DD-DB1-AL202C-GW Matrix Orbital, DD-DB1-AL202C-GW Datasheet - Page 19

• 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

Commands
1. Communications
Immediately changes the I
Address
Immediately changes the baud rate. Can be temporarily forced to 19200 with manual override.
Speed
Immediately changes the baud rate to a non-standard value. Range is 977 to 153800. Speed must be a whole number.
Due to rounding, error increases with baud rate, actual baud must be within 3% of desired baud to ensure accurate
communication. Baud rate can be temporarily forced to 19200 by a manual override.
Speed
Selects the protocol used for data transmission to the host. Data transmission from the host is not affected. Must be set
to the protocol in use to receive data correctly.
Protocol
1.1.Changing the I2C
1.2.Changing the
1.3.Setting a Non-
1.4.Transmission
Slave Address
Baud Rate
Standard Baud Rate
Protocol Select
1 byte, valid settings shown below
2 byte, calculations shown below
1 byte, even value
1 byte, 1 for Serial (RS232/TTL/USB) or 0 for I
Speed =
Speed
Rate
Dec
Hex
ASCII
Dec
Hex
8× DesiredBaud 
2
Dec
Hex
ASCII
C write address.
CrystalSpeed
1200
83
Dec
Hex
254 57
254 160
FE 39
FE A0
254 51
■
FE 33
2400
9
254 164
■
41
∣DesiredBaud − ActualBaud∣
FE A4
Speed
Speed
Speed
3
Protocol
Protocol
Address
Address
Address
4800
Speed
Speed
207
−1
DesiredBaud
9600
103
2
C
17
19200
51
ActualBaud =
0.03
28800
34
38400
8× Speed 1
25
CrystalSpeed
57600
16