PCA8530DUGSLASHDAZ datasheet(54/103 Pages) NXP

54 / 103 page

PCA8530

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Product data sheet

Rev. 2 — 25 September 2014

54 of 103

NXP Semiconductors

PCA8530

Automotive 102 x 4 Chip-On-Glass LCD segment driver

In the 1:2 multiplex mode, the bank-select command may request the contents of bank 2

to be selected for display instead of the contents of bank 0. 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 31 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).

8.14.3.1

Input-bank-select

The Input-bank-select command (see Table 26 on page 24) loads display data into the

display RAM in accordance with the selected LCD drive configuration (see Figure 29 on

page 53).

• In static drive mode, an individual content can be stored in each RAM bank (bank 0 to

bank 3 which corresponds to row 0 and row 3).

• In 1:2 multiplex drive mode, individual content for RAM bank 0 (row 0 and row 1),

RAM bank 2 (row 2 and row 3) can be stored.

The Input-bank-select command works independently to the Output-bank-select

command.

8.14.3.2

Output-bank-select

The Output-bank-select command (see Table 27 on page 25) selects the display RAM

transferring it to the display register in accordance with the selected LCD drive

configuration (see Figure 29 on page 53).

Fig 30. Bank selection in multiplex drive mode 1:2

Fig 31. Example of the Bank-select command with multiplex drive mode 1:2

PCA8530DUG/DAZ Datasheet(PDF) 54 Page - NXP Semiconductors