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| 型号： | DS2790G+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 25/41页 |
| 文件大小： | 0K |
| 描述： | IC FUEL GAUGE BATT 28-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 燃料，电量检测计/监控器 |
| 电池化学： | 锂离子（Li-Ion） |
| 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： | 28-TDFN |
| 供应商设备封装： | 28-TDFN-EP（8x4） |
| 包装： | 带卷 (TR) |
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DS2790 Programmable 1-Cell Li-Ion Fuel Gauge and Protector
PROGRAMMABLE TIMER/COUNTER
The Timer/Counter block operates as a simple 8-bit interval timer or counter. The start value is programmable and
is automatically reloaded when a rollover occurs. The TMOD bit in the TCC register selects between the counter
and timer modes. In the counter mode, external events on the P0.3 pin are counted. In the timer mode, OSCA
clock source cycles are counted. The OSCA clock and brown-out detectors continue to run if the CPU is stopped.
Figure 8. Timer / Counter Block Diagram
The timer low byte (TLOW) is used to count input events, while the timer high byte (THI) is used to store the reload
value. Firmware must initialize TLOW and THI with the same value for the first count to be the same as succeeding
counts. TLOW counts up until FFh is reached, it is then automatically reloaded with the value in THI. THI remains
unchanged unless modified by firmware. The clock source is selected with TTCK[1:0] bits. The following table
describes the possible resolution and range of the timer.
Table 9. Programmable Timer Configuration
TMOD
1
1
1
1
0
TTCK[1:0]
00
01
10
11
N/A
CLOCK PERIOD
14.3μs
343μs
6.86ms
220ms
TIMER RANGE ( t * 2 8 )
3.66ms
87.9ms
1.76s
56.3s
Counter Mode
2-WIRE SLAVE PERIPHERAL INTERFACE MODULE
A 2-wire serial-peripheral interface for interconnection with external devices is incorporated into the DS2790. The
2-Wire Slave (TWS) peripheral allows interrupt driven I 2 C or SMBus device communication with a minimal amount
of CPU overhead. A Transmit/Recieve Data register (TWSTXD/RXD) handles byte level data transfers and the
TWS FIFO register (TWSFIF) monitors the usage of the transmit and receive buffers. The 2-Wire Slave Command
register (TWSCMD) maintains the command byte of every communication sequence for use by the MAXQ20 core.
Configuration of the 2-wire interface is handled through the TWS Configuration register (TWSCFG) allowing system
software to change the DS2790’s slave address, control handshaking on the clock line, and control bus timeout
settings. The asynchronous interface between the TWS and MAXQ20 core is handled by TWS generated
interrupts reported in the Interrupt register (TWSINT) and controlled in Interrupt Mask Register (TWSIM).
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| DS2792G+ | 功能描述:IC PROG FUEL GAUGE W/UART 28TDFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:1 系列:- 功能:充电管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
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| DS2792G+T&R | 功能描述:IC FUEL GAUGE BATT 28-TDFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:1 系列:- 功能:充电管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
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| DS280BR810ZBFT | 功能描述:Buffer, ReDriver 8 Channel 28Gbps 8-SOIC 制造商:texas instruments 系列:- 包装:剪切带（CT） 零件状态:有效 类型:缓冲器，转接驱动器 应用:- 输入:CML 输出:CML 数据速率（最大值）:28Gbps 通道数:8 延迟时间:- 信号调节:- 电容 - 输入:- 电压 - 电源:2.5V 电流 - 电源:- 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商器件封装:8-SOIC 标准包装:1 |
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