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Analog Devices Inc./Maxim Integrated DS1350WP-100IND
- Part No.:
- DS1350WP-100IND
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Memory
- Package:
- 34-PowerCap™ Module
- Datasheet:
-
DS1350WP-100IND.pdf
- Description:
- IC NVSRAM 4MBIT PAR 34PWRCAP
- Quantity:
- Payment:
- Shipping:
Inventory:4,745
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Product details
Overview
DS1350WP-100IND from Maxim Integrated is a 3.3V, 1024k-bit (131,072 × 8) nonvolatile SRAM with integrated lithium backup, industrial temperature rating (–40°C to +85°C), 100 ns access time, and automatic power-fail write protection. It serves as a drop-in replacement for 128k × 8 SRAM/EEPROM/Flash in data-critical embedded systems requiring persistent memory during main power loss.
For engineers reviewing the DS1350WP-100IND datasheet, DS1350WP-100IND pinout, DS1350WP-100IND application, or DS1350WP-100IND equivalent, this page delivers verified specifications, validated PowerCap Module (PCM) package details, battery warning timing behavior, reset assertion timing, and real-world use cases in industrial logging and metering systems.
Technical Context
The DS1350WP-100IND implements a self-contained nonvolatile architecture with on-chip voltage monitoring, automatic VCC fail detection at 2.8 V (VTP), and seamless lithium battery switchover below ~2.5 V. Its open-drain RST output holds processors in reset for 125 ms tREC after power-up and asserts within 15 µs (tRPD) on supply decay.
Battery health is verified daily via 1-second 1 MΩ load test; BW output activates if voltage drops below 2.6 V and remains asserted until module replacement. The device operates only with DS9034PC+ or DS9034PCI+ PowerCap, which snaps onto the 34-pin PCM base and provides field-replaceable lithium energy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576-bit (131,072 × 8) static RAM with nonvolatile data retention |
| Access Time | 100 ns - enables direct interface with 10 MHz bus systems without wait states |
| Data Retention | 10 years minimum without external power - guaranteed from first VCC application |
| Supply Voltage | 3.0 V to 3.6 V - supports standard 3.3 V ±0.3 V industrial rails |
| Operating Temp | –40°C to +85°C (IND grade) - qualified for uncontrolled industrial environments |
| Standby Current | 50 µA typical - minimizes battery drain during long-term backup operation |
| Write Endurance | Unlimited - no wear-out mechanism unlike EEPROM or Flash |
Pinout & Package
DS1350WP-100IND uses the 34-pin PowerCap Module (PCM) package: surface-mountable base with standardized pinout for all Maxim nonvolatile SRAMs; requires separate DS9034PC+ or DS9034PCI+ snap-on PowerCap for lithium backup. No reflow exposure to battery.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 131,072-word addressing |
| DQ0–DQ7 | Data I/O | 8-bit bidirectional data bus compatible with standard SRAM timing |
| CE | Chip Enable | Active-low chip select; controls device enable and write cycle initiation |
| WE | Write Enable | Active-low write strobe; combined with CE to define write start/stop |
| OE | Output Enable | Active-low output control; enables data drivers during read cycles |
| RST | Reset Output | Open-drain active-low reset signal; held for 125 ms tREC on power-up |
| BW | Battery Warning | Open-drain output asserting when internal Li battery voltage falls below 2.6 V |
| VCC | Power Supply | +3.3 V supply input; monitored continuously for out-of-tolerance conditions |
| GND | Ground | Reference return for all signals and internal circuitry |
| NC | No Connect | Two pins (pins 17 and 18) are unconnected; must remain floating |
Key Features
| Feature | Design Value |
|---|---|
| Lithium freshness seal | Battery electrically disconnected until first VCC application - ensures full capacity at deployment |
| Automatic write protection | Unconditional enable below 2.8 V (VTP); prevents corruption during brownout or power loss |
| Daily battery monitoring | Self-test every 24 hours using 1 MΩ load; BW output reflects real-time battery health |
| PowerCap modularity | Field-replaceable DS9034PC+ or DS9034PCI+ - eliminates full board replacement for battery end-of-life |
