參數(shù)資料
型號： DS2422
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： DRAM
英文描述： 1K-Bit 1-Wire RAM with Counters(帶計數(shù)器的1K位1線串行RAM)
中文描述： 1K X 1 STANDARD SRAM, PDSO6
封裝： 3.70 X 4 X 1.50 MM, TSOC-6
文件頁數(shù)： 1/23頁
文件大?。?/td> 146K
代理商： DS2422
DS2422/DS2423
1K/4K–Bit 1–Wire
TM
RAM with Counters
DS2422/DS2423
PRELIMINARY
021998 1/23
FEATURES
4096 bits of SRAM (DS2423), 1024 bits with the
DS2422
Four 32–bit read–only counters (DS2423), three
counters with the DS2422
Active–low external trigger inputs for two of the count-
ers with on–chip debouncing compatible with reed
and Wiegand switches
Unique, factory–lasered and tested 64–bit registra-
tion number (8–bit family code + 48–bit serial number
+ 8–bit CRC tester) assures absolute traceability
because no two parts are alike
Memory partitioned into 16 256–bit pages in DS2423,
(4 pages in DS2422), for packetizing data
256–bit scratchpad with strict read/write protocols
ensures integrity of data transfer
On–chip 16–bit CRC generator for safeguarding data
transfers
Built–in multidrop controller ensures compatibility
with other MicroLAN
TM
products
Directly connects to a single port pin of a microproces-
sor and communicates at up to 16.3k bits per second
Overdrive mode boosts communication speed to
142k bits per second
8–bit family code specifies device communication
requirements to reader
Presence detector acknowledges when reader first
applies voltage
Compact, low cost 6–pin TSOC surface mount pack-
age
Reads, writes and counts over a wide voltage range
of 2.8V to 5.5V from –40
°
C to +85
°
C
PIN ASSIGNMENT
1
2
3
6
5
4
TSOC PACKAGE
TOP VIEW
3.7 X 4.0 X 1.5 mm
SIDE VIEW
PIN DESCRIPTION
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Ground
Data
Vbat
NC
Input channel B
Input channel A
ORDERING INFORMATION
contact factory
DESCRIPTION
The DS2422/DS2423 1–Wire
TM
RAM With Counters
(hereafter referred to as DS242X) is a fully static, read/
write memory for battery operation in a low cost 6–lead
TSOC surface mount package. The memory is orga-
nized as sixteen pages (DS2423) or four pages
(DS2422) of 256 bits each. In addition, the device has
four (DS2423) or three (DS2422) counters, two of them
with external trigger inputs called A and B. Each of the
counters is associated with a memory page. A counter
without external trigger input increments each time data
is written to the page it is associated with (Write Cycle
Counter). The counters triggered by inputs A and B,
respectively, increment with every low–going pulse on
their input. All counters are read–only. They are auto-
matically cleared to zero when the battery is connected.
相關(guān)PDF資料
PDF描述
DS2423 4K-Bit 1-Wire RAM with Counters(帶計數(shù)器的4K位1線串行RAM)
DS2450 1-Wire Quad A/D Converter(1線串行四路A/D轉(zhuǎn)換器)
DS2480 Serial 1-Wire Line Driver(1線串行線驅(qū)動器)
DS2505-UNW UniqueWare Add-only Memory(專用只加存儲器)
DS2506-UNW UniqueWare Add-only Memory(專用只加存儲器)
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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