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參數(shù)資料
| 型號： | DS1996 |
| 英文描述： | 64kbit Memory iButtonTM |
| 中文描述： | 64k位存儲器iButton® |
| 文件頁數(shù)： | 15/18頁 |
| 文件大?。?/td> | 321K |
| 代理商： | DS1996 |
DS1996
15 of 18
INITIALIZATION PROCEDURE “RESET AND PRESENCE PULSES”
Figure 10
Regular Speed
480
μ
s
≤
t
RSTL
<
∞
*
480
μ
s
≤
t
RSTH
<
∞
(includes recovery time)
15
μ
s
≤
PDH
< 60
μ
s
60
μ
s
≤
t
PDL
< 240
μ
s
Overdrive Speed
48
μ
s
≤
t
RSTL
< 80
μ
s
48
μ
s
≤
t
RSTH
<
∞
2
μ
s
≤
t
PDH
< 6
μ
s
8
μ
s
≤
t
PDL
< 24
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 TIME SLOTS
The definitions of write and read time slots are illustrated in Figure 11. All time slots are initiated by the
master driving the data line low. The falling edge of the data line synchronizes the DS1996 to the master
by triggering a delay circuit in the DS1996. During write time slots, the delay circuit determines when the
DS1996 will sample the data line. For a read data time slot, if a ”0” is to be transmitted, the delay circuit
determines how long the DS1996 will hold the data line low overriding the 1 generated by the master. If
the data bit is a ”1”, the iButton will leave the read data time slot unchanged.
READ/WRITE TIMING DIAGRAM
Figure 11
Write-One Time Slot
Regular Speed
60
μ
s
≤
t
SLOT
< 120
μ
s
1
μ
s
≤
t
LOW1
< 15
μ
s
1
μ
s
≤
t
REC
<
∞
Overdrive Speed
6
μ
s
≤
t
SLOT
< 16
μ
s
1
μ
s
≤
t
LOW1
< 2
μ
s
1
μ
s
≤
t
REC
<
∞
RESISTOR
MASTER
DS1996
RESISTOR
MASTER
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1996L-F5 | 64kbit Memory iButtonTM |
| DS2004SF24 | Rectifier Diode |
| DS2004SF25 | Rectifier Diode |
| DS2004SF | Rectifier Diode |
| DS2004SF26 | Rectifier Diode |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1996L-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 |
| DS1996L-F5/A18 | 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 |
| DS1996L-F5+ | 功能描述:iButton 64Kb Memory 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 |
| DS-19P | 制造商:Pan Pacific 功能描述: |
| DS-19S | 制造商:Pan Pacific 功能描述: |
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