参数资料
型号: LK202-25-FW-V
厂商: Matrix Orbital
文件页数: 19/42页
文件大小: 2198K
描述: LCD CHAR DISP 20X2 I2C/RS232/TTL
标准包装: 1
系列: LK202-25
22
6.6
Keypad
6.1
Auto Transmit
Key Presses On
Dec
Hex
ASCII
254 65
FE 41
A
v5.6
Key presses are automatically sent to the host when received by the display. Default is Auto Transmit on.
6.2
Auto Transmit
Key Presses Off
Dec
Hex
ASCII
254 79
FE 4F
O
v5.6
Key presses are held in the 10 key buffer
to be polled by the host using the Poll Key Press command. Use this
mode for I2C transactions. Default is Auto Transmit on.
6.3
Poll Key
Press
Dec
Hex
ASCII
254 38
FE 26
&
v5.6
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
Byte
Value of key pressed (MSb determines additional keys to be read).
6.4
Clear Key
Buffer
Dec
Hex
ASCII
254 69
FE 45
E
v5.6
Clears all key presses from the key buffer.
6.5
Set Debounce
Time
Dec
Hex
ASCII
254 85
FE 55
U
Time
Time
Time
v5.6
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 approximately 52ms.
Time
Byte
Debounce
increment (debounce time = Time
* 6.554ms).
6.6
Set Auto
Repeat Mode
Dec
Hex
ASCII
254 126
FE 7E
DEL
Mode
Mode
Mode
v5.6
Sets key press repeat mode to typematic or hold. In typematic
mode if a key press is held, the key value is
transmitted immediately, then 5 times a second after a 1 second delay. In hold mode, the key down value is
transmitted once when pressed, and then the key up value is sent when the key is released. Default is typematic.
Mode
Byte
1 for hold mode or 0 for typematic.
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相关代理商/技术参数
参数描述
LK202-25-FW-V-E 制造商:Matrix Orbital 功能描述:20x2 Wht Txt, Blk BG Wide Volt, Ext Temp
LK202-25-FY 功能描述:LCD字符显示模块与配件 Black Background Yellow Text RoHS:否 制造商:Lumex 显示模式:Transflective 字符计数 x 行:16 x 2 特点: 流体类型:STN 接口: 背景色: 工作温度范围:- 20 C to + 70 C 封装:Bulk
LK202-25-GW 功能描述:LCD字符显示模块与配件 White Background Blue Text RoHS:否 制造商:Lumex 显示模式:Transflective 字符计数 x 行:16 x 2 特点: 流体类型:STN 接口: 背景色: 工作温度范围:- 20 C to + 70 C 封装:Bulk
LK202-25-GW-E 功能描述:LCD字符显示模块与配件 20x2 L. Blu Txt G/Wht B/G Ext. Temp RoHS:否 制造商:Lumex 显示模式:Transflective 字符计数 x 行:16 x 2 特点: 流体类型:STN 接口: 背景色: 工作温度范围:- 20 C to + 70 C 封装:Bulk
LK202-25-GW-V 功能描述:LCD字符显示模块与配件 20x2 L. Blu Txt G/Wht B/G Ext. Volt RoHS:否 制造商:Lumex 显示模式:Transflective 字符计数 x 行:16 x 2 特点: 流体类型:STN 接口: 背景色: 工作温度范围:- 20 C to + 70 C 封装:Bulk