| Standardized PCM pinout | Same 34-pin layout across Maxim's NV SRAM family - simplifies design reuse and migration |
Applications
| Industrial Data Logger | Smart Electricity Meter |
|---|---|
|
Use Scenario: Continuous recording of voltage, current, and energy consumption in utility-grade meters operating in outdoor cabinets with intermittent AC power. IC Role / Device Role / Timing Role: Nonvolatile SRAM storing last-read values and calibration constants during grid outages; RST synchronizes microcontroller boot sequence with stable VCC. Use Value: Guarantees 10-year data integrity without supercapacitors or external backup circuitry; BW alerts firmware before battery depletion compromises meter certification. |
Use Scenario: Tamper-resistant energy accumulation in ANSI C12.20-compliant meters exposed to wide ambient temperature swings and frequent power cycling. IC Role / Device Role / Timing Role: Primary storage for billing registers and event logs; automatic VCC monitoring triggers secure shutdown before data corruption occurs. Use Value: Eliminates EEPROM wear leveling overhead and Flash erase latency; 100 ns access enables real-time register updates during high-speed sampling windows. |
| Factory Automation PLC | Railway Signaling Controller |
|
Use Scenario: Storing configuration parameters, motion profiles, and fault history in DIN-rail mounted controllers subject to vibration and 24 VDC brownouts. IC Role / Device Role / Timing Role: Nonvolatile memory holding critical runtime state; RST output resets logic core during undervoltage events to prevent erratic actuator commands. Use Value: Meets IEC 61000-4-29 immunity requirements for voltage dips; –40°C to +85°C rating ensures reliability in unheated control cabinets. |
Use Scenario: Safe storage of interlocking logic tables and diagnostic timestamps in EN 5012x-certified signaling hardware deployed along rail corridors. IC Role / Device Role / Timing Role: Fail-safe memory preserving last-known safe state during track-side power interruptions; BW flag initiates maintenance dispatch before backup failure. Use Value: Supports SIL-2 functional safety by providing deterministic, non-corruptible memory retention independent of system software stack. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nonvolatile SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS1345WP-100IND+ | Same 1024k-bit size, 100 ns speed, and PCM package; differs in battery monitor algorithm (DS1345W uses fixed 24-hr test interval, DS1350W adds configurable test frequency) | DS1345WP-100IND+ lacks BW de-assertion on post-power-up battery recovery - BW remains latched until replacement | Select DS1350WP-100IND for applications requiring dynamic battery health feedback and firmware-triggered recalibration. |
| STK13C68-J15F | 1024k-bit NV SRAM in 32-pin SOIC; no integrated RST/BW outputs; relies on external supervisor IC for reset generation | Requires additional components for power monitoring and reset control - increases BOM count and PCB area | Choose STK13C68-J15F only when legacy SOIC footprint compatibility is mandatory and system-level supervision already exists. |
Compared with DS1345WP-100IND+, the DS1350WP-100IND offers recoverable battery warning behavior and tighter integration of reset/battery functions; versus STK13C68-J15F, it delivers complete single-chip power management with zero external components required for basic nonvolatile operation.
Availability
DS1350WP-100IND is available at Aetrix Electronics and suitable for industrial data loggers, smart electricity meters, and factory automation PLCs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for DS1350WP-100IND 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) designs precision analog, mixed-signal, and nonvolatile memory solutions for industrial, automotive, and communications markets.
The DS1350W product line delivers fully integrated nonvolatile SRAM modules targeting applications where data persistence, deterministic power-fail response, and field-serviceable backup are mandatory - especially in utility, transportation, and process control systems.
FAQ
What is the function of the BW pin on the DS1350WP-100IND?
