参数资料
型号: LK202-25-USB-WB
厂商: Matrix Orbital
文件页数: 8/42页
文件大小: 2198K
描述: LCD CHARACTER DISPLAY 20X2 USB
标准包装: 1
系列: LK202-25
12
Keypad Header
Figure 16: Keypad Header
Table 10: Keypad Pinout
Pin
Function
Pin
Function
1
Gnd
7
Column 1
2
Row 1
8
Column 2
3
Row 2
9
Column 3
4
Row 3
10
Column 4
5
Row 4
11
Column 5
6
Row 5
12
Gnd/Vcc*
To facilitate user input, the LK202-25/VK202-25
provides a Keypad Interface Connector which allows a
matrix style keypad of up to twenty-five keys
to be directly connected to the display module.
Key
presses are generated when a short is detected between a row and a column.
When a key
press is
generated, a character
specific to that key press
is automatically sent on the Tx communication line.
If
the display module is running in I2C mode, the “Auto Transmit Keypress” function may be turned off
to
allow the key presses to remain in the buffer so that they may be polled.
The character that is
associated with each key press may also be altered using the “Assign Key Codes” command.
The straight
twelve pin header of the Keypad Interface Connector will interface to a variety of different devices
including the
Matrix Orbital KPP4x4 keypad.
*Note:
The Ground / +5V pin is toggled by the jumper to the right of the keypad connector. Jump pads 1 & 2 for
+5V or 2 & 3 for GND.
相关PDF资料
PDF描述
LK202-25-USB-R LCD CHARACTER DISPLAY 20X2 USB
LK202-25-USB-FG LCD CHARACTER DISPLAY 20X2 USB
LK202-25-FW-E LCD CHAR DISP 20X2 I2C/RS232/TTL
LK202-25-USB-FW LCD 20X2 79MM X 17MM COL/WHT USB
0638235675 LOCATOR ASSEMBLY FOR 0638235600
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