)Drives up to 32 LCD segments of arbitrary configuration; (2)CMOS process for: wide supply voltage range, low- power operation, high-noise immunity, wide temperature range; (3)CMOS and TTL-compatible inputs; (4)Electrostatic discharge protection on all pins; (5)Cascadable; (6)On-chip oscillator; (7)Requires only three control lines.
Diagrams
