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Analog Devices Inc./Maxim Integrated DS1350YP-70IND+
- Part No.:
- DS1350YP-70IND+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Memory
- Package:
- 34-PowerCap™ Module
- Datasheet:
-
DS1350YP-70IND+.pdf
- Description:
- IC NVSRAM 4MBIT PAR 34PWRCAP
- Quantity:
- Payment:
- Shipping:
Inventory:1,242
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Product details
Overview
DS1350YP-70IND+ from Maxim Integrated is a 4,194,304-bit (524,288 × 8) nonvolatile static RAM with integrated lithium battery backup, ±10% VCC tolerance (4.5V–5.5V), 70ns access time, and industrial temperature support (–40°C to +85°C). It functions as a drop-in replacement for 512k × 8 SRAM/EEPROM/Flash in mission-critical data logging systems requiring autonomous power-fail write protection.
For engineers reviewing the DS1350YP-70IND+ datasheet, DS1350YP-70IND+ pinout, DS1350YP-70IND+ application, or DS1350YP-70IND+ equivalent, key selection criteria include guaranteed 10-year data retention without external power, open-drain RST/BW outputs with timing-controlled reset assertion, battery voltage monitoring at 24-hour intervals, and PowerCap Module (PCM) surface-mount compatibility with DS9034PC+.
Technical Context
The DS1350YP-70IND+ integrates self-contained lithium energy management, real-time VCC monitoring, and automatic write-protection activation below 4.25V. Its power-switching circuit engages the battery when VCC falls below ~2.7V and disconnects it during normal operation above 4.5V.
It features dual open-drain status outputs: RST asserts for 200ms at power-up and during VCC out-of-tolerance events, while BW activates if internal battery voltage drops below 2.6V during daily 1-second test pulses across a 1MΩ load - both require external pull-up resistors and sink up to 10mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (524,288 × 8) - supports full byte-wide data bus interfacing without address multiplexing |
| Access Time | 70ns - enables direct interface with legacy microcontrollers and FPGAs operating at ≤14MHz system clocks |
| VCC Operating Range | 4.5V to 5.5V (±10%) - accommodates wide-input power rails without external regulation in industrial environments |
| Data Retention | 10 years minimum without external power - assured by factory-disconnected lithium cell activated only on first VCC application |
| Standby Current | 50µA typical - minimizes battery drain during extended backup-only operation |
| Temperature Range | –40°C to +85°C (IND grade) - qualified for deployment in outdoor metering, railway control, and factory automation |
| Write Endurance | Unlimited - eliminates wear-leveling firmware overhead required by Flash/EEPROM alternatives |
Pinout & Package
DS1350YP-70IND+ uses a 34-pin PowerCap Module (PCM) package - a surface-mountable module requiring separate attachment of DS9034PC+ or DS9034PCI+ PowerCap for full nonvolatile functionality. The PCM design avoids exposing the lithium cell to reflow soldering temperatures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 524,288-word addressing; no address latching required |
| DQ0–DQ7 | Data I/O | Bi-directional 8-bit data bus compatible with standard SRAM timing protocols |
| CE | Chip Enable | Active-low chip select; initiates read/write cycles when asserted with OE or WE |
| WE | Write Enable | Active-low write strobe; controls data latching and disables outputs when high during reads |
| OE | Output Enable | Active-low output enable; places DQ lines in high-Z state when deasserted |
| RST | Reset Output | Open-drain signal asserting for 200ms at power-up and during VCC failure; requires external pull-up |
| BW | Battery Warning | Open-drain flag activated if battery voltage <2.6V during daily 1s test; remains active until replacement |
| VCC | Power Supply | +5V supply input with ±10% tolerance; powers logic and enables battery disconnect circuitry |
| GND | Ground | Reference return path for all digital and analog functions including battery monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Automatic Power-Fail Write Protection | Hardware-enforced disable of writes and high-Z outputs when VCC drops below 4.25V - prevents corruption without software intervention |
