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ST7522 Datasheet(PDF) 8 Page - Sitronix Technology Co., Ltd.

Part # ST7522
Description  17 x 96 Dot Matrix LCD Controller/Driver
Download  45 Pages
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Manufacturer  SITRONIX [Sitronix Technology Co., Ltd.]
Direct Link  http://www.sitronix.com.tw
Logo SITRONIX - Sitronix Technology Co., Ltd.

ST7522 Datasheet(HTML) 8 Page - Sitronix Technology Co., Ltd.

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ST7522
Ver 1.0c
8/45
2002/07/10
D
DE
ES
SC
CR
RIIP
PT
TIIO
ON
N O
OF
F F
FU
UN
NC
CT
TIIO
ON
NS
S
The MPU Interface
Selecting the Interface Type
With the ST7522 Series chips, data transfers are done
through an 8-bit bi-directional data bus (D7 to D0) or through
a serial data input (SI). Through selecting the P/S terminal
polarity to the “H” or “L” it is possible to select either parallel
data input or serial data input as shown in Table 1.
Table 1
P/S
CS1
CS2
A0
RD
WR
C86
D7
D6
D5~D0
H: Parallel Input
CS1
CS2
A0
RD
WR
C86
D7
D6
D5~D0
L: Serial Input
CS1
CS2
A0
High level High level High level
SI
SCL
High level
The Parallel Interface
When the parallel interface has been selected (P/S =“H”),
then it is possible to connect directly to either an
8080-system MPU or a 6800 Series MPU (as shown in Table
2) by selecting the C86 terminal to either “H” or to “L”.
Table 2
C86
CS1
CS2
A0
RD
WR
D7~D0
H: 6800 Series MPU Bus
CS1
CS2
A0
E
R/W
D7~D0
L: 8080 MPU Bus
CS1
CS2
A0
RD
WR
D7~D0
Moreover, data bus signals are recognized by a combination
of A0, RD
(E), WR
(R/W) signals, as show in Table 3.
Table 3
Shared
6800 Series
8080 Series
A0
R/W
RD
WR
Function
1
1
0
1
Reads the display data
1
0
1
0
Writes the display data
0
1
0
1
Status read
0
0
1
0
Write control data (command)


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