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PCF8576C_10 Datasheet, PDF (1/57 Pages) NXP Semiconductors – Universal LCD driver for low multiplex rates | |||
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PCF8576C
Universal LCD driver for low multiplex rates
Rev. 10 â 22 July 2010
Product data sheet
1. General description
The PCF8576C is a peripheral device which interfaces to almost any Liquid Crystal
Display (LCD)1 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 and can easily
be cascaded for larger LCD applications. The PCF8576C 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-incremented addressing and by hardware subaddressing.
2. Features and benefits
 Single-chip LCD controller and driver
 40 segment drives:
 Up to twenty 7-segment alphanumeric characters
 Up to ten 14-segment alphanumeric characters
 Any graphics of up to 160 elements
 Versatile blinking modes
 No external components required (even in multiple device applications)
 Selectable backplane drive configuration: static, 2, 3, or 4 backplane multiplexing
 Selectable display bias configuration: static, 1â2, or 1â3
 Internal LCD bias generation with voltage-follower buffers
 40 à 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
 Wide logic LCD supply range:
 From 2 V for low-threshold LCDs
 Up to 6 V for guest-host LCDs and high-threshold twisted nematic LCDs
 Low power consumption
 May be cascaded for large LCD applications (up to 2560 segments possible)
 No external components
 Separate or combined LCD and logic supplies
 Optimized pinning for plane wiring in both and multiple PCF8576C applications
 Power-saving mode for extremely low power consumption in battery-operated and
telephone applications
1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 18.
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