PCF8545ATT datasheet(6/48 Pages) NXP

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PCE85176AUG

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Product data sheet

Rev. 1 — 12 January 2015

6 of 48

NXP Semiconductors

PCE85176AUG

4 × 40 LCD segment driver for Chip-On-Glass

7.1.3 Command: Initialize-RAM

7.1.4 Command: bank-select

The bank-select command controls where data is written to RAM and where it is displayed

from.

[1]

The bank-select command has no effect in 1:3 and 1:4 multiplex drive modes.

Table 11.

Initialize-RAM command bit allocation

Bit

Symbol

000

Table 12.

Initialize-RAM command bit description

See Section 7.3.1.

Bit

Symbol

Value

Description

0, 1

see Table 6

6 to 0

1100000

initializing the RAM access

Table 13.

Bank-select command bit allocation

Bit

Symbol

110

Table 14.

Bank-select command bit description

See Section 7.3.4.

Bit

Symbol

Value

Description

Static

1:2 multiplex[1]

0, 1

see Table 6

6 to 2

11110

fixed value

input bank selection; storage of arriving

display data

RAM row 0

RAM rows 0 and 1

RAM row 2

RAM rows 2 and 3

output bank selection; retrieval of LCD

display data

RAM row 0

RAM rows 0 and 1

RAM row 2

RAM rows 2 and 3

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