Datasheet > DS2250_1

DS2250_1

更新时间： 2024-10-29 04:15:11

品牌	Logo	应用领域
达拉斯 - DALLAS		微控制器
页数	文件大小	规格书
19页	120K
描述
Soft Microcontroller Module

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DS2250_1 数据手册

DS2250(T)

Soft Microcontroller Module

FEATURES

PIN ASSIGNMENT

• 8–bit8051compatiblemicrocontrolleradaptstotask–

at–hand:

–

8K, 32K, or 64K bytes 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

–

Power–fail reset

Early warning power–fail interrupt

Watchdog timer

• Software Security Feature:

–

Executes encrypted software to prevent unau-

thorized 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

8051compatible8–bitCMOSmicrocontrollerthatoffers

“softness” in all aspects of its application. This is ac-

complishedthroughthecomprehensiveuseofnonvola-

tile technology to preserve all information in the ab-

sence of system V

memory space is implemented using 8K, 32K, or 64K

bytes of nonvolatile CMOS SRAM. Furthermore, inter-

nal data registers and key configuration registers are

also nonvolatile. An optional real time clock gives per-

manently 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.

The internal program/data

patents and other intellectual property rights, please refer to

Dallas Semiconductor data books.

121395 1/19

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