參數(shù)資料
型號(hào)： DS1921H-F5
英文描述： High-Resolution Thermochron iButton
中文描述： 高分辨率Thermochron iButton的
文件頁(yè)數(shù)： 36/44頁(yè)
文件大?。?/td> 271K
代理商： DS1921H-F5
DS1921H/Z
36 of 44
MISSION EXAMPLE: PREPARE AND START A NEW MISSION
Assumption: The previous mission has come to an end. To end an ongoing mission write the MIP bit in
the Status Register to 0.
The preparation of a DS1921H/Z for a mission including the start of the mission requires up to four steps:
Step 1: set the RTC (if it needs to be adjusted)
Step 2: clear the data of the previous mission
Step 3: set the search condition and mission start delay, clear alarm flags
Step 4: set the temperature alarms and write the sample rate to start the mission
STEP 1
Let the actual time be 15:30:00 hours on Monday, the 1
st
of April in 2002. This results in the following
data to be written to the RTC registers:
Address:
200h
201h
202h
Data:
00h
30h
15h
With only a single DS1921H/Z connected to the bus master, the communication of step 1 is as follows:
MASTER MODE
DATA (LSB FIRST)
TX
(Reset)
RX
(Presence)
TX
CCh
TX
0Fh
TX
00h
TX
02h
TX
<7 data bytes>
TX
(Reset)
RX
(Presence)
TX
CCh
TX
AAh
RX
00h
RX
02h
RX
06h
RX
<7 data bytes>
TX
(Reset)
RX
(Presence)
TX
CCh
TX
55h
TX
00h
TX
02h
TX
06h
TX
(Reset)
RX
(Presence)
203h
01h
204h
81h
205h
04h
206h
02h
COMMENTS
Reset pulse (480
μ
s to 960
μ
s)
Presence pulse
Issue Skip ROM command
Issue Write Scratchpad command
TA1, beginning offset = 00h
TA2, address = 0200h
Write 7 bytes of data to scratchpad
Reset pulse
Presence pulse
Issue Skip ROM command
Issue Read Scratchpad command
Read TA1, beginning offset = 00h
Read TA2, address = 0200h
Read E/S, ending offset = 6h, flags = 0h
Read scratchpad data and verify
Reset pulse
Presence pulse
Issue Skip ROM command
Issue Copy Scratchpad command
TA1
TA2
(AUTHORIZATION CODE)
E/S
Reset pulse
Presence pulse
相關(guān)PDF資料
PDF描述
DS1921Z-F5 High-Resolution Thermochron iButton
DS1963L-F5 NVRAM (Battery Based)
DS1963S SHA iButton
DS1971 256-Bit EEPROM iButton
DS1973 4-kbit EEPROM iButton
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1921H-F5# 功能描述:iButton Thermochron High Res iButton RoHS:否 存儲(chǔ)類型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated
DS1921H-F5/A1C 功能描述:iButton RoHS:否 存儲(chǔ)類型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated
DS1921H-F5+A1C 功能描述:iButton RoHS:否 存儲(chǔ)類型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated
DS1921H-F50 功能描述:iButton RoHS:否 存儲(chǔ)類型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated
DS1921K 功能描述:存儲(chǔ)器 IC 開發(fā)工具 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Reference Boards 工具用于評(píng)估:M24LR64-R 存儲(chǔ)容量:64 kbit 存儲(chǔ)類型:EEPROM 工作電源電壓:1.8 V to 5.5 V
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*