ST7522 Sitronix, ST7522 Datasheet - Page 8

• Manufacturer Part Number: ST7522
• Description: 17 x 96 Dot Matrix LCD Controller
• Manufacturer: Sitronix

ST7522
D
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
The Parallel Interface
When the parallel interface has been selected (P/S =“H”),
then it is possible to connect directly to either an
Moreover, data bus signals are recognized by a combination
of A0, RD
Ver 1.0c
D
E
E
H: Parallel Input
L: Serial Input
S
S
―
C
C
P/S
(E), WR
R
R
I
I
―
P
P
T
T
H: 6800 Series MPU Bus
L: 8080 MPU Bus
(R/W) signals, as show in Table 3.
Shared
I
I
O
O
A0
1
1
0
0
N
―
―
―
N
CS1
CS1
CS1
O
O
C86
F
F
6800 Series
F
F
CS2
CS2
CS2
R/W
U
U
1
0
1
0
N
N
C
C
T
T
A0
A0
A0
―
CS1
―
CS1
―
CS1
I
I
O
O
N
N
―
RD
0
1
0
1
8080 Series
High level High level High level
S
S
Table 1
Table 2
Table 3
CS2
CS2
CS2
―
RD
―
RD
8/45
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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.
8080-system MPU or a 6800 Series MPU (as shown in Table
2) by selecting the C86 terminal to either “H” or to “L”.
WR
―
1
0
1
0
―
WR
―
WR
A0
A0
A0
Reads the display data
Writes the display data
Status read
Write control data (command)
―
―
RD
RD
E
C86
C86
Function
R/W
―
WR
―
WR
D7
D7
SI
D7~D0
D7~D0
D7~D0
SCL
D6
D6
High level
D5~D0
D5~D0
2002/07/10
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