PCF8534A

The PCF8534A is designed as one kind of universal LCD drive device that generates PCF8534A signals for any static or multiplexed LCD containing up to four backplanes and up to 160 segments. And PCF8534A is compatible with most microprocessors or microcontrollers and communicates via a two-line bidirectional I2C-bus. Communication overheads are minimized by a display RAM with auto-incremental addressing, by hardware subaddressing and by display memory switching (static and duplex drive modes).

Features of the PCF8534A are:(1)Wide logic power supply range: from 1.8 V to 5.5 V; (2)LCD and logic supplies may be separated; (3)Low power consumption; (4)400 kHz I2C-bus interface; (5)Compatible with any microprocessors or microcontrollers; (6)No external components; (7)Display memory bank switching in static and duplex drive modes; (8)Auto-incremented display data loading; (9)Versatile blinking modes; (10)Silicon gate CMOS process; (11)Internal LCD bias generation with voltage follower buffers; (12)Cascading supported for larger applications; (13)60 x 4-bit display data storage RAM.

The absolute maximum ratings of the PCF8534A can be summarized as:(1)supply voltage: -0.5 to +6.5 V;(2)supply current: -50 to +50 mA;(3)LCD supply voltage: -0.5 to +7.5 V;(4)LCD supply current: -50 to +50 mA;(5)input voltage: -0.5 to +6.5 V;(6)input current: -10 to +10 mA;(7)output voltage: -0.5 to +7.5 V;(8)output current: -10 to +10 mA;(9)latch-up current: 200 mA;(10)storage temperature: -65 to +150 °C;(11)operating temperature: -40 to +85 °C;(12)total power dissipation: 400 mW;(13)power dissipation per output: 100 mW. If you want to know more information about it, please download the datasheet in www.seekic.com or www.chinaicmart.com .