PCF8536AT datasheet(14/54 Pages) NXP

14 / 54 page

PCA85276

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Product data sheet

Rev. 3 — 12 November 2018

14 of 54

NXP Semiconductors

PCA85276

Automotive 40 x 4 LCD driver

There are two banks; bank 0 and bank 1. Figure 5 shows the location of these banks

relative to the RAM map. Input and output banks can be set independently from one

another with the Bank-select command (see Table 9 on page 7). Figure 6 shows the

concept.

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 7 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).

Fig 5.

RAM banks in static and multiplex driving mode 1:2

Fig 6.

Bank selection

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