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參數(shù)資料
| 型號： | DS2437 |
| 英文描述： | Smart Battery Monitor |
| 中文描述： | 智能電池監(jiān)視器 |
| 文件頁數(shù)： | 14/31頁 |
| 文件大?。?/td> | 1215K |
| 代理商： | DS2437 |
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DS2437
14 of 31
MEMORY MAP
The DS2437’s memory is organized as shown in Figure 7. The memory consists of a scratchpad RAM
and storage SRAM/EEPROM. The scratchpad helps insure data integrity when communicating over the
1-Wire bus. Data is first written to the scratchpad where it can be read back. After the data has been
verified, a copy scratchpad command will transfer the data to the appropriate page in memory (pages 0-2
are primarily volatile SRAM, pages 3-7 are EEPROM). This process insures data integrity when
modifying the memory.
The DS2437’s memory is organized as 64 bytes of memory in eight 8-byte pages. Each page has its own
scratchpad space, organized as 8 bytes of memory. When reading a scratchpad, there is a 9
th
byte which
may be read with a Read Scratchpad command. This byte contains a cyclic redundancy check (CRC)
byte, which is the CRC over all of the 8 bytes in the currently selected scratchpad. This CRC is
implemented in the fashion described in the section titled “CRC Generation.”
Page 0 (00h)
The first page contains the most frequently accessed information of the DS2437, and most locations are
volatile read-only bytes with the exception of the Status / Configuration Register (Byte 0).
The Status / Configuration Register is a nonvolatile read/write byte which defines which features of the
DS2437 are enabled and how they will function. The register is formatted as follows:
IAD =
Current A/D Control Bit. 1 = the current A/D and the ICA are enabled, and current measurements
will be taken at the rate of 32 Hz; 0 = the current A/D and the ICA have been disabled.
CA =
Current Accumulator Configuration. 1 = CCA/DCA are enabled, and data will be stored and can be
retrieved from page 7, bytes 4-7; 0 = CCA/DCA is disabled, and page 7 can be used for general
EEPROM storage.
E2 =
Current Accumulator Shadow Selector bit. 1 = CCA/DCA counter data will be shadowed to
EEPROM each time the respective register is incremented by 0.32C; 0 = CCA/DCA counter data will not
be shadowed to EEPROM. The CCA/DCA could be lost as the battery pack becomes discharged. If the
CA bit in the status/configuration register is set to 0, the E2 bit will have no effect on the DS2437
functionality.
AD =
Voltage A/D Input Select Bit. 1 = the battery input (VDD) is selected as the input for the DS2437
voltage A/D converter; 0 = the general purpose A/D input (VAD) is selected as the voltage A/D input.
For either setting, a Convert V command will initialize a voltage A/D conversion.
TB =
Temperature Busy Flag. 1 = temperature conversion in progress; 0 = temperature conversion
complete.
NVB =
Nonvolatile Memory Busy Flag. 1 = Copy from Scratchpad to EEPROM in progress; 0 =
Nonvolatile memory not busy. A copy to EEPROM may take from 2 ms to 10 ms (taking longer at lower
supply voltages).
相關PDF資料 |
PDF描述 |
|---|---|
| DS2438 | Smart Battery Monitor |
| DS2438Z | Smart Battery Monitor |
| DS2442 | Battery Management |
| DS2501 | 1A VERY LOW DROPOUT VOLTAGE REGULATORS |
| DS2502 | 1 kbit Add-Only Memory |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS2437K | 制造商:Maxim Integrated Products 功能描述:EVALUATION KIT BATTERY MONITO |
| DS2437S | 功能描述:IC MONITOR SMART BATTERY 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標準包裝:1 系列:- 功能:充電管理 電池化學:鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應商設備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
| DS2437S/T&R | 制造商:Maxim Integrated Products 功能描述:SMART BATTERY MONITOR 16SSOP T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC MONITOR SMART BATTERY 16-SSOP |
| DS2437S/T&R/ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| DS2437S/T&R | 功能描述:IC MONITOR SMART BATTERY 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標準包裝:1 系列:- 功能:充電管理 電池化學:鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應商設備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
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