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PCF8576D fiches techniques PDF

NXP Semiconductors - Universal LCD driver

Numéro de référence PCF8576D
Description Universal LCD driver
Fabricant NXP Semiconductors 
Logo NXP Semiconductors 





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PCF8576D fiche technique
PCF8576D
Universal LCD driver for low multiplex rates
Rev. 10 — 14 February 2011
Product data sheet
1. General description
The PCF8576D is a peripheral device which interfaces to almost any Liquid Crystal
Display (LCD) with low multiplex rates. It generates the drive signals for any static or
multiplexed LCD containing up to four backplanes and up to 40 segments. It can be easily
cascaded for larger LCD applications. The PCF8576D is compatible with most
microcontrollers and communicates via the two-line bidirectional I2C-bus. Communication
overheads are minimized by a display RAM with auto-incremented addressing, by
hardware subaddressing and by display memory switching (static and duplex drive
modes).
2. Features and benefits
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„ AEC-Q100 compliant (PCF8576DT/S400/2) for automotive applications
„ Single chip LCD controller and driver
„ Selectable backplane drive configuration: static or 2, 3, 4 backplane multiplexing
„ Selectable display bias configuration: static, 12 or 13
„ Internal LCD bias generation with voltage-follower buffers
„ 40 segment drives:
‹ Up to 20 7-segment numeric characters
‹ Up to 10 14-segment alphanumeric characters
‹ Any graphics of up to 160 elements
„ 40 × 4-bit RAM for display data storage
„ Auto-incremented display data loading across device subaddress boundaries
„ Display memory bank switching in static and duplex drive modes
„ Versatile blinking modes
„ Independent supplies possible for LCD and logic voltages
„ Wide power supply range: from 1.8 V to 5.5 V
„ Wide logic LCD supply range:
‹ From 2.5 V for low-threshold LCDs
‹ Up to 6.5 V for high-threshold twisted nematic LCDs
„ Low power consumption
„ 400 kHz I2C-bus interface
„ May be cascaded for large LCD applications (up to 2560 elements possible)
„ No external components required
„ Compatible with chip-on-glass and chip-on-board technology
„ Manufactured in silicon gate CMOS process

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