- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376948 > DS1205S MultiKey Chip PDF資料下載
參數(shù)資料
| 型號(hào)： | DS1205S |
| 英文描述： | MultiKey Chip |
| 中文描述： | 多密鑰芯片 |
| 文件頁(yè)數(shù)： | 9/17頁(yè) |
| 文件大小： | 138K |
| 代理商： | DS1205S |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)當(dāng)前第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)
DS1205S
021798 9/17
WRITE DATA TIMING DIAGRAM
Figure 13
CLOCK
DATA
RESET
R/W
R/W
R/W
t
DC
t
CC
t
CWH
t
CCH
t
R
t
CL
t
F
t
CH
t
CDH
READ DATA TIMING DIAGRAM
Figure 14
CLOCK
R/W
RESET
t
CC
t
CWH
t
CDD
t
DC
t
CDZ
1-WIRE PROTOCOL
The 1-wire protocol defines the system as a single bus
master system with single or multiple slaves. In all
instances, the DS1205S is a slave. The bus master is
typically a microcontroller. The discussion of this proto-
col is broken down into two topics: hardware configura-
tion and transaction sequence.
Hardware Configuration
The 1-wire bus has only a single line by definition; it is
important that each device on the bus be able to drive it
at the appropriate time. To facilitate this, each device at-
tached to the 1-wire bus must have open drain connec-
tions. The DS1205S is an open drain part with an inter-
nal circuit equivalent to that shown in Figure 15. Ideally,
the bus master should also be open drain; but if this is
not feasible, two standard TTL pins can be tied together,
one as an output and one as an input. When using a bus
master with an open drain port, the bus requires a pull-
up resistor at the master end of the bus. The system bus
master circuit should be equivalent to the one shown in
Figure 16. The value of the pull-up resistor should be
greater than 5K ohms. If the pull-up value is less, the bus
may not be pulled to an adequately low state (< 0.6
volts).
The idle state for the 1-wire bus is high. If, for any rea-
son, a transaction needs to be suspended, the bus
MUST be left in the idle state if the transaction is to re-
sume. If this does not occur and the bus is left for more
than 560
μ
S, all components on the bus will be reset.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1205V | MultiKey |
| DS1208 | dallas semiconductor reliability report |
| DS1210 | Nonvolatile Controller Chip |
| DS1211 | Nonvolatile Controller x 8 Chip |
| DS1217M | Nonvolatile Read/Write Cartridge |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1205V | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:MultiKey |
| DS1206N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral Interface |
| DS1206S | 制造商:Maxim Integrated Products 功能描述: |
| DS1206SN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral Interface |
| DS1207 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MISC MEMORY|MODULE|5PIN|PLASTIC |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。