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参数资料
| 型号： | DS2252T |
| 英文描述： | Secure Microcontroller Module |
| 中文描述： | 安全微控制器模块 |
| 文件页数： | 7/15页 |
| 文件大小： | 257K |
| 代理商： | DS2252T |
DS2252T
7 of 15
DS2252T MEMORY MAP WITH (PES=1)
Figure 4
POWER MANAGEMENT
The DS2252T 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 DS2252T 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 DS2252T 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. 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. The User’s Guide
has more information on this topic. The trip points V
CCMIN
and V
PFW
are listed in the electrical
specifications.
NV RAM
PROGRAM
PROGRAM MEMORY
DATA MEMORY (MOVX)
FFFFh --
0000h --
PARTITION
= NOT ACCESSIBLE
REAL-TIME
CLOCK
C000h --
B000h --
4000h --
-- 64K
-- 16K
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2252T_06 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Soft Microcontroller Module |
| DS2252T_1 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Secure Microcontroller Module |
| DS2252T08-08 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
| DS2252T128-08 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
| DS2252T-128-12 | 功能描述:模块化系统 - SOM 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 |
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