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Analog Devices Inc./Maxim Integrated DS1230WP-100+
- Part No.:
- DS1230WP-100+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Memory
- Package:
- 34-PowerCap™ Module
- Datasheet:
-
DS1230WP-100+.pdf
- Description:
- IC NVSRAM 256KBIT PAR 34PWRCAP
- Quantity:
- Payment:
- Shipping:
Inventory:3,753
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Product details
Overview
DS1230WP-100+ from Maxim Integrated is a 3.3V, 256k-bit (32k × 8) nonvolatile static RAM with integrated lithium backup, JEDEC-standard 34-pin PowerCap Module (PCM) package, 100ns read/write access time, and guaranteed 10-year data retention without external power - used in industrial control systems for real-time parameter storage during unexpected power loss.
For engineers reviewing the DS1230WP-100+ datasheet, DS1230WP-100+ pinout, DS1230WP-100+ application, or DS1230WP-100+ equivalent, key selection criteria include nonvolatile SRAM replacement capability, battery-backed write protection behavior, PCM surface-mount compatibility, and industrial-grade timing stability under VCC brownout conditions.
Technical Context
The DS1230WP-100+ integrates SRAM, lithium battery switching circuitry, and voltage-monitoring logic into a single module base. It autonomously enables backup power when VCC drops below ~2.5V and disables the lithium source until first power-up to preserve battery freshness.
It operates as a drop-in replacement for volatile 32k×8 SRAMs and matches 28256 EEPROM pinouts in DIP form; the PCM variant uses standardized contacts for snap-on DS9034PC+ PowerCap, enabling reflow-safe assembly while isolating the lithium cell from solder thermal stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 262,144 bits (32,768 words × 8 bits) - supports byte-wide microprocessor bus interfacing without address decoding overhead. |
| Access Time | 100 ns - ensures compatibility with 10 MHz bus timing and eliminates wait states in legacy 8/16-bit controllers. |
| Data Retention | 10 years minimum without VCC - enables long-term configuration storage in unattended equipment like remote telemetry nodes. |
| Write Protection Threshold | VTP = 2.8–3.0 V - triggers automatic write disable before VCC decay causes metastability in memory cells. |
| Supply Voltage Range | VCC = 3.0–3.6 V - aligns with modern 3.3V logic families and avoids level-shifting requirements. |
| Standby Current | ICCS2 = 30–150 µA at CE = VCC−0.2V - minimizes energy drain during extended low-power sleep modes. |
| Operating Temperature | 0°C to +70°C - certified for commercial-grade embedded applications including point-of-sale terminals and instrumentation front-ends. |
Pinout & Package
DS1230WP-100+ uses a 34-pin PowerCap Module (PCM) package with standardized contact layout for mating with DS9034PC+ or DS9034PCI+ PowerCap. The module base is surface-mountable; battery integration occurs post-reflow via mechanical snap-on.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A14 | Address Inputs | 15-bit address bus supporting full 32k-word addressing; compatible with Z80, 8051, and 68K family address mapping. |
| DQ0–DQ7 | Data I/O | Bi-directional 8-bit data bus with TTL-compatible levels; high-impedance outputs during write cycles prevent bus contention. |
| CE | Chip Enable | Active-low chip select; initiates read/write when low and coordinates with WE/OE to define cycle type. |
| WE | Write Enable | Active-low write strobe; controls data latching and output driver disable timing per tODW = 35 ns specification. |
| OE | Output Enable | Active-low output enable; allows output gating independent of CE for multi-chip memory banking. |
| VCC | Power Supply | +3.3V main supply; powers SRAM core and control logic; monitored continuously for brownout detection. |
| GND | Ground | Signal and power return reference; separate ground pins ensure stable reference during high-speed transitions. |
| VBAT | Lithium Backup Input | Connects to DS9034PC+ internal lithium cell; electrically isolated until first VCC application to preserve shelf life. |
| NC | No Connect | Unbonded pins (pins 1, 3, 4, 34); no internal connection - must remain unconnected on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic Power-Fail Write Protection | Triggers at VCC ≤ 2.8 V and forces all inputs to "don't care" state while placing outputs in high-Z - prevents partial writes during brownout. |
| Lithium Freshness Seal | Lithium source remains electrically disconnected until first VCC > 3.0 V application - guarantees full 10-year retention capacity from installation date. |
| Unlimited Write Cycles | No endurance limit on SRAM writes - eliminates wear-leveling firmware overhead required by EEPROM/Flash alternatives. |
| Reflow-Safe Assembly | PCM base withstands 260°C reflow; lithium battery added post-soldering - avoids thermal degradation of backup cell. |
| Standardized PCM Pinout | Identical contact layout across Maxim's nonvolatile SRAM module family - simplifies BOM consolidation and design reuse. |
Applications
| Industrial PLC Data Logging | Medical Device Calibration Storage |
|---|---|
|
Use Scenario: Storing sensor calibration coefficients and operational history in programmable logic controllers deployed in factory automation environments with intermittent power. IC Role / Device Role / Timing Role: Nonvolatile SRAM providing immediate-read/write access to critical runtime parameters while retaining data through grid outages. Use Value: Eliminates boot-time EEPROM reload delays and avoids Flash write latency during live process control - maintains deterministic response within 100 ns. |
Use Scenario: Preserving patient-specific therapy settings and device self-test results in portable infusion pumps requiring FDA-compliant data integrity. IC Role / Device Role / Timing Role: Battery-backed memory ensuring tamper-proof retention of audit-trail records and safety-critical configuration data. Use Value: Meets IEC 62304 data persistence requirements with zero write-cycle wear-out risk - supports unlimited field updates without lifetime degradation. |
| Point-of-Sale Terminal Configuration | Telecom Line Card Parameter Cache |
|
