參數(shù)資料
型號(hào)： DS2422
英文描述： 1-Wire Temperature/Datalogger with 8kB Datalog Memory
中文描述： 1-Wire®溫度/數(shù)據(jù)記錄器，帶有8KB數(shù)據(jù)記錄存儲(chǔ)器
文件頁(yè)數(shù)： 4/48頁(yè)
文件大?。?/td> 444K
代理商： DS2422
DS2422
4 of 48
Note 1:
Note 2:
System Requirement
Maximum allowable pullup resistance is a function of the number of 1-Wire devices in the system and 1-Wire recovery times. The
specified value here applies to systems with only one device and with the minimum 1-Wire recovery times. For more heavily
loaded systems, an active pullup such as that found in the DS2480B may be required.
Capacitance on the data pin could be 800pF when V
is first applied. If a 2.2k resistor is used to pull up the data line, 2.5μs
after V
PUP
has been applied the parasite capacitance will not affect normal communications.
Guaranteed by design, not production tested.
V
, V
are a function of the internal supply voltage.
Voltage below which, during a falling edge on I/O, a logic '0' is detected.
The voltage on I/O needs to be less or equal to V
ILMAX
whenever the master drives the line low.
Voltage above which, during a rising edge on I/O, a logic '1' is detected.
After V
TH
is crossed during a rising edge on I/O, the voltage on I/O has to drop by V
HY
to be detected as logic '0'.
The I-V characteristic is linear for voltages less than 1V.
The earliest recognition of a negative edge is possible at t
after V
has been previously reached.
Highlighted numbers are NOT in compliance with the published iButton standards. See comparison table below.
Interval during the negative edge on I/O at the beginning of a Presence Detect pulse between the time at which the voltage is
90% of V
PUP
and the time at which the voltage is 10% of V
PUP
.
represents the time required for the pullup circuitry to pull the voltage on I/O up from V
IL
to V
TH
.
represents the time required for the pullup circuitry to pull the voltage on I/O up from V
IL
to the input high threshold of the bus
master.
This is the expected range when using a crystal equivalent to the KDS SN14J (12.5pF).
Time to reach 63% of the temperature change; measured at a temperature transition step from +25°C to +85°C.
A 2-point calibration trim at 3V must be done to achieve the specified accuracy at 3V. An application note is available to help
developers perform the calibration by writing the trim registers to properly orient the error curve.
The duration is user-programmable from 0ms (code 00h) to 127.5ms (code FFh) with a tolerance of ±0.5ms. See
Delay Register
,
address 400h, for details.
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
Note 10:
Note 11:
Note 12:
Note 13:
Note 14:
Note 15:
Note 16:
Note 17:
Note 18:
Note 19:
STANDARD VALUES
DS2422 VALUES
PARAMETER
NAME
t
SLOT
(incl. t
REC
)
t
RSTL
t
PDH
t
PDL
t
W0L
1)
Intentional change, longer recovery time requirement due to modified 1-Wire front end.
STANDARD SPEED
MIN
61μs
480μs
15μs
60μs
60μs
OVERDRIVE SPEED
MIN
7μs
48μs
2μs
8μs
6μs
STANDARD SPEED
MIN
65μs
690μs
15μs
60μs
60μs
OVERDRIVE SPEED
MIN
9.5μs
70μs
2μs
7μs
7.5μs
MAX
MAX
MAX
MAX
(undef.)
(undef.)
60μs
240μs
120μs
(undef.)
80μs
6μs
24μs
16μs
(undef.)
720μs
63.5μs
287μs
120μs
(undef.)
80μs
7μs
28μs
12μs
相關(guān)PDF資料
PDF描述
DS2422S 1-Wire Temperature/Datalogger with 8kB Datalog Memory
DS2482-800 Eight-Channel 1-Wire Master
DS2482-100 Single-Channel 1-Wire Master
DS2482S-100 Single-Channel 1-Wire Master
DS2482S-800 Eight-Channel 1-Wire Master
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS2422P 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Serial SRAM
DS2422S 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
DS2422S+ 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
DS2422X 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
DS2423 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:4kbit 1-Wire RAM with Counter
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