ST7586S
LCD Driver Outputs
Name
Type
Description
LCD SEG-driver outputs.
The display data and the polar-signal (M) control the output voltage of SEG-driver.
Segment Driver Output Voltage
Display Data
M
Normal Display
Reverse Display
SEG0
to
H
H
L
H
L
VG
VSS
VSS
VG
VSS
VG
Output
SEG383
H
L
VG
L
VSS
VSS
Display OFF, Sleep-In mode
VSS
LCD COM-driver outputs.
The internal scanning data and the polar-signal (M) control the output voltage of COM-driver.
Scan data
M
H
L
Common Driver Output Voltage
COM0
to
H
H
L
XV0
V0
Output
COM159
H
L
VM
VM
VSS
L
Display OFF, Sleep-In mode
Microprocessor Interface
Name
Type
Description
Reset input pin. When RSTB is “L”, internal initialization procedure is executed.
These pins select interface operation mode.
RSTB
Input
IF3
H
IF2
H
IF1
L
MPU interface type
80 series 8-bit parallel
68 series 8-bit parallel
8-bit serial (4-Line)
IF[3:1]
Input
H
L
L
L
H
H
L
L
H
9-bit serial (3-Line)
Note: Refer to “Interface Selection” for detailed information.
Chip select input pin.
CSB
A0
Input
Input
CSB=“L”: This chip is selected and the MPU interface is active.
CSB=“H”: This chip is not selected and the MPU interface is disabled (D[7:0] are high impedance).
The function of this pin is different in parallel and serial interface.
ꢀ
In parallel interface: A0 is register selection input.
A0 = "H": inputs on data bus are display data;
A0 = "L": inputs on data bus are command.
ꢀ
In serial interface: this pad will be used as SCL (serial-clock) input
Read / Write execution control pin. (This pin is only used in parallel interface)
MPU Type
RWR
Description
Read / Write control input pin
6800-series
R/W
R/W = “H” : read
RWR
Input
R/W = “L” : write
Write enable clock input pin.
The data are latched at the rising edge of the /WR signal.
8080-series
/WR
This pin is not used in serial interfaces and should be connected to VDD1.
Ver-1.1a
13/63
2009/11/30
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
