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| 型号： | DS2790G+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/41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
Activating the JTAG interface and loading the Test Access Port (TAP) with the system programming instruction
invokes the bootstrap loader for use over the JTAG interface. Setting the SPE bit to 1 during reset through the
JTAG interface executes the bootstrap-loader-mode program that resides in the utility ROM. When programming is
complete, the bootstrap loader can clear the SPE bit and reset the device, allowing the device to bypass the utility
ROM and begin execution of the application software.
Performing a program request over the 2-wire interface also invokes the bootstrap loader. The user must
successfully complete a password match (If PWL = 1). The bootstrap loader functions are then fully supported over
the 2-wire interface. When programming is complete, the exit loader function is used to reset the DS2790 and
begin execution of the application software.
The following bootstrap loader functions are supported:
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Information Commands
Load EEPROM Code and Data
Dump EEPROM Code and Data
CRC EEPROM Code and Data
Verify EEPROM Code and Data
Erase EEPROM Code and Data
In-Application Programming
The in-application programming feature allows the microcontroller to modify its own EEPROM program memory.
This allows on-the-fly software updates in mission-critical applications that cannot afford downtime. Alternatively, it
allows the application to develop custom loader software that can operate under the control of the application
software. The utility ROM contains firmware-accessible EEPROM programming functions that erase and program
EEPROM memory. These functions are described in detail in the MAXQ Family User's Guide: DS2790
Supplement .
SYSTEM TIMING
The DS2790 generates its 1MHz instruction clock (OSCI) internally. This quick starting oscillator is used for
instruction fetch and execution by the MAXQ20 core. The analog oscillator (OSCA) is a band-gap based RC
oscillator that is trimmed to better than 2% accuracy. The analog clock runs independent of OSCI and serves as
the clock source for the ADC, watchdog timer, interval timer, and 2-wire timeouts.
OSCI is enabled through either a system interrupt or system POR and disabled through a system STOP. A voltage
brown out detection circuit disables OSCI if V DD falls below V BO . Once V DD raises above V BO , a hysteresis circuit
waits t SU:OSCI before re-enabling OSCI. OSCA is enabled by the Watchdog Timer signals EWDI or EWT, the Timer
/ Counter (TMOD), or by the protection circuitry (PMM[1:0]).
Figure 4. System Clocks
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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 |
| DS2792G+T&R | 制造商:Maxim Integrated Products 功能描述:IC FUEL GAUGE BATT 28-TDFN |
| 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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