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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： | 24/29页 |
| 文件大小： | 134K |
| 代理商： | DS2441 |
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DS2441
24 of 29
FUNCTION COMMANDS
Table 11
Command
Lock Register
Description
Disables write access
to Page 0
Enables write access
to Page 0
Reads data from
Page XX
(XX = 00 to 03)
Writes data to
Page XX
(XX = 00, 02, 03)
Recalls Control,
Timing, DTW, Mfg. ID
and Configuration
register defaults
Controls or senses
PIO pin state
Command
Protocol
43h
Bus State After
Command Protocol
Idle
Bus Data
none
Unlock
Register
44h
Idle
none
Read Register
BEh, XX
Master R
X
up to 32 bytes
of register data
Write Register
4Eh, XX
Master Tx
up to 32 bytes
of register data
Recall Setup
B8h
Idle
none
Channel
Access
F5h
Master R
X
(
Master T
X
(
W
W
R/
R/
=1)
=0)
unlimited reads
or writes
I/0 SIGNALING
The 1-Wire bus requires strict signaling protocols to insure data integrity. The four protocols used by
the DS2441 are: the initialization sequence (Reset Pulse followed by Presence Pulse), Write 0, Write 1,
and Read Data. All of these types of signaling except the Presence Pulse are initiated by the bus master.
The initialization sequence required to begin any communication with the DS2441 is shown in Figure
19. A Presence Pulse following a Reset Pulse indicates the DS2441 is read to accept a ROM Command.
The bus master transmits (T
X
) a Reset Pulse for t
RSTL
. The bus master then releases the line and goes
into receive mode (R
X
). The 1-Wire bus line is then pulled high by the pullup resistor. After detecting
the rising edge on the DQ pin, the DS2441 waits for t
PDH
and then transmits the Presence Pulse for t
PDL
.
1-WIRE INITIALIZATION SEQUENCE (RESET PULSE AND PRESENCE
PULSE)
Figure 19
t
RSTL
t
PDL
t
RSTH
t
PDH
V
CC
GND
LINE TYPE LEGEND:
Bus master active low
DS2441 active low
Resistor pullup
Both bus master and
DS2441 active low
DQ
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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