PCA8576FUGSLASH2DASLASHQKP datasheet(15/54 Pages) NXP

15 / 54 page

PCA8576F

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Product data sheet

Rev. 3 — 3 December 2014

15 of 54

NXP Semiconductors

PCA8576F

Automotive 40 × 4 LCD driver

In the static drive mode, the bank-select command may request the contents of row 2 to

be selected for display instead of the contents of row 0. In the 1:2 multiplex mode, the

contents of rows 2 and 3 may be selected instead of rows 0 and 1. This gives the

provision for preparing display information in an alternative bank and to be able to switch

to it once it is assembled.

In Figure 11 an example is shown for 1:2 multiplex drive mode where the displayed data is

read from the first two rows of the memory (bank 0), while the transmitted data is stored in

the second two rows of the memory (bank 1).

7.3.8.2

Output bank selector

The output bank selector (see Table 10) selects one of the four rows per display RAM

address for transfer to the display register. The actual row selected depends on the

selected LCD drive mode in operation and on the instant in the multiplex sequence.

• In 1:4 multiplex mode, all RAM addresses of row 0 are selected, these are followed by

the contents of row 1, 2, and then 3

• In 1:3 multiplex mode, rows 0, 1, and 2 are selected sequentially

• In 1:2 multiplex mode, rows 0 and 1 are selected

• In static mode, row 0 is selected

7.3.8.3

Input bank selector

The input bank selector loads display data into the display RAM in accordance with the

selected LCD drive configuration. Display data can be loaded in row 2 in static drive mode

or in rows 2 and 3 in 1:2 multiplex drive mode by using the bank-select command (see

Fig 10. Bank selection

Fig 11. Example of the Bank-select command with multiplex drive mode 1:2

PCA8576FUG/2DA/QKP Datasheet(PDF) 15 Page - NXP Semiconductors