ST7567
5. PIN DESCRIPTION
LCD Driver Output Pins
Pin Name
Type
LCD segment driver outputs.
The display data and the frame control the output voltage.
Display data
SEG0 to SEG131
O
H
H
L
L
Frame
+
-
+
-
Segment Driver Output Voltage
Normal Display
VG
VSS
VSS
VG
VSS
Inverse Display
VSS
VG
VG
VSS
VSS
132
Description
No. of Pins
Display OFF, Power Save
LCD common driver outputs.
The internal scanning signal and the frame control the output voltage.
Scan signal
COM0 to COM63
O
H
H
L
L
Frame
+
-
+
-
Common Driver Output Voltage
Normal Display
Inverse Display
XV0
V0
VM
VM
VSS
64
Display OFF, Power Save
COMS1, COMS2
(COMS)
LCD common driver outputs for icons.
O
The output signals of these two pins are the same.
When icon feature is not used, these pins should be left open.
2
Microprocessor Interface Pins
Pin Name
RSTB
CSB
Type
I
I
Description
Hardware reset input pin. When RSTB is “L”, internal initialization is executed
and the internal registers will be initialized.
Chip select input pin. Interface access is enabled when CSB is “L”.
When CSB is non-active (CSB=“H”), D[7:0] pins are high impedance.
It determines whether the access is related to data or command.
A0
I
A0=“H” : Indicates that signals on D[7:0] are display data.
A0=“L” : Indicates that signals on D[7:0] are command.
Read/Write execution control pin. When PSB is “H”,
C86
H
RWR
I
L
MPU Type
6800
series
8080
series
RWR
R/W
R/W=“H”: read.
R/W=“L”: write.
Write enable input pin.
/WR
Signals on D[7:0] will be latched at the rising
edge of /WR signal.
1
Description
Read/Write control input pin.
1
No. of Pins
1
1
RWR is not used in serial interface and should fix to “H” by VDD1 or VDDH.
Ver 1.4b
8/49
2009/02/04
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