Use Scenario: Holding tax tables, pricing rules, and user preferences in retail terminals subject to daily power cycling and unscheduled shutdowns. IC Role / Device Role / Timing Role: Drop-in SRAM replacement preserving existing board layout while adding nonvolatility without software changes. Use Value: Enables instant resume after power loss - avoids reinitialization delays and transaction rollback errors during checkout. |
Use Scenario: Caching DSP filter coefficients and port provisioning data in carrier-grade line cards where firmware updates occur in-service. IC Role / Device Role / Timing Role: High-speed memory buffer retaining active configuration during hot-swap or firmware patching events. Use Value: Maintains call continuity during background updates - leverages 100 ns access to avoid packet jitter in real-time voice processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nonvolatile SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS1230W-100+ | 28-pin EDIP package; wave/hand-solder only; no surface-mount capability; same 100 ns speed and 32k×8 organization. | Requires through-hole assembly; unsuitable for automated SMT lines; limited to legacy board designs with DIP footprints. | Select DS1230W-100+ only when redesign is impractical and DIP footprint is fixed. |
| STK12C68-AW50 | 50 ns access time; 8-kbit × 8 organization (64k total); different pinout; requires external battery management circuitry. | Higher speed but smaller capacity; lacks integrated lithium switch and freshness seal - demands external supervision logic. | Choose STK12C68-AW50 only when sub-50 ns timing is mandatory and board space allows discrete backup design. |
Compared with DS1230W-100+, the DS1230WP-100+ enables SMT production and eliminates reflow risk to the lithium cell, while STK12C68-AW50 trades integration for raw speed and requires additional support components - making DS1230WP-100+ optimal for new designs prioritizing reliability, manufacturability, and maintenance-free operation.
Availability
DS1230WP-100+ is available at Aetrix Electronics and suitable for industrial control systems, medical instrumentation, point-of-sale terminals, and telecom infrastructure requiring stable component supply with guaranteed 10-year data retention and RoHS-compliant packaging.
Supply support for DS1230WP-100+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The DS1230WP-100+ belongs to Maxim's nonvolatile SRAM product line, engineered to replace volatile memory in mission-critical systems where data integrity during power interruption is non-negotiable.
FAQ
What is the function of the VBAT pin on the DS1230WP-100+?
The VBAT pin on the DS1230WP-100+ connects to the lithium cell inside the DS9034PC+ PowerCap. It remains electrically isolated until the first application of VCC > 3.0 V, preserving full battery capacity. During VCC failure, the DS1230WP-100+ automatically switches to VBAT to maintain SRAM data - this seamless transition is managed entirely by on-chip control logic without external intervention.
Can the DS1230WP-100+ be used as a direct replacement for standard 32k×8 SRAMs?
Yes, the DS1230WP-100+ is designed as a functional and timing-compatible replacement for 32k×8 volatile SRAMs. Its 100 ns access time, byte-wide DQ0–DQ7 interface, and standard CE/WE/OE control signals match legacy SRAM timing. However, unlike volatile SRAM, the DS1230WP-100+ retains data during power loss - no firmware or hardware changes are needed beyond installing the DS9034PC+ PowerCap.
Does the DS1230WP-100+ require external circuitry for battery management?
No, the DS1230WP-100+ contains fully integrated lithium battery switching and voltage monitoring circuitry. It autonomously disconnects the lithium source until first power-up, detects VCC decay below 2.8 V to initiate write protection, and seamlessly transfers power between VCC and VBAT - all without external components, timers, or supervisor ICs.
What is the difference between DS1230WP-100+ and DS1230W-100+?
The DS1230WP-100+ uses a 34-pin PowerCap Module (PCM) package for surface-mount assembly and requires a separate DS9034PC+ PowerCap, whereas the DS1230W-100+ is a 28-pin EDIP with integrated lithium cell and is restricted to wave or hand soldering. Both share identical memory architecture, timing, and data retention - but only the DS1230WP-100+ supports automated SMT manufacturing.
Is the DS1230WP-100+ compliant with RoHS and lead-free requirements?
Yes, the DS1230WP-100+ carries the "+" suffix indicating full RoHS compliance and lead-free construction. Its package meets JEDEC standards for Pb-free reflow profiles, and the DS9034PC+ PowerCap is also RoHS-compliant - ensuring full environmental compliance for both module base and battery assembly.
DS1230WP-100+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 34-PowerCap™ Module
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- NVSRAM
- Technology:
- NVSRAM (Non-Volatile SRAM)
- Memory Size:
- 256Kbit
- Memory Organization:
- 32K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 100ns
- Access Time:
- 100 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 34-PowerCap Module
DS1230WP-100+ FAQ
1.How can I place an order for DS1230WP-100+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1230WP-100+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DS1230WP-100+ reliable?
The price and inventory of DS1230WP-100+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1230WP-100+ is usually 5 days.
3.What payment methods are accepted for DS1230WP-100+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1230WP-100+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1230WP-100+?
DS1230WP-100+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1230WP-100+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DS1230WP-100+?
For technical support, including DS1230WP-100+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1230WP-100+ requirements.
6.How does Aetrix verify that DS1230WP-100+ is sourced from the original manufacturer or authorized distributors?
All DS1230WP-100+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DS1230WP-100+ meets industry standards.
7.What is the process for return or replacement of DS1230WP-100+?
All DS1230WP-100+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1230WP-100+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DS1230WP-100+ part is unused and in its original packaging.
Return procedure for DS1230WP-100+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS1230WP-100+ Tags
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