DD-DB1-AL202C-GW Matrix Orbital, DD-DB1-AL202C-GW Datasheet - Page 46

• Manufacturer Part Number: DD-DB1-AL202C-GW
• Description: DEV BD 20X2 LCD GRY TXT WHT BL
• Manufacturer: Matrix Orbital
• Series: Dev Devilr

Specifications of DD-DB1-AL202C-GW

• Main Purpose: Displays, LCD Display
• Embedded: Yes, ASIC
• Utilized Ic / Part: AL202C
• Primary Attributes: 20 x 2 Display, Gray Text White Background
• Secondary Attributes: GUI, mini USB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 635-1038

Definitions
ASCII: American standard code for information interchange used to give standardized numeric codes to alphanumeric
BPS: Bits per second, a measure of transmission speed.
DOW: Dallas One-Wire protocol is similar to I
FFSTN: Double film super-twisted nematic in reference to an LCD. The addition of two layers of film between the STN
Hexadecimal: A base 16 number system utilizing the numerals and letters 0 through F to represent the values 0-15.
I
LSB: Least significant bit or byte in a transmission, the rightmost when read.
MSB: Most significant bit or byte in a transmission, the leftmost when read.
RS232: Recommended standard 232, a widely used serial protocol. A low level is -30V while a high is +30V.
SDA: Serial data line used to transfer data in I
SCL: Serial clock line used to designate data bits in I
STN: Super-twisted nematic in reference to an LCD. In a relaxed or nematic state, crystals orientate themselves in the
TTL: Transistor-transistor logic applied to a serial protocol. A low level is 0V while high logic is 5V.
USB: Universal Serial Bus protocol widely used in PCs.
VFD: Vacuum florescent display.
GPO: General purpose output, used to control peripheral devices from a display.
GUI: Graphical user interface.
LCD: Liquid crystal display.
2
C: Inter-integrated circuit protocol employing a clock and data line to communicate a short distance at slow speeds
between a master and up to 128 addressable slave devices. A Matrix Orbital display is a slave device.
resistor. Nominal values are between 2K and 10K Ω.
same direction and allow light to pass. In an excited state these crystals align to block light. Super-twisted crystals
move from 180 to 270 degrees between phases to providing contrast than TN models.
Nominal values are between 2K and 10K Ω.
characters.
for data, while two others supply power and ground. Matrix Orbital displays are only tested with non-parasitic
devices, those that do not draw power from the data line, however, some parasitic devices may work.
display and polarizer improves contrast.
2
2
C providing reduced data rates at a greater distance. One wire is provided
C protocol. This open drain line should be pulled high through a resistor.
2
C protocol. This open drain line should be pulled high through a
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