PCF8811U/2DA/1 NXP [NXP Semiconductors], PCF8811U/2DA/1 Datasheet - Page 21

• Manufacturer Part Number: PCF8811U/2DA/1
• Description: 80 x 128 pixels matrix LCD driver
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
PCF8811_4
Product data sheet
Fig 6.
Sequence of writing data bytes into the RAM (basic command set)
MSB
MSB
LSB
LSB
8.1.2.1 Horizontal/vertical addressing
8.1.2 Extended command set
The Y address counter does not auto-increment in the basic command set. The counter
stops when a complete bank has been written to. In this case the Y address counter must
be set; for Y address, see
When only a part of the RAM is used, both X (X
The data order in the basic command set is as defined in
Two different address modes are possible with the extended command set: horizontal
address mode and vertical address mode.
In the horizontal address mode (V = 0) the X address increments after each byte. After the
last X address, X wraps around to 0 and Y increments to address the next row;
see
occur can be programmed. In
as 127, and the Y address is programmed as 9. With X
addresses can be programmed while the whole RAM is not being used.
In the vertical addressing mode (V = 1) the Y address increments after each byte. After
the last Y address (Y = 9), Y wraps around to 0 and X increments to address the next
column; see
In
programmed as 9. With X
the whole RAM is not being used.
After the very last address, the address pointers wrap around to address X = 0 and Y = 0
in both horizontal and vertical addressing modes.
Figure 8
Figure
0
7. The number of columns (last X address) after which the wrap around must
it can be seen that the X address is programmed as 127, and the Y address is
Figure
8. The last Y address, after which Y wraps to 0, can be programmed.
Rev. 04 — 27 June 2008
max
Table
and Y
Figure 7
10. To write the next bank, see
X address
Y address
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it can be seen that the X address is programmed
the X and Y addresses can be programmed while
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) and Y (Y
80 x 128 pixels matrix LCD driver
max
Figure
and Y
max
Figure
) addresses can be set.
6.
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X max
the X and Y
mgw735
PCF8811
6.
© NXP B.V. 2008. All rights reserved.
Y max
0
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