- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376962 > DS1920 Temperature iButton PDF資料下載
參數(shù)資料
| 型號： | DS1920 |
| 英文描述： | Temperature iButton |
| 文件頁數(shù)： | 5/22頁 |
| 文件大?。?/td> | 729K |
| 代理商： | DS1920 |
DS1920
5 of 22
The most significant (sign) bit is duplicated into all of the bits in the upper MSB of the 2-byte
temperature register in memory. This “sign-extension” yields the 16-bit temperature readings as shown in
Table 1.
Higher resolutions may be obtained by the following procedure. First, read the temperature, and truncate
the 0.5°C bit (the LSB) from the read value. This value is TEMP_READ. The value left in the counter
may then be read. This value is the count remaining (COUNT_REMAIN) after the gate period has
ceased. The last value needed is the number of counts per degree C (COUNT_PER_C) at that
temperature. The actual temperature may be then be calculated by the user using the following formula:
TEMPERATURE = TEMP_READ - 0.25 +
C
COUNT_PER_
IN)
COUNT_REMA
-
_C
(COUNT_PER
TEMPERATURE MEASURING CIRCUITRY
Figure 3
TEMPERATURE/DATA RELATIONSHIPS
Table 1
TEMPERATURE
DIGITAL OUTPUT
(BINARY)
00000000 11001000
00000000 00110010
00000000 00000001
00000000 00000000
11111111 11111111
11111111 11001110
11111111 10010010
DIGITAL OUTPUT
(HEX)
00C8H
0032H
0001H
0000H
FFFFH
FFCEH
FF92H
+100
°
C
+25
°
C
+
°
C
+0
°
C
-
°
C
-25
°
C
-55
°
C
SET/CLEAR
LSB
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1920-F3 | Temperature iButton |
| DS1921 | High-Resolution Thermochron iButton |
| DS1921H-F5 | High-Resolution Thermochron iButton |
| DS1921Z-F5 | High-Resolution Thermochron iButton |
| DS1963L-F5 | NVRAM (Battery Based) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1920+F5 | 制造商:Maxim Integrated Products 功能描述:TEMP IBTN 2PIN F5 MICROCAN - Rail/Tube |
| DS1920-F3 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Temperature iButton |
| DS1920-F5 | 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 |
| DS1920-F5+ | 功能描述:iButton Temperature 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 |
| DS1921 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High-Resolution Thermochron iButton |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。