Datasheet > PCF8532_11

PCF8532_11

更新时间： 2024-09-21 10:16:47

品牌	Logo	应用领域
恩智浦 - NXP		驱动器
页数	文件大小	规格书
49页	350K
描述
Universal LCD driver for low multiplex rates

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PCF8532_11 数据手册

PCF8532

Universal LCD driver for low multiplex rates

Rev. 2 — 10 February 2011

Product data sheet

1. General description

The PCF8532 is a peripheral device which interfaces to almost any Liquid Crystal Display

(LCD)¹with low multiplex rates. It generates the drive signals for any static or multiplexed

LCD containing up to four backplanes and up to 160 segments and can easily be

cascaded for larger LCD applications. The PCF8532 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).

2. Features and benefits

Single-chip LCD controller and driver for up to 640 elements

Selectable backplane drive configuration: static or 2, 3 or 4 backplane multiplexing

160 segment drives:

Up to 80 7-segment numeric characters

Up to 42 14-segment alphanumeric characters

Any graphics of up to 640 elements

May be cascaded for large LCD applications (up to 2560 elements possible)

160 × 4-bit RAM for display data storage

Software programmable frame frequency in steps of 5 Hz in the range of 60 Hz to

90 Hz

Wide LCD supply range: from 1.8 V for low threshold LCDs and up to 8.0 V for

guest-host LCDs and high threshold (automobile) twisted nematic LCDs

Internal LCD bias generation with voltage-follower buffers

Selectable display bias configuration: static, ¹⁄₂or ¹⁄₃

Wide power supply range: from 1.8 V to 5.5 V

LCD and logic supplies may be separated

Low power consumption, typically: I_DD= 4 μA, I_DD(LCD)= 40 μA

400 kHz I²C-bus interface

Auto-incremental display data loading across device subaddress boundaries

Versatile blinking modes

Compatible with Chip-On-Glass (COG) technology

Two sets of backplane outputs for optimal COG configurations of the application

Display memory bank switching in static and duplex drive modes

No external components required

1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 15.

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