pcf8812 NXP Semiconductors, pcf8812 Datasheet - Page 9

• Manufacturer Part Number: pcf8812
• Description: 65 X 102 Pixels Matrix Lcd Driver
• Manufacturer: NXP Semiconductors

Philips Semiconductors
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
addressed by the address pointer. The address ranges
are: X0 to X101 (110 0101b) and Y0 to Y8 (1000b).
Addresses outside of these ranges are not allowed. In
vertical addressing mode (bit V = 1) the Y address
increments after each byte (see Fig.6). After the last
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2004 Feb 23
handbook, full pagewidth
handbook, full pagewidth
65
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).
0
1
2
3
4
5
6
7
8
0
102 bits. The columns are
10
9
0
Fig.4 RAM format addressing.
X address
9
X address
Y address (Y8) Y8 wraps around to Y0 and X increments
to address the next column. In horizontal addressing mode
(bit V = 0) the X address increments after each byte (see
Fig.5). After the last X address (X101) X wraps around
to X0 and Y increments to address the next row. After the
very last address (X101, Y8) the address pointers wrap
around to address X0, Y0.
Y address
917
101
Y address
101
0
8
MGS397
Product specification
MGT638
PCF8812
0
8