PCF8812U/2 PHILIPS [NXP Semiconductors], PCF8812U/2 Datasheet - Page 9

• Manufacturer Part Number: PCF8812U/2
• Description: 65 x 102 pixels matrix LCD driver
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
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Data is downloaded in bytes into the RAM matrix of the PCF8812 as indicated in Figs.3, 4, 5 and 6. The display RAM
has a matrix of 65
(1100101) and Y0 to Y8 (1000). Addresses outside of these ranges are not allowed. In vertical addressing mode (V = 1)
the Y address increments after each byte (see Fig.6). After the last Y address (Y = 8) Y wraps around to 0 and X
increments to address the next column. In horizontal addressing mode (V = 0) the X address increments after each byte
(see Fig.5). After the last X address (X = 101) X wraps around to 0 and Y increments to address the next row. After the
very last address (X = 101 and Y = 8) the address pointers wrap around to address (X = 0 and Y = 0).
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2000 Nov 22
handbook, full pagewidth
handbook, full pagewidth
65
ADDRESSING
Data structure
102 pixels matrix LCD driver
MSB
MSB
LSB
LSB
Fig.5 Sequence of writing data bytes into RAM with vertical addressing (V = 1).
102 bits. The columns are addressed by the address pointer. The address ranges are: X0 to X101
0
1
2
3
4
5
6
7
8
0
10
9
0
Fig.4 RAM format addressing.
X address
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X address
Y address
917
101
Y address
101
0
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MGS397
Product specification
MGT638
PCF8812
0
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