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参数资料
| 型号： | DS2251T-64-16# |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 21/22页 |
| 文件大小： | 0K |
| 描述： | IC MCU 64KB 16MHZ 72-SIMM |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 系列： | DS225x |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 16MHz |
| 连通性： | SIO，UART/USART |
| 外围设备： | 电源故障复位，WDT |
| 输入/输出数： | 32 |
| 程序存储器类型： | SRAM |
| RAM 容量： | 64K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 振荡器型： | 外部 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 72-SIMM |
| 包装： | 托盘 |
DS2251T
8 of 22
DS2251T MEMORY MAP WITH (PES = 1) Figure 4
POWER MANAGEMENT
The DS2251T monitors VCC to provide power-fail reset, early warning power-fail interrupt, and
switchover to lithium backup. It uses an internal band-gap reference in determining the switch points.
These are called VPFW, VCCMIN, and VLI, respectively. When VCC drops below VPFW, the DS2251T will
perform an interrupt vector to location 2Bh if the power-fail warning is enabled. Full processor operation
continues regardless. When power falls further to VCCMIN, the DS2251T invokes a reset state. No further
code execution will be performed unless power rises back above VCCMIN. All decoded chip enables and
the R/ W signal go to an inactive (logic 1) state. The VRST signal will be driven to a logic 0. VCC is still
the power source at this time. When VCC drops further to below VLI, internal circuitry will switch to the
built-in lithium cell for power. The majority of internal circuits will be disabled and the remaining
nonvolatile states will be retained. PF will be driven to a logic 0. The Secure Microcontroller User’s
Guide has more information on this topic. The trip points VCCMIN and VPFW are listed in the electrical
specifications.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2251T-64-16# | 功能描述:模块化系统 - SOM 64K Soft MCU Module RoHS:否 制造商:Digi International 外观尺寸:ConnectCore 9P 处理器类型:ARM926EJ-S 频率:150 MHz 存储容量:8 MB, 16 MB 存储类型:NOR Flash, SDRAM 接口类型:I2C, SPI, UART 工作电源电压:3.3 V 最大工作温度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in |
| DS2252-08-08 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
| DS2252-08-12 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
| DS2252-08-16 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
| DS2252-128-08 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
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