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参数资料
| 型号： | DS2252T-64-16 |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Microcontroller |
| 英文描述： | 8-BIT, MICROCONTROLLER, SMA40 |
| 封装： | SIMM-40 |
| 文件页数： | 13/15页 |
| 文件大小： | 125K |
| 代理商： | DS2252T-64-16 |
DS2252T
021998 7/15
DS2252T MEMORY MAP WITH (PES=1) Figure 4
DATA MEMORY (MOVX)
64K
16K
REAL–TIME
CLOCK
PROGRAM MEMORY
NV RAM
PROGRAM
FFFFh
C000h
8000h
4000h
0000h
PARTITION
NOT ACCESSIBLE
POWER MANAGEMENT
The DS2252T monitors VCC to provide Power–fail
Reset, early warning Power–fail Interrupt, and switch
over to lithium backup. It uses an internal band–gap ref-
erence in determining the switch points. These are
called VPFW, VCCMIN, and VLI respectively. When VCC
drops below VPFW, the DS2252T will perform an inter-
rupt vector to location 2Bh if the power–fail warning was
enabled. Full processor operation continues regard-
less. When power falls further to VCCMIN, the DS2252T
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 inac-
tive (logic 1) state. VCC is still the power source at this
time. When VCC drops further to below VLI, internal cir-
cuitry 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.
The
User’s Guide has more information on this topic. The trip
points VCCMIN and VPFW are listed in the electrical spec-
ifications.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2252T-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 |
| DS2252T8-12 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
| DS2252T8-16 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
| DS2253T-612 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| DS2255-10 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Converter IC |
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