SSD1859 Solomon Systech, SSD1859 Datasheet - Page 30

• Manufacturer Part Number: SSD1859
• Description: 128 x 80 STN LCD Segment / Common 4 G/S Drive
• Manufacturer: Solomon Systech

Set Display Data Length
This two-byte command only valid when 3-wire SPI configuration is set by H/W input (PS0=PS1=L). The
second 8-bit is used to indicate that a specified number display data byte (1-256) are to be transmitted.
Next byte after the display data string is handled as a command.
Set Gray Scale Mode (White/Light Gray/Dark Gray/Black)
Command 88(hex) to 8F(hex) are used to specify the four gray levels’ pulse width at the four possible
frames. The four gray levels are called white, light gray, dark gray and black. Each level is defined by 4
registers for 4 consecutive frames. For example, WA is a 4-bit register to define the pulse width of the
1
registers.
For 4 FRC,
For 3 FRC,
Set PWM and FRC
This command selects the number of frames in frame rate control, or the number of levels in the pulse
width modulation.
Set Test Mode
This command forces the driver chip into its test mode for internal testing of the chip. Under normal
operation, user should NOT use this command.
Status Register Read
This command is issued by setting
interface waveform, P.32-35). It allows the MCU to monitor the internal status of the chip. No status
read is provided for serial mode.
EXTENDED COMMANDS
These commands are used, in addition to basic commands, to trigger the enhanced features designed
for the chip. These features are on top of general ones.
Set Temperature Coefficient (TC) Value
This command is to set 1 out of 2 different temperature coefficients in order to match various liquid
crystal temperature grades.
Select Oscillator Source
This command enables the external clock input from CL pin.
Solomon Systech
st
1
1
frame in White mode. WB is a register for 2
st
st
Byte
0
0
1
1
Byte
0
0
1
1
Memory Content
Memory Content
2
2
nd
nd
0
1
0
1
0
1
0
1
Byte
Byte
Gray Mode
Gray Mode
Light Gray
Dark Gray
Light Gray
Dark Gray
White
White
Black
Black
D/ C
Low during a data read (refer to Figure 10 to 13 of parallel
nd
frame in White mode etc. Each command specifies two
WA
WA
DA
BA
DA
BA
LA
LA
1
1
st
st
Dec 2003
WB
WB
2
DB
2
DB
BB
BB
LB
LB
nd
nd
FRAME
FRAME
P 30/48 Rev 1.0
WC
WC
DC
BC
DC
BC
LC
3
LC
3
rd
rd
4
www.DataSheet4U.com
th
WD (XX)
DC (XX)
BC (XX)
LD (XX)
(No use)
WD
DD
BD
LD
4
SSD1859
th