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DS2251

Features: 8051-compatible microcontroller adapts to itstask- 32K, 64K, or 128K bytes of nonvolatileSRAM for program and/or data storage- In-system programming via on-chip serialport- Capable of modifying its own program ordata memory in the end system- Provides separate Byte-wide bus forperipheral...

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SeekIC No. : 004328830 Detail

DS2251: Features: 8051-compatible microcontroller adapts to itstask- 32K, 64K, or 128K bytes of nonvolatileSRAM for program and/or data storage- In-system programming via on-chip serialport- Capable of modi...

DS2251 Data Sheet

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Part Number:
DS2251
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/4/28

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Product Details

Description



Features:

 8051-compatible microcontroller adapts to itstask
-  32K, 64K, or 128K bytes of nonvolatileSRAM for program and/or data storage
-  In-system programming via on-chip serialport
-  Capable of modifying its own program ordata memory in the end system
-  Provides separate Byte-wide bus forperipherals
-  Performs CRC-16 check of NV RAMmemory
  High-reliability operation
-  Maintains all nonvolatile resources forover 10 years in the absence of power
-  Power-fail reset
-  Early Warning Power-fail Interrupt
-  Watchdog Timer
-  Lithium backed memory rememberssystem state
-  Precision reference for power monitor
  Fully 8051-compatible
-  128 bytes scratchpad RAM
-  Two timer/counters
-  On-chip serial port
-  32 parallel I/O port pins
  Permanently powered real time clock


Pinout

Connection Diagram


Specifications

Voltage on Any Pin Relative to Ground ........   -0.3V to (VCC + 0.5V)
Voltage on VCC Relative to Ground...................... ..  -0.3V to +6.0V
Operating Temperature  ..............-..............................40 to +85
Storage Temperature2..............................................-55 to +125
Soldering Temperature ................................... 260 for 10 seconds


Description

The DS2251T 128k Soft Microcontroller Module is an 8051-compatible microcontroller module based onnonvolatile RAM technology. It is designed for systems that need large quantities of nonvolatile memory.Like other members of the Secure Microcontroller family, DS2251 provides full compatibility with the 8051instruction set, timers, serial port, and parallel I/O ports. By using NV RAM instead of ROM, the user canprogram, then reprogram the microcontroller while in-system. The application software can even changeits own operation. This allows frequent software upgrades, adaptive

programs, customized systems, etc.In addition, by using NV RAM, the DS2251T is ideal for data loggingapplications. The powerful realtime clock includes interrupts for time stamp and date. It keeps timeto one-hundredth of seconds using itsonboard 32 kHz crystal.




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