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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： | 25/29页 |
| 文件大小： | 134K |
| 代理商： | DS2441 |
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DS2441
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WRITE TIME SLOTS
A write time slot is initiated when the bus master pulls the 1-Wire bus line from a logic high (inactive)
level to a logic low level. There are two types of write time slots: Write 1 time slots and Write 0 time
slots. All write time slots must be t
SLOT
(60 to 120
μ
s) in duration with a 1
μ
s minimum recovery time,
t
REC
, between cycles. The DS2441 samples the 1-Wire bus line between 15 and 60
μ
s after the line falls.
If the line is high when sampled, a Write 1 occurs. If the line is low when sampled, a Write 0 occurs (see
Figure 20). For the bus master to generate a Write 1 time slot, the bus line must be pulled to a logic low
level and then released, allowing the line to pull up to a logic high level within 15
μ
s after the start of the
write time slot. For the host to generate a Write 0 time slot, the bus line must be pulled to a logic low
level and remain low for the duration of the write time slot.
READ TIME SLOTS
A read time slot is initiated when the bus master pulls the 1-Wire bus line from a logic high level to logic
low level. The bus master must keep the bus line low for at least 1
μ
s and then release it to allow the
DS2441 to present valid data. The bus master can then sample the data t
RDV
(15
μ
s) from the start of the
read time slot. By the end of the read time slot, the DS2441 releases the bus line and allow it to be pulled
high by the external pullup resistor. All read time slots must be t
SLOT
(60 to 120
μ
s) in duration with a 1
μ
s minimum recovery time, t
REC
, between cycles. See Figure 20 for more information.
1-WIRE WRITE AND READ TIME SLOTS
Figure 20
t
SLOT
t
LOW0
>1
μ
s
V
CC
GND
WRITE 0 SLOT
DS2441 Sample Window
TYP
MIN
MAX
15
μ
s
15
μ
s
30
μ
s
WRITE 1 SLOT
t
SLOT
t
LOW1
t
REC
DS2441 Sample Window
TYP
MIN
MAX
15
μ
s
15
μ
s
30
μ
s
t
SLOT
>1
μ
s
V
CC
GND
READ 0 SLOT
t
RDV
READ 1 SLOT
t
SLOT
t
REC
DQ
DQ
LINE TYPE LEGEND:
Bus master active low
DS2441 active low
Resistor pullup
Both bus master and
DS2441 active low
Master Sample Window
Master Sample Window
t
RDV
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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