- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376962 > DS1921Z-F5 High-Resolution Thermochron iButton PDF資料下載
參數(shù)資料
| 型號(hào)： | DS1921Z-F5 |
| 英文描述： | High-Resolution Thermochron iButton |
| 中文描述： | 高分辨率Thermochron iButton的 |
| 文件頁數(shù)： | 11/44頁 |
| 文件大小： | 271K |
| 代理商： | DS1921Z-F5 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁當(dāng)前第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
DS1921H/Z
11 of 44
BIT DESCRIPTION
MIP: Mission in Progress
BIT(S)
b5
DEFINITION
If this bit reads 1 the DS1921H/Z has been set up for a mission and this
mission is still in progress. A mission is started if the EM bit of the
Control Register (address 20Eh) is 0 and a non-zero value is written to
the Sample Rate Register, address 20Dh. The MIP bit returns from logic
1 to logic 0 when a mission is ended. A mission will end with the first
write attempt (Copy Scratchpad command) to any register in the
address range of 200h to 213h. Alternatively, a mission can be ended by
directly writing to the Status Register and setting the MIP bit to 0. The
MIP bit cannot be set to 1 by writing to the status register.
If this bit reads 1 the DS1921H/Z is currently performing a temperature
conversion as part of a mission in progress. The mission samples occur
on the seconds rollover from 59 to 00. The SIP bit will change from 0 to
1 approximately 250ms before the actual temperature conversion begins
allowing the circuitry of the chip to wake-up. A temperature conversion
including a wake-up phase takes maximum 875ms. During this time
read accesses to the memory pages 17 and higher are permissible but
may reveal invalid data.
Logic 1 in the Temperature Low Flag bit indicates that a temperature
measurement during a mission revealed a temperature equal to or lower
than the value in the Temperature Low Threshold Register. The
Temperature Low Flag can be cleared at any time by writing this bit to 0.
This flag must be cleared before starting a new mission.
Logic 1 in the Temperature High Flag bit indicates that a temperature
measurement during a mission revealed a temperature equal to or
higher than the value in the Temperature High Threshold Register.
The Temperature High Flag can be cleared at any time by writing this bit
to 0. This flag must be cleared before starting a new mission.
If this bit reads 1, a RTC alarm has occurred (see section
TIMEKEEPING
for details). The Timer Alarm Flag can be cleared at any
time by writing this bit to logic 0. Since the timer alarm cannot be
disabled, the TAF flag usually reads 1 during a mission. This flag should
be cleared before starting a new mission.
SIP: Sample in Progress
b4
TLF: Temperature Low
Flag
b2
THF: Temperature High
Flag
b1
TAF: Timer Alarm Flag
b0
MISSION TIME STAMP
The Mission Time Stamp indicates the time and date of the first temperature conversion of a mission.
Subsequent temperature conversions will take place as many minutes apart from each other as specified
by the value in the Sample Rate Register. Mission samples occur on minute boundaries.
Mission Time Stamp Register Bitmap
ADDR
0215h
0216h
b7
0
0
b6
b5
b4
b3
b2
Single Minutes
Single Hours
b1
b0
10 Minutes
20h.
AM/PM
12/24
10h.
0217h
0218h
0219h
0
0
0
0
10 Years
10 Date
0
Single Date
Single Months
Single Years
10m.
MISSION SAMPLES COUNTER
The Mission Samples Counter indicates how many temperature measurements have taken place during
the current mission in progress (if MIP = 1) or during the latest mission (if MIP = 0). The value is stored
as an unsigned 24-bit integer number. This counter is reset through the Clear Memory command.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1963L-F5 | NVRAM (Battery Based) |
| DS1963S | SHA iButton |
| DS1971 | 256-Bit EEPROM iButton |
| DS1973 | 4-kbit EEPROM iButton |
| DS1977 | 32KB EEPROM iButton |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1921Z-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 |
| DS1921Z-F5/A1D | 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 |
| DS1921Z-F5+A1D | 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 |
| DS1921Z-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 |
| DS1922E | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:High-Temperature Logger iButton with 8KB |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。