DD-DB1-AL202C-GW Matrix Orbital, DD-DB1-AL202C-GW Datasheet - Page 30

• 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

6. Keypad
Key presses are automatically sent to the host when received by the display. Default is auto transmit on.
Key presses are held in the 10 key buffer to be polled by the host. Use this mode for I
Reads the last unread key press from the 10 key display buffer. If another key is stored in the buffer the MSB will be 1,
the MSB will be 0 when the last key press is read. If there are no stored key presses a value of 0 will be returned. Auto
transmit key presses must be turned off for this command to be successful.
Response
Clears all key presses from the display buffer.
Sets the time between a key press and a key read by the display. Most switches will bounce when pressed, the debounce
time allows the switch to settle for an accurate read. Default is 8 representing a debounce time of approximately 52ms.
Time
6.1.Auto Transmit
6.2.Auto Transmit
6.3.Poll Key
6.4.Clear Key
6.5.Set
Key Presses On
Key Presses Off
Press
Buffer
Debounce
Time
1 byte, debounce increment (debounce time = time * 6.554ms)
1 byte, value of key pressed (MSB determines additional keys to be read)
Dec
Hex
ASCII
Dec
Hex
ASCII
Dec
Hex
ASCII
Dec
Hex
ASCII
Dec
Hex
ASCII
254 38
FE 26
254 69
■
FE 45
&
■
254 85
254 65
254 79
E
FE 55
FE 41
FE 4F
■
■
■
U
A
O
Time
Time
Time
28
2
C transactions. Default is on.