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參數(shù)資料
| 型號： | DS2251T-64-16 |
| 英文描述： | CONNECTOR ACCESSORY |
| 中文描述： | 連接器附件 |
| 文件頁數(shù)： | 8/20頁 |
| 文件大?。?/td> | 654K |
| 代理商： | DS2251T-64-16 |
DS2251T
8 of 20
DS2251T MEMORY MAP WITH (PES=1)
Figure 4
POWER MANAGEMENT
The DS2251T monitors V
CC
to provide Power-fail Reset, early warning Power-fail Interrupt, and switch-
over to lithium backup. It uses an internal band-gap reference in determining the switch points. These are
called V
PFW
, V
CCMIN
, and V
LI
respectively. When V
CC
drops below V
PFW
, 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 V
CCMIN
, the DS2251T invokes a reset state. No further code
execution will be performed unless power rises back above V
CCMIN
. 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. V
CC
is still the
power source at this time. When V
CC
drops further to below V
LI
, 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 User’s Guide has more information on this
topic. The trip points V
CCMIN
and V
PFW
are listed in the electrical specifications.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2251T-64-16# | 功能描述:模塊化系統(tǒng) - SOM 64K Soft MCU Module RoHS:否 制造商:Digi International 外觀尺寸:ConnectCore 9P 處理器類型:ARM926EJ-S 頻率:150 MHz 存儲容量:8 MB, 16 MB 存儲類型:NOR Flash, SDRAM 接口類型:I2C, SPI, UART 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in |
| DS2252-08-08 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| DS2252-08-12 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| DS2252-08-16 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| DS2252-128-08 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
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