参数资料
型号: DD-DB1-AL204A
厂商: Matrix Orbital
文件页数: 19/47页
文件大小: 0K
描述: DEV BD 20X4 LCD BLK TXT Y/G BL
产品变化通告: 12C Displays Change 11/Oct/2011
标准包装: 1
系列: Dev Devil
主要目的: 显示器,LCD 显示器
嵌入式: 是,ASIC
已用 IC / 零件: AL204A
主要属性: 20 x 4 显示器,黑色文本,黄/绿色背景
次要属性: GUI,迷你型 USB
已供物品: 板,线缆
产品目录页面: 2846 (CN2011-ZH PDF)
其它名称: 635-1035

Commands
1. Communications
1.1.Changing the I2C Dec
254 51 Address
Slave Address
Hex
ASCII
FE 33 Address
■ 3 Address
Immediately changes the I 2 C write address.
Address 1 byte, even value
1.2.Changing the Dec
254 57 Speed
Baud Rate
Hex
ASCII
FE 39 Speed
■ 9 Speed
Immediately changes the baud rate. Can be temporarily forced to 19200 with manual override.
Speed 1 byte, valid settings shown below
Rate
Speed
1200
83
2400
41
4800
207
9600
103
19200
51
28800
34
38400
25
57600
16
1.3.Setting a Non- Dec
Standard Baud Rate Hex
254 164 Speed
FE A4 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 2 byte, calculations shown below
Speed =
CrystalSpeed
 8 × DesiredBaud 
? 1
ActualBaud =
CrystalSpeed
 8 × Speed  1  
 0.03
DesiredBaud ? ActualBaud
DesiredBaud
1.4.Transmission
Dec
254 160 Protocol
Protocol Select Hex
FE A0 Protocol
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 byte, 1 for Serial (RS232/TTL/USB) or 0 for I 2 C
17
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参数描述
DD-DB1-AL204A-GW 功能描述:显示开发工具 DevDevil Dev Board 20x4 LCD White Bg RoHS:否 制造商:4D Systems 产品:4Display Shields 工具用于评估:?OLED-160-G1, ?OLED-160-G2 接口类型:Serial 工作电源电压:5 V
DD-DB1-AL204A-IY 功能描述:显示开发工具 DevDevil Dev Board 20x4 LCD Black Bg RoHS:否 制造商:4D Systems 产品:4Display Shields 工具用于评估:?OLED-160-G1, ?OLED-160-G2 接口类型:Serial 工作电源电压:5 V
DD-DB1-AL204A-WB 功能描述:显示开发工具 DevDevil Dev Board 20x4 LCD Blue Bg RoHS:否 制造商:4D Systems 产品:4Display Shields 工具用于评估:?OLED-160-G1, ?OLED-160-G2 接口类型:Serial 工作电源电压:5 V
DD-DB1-AV202C 功能描述:显示开发工具 DevDevil Dev Board 20x2 VFD Black Bg RoHS:否 制造商:4D Systems 产品:4Display Shields 工具用于评估:?OLED-160-G1, ?OLED-160-G2 接口类型:Serial 工作电源电压:5 V
DD-DB1-AV204A 功能描述:显示开发工具 DevDevil Dev Board 20x4 VFD Black Bg RoHS:否 制造商:4D Systems 产品:4Display Shields 工具用于评估:?OLED-160-G1, ?OLED-160-G2 接口类型:Serial 工作电源电压:5 V