- 您现在的位置：买卖IC网 > PDF目录16240 > DS2780E+ (Maxim Integrated Products)IC FUEL GAUGE BATT 8TSSOP PDF资料下载
参数资料
| 型号： | DS2780E+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 28/31页 |
| 文件大小： | 0K |
| 描述： | IC FUEL GAUGE BATT 8TSSOP |
| 产品培训模块： | 1-Wire Communications Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 功能： | 燃料，电量检测计/监控器 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 管件 |
| 产品目录页面： | 1436 (CN2011-ZH PDF) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页当前第28页第29页第30页第31页
DS2780 Standalone Fuel Gauge IC
1-WIRE SIGNALING
The 1-Wire bus requires strict signaling protocols to ensure data integrity. The four protocols used by the DS2780
are as follows: 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 DS2780 is shown in Figure 22. A
presence pulse following a reset pulse indicates that the DS2780 is ready to accept a net address command. The
bus master transmits (Tx) a reset pulse for t RSTL . The bus master then releases the line and goes into receive mode
(Rx). The 1-Wire bus line is then pulled high by the pullup resistor. After detecting the rising edge on the DQ pin,
the DS2780 waits for t PDH and then transmits the presence pulse for t PDL .
Figure 22. 1-Wire Initialization Sequence
t RSTL
t PDH
t PDL
t RSTH
PACK
DQ
LINE TYPE LEGEND:
+
PACK-
BUS MASTER ACTIVE LOW
BOTH BUS MASTER AND
DS2780 ACTIVE LOW
DS2780 ACTIVE LOW
RESISTOR PULLUP
WRITE-TIME SLOTS
A write-time slot is initiated when the bus master pulls the 1-Wire bus from a logic-high (inactive) level to a logic-low
level. There are two types of write-time slots: write 1 and write 0. All write-time slots must be t SLOT in duration with a
1 ? s minimum recovery time, t REC , between cycles. The DS2780 samples the 1-Wire bus line between 15 ? s and
60 ? s (between 2 ? s and 6 ? s for overdrive speed) 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 23). For the bus master to generate a write 1
time slot, the bus line must be pulled low and then released, allowing the line to be pulled high within 15 ? s (2 ? s for
overdrive speed) after the start of the write-time slot. For the host to generate a write 0 time slot, the bus line must
be pulled low and held 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 a logic-low level.
The bus master must keep the bus line low for at least 1 ? s and then release it to allow the DS2780 to present valid
data. The bus master can then sample the data t RDV from the start of the read-time slot. By the end of the read-time
slot, the DS2780 releases the bus line and allows it to be pulled high by the external pullup resistor. All read-time
slots must be t SLOT in duration with a 1 ? s minimum recovery time, t REC , between cycles. See Figure 23 for more
information.
28 of 31
相关PDF资料 |
PDF描述 |
|---|---|
| M1KXK-3036R | IDC CABLE - MPK30K/MC34M/X |
| RBM08DSEF-S13 | CONN EDGECARD 16POS .156 EXTEND |
| RCM22DCBS | CONN EDGECARD 44POS R/A .156 SLD |
| RCA18DTMS | CONN EDGECARD 36POS R/A .125 SLD |
| RSA10DTKS | CONN EDGECARD 20POS DIP .125 SLD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2780E/R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel Gauge IC |
| DS2780E/T | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel Gauge IC |
| DS2780E/T&R | 制造商:Maxim Integrated Products 功能描述:STANDALONG FUELD CAUGE TSSOP T&R - Tape and Reel |
| DS2780E/T&R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel Gauge IC |
| DS2780E/TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Standalone Fuel Gauge IC |
发布紧急采购，3分钟左右您将得到回复。