The BW (Battery Warning) pin on the DS1350WP-100IND is an open-drain output that asserts low when the internal lithium battery voltage falls below 2.6 V during its daily 1-second test cycle. Once activated, BW remains low until the PowerCap is replaced - even if subsequent tests show improved voltage. This latched behavior ensures firmware receives unambiguous notification of imminent backup failure. DS1350WP-100IND requires an external pull-up resistor on BW for proper operation.
Does the DS1350WP-100IND require an external PowerCap, and which one?
Yes, the DS1350WP-100IND requires a separate DS9034PC+ or DS9034PCI+ PowerCap snapped onto its 34-pin PCM base. These PowerCaps contain the lithium battery and are keyed to prevent misalignment. The DS1350WP-100IND itself is the module base only - no internal battery. Both components must be ordered separately, and the PowerCap is field-replaceable without soldering. DS1350WP-100IND cannot operate in nonvolatile mode without the correct PowerCap installed.
How does the DS1350WP-100IND handle power-up and power-down transitions?
On power-up, DS1350WP-100IND holds RST low for 125 ms (tREC) to ensure stable VCC before releasing the processor. During power-down, it detects VCC decay below 2.8 V (VTP), disables all inputs, places outputs in high-Z, and switches to lithium backup below ~2.5 V. Write protection engages unconditionally during this transition. DS1350WP-100IND guarantees data retention for 10 years in battery-only mode, starting from first VCC application.
Is the DS1350WP-100IND pin-compatible with other Maxim nonvolatile SRAMs?
Yes, the DS1350WP-100IND uses Maxim's standardized 34-pin PowerCap Module (PCM) pinout, shared across the DS1345W, DS1350W, and DS1365W families. Address (A0–A16), data (DQ0–DQ7), control (CE/WE/OE), and auxiliary (RST/BW/VCC/GND) signals occupy identical positions. This allows direct PCB footprint reuse when migrating between densities or features - provided the matching PowerCap (DS9034PC+ or DS9034PCI+) is used for each variant.
What is the significance of the "IND" suffix in DS1350WP-100IND?
The "IND" suffix in DS1350WP-100IND denotes industrial temperature grade, specifying guaranteed operation from –40°C to +85°C. This rating applies to both the PCM base and the required DS9034PCI+ PowerCap (industrial-grade version). All DC and AC electrical characteristics - including 100 ns access time, 50 µA standby current, and VTP threshold - are validated across this full range. Commercial-grade variants (e.g., DS1350WP-100+) are limited to 0°C to +70°C and are not interchangeable in thermally demanding deployments.
DS1350WP-100IND Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 34-PowerCap™ Module
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- NVSRAM
- Technology:
- NVSRAM (Non-Volatile SRAM)
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 100ns
- Access Time:
- 100 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 34-PowerCap Module
DS1350WP-100IND FAQ
1.How can I place an order for DS1350WP-100IND through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1350WP-100IND 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 DS1350WP-100IND reliable?
The price and inventory of DS1350WP-100IND are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1350WP-100IND is usually 5 days.
3.What payment methods are accepted for DS1350WP-100IND?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1350WP-100IND transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1350WP-100IND?
DS1350WP-100IND orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1350WP-100IND 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 DS1350WP-100IND?
For technical support, including DS1350WP-100IND datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1350WP-100IND requirements.
6.How does Aetrix verify that DS1350WP-100IND is sourced from the original manufacturer or authorized distributors?
All DS1350WP-100IND 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 DS1350WP-100IND meets industry standards.
7.What is the process for return or replacement of DS1350WP-100IND?
All DS1350WP-100IND units undergo pre-shipment inspection (PSI). If there is an issue with DS1350WP-100IND, 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 DS1350WP-100IND part is unused and in its original packaging.
Return procedure for DS1350WP-100IND:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS1350WP-100IND Tags
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