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PCF8532 датащи(PDF) 22 Page - NXP Semiconductors

номер детали PCF8532
подробное описание детали  Universal LCD driver for low multiplex rates
PDF  44 Pages
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производитель  NXP [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8532 датащи(HTML) 22 Page - NXP Semiconductors

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PCF8532_1
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 1 — 10 February 2009
22 of 44
NXP Semiconductors
PCF8532
Universal LCD driver for low multiplex rates
7.17 Command decoder
The command decoder identifies command bytes that arrive on the I2C-bus. The
commands available to the PCF8532 are defined in Table 8.
Fig 15. I2C-bus protocol
EXAMPLES
a) transmit two bytes of RAM data
mgl752
S
A
0
S 0 1110
0
0
control byte
slave address
RAM/command byte
RAM DATA
M
S
B
L
S
B
A
A
P
R/W = 0
S
A
0
S 0 1110
0
0 1
0
A
A
A
P
RAM DATA
A
b) transmit two command bytes
COMMAND
S
A
0
S 0 1110
0
1 0
0
A
A
A
P
COMMAND
A
A
c) transmit one command byte and two RAM date bytes
COMMAND
S
A
0
S 0 1110
0
1 0
00
01
0
A
A
A
P
RAM DATA
A
RAM DATA
A
A
C
O
R
S
Fig 16. Format of control byte
Table 7.
Load-data-pointer command bit description
Bit
Symbol
Value
Description
7CO
continue bit
0
last control byte
1
control bytes continue
6RS
register selection
0
command register
1
data register
5 to 0
-
not relevant
mgl753
not relevant
CO
7
6
5
4
3
210
RS
MSB
LSB



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