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参数资料
| 型号： | DS1920-F5+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 5/22页 |
| 文件大小： | 0K |
| 描述： | IBUTTON TEMPERATURE F5 |
| 产品培训模块： | Obsolescence Mitigation Program |
| RoHS指令信息： | IButton RoHS Compliance Plan |
| 标准包装： | 25 |
| 系列： | iButton® |
| 存储容量： | 2B |
| 存储器类型： | EEPROM |
DS1920
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 +
(COUNT_PER _C - COUNT_REMAIN)
COUNT_PER_ C
TEMPERATURE MEASURING CIRCUITRY Figure 3
SET/CLEAR
LSB
TEMPERATURE/DATA RELATIONSHIPS Table 1
TEMPERATURE
+100 ° C
+25 ° C
+? ° C
+0 ° C
-? ° C
-25 ° C
-55 ° C
DIGITAL OUTPUT
(BINARY)
00000000 11001000
00000000 00110010
00000000 00000001
00000000 00000000
11111111 11111111
11111111 11001110
11111111 10010010
5 of 22
DIGITAL OUTPUT
(HEX)
00C8h
0032h
0001h
0000h
FFFFh
FFCEh
FF92h
相关PDF资料 |
PDF描述 |
|---|---|
| DS1921G-F5# | IBUTTON THERMOCHRON F5 |
| DS1921H-F5# | IBUTTON THERMOCHRON F5 |
| DS1921K# | KIT IBUTTON THERMOCHRON |
| DS1922E-F5# | IBUTTON TEMP LOGGER 4KBit F5 |
| DS1922L-F5# | IBUTTON TEMP LOGGER |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1920-F5+ | 功能描述:iButton Temperature iButton RoHS:否 存储类型:SRAM 存储容量:512 B 组织: 工作电源电压:3 V to 5.25 V 接口类型:1-Wire 最大工作温度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封装 / 箱体:F5 MicroCan 制造商:Maxim Integrated |
| DS1921 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:High-Resolution Thermochron iButton |
| DS1921G | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Thermochron iButton |
| DS1921G_11 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Logs Up to 2048 Consecutive Temperature Thermochron iButton |
| DS1921G_1109 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Thermochron iButton |
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