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參數(shù)資料
| 型號(hào)： | DS1991L-F5 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Memory IC:Other |
| 英文描述： | SPECIALTY MEMORY CIRCUIT, MEDB2 |
| 封裝： | MICROCAN-2 |
| 文件頁(yè)數(shù)： | 2/14頁(yè) |
| 文件大?。?/td> | 281K |
| 代理商： | DS1991L-F5 |
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DS1991
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1-WIRE SIGNALING
The DS1991 requires strict protocols to ensure data integrity. The protocol consists of four types of
signaling on one line: Reset Sequence with Reset Pulse and Presence Pulse, Write 0, Write 1 and Read
Data. All these signals except presence pulse are initiated by the bus master. The initialization sequence
required to begin any communication with the DS1991 is shown in Figure 10. A reset pulse followed by a
presence pulse indicates the DS1991 is ready to send or receive data given the correct ROM command
and memory function command. The bus master transmits (TX) a reset pulse (tRSTL, minimum 480
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 data pin, the DS1991 waits (tPDH, 15-60
s) and then transmits the presence pulse (t
PDL, 60-240
s).
ROM FUNCTIONS FLOW CHART Figure 9
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1991L-F5/A1A | 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 |
| DS1991L-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 |
| DS1991L-F5+A1A | 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 |
| DS1991L-F5W | 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 |
| DS1991LP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
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