Datasheet > PCF8531U2DA

PCF8531U2DA

更新时间： 2024-11-10 10:16:47

品牌	Logo	应用领域
恩智浦 - NXP		驱动器控制器
页数	文件大小	规格书
51页	383K
描述
34 x 128 pixel matrix driver Single-chip LCD controller and driver

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数据手册

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PCF8531U2DA 数据手册

PCF8531

34 x 128 pixel matrix driver

Rev. 6 — 16 May 2011

Product data sheet

1. General description

The PCF8531 is a low-power CMOS¹LCD row and column driver, designed to drive dot

matrix graphic displays at multiplex rates of 1:17, 1:26, and 1:34. Furthermore, it can drive

up to 128 icons. All necessary functions for the display are provided in a single chip,

including on-chip generation of V_LCDand the LCD bias voltages, resulting in a minimum of

external components and low power consumption. The PCF8531 is compatible with most

microcontrollers and communicates via a two-line bidirectional I²C-bus. All inputs are

CMOS compatible.

Remark: The icon mode is used to reduce current consumption. When only icons are

displayed, a much lower operating voltage (V_LCD) can be used and the switching

frequency of the LCD outputs is reduced. In most applications it is possible to use V_DDas

V_LCD

2. Features and benefits

Single-chip LCD controller and driver

34 row and 128 column outputs

Display data RAM 34 × 128 bits

128 icons (last row is used for icons)

Fast-mode I²C-bus interface (400 kbit/s)

Software selectable multiplex rates: 1:17, 1:26, and 1:34

Icon mode with multiplex rate 1:2:

Featuring reduced current consumption while displaying icons only

On-chip:

Generation of V_LCD(external supply also possible)

Selectable linear temperature compensation

Oscillator requires no external components (external clock also possible)

Generation of intermediate LCD bias voltages

Power-On Reset (POR)

No external components required

Software selectable bias configuration

Logic supply voltage range V_DD1to V_SS1: 1.8 V to 5.5 V

Supply voltage range for on-chip voltage generator V_DD2and V_DD3to V_SS1and V_SS2

2.5 V to 4.5 V

Display supply voltage range V_LCDto V_SS

Normal mode: 4 V to 9 V

1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 19.

12 3 4 5 6 7...51

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