SSD1858 Solomon Systech, SSD1858 Datasheet - Page 38

• Manufacturer Part Number: SSD1858
• Description: LCD Segment / Common Driver
• Manufacturer: Solomon Systech

www.DataSheet4U.com
33
SSD1858
8.31 Enable External Oscillator Input
This command enables the external clock input from CL pin and expected external square wave
is 726kHz.
OTP Example program
Find the OTP offset:
1.
2.
3.
4.
5.
6.
OTP programming:
7.
8.
9.
10. COMMAND(0X82)
11. COMMAND(0X83)
12. Wait at least 2 seconds for programming wait time.
13. Hardware reset by sending an active low reset pulse to RES# pin
14. Verify the result:
15. After OTP programming, procedure 2 to 5 are repeated for inspection of the contrast on
Hardware reset by sending an active low reset pulse to RES# pin
COMMAND(0XAB)
COMMAND(0X2F)
COMMAND(0X48)
COMMAND(0X40)
COMMAND(0X55)
COMMAND(0X81)
COMMAND(0X2D)
COMMAND(0X24)
\\ Set target display contents
COMMAND(0XB0)
COMMAND(0x00)
COMMAND(0X10)
DATA(…)
COMMAND(0XAF)
OTP offset calculation… target OTP offset value is +3
Hardware reset by sending an active low reset pulse to RES# pin
COMMAND(0XAB)
Connect an external Vout (16.5V-17.5V)
COMMAND(0X13)
the panel
Rev 1.1
09/2002
\\ 0001 X
\\Enable oscillator
\\ Turn on the internal voltage booster, internal regulator and
output op-amp buffer; Select booster level
\\ Set Duty ratio
\\ 64Mux
\\ Set Biasing ratio (1/9 BIAS)
\\ Set target gain and contrast.
\\ Contrast = 45
\\ Gain = 6.3
\\ Set page address
\\ Set lower nibble column address
\\ Set higher nibble column address
\\ Write test patterns to GDDRAM
\\ Set Display On
\\ Enable Oscillator
\\ Set OTP offset value to +3 (0011)
\\ Send the OTP programming command.
3
X
2
X
1
X
0
, where X
3
X
2
X
1
X
0
is the OTP offset value
SOLOMON