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參數(shù)資料
| 型號(hào)： | DS9097 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | COM Port Adapter(COM端口適配器) |
| 中文描述： | COM端口適配器 |
| 文件頁(yè)數(shù)： | 1/1頁(yè) |
| 文件大小： | 37K |
| 代理商： | DS9097 |
DS9097/DS9097E
COM Port Adapter
DS9097/DS9097E
042498 1/1
FEATURES
Provides a simple, low–cost interface to an RS232C
COM Port for reading and writing iButton
TM
devices
(DS9097E required for programming DS198x Add–
Only iButtons)
Adapter is powered entirely from an RS232 interface
(DS9097E may require optional auxiliary 12V supply)
Standard DB–9 (DSD9097) or DB–25 (DS9097E)
female connector for mating the adapter to the COM
Port of a computer and RJ–11 connector for easy
attachment of a probe such as the DS9092GT
DS9097E has an additional 2.1 mm male power jack
to allow for an auxiliary 12V DC supply for program-
ming Add–Only iButtons
Pin assignment DS9097, DB–9
TXD (3), RXD (2), DTR (4), PC–Ground (5); all other
pins not connected
Pin assignment DS9097E, DB–25
TXD (2), RXD (3), DTR (20), RTS (4), PC–Ground (7);
all other pins not connected
Auxiliary supply should be a regulated 12V @ 10 mA
minimum, center=GND, outer ring=V+ (Newark Elec-
tronics Stock No. 84F2081, Allied Electronics Stock
No. 928–9895, Stancor Model STA–300R, or equiva-
lent)
27.9
11.4
2.15.5
8.9
GND
VOLTAGE OUT
OUTPUT CONNECTOR FEMALE
All dimensions are in millimeters.
TYPICAL AUXILIARY SUPPLY
(NOT INCLUDED)
(NOT INCLUDED)
RCONNECTOR
DS90SUPPLY
DS9097E
DESCRIPTION
The DS9097 COM Port Adapter is a simple, low–cost
passive adapter which performs RS232C (
±
12V) level
conversion, allowing an iButton probe to be connected to
the serial port of a computer so that a non–EPROM iBut-
ton can be read and written directly. It can also read all
EPROM–based iButtons. The serial port must support a
data transmission rate of 115.2 kbits/s in order to create
the 1–Wire
TM
time slots correctly. Nearly all PCs support
the required bit rate and are fully compatible with the
DS9097. Since an eight bit character (6 data bits plus
start– and stop bit) on the RS232 bus operating at 115.2
kbits/s is used to form a single 1–Wire time slot, the maxi-
mum effective 1–Wire transfer rate is 14.4 kbits/s (regular
speed). Details on the operation of the DS9097 including
software examples are found in Application Note 74,
Section V.
The DS9097E is an upgraded version of the DS9097 that
is capable of supplying the 12 volts necessary to program
the EPROM–based iButton products (DS198x Add–Only
iButtons) in addition to reading and writing SRAM and
EEPROM–based devices (DS199x, DS196x, DS197x).
When combined with the appropriate software, the
DS9097E can be used in a standalone mode where all of
the programming current is supplied by the serial port
itself. In this configuration, the maximum number of
EPROM bits that can be programmed simultaneously is
four on a typical serial port. For higher performance, the
above mentioned 12V auxiliary supply can be plugged
into the power jack on the DS9097E and with proper soft-
ware enable the serial port to program up to eight
EPROM bits simultaneously.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS9097# | 功能描述:iButton配件 COM Port Adapter RoHS:否 產(chǎn)品:iButton Probes 用于:DS19xx Series 制造商:Maxim Integrated |
| DS9097E | 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| DS9097E# | 功能描述:iButton配件 COM Port Adapter RoHS:否 產(chǎn)品:iButton Probes 用于:DS19xx Series 制造商:Maxim Integrated |
| DS9097U | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Universal 1-Wire COM Port Adapter Provides Strong Pullup to 5V for Temperature |
| DS9097U_11 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Universal 1-Wire COM Port Adapter Provides Strong Pullup to 5V for Temperature |
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