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參數(shù)資料
| 型號： | DS1920 |
| 英文描述： | Temperature iButton |
| 文件頁數(shù)： | 15/22頁 |
| 文件大?。?/td> | 729K |
| 代理商： | DS1920 |
DS1920
15 of 22
MEMORY AND CONTROL FUNCTIONS FLOW CHART
(cont’d) Figure 9
1-WIRE SIGNALING
The DS1920 requires strict protocols to ensure data integrity. The protocol consists of five types of
signaling on one line: Reset Sequence with Reset Pulse and Presence Pulse, Write 0, Write 1, Read Data
and Strong Pullup. All these signals except Presence Pulse are initiated by the bus master. The
initialization sequence required to begin any communication with the DS1920 is shown in Figure 10. A
Reset Pulse followed by a Presence Pulse indicates the DS1920 is ready to accept a ROM command. The
bus master transmits (TX) a Reset Pulse (t
RSTL
, minimum 480
μ
s). The bus master then releases the line
and goes into receive mode (RX). The 1-Wire bus is pulled to a high state via the pullup resistor. After
detecting the rising edge on the 1-Wire line, the DS1920 waits (t
PDH
, 15-60
μ
s) and then transmits the
Presence Pulse (t
PDL
, 60-240
μ
s).
相關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) |
相關代理商/技術參數(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 存儲類型:SRAM 存儲容量: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 存儲類型:SRAM 存儲容量: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 |
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