PCF8545ATTSLASHA datasheet(30/72 Pages) NXP

номер детали	PCF8545ATT/A

подробное описание детали	Universal LCD driver for multiplex rates up to 1:8

PDF	72 Pages

Scroll/Zoom	100%

производитель	NXP [NXP Semiconductors]

домашняя страница	http://www.nxp.com

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PCF8545

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Product data sheet

Rev. 1 — 13 November 2013

30 of 72

NXP Semiconductors

PCF8545

Universal LCD driver for multiplex rates up to 1:8

Logic 1 in the RAM bit map indicates the on-state (Von(RMS)) of the corresponding LCD

element; similarly, logic 0 indicates the off-state (Voff(RMS)). For more information on

Von(RMS) and Voff(RMS), see Section 8.4.

There is a one-to-one correspondence between

• the bits in the RAM bitmap and the LCD elements,

• the RAM columns and the segment outputs,

• the RAM rows and the backplane outputs.

The display RAM bit map, Figure 19, shows row 0 to row 7 and column 0 to column 43.

Row 0 to row 7 correspond with the backplane outputs BP0 to BP7. Column 0 to column

43 correspond with the segment outputs S0 to S43. In multiplexed LCD applications, the

data of each row of the display RAM is time-multiplexed with the corresponding backplane

(row 0 with BP0, row 1 with BP1, and so on).

The display RAM bitmap shows the direct relationship between the display RAM column and the

segment outputs and between the bits in a RAM row and the backplane outputs.

Fig 19. Display RAM bitmap

PCF8545ATT/A датащи(PDF) 30 Page - NXP Semiconductors