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參數(shù)資料
| 型號： | DS1985 |
| 英文描述： | 16-kbit Add-Only iButton |
| 中文描述： | 16K位只添加iButton® |
| 文件頁數(shù)： | 20/25頁 |
| 文件大?。?/td> | 440K |
| 代理商： | DS1985 |
DS1985
20 of 25
(Figure 11) should be applied for 480
μ
s, after which the bus master returns the data line to an idle high
state controlled by the pullup resistor. Note that due to the high voltage programming requirements for
any 1-Wire EPROM device, it is not possible to multidrop non-EPROM based 1-Wire devices with the
DS1985 during programming. An internal diode within the non-EPROM based 1-Wire devices will
attempt to clamp the data line at approximately 8 volts and could potentially damage these devices.
INITIALIZATION PROCEDURE “RESET AND PRESENCE PULSES”
Figure 9
480
μ
s
≤
t
RSTL
<
∞
*
480
μ
s
≤
t
RSTH
<
∞
(includes recovery time)
15
μ
s
≤
t
PDH
< 60
μ
s
60
μ
s
≤
t
PDL
< 240
μ
s
In order not to mask interrupt signaling by other devices on the 1-Wire bus, t
RSTL
+ t
R
should always
be less than 960
μ
s.
READ/WRITE TIMING DIAGRAM
Figure 10
Write-1 Time Slot
60
μ
s
≤
t
SLOT
< 120
μ
s
1
μ
s
≤
t
LOW1
< 15
μ
s
1
μ
s
≤
t
REC
<
∞
RESISTOR
MASTER
RESISTOR
MASTER
DS1985
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1985-F5 | 16-kbit Add-Only iButton |
| DS1985-F3 | 16-kbit Add-Only iButton |
| DS1990P | Analog IC |
| DS1990R | Analog IC |
| DS1991L | Analog IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1985+F3 | 制造商:Maxim Integrated Products 功能描述:ADD-O IBTN 16KB, F3 (GENERIC) LFREE - Rail/Tube |
| DS1985+F5 | 制造商:Maxim Integrated Products 功能描述:ADD-O IBTN 16KB, F5 (GENERIC) LFREE - Rail/Tube |
| DS1985-F3 | 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 |
| DS1985-F3# | 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 |
| DS1985-F3+ | 功能描述:iButton 16Kb Add-Only 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 |
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