ST7577 Sitronix Technology, ST7577 Datasheet - Page 11

• Manufacturer Part Number: ST7577
• Description: Dot Matrix LCD Controller/Driver
• Manufacturer: Sitronix Technology

ST7577
l
l
l
Recommend I/O pins ITO Resistance Limitation
Notes:
1.
Ver 1.0a
CONFIGURATION PIN
TEST PIN
VRS, T[8:0]
V
V
V
V0 (V0I + V0O + V0S), XV0 (XV0I + XV0O + XV0S), VG (VGI + VGO + VGS), VM
CSB, A0, /RD, /WR, D[7:0]
PS[2:0], OSC
RESB
SS
DD
DD2
If using internal clock, OSC is connect to V
If using external clock, the ITO resistance of OSC should be kept lower than 500Ω to keep the clock signal quality.
ST7577 has 2 sets of interface port (Port-A & Port-B). These two ports can be selected by “MODE” pin.
Port-A and Port-B are identical (CSB, A0, /RW, /RD, D7~D0) except RESB pin.
The unused pins should be left floating.
The Microprocessor Interface pins should not be left floating under any operation mode.
MODE
T0~T9
MLB
DTY
PM
*1
, MLB, DTY, MODE, T9
Test
I
I
I
I
Data format (MSB on top or LSB on top).
MLB=”H”, MSB on top (D7 on top);
MLB=”L”, LSB on top (D0 on top).
Duty selection pin. Please refer to Page11 for detail output Map.
DTY=”L”, 1/39 duty;
DTY=”H”, 1/12 duty.
Set power mode. This pin will change the V0 (Vop) formula parameter.
V0=( a + V
PM=”L”, a=3.0V, b=0.03V;
PM=”H”, a=4.5V, b=0.03V.
Select MPU interface Port-A (left side) or Port-B (right side).
MODE=”L”, use Port-A (Port-B should be floating).
MODE=”H”, use Port-B (Port-A should be floating).
T0~T8 left them open.
T9 must connect to V
Pin Name
OP[6:0]
DD
and the limitation of ITO resistance will be “No Limitation”.
x b )
DD
11/48
.
Floating
<100Ω
<100Ω
<100Ω
<500Ω
<1KΩ
<5KΩ
<10KΩ
ITO Resistance
www.DataSheet4U.com
2008/02/14
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