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参数资料
| 型号： | DS2441 |
| 英文描述： | 1-Cell Li-Ion Battery Manager |
| 中文描述： | 1节锂离子电池管理器 |
| 文件页数： | 14/29页 |
| 文件大小： | 134K |
| 代理商： | DS2441 |
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DS2441
14 of 29
MEMORY
The DS2441 contains four 32-byte pages of memory. See the page descriptions below, the Memory Map
in Figure 11, and the detailed register descriptions on the pages that follow for more information.
Locations labeled “Reserved” in the Memory Map always read out FFh. Locations labeled “unused”
always read out 00h.
Page 0
contains the Control, Delay Timing, Discharge Termination Warning, and Manufacturing ID
registers. All of these registers are read/write except the read-only Manufacturing ID. This entire page
can be locked against accidental write access by setting the LOCK bit of the Status Register to logic 1.
During a power-on reset (POR) event, the DS2441 loads each of these registers with default values stored
in laser ROM and set the Status Register LOCK bit. See the Discharge Termination Warning section and
the sections on the Control, Delay Timing and Manufacturing ID registers for more details.
Page 1
is read only and contains the Status Register, the Temperature Register and the Voltage Register.
See the Temperature Measurement, Voltage Measurement and Status Register sections for more
information.
Page 2
contains the Configuration Register, the Current Register and the ICA, CCA and DCA. During a
power-on reset event the DS2441 loads the Configuration Register with its default value stored in laser
ROM. The ICA, CCA and DCA registers power-on in a random state and should be set to a known value
by the host system. See the Current Measurement, Current Accumulators and Configuration Register
sections for more details.
Page 3
contains 32 bytes of user memory. All memory locations in this page power-on in a random state.
Since the registers and memory in the DS2441 are full-CMOS SRAM, battery pack data is maintained by
battery power even during undervoltage conditions. If the battery pack is externally short circuited,
causing temporary battery voltage collapse, power circuitry in the DS2441 maintains acceptable voltage
to the memory for at least t
SCD
to allow time for the lithium-ion protection circuitry to turn off the
discharge FET and remove the cause of the supply voltage collapse.
All registers and user memory in the DS2441 can be read and written under all power supply conditions,
including loss of voltage on the V
DD
pin, via the parasite-powered 1-Wire bus.
相关PDF资料 |
PDF描述 |
|---|---|
| DS2450 | 1-Wire Quad A/D Converter |
| DS2450S | 1-Wire Quad A/D Converter |
| DS2480 | Serial 1.Wire Line Driver |
| DS2480S | Serial 1.Wire Line Driver |
| DS2490 | USB to 1-Wire Bridge Chip |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2442 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Battery Management |
| DS245 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Octal Bus Transceiver |
| DS2450 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:1-Wire Quad A/D Converter |
| DS2450S | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| DS2450S/T&R | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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