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Maxim > Products > [Memories: Volatile, NV, Multi-Function] 
DS1230AB, DS1230Y
256k Nonvolatile SRAM


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 288kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The DS1230 256k Nonvolatile (NV) SRAMs are 262,144-bit, fully static, nonvolatile SRAMs organized as 32,768 words by 8 bits. Each NV SRAM has a self-contained lithium energy source and control circuitry which constantly monitors VCC for an out-of-tolerance condition. When such a condition occurs, the lithium energy source is automatically switched on and write protection is unconditionally enabled to prevent data corruption. DIP-package DS1230 devices can be used in place of existing 32k x 8 static RAMs directly conforming to the popular bytewide 28-pin DIP standard. The DIP devices also match the pinout of 28256 EEPROMs, allowing direct substitution while enhancing performance. DS1230 devices in the Low Profile Module package are specifically designed for surface-mount applications. There is no limit on the number of write cycles that can be executed and no additional support circuitry is required for microprocessor interfacing.

This product contains lithium-metal batteries. See applicable regulations for transport requirements for batteries in equipment.

Key Features
  • 10 years minimum data retention in the absence of external power
  • Data is automatically protected during power loss
  • Replaces 32k x 8 volatile static RAM, EEPROM or Flash memory
  • Unlimited write cycles
  • Low-power CMOS
  • Read and write access times as fast as 70ns
  • Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time
  • Full ±10% VCC operating range (DS1230Y)
  • Optional ±5% VCC operating range (DS1230AB)
  • Optional industrial temperature range of -40°C to +85°C, designated IND
  • JEDEC standard 28-pin DIP package
  • PowerCap Module (PCM) package
    • Directly surface-mountable module
    • Replaceable snap-on PowerCap provides lithium backup battery
    • Standardized pinout for all nonvolatile SRAM products
    • Detachment feature on PowerCap allows easy removal using a regular screwdriver
  • Underwriters Laboratories (UL®) Recognized

Diagram
DS1230AB, DS1230Y: Pin Assignment
Pin Assignment

Application Notes
  • Application Note 170: Adding Nonvolatile SRAM into Embedded Systems - DS1230AB, DS1230Y
  • Application Note 202: NV SRAM Frequently Asked Questions - DS1230AB, DS1230Y
  • Application Note 1066: Tech. Brief 39: NV SRAM Cross Reference Table - DS1230AB, DS1230Y
  • Application Note 3759: Timing Considerations When Using NVSRAM - DS1230AB, DS1230Y
  • Application Note 4006: NVSRAM Device Programmers - DS1230AB, DS1230Y
  • Application Note 4289: Low-Temperature Data Retention in Nonvolatile SRAM - DS1230AB, DS1230Y
  • Application Note 4392: How to Replace a DS1213 SmartSocket with an Equivalent-Density NV SRAM Module - DS1230AB

    • Reliability Reports
  		• Reliability Report: DS1230AB.pdf
  		• Request Reliability Report for:
  		• Underwriters Laboratories (UL®) Recognized

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-50 of 50

    DS1230AB Notes Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    DS1230AB-100+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230AB-120+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230AB-70+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230AB-85+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230AB-200IND+    
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230AB-120IND+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230AB-70IND+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230AB-150+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230AB-200+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230AB-100   5% Tolerance, 100ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230AB-120   5% Tolerance, 120ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230AB-150   5% Tolerance, 150ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230AB-200   5% Tolerance, 200ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230AB-70   5% Tolerance, 70ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230AB-85   5% Tolerance, 85ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230AB-120IND   5% Tolerance, 120ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230AB-200IND   5% Tolerance, 200ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230AB-70IND   5% Tolerance, 70ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230ABP-100+  
    		Active PCAP;34 pin;596.9 mm²
    Outline Drawing: 21-0246 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: PC2+4*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230ABP-70+  
    		Active PCAP;34 pin;596.9 mm²
    Outline Drawing: 21-0246 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: PC2+4*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230ABP-70IND+  
    		Active PCAP;34 pin;596.9 mm²
    Outline Drawing: 21-0246 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: PC2+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230ABP-100   5% Tolerance, 100ns  
    		Active PCAP;34 pin;596.9 mm²
    Outline Drawing: 21-0246 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: PC2-4*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230ABP-70   5% Tolerance, 70ns  
    		Active PCAP;34 pin;596.9 mm²
    Outline Drawing: 21-0246 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: PC2-4*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230ABP-70IND   5% Tolerance, 70ns  
    		Active PCAP;34 pin;596.9 mm²
    Outline Drawing: 21-0246 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: PC2-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230Y Notes Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    DS1230YL-100    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    DS1230Y-FIR    
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230Y-100   10% Tolerance, 100ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230Y-120   10% Tolerance, 120ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230Y-150   10% Tolerance, 150ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230Y-200   10% Tolerance, 200ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230Y-70   10% Tolerance, 70ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230Y-85   10% Tolerance, 85ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230Y-150+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230Y-100+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230Y-70+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230Y-200+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230Y-85+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230Y-120+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230Y-120IND   10% Tolerance, 120ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230Y-200IND   10% Tolerance, 200ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230Y-70IND   10% Tolerance, 70ns  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230Y-200IND+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230Y-70IND+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230Y-120IND+  
    		Active EDIP;28 pin;629.9 mm²
    Outline Drawing: 21-0245 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: MDT28+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230YP-100   10% Tolerance, 100ns  
    		Active PCAP;34 pin;596.9 mm²
    Outline Drawing: 21-0246 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: PC2-4*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230YP-70   10% Tolerance, 70ns  
    		Active PCAP;34 pin;596.9 mm²
    Outline Drawing: 21-0246 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: PC2-4*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230YP-100+  
    		Active PCAP;34 pin;596.9 mm²
    Outline Drawing: 21-0246 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: PC2+4*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230YP-70+  
    		Active PCAP;34 pin;596.9 mm²
    Outline Drawing: 21-0246 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: PC2+4*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1230YP-70IND   10% Tolerance, 70ns  
    		Active PCAP;34 pin;596.9 mm²
    Outline Drawing: 21-0246 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: PC2-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1230YP-70IND+  
    		Active PCAP;34 pin;596.9 mm²
    Outline Drawing: 21-0246 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: PC2+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
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    2007-12-20
    This page last modified: 2009-10-28


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