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DS2408S/T&R PDF预览

DS2408S/T&R

更新时间: 2024-02-13 02:05:22
品牌 Logo 应用领域
美信 - MAXIM 光电二极管外围集成电路
页数 文件大小 规格书
36页 539K
描述
Parallel I/O Port, 8 I/O, CMOS, PDSO16, 0.150 INCH, SOP-16

DS2408S/T&R 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:SOIC包装说明:0.150 INCH, SOP-16
针数:16Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.36JESD-30 代码:R-PDSO-G16
JESD-609代码:e0长度:9.9 mm
I/O 线路数量:8端口数量:1
端子数量:16最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):245
认证状态:Not Qualified座面最大高度:1.75 mm
最大供电电压:5.25 V最小供电电压:2.8 V
标称供电电压:5 V表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:3.9 mm
uPs/uCs/外围集成电路类型:PARALLEL IO PORT, GENERAL PURPOSEBase Number Matches:1

DS2408S/T&R 数据手册

 浏览型号DS2408S/T&R的Datasheet PDF文件第30页浏览型号DS2408S/T&R的Datasheet PDF文件第31页浏览型号DS2408S/T&R的Datasheet PDF文件第32页浏览型号DS2408S/T&R的Datasheet PDF文件第33页浏览型号DS2408S/T&R的Datasheet PDF文件第35页浏览型号DS2408S/T&R的Datasheet PDF文件第36页 
DS2408  
MASTER MODE  
DATA (LSB FIRST)  
COMMENTS  
Write byte to Control/Status Register  
Reset pulse  
TX  
TX  
RX  
04h  
(Reset)  
(Presence)  
CCh  
Presence pulse  
Step 2  
TX  
TX  
TX  
TX  
RX  
TX  
RX  
TX  
TX  
Issue Skip ROM command  
Issue Read PIO Registers command  
TA1, target address = 8Dh  
TA2, target address = 008Dh  
Read Control/Status Register and verify  
Reset pulse  
Presence pulse  
F0h  
8Dh  
00h  
84h  
(Reset)  
(Presence)  
CCh  
Step 3  
Issue Skip ROM command  
Issue Channel-access Read command  
F5h  
(—)  
RX  
(—)  
DS2408 samples PIO pin status  
Read PIO pin status  
<PIO pin status byte>  
Repeat the previous 2 steps until the master  
has received a total of 32 bytes of PIO pin  
status  
(—)  
RX  
(—)  
<2 bytes CRC16>  
Read CRC16  
PIO pin status and CRC loop can be  
(—)  
(—)  
continued as long as the application requires.  
TX  
RX  
(Reset)  
(Presence)  
Reset pulse  
Presence pulse  
When using this communication example to read data from a remote microcontroller, as in Figure 17,  
synchronization between the remote microcontroller and the master can be maintained by transmitting  
data packets that begin with a length byte and end with a CRC16. See Application Note 114, section  
"UNIVERSAL DATA PACKET" for details.  
Example 3  
Task: Detect the specific DS2408 where the button was pressed and identify the pin to which the  
pushbutton is connected. This task is broken into the following steps:  
1) Configure the conditional search and verify configuration setting.  
2) Switch off all channel output transistors.  
3) Clear the activity latches.  
4) Search until a pushbutton is pressed.  
5) Identify device and pushbutton; reset activity latches.  
The device has to respond to the conditional search if the activity latch of at least one of the 8 channels is  
set. This requires the following setup data for the conditional search registers:  
Channel Selection Mask, select all channels FFh  
Channel Polarity Selection, select logic 1 for all channels FFh  
34 of 36  

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