參數(shù)資料
型號(hào)： DS2422S
英文描述： 1-Wire Temperature/Datalogger with 8kB Datalog Memory
中文描述： 1 - Wire溫度/數(shù)據(jù)記錄器與8kB的數(shù)據(jù)記錄存儲(chǔ)器
文件頁(yè)數(shù)： 8/48頁(yè)
文件大?。?/td> 444K
代理商： DS2422S
DS2422
8 of 48
Figure 3. DS2422 Block Diagram
All circuitry is powered by the battery
unless otherwise specified
Internal
Timekeeping &
Control Reg. &
Counters
3V Lithium
General-Purpose
SRAM
(512 Bytes)
Register Pages
(64 Bytes)
Calibration Memory
(64 Bytes)
Datalog
Memory
8k Bytes
32.768kHz
Oscillator
Control
Logic
256-Bit
Scratchpad
Memory
Function
Control
ROM
Function
Control
64-Bit
Lasered
ROM
Parasite
Powered
Circuitry
1-Wire
Port
I/O
ADC1
Thermal
Sense
VPAD
CNVST
SCLK
SDATA
PUMP_ONZ
5V Pad
Structures
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OVERVIEW
The block diagram in Figure 3 shows the relationships between the major control and memory sections of the
DS2422. The device has six main data components: 1) 64-bit lasered ROM, 2) 256-bit scratchpad, 3) 512-byte
general-purpose SRAM, 4) two 256-bit register pages of timekeeping, control, status, and counter registers and
passwords, 5) 64 bytes of calibration memory, and 6) 8192 bytes of data-logging memory. Except for the ROM and
the scratchpad, all other memory is arranged in a single linear address space. The data-logging memory, counter
registers and several other registers are read-only for the user. Both register pages are write-protected while the
device is programmed for a mission. The password registers, one for a read password and another one for a
read/write password can only be written to, never read.
The hierarchical structure of the 1-Wire protocol is shown in Figure 4. The bus master must first provide one of the
eight ROM function commands: 1) Read ROM, 2) Match ROM, 3) Search ROM, 4) Conditional Search ROM, 5)
Skip ROM, 6) Overdrive-Skip ROM, 7) Overdrive-Match ROM or 8) Resume. Upon completion of an Overdrive
ROM command byte executed at standard speed, the device will enter Overdrive mode, where all subsequent
communication occurs at a higher speed. The protocol required for these ROM function commands is described in
Figure 14. After a ROM function command is successfully executed, the memory and control functions become
accessible and the master may provide any one of the eight available commands. The protocol for these memory
and control function commands is described in Figure 12.
All data is read and written least significant bit first.
相關(guān)PDF資料
PDF描述
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
DS2502-E48 48-Bit Node Address Chip
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
DS2423D/T&R 制造商:Maxim Integrated Products 功能描述:IC SRAM 4KBIT 6FLIPCHIP
DS2423D/T&R 功能描述:IC SRAM 4KBIT 6FCHIP RoHS:否 類別:集成電路 (IC) >> 存儲(chǔ)器 系列:- 標(biāo)準(zhǔn)包裝:150 系列:- 格式 - 存儲(chǔ)器:EEPROMs - 串行 存儲(chǔ)器類型:EEPROM 存儲(chǔ)容量:4K (2 x 256 x 8) 速度:400kHz 接口:I²C，2 線串口 電源電壓:2.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:8-DFN（2x3） 包裝:管件 產(chǎn)品目錄頁(yè)面:1445 (CN2011-ZH PDF)
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