Datasheet > DS2250T

DS2250T

更新时间： 2024-10-28 22:40:35

品牌	Logo	应用领域
达拉斯 - DALLAS		微控制器
页数	文件大小	规格书
20页	596K
描述
Soft Microcontroller Module

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DS2250T 数据手册

DS2250(T)

Soft Microcontroller Module

www.dalsemi.com

FEATURES

ꢀ 8-bit 8051-compatible microcontroller adapts

to task-at-hand:

PIN ASSIGNMENT

8, 32, or 64 kbytes of nonvolatile RAM

for program and/or data memory storage

Initial downloading of software in end

system via on-chip serial port

Capable of modifying its own program

and/or data memory in end use

40-Pin SIMM

ꢀ High-reliability operation:

Maintains all nonvolatile resources for 10

years in the absence of V_CC

Power-fail reset

Early warning power-fail interrupt

Watchdog timer

ꢀ Software Security Feature:

Executes encrypted software to prevent

unauthorized disclosure

ꢀ On-chip, full-duplex serial I/O ports

ꢀ Two on-chip timer/event counters

ꢀ 32 parallel I/O lines

ꢀ Compatible with industry standard 8051

instruction set

ꢀ Permanently powered real time clock

DESCRIPTION

The DS2250(T) Soft Microcontroller Module is a fully 8051-compatible 8-bit CMOS microcontroller that

offers “softness” in all aspects of its application. This is accomplished through the comprehensive use of

nonvolatile technology to preserve all information in the absence of system V_CC. The internal

program/data memory space is implemented using 8, 32, or 64 kbytes of nonvolatile CMOS SRAM.

Furthermore, internal data registers and key configuration registers are also nonvolatile. An optional real

time clock gives permanently powered timekeeping. The clock keeps time to a hundredth of a second

using an on-board crystal. All nonvolatile memory and resources are maintained for over 10 years at

room temperature in the absence of power.

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