| Daily Battery Voltage Monitoring | Self-executing 24-hour cycle with 1-second 1MΩ load test - delivers predictive battery health reporting via BW pin |
| Factory-Fresh Lithium Cell | Lithium backup electrically isolated until first VCC application - preserves shelf life and ensures full 10-year retention potential |
| Standardized PCM Pinout | 34-pin layout shared across Maxim's NV SRAM family - enables hardware reuse and BOM consolidation |
| Industrial Temperature Qualification | Full DC/AC specifications guaranteed from –40°C to +85°C - validated per JEDEC JESD22-A108 |
Applications
| Smart Energy Metering | Industrial PLC Data Logging |
|---|---|
|
Use Scenario: Continuous recording of kWh consumption, tariff periods, and event timestamps during grid instability or blackouts. IC Role / Device Role / Timing Role: Nonvolatile SRAM storing critical billing data with zero-write-delay persistence during VCC interruption. Use Value: Eliminates need for external EEPROM write-cycle management and guarantees atomic data retention even during sub-100ms brownouts. |
Use Scenario: Capturing sensor inputs, alarm states, and operational sequences in programmable logic controllers deployed in manufacturing cells. IC Role / Device Role / Timing Role: Real-time memory buffer that maintains last-known machine state and diagnostic history across unplanned shutdowns. Use Value: Enables deterministic recovery to last valid operational snapshot without firmware-based checksum validation or redundant storage layers. |
| Railway Signaling Event Recorders | Medical Diagnostic Equipment Buffers |
|
Use Scenario: Recording train position, speed, brake commands, and signal aspect changes for post-incident forensic analysis. IC Role / Device Role / Timing Role: Tamper-resistant, long-retention memory capturing time-stamped safety-critical events independent of primary power integrity. Use Value: Meets EN 50126/50128 requirements for data integrity under extended power loss, with no reliance on supercapacitors or external backup circuits. |
Use Scenario: Storing calibration coefficients, patient session parameters, and real-time waveform buffers in portable ultrasound and ECG devices. IC Role / Device Role / Timing Role: High-reliability scratchpad memory retaining configuration and transient clinical data during battery swaps or AC power transitions. Use Value: Ensures continuity of care by preserving device-specific settings and unsaved diagnostics without user-initiated save actions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nonvolatile SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS1350ABP-70IND+ | Narrower VCC tolerance (±5%, 4.75V–5.25V); higher write-protection threshold (4.50V vs. 4.25V) | Better suited for regulated 5V systems where tighter supply stability is guaranteed | Select DS1350ABP-70IND+ when system VCC ripple is <±2.5% and robustness against marginal brownouts is secondary to precision voltage tracking |
| STK15C88-70I | Same density and 70ns speed but lacks integrated battery monitor (BW) and daily self-test capability | Requires external battery voltage supervision circuitry for predictive maintenance | Choose STK15C88-70I only when cost sensitivity outweighs field-serviceability and battery health visibility requirements |
Compared with DS1350ABP-70IND+, the DS1350YP-70IND+ trades tighter VCC regulation for broader supply flexibility and earlier write-protection activation, while versus STK15C88-70I it adds autonomous battery diagnostics - making it optimal for unattended industrial deployments where maintenance access is infrequent.
Availability
DS1350YP-70IND+ is available at Aetrix Electronics and suitable for smart energy metering, industrial PLC data logging, and railway signaling event recorders requiring stable component supply across extended product lifecycles and harsh environmental conditions.
Supply support for DS1350YP-70IND+ 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 infrastructure.
The DS1350YP-70IND+ belongs to Maxim's PowerCap NV SRAM product line, engineered specifically for systems needing guaranteed data retention during unpredictable power loss without firmware dependency or external supervision circuitry.
FAQ
What is the guaranteed data retention period for DS1350YP-70IND+ without external power?
The DS1350YP-70IND+ guarantees a minimum of 10 years of data retention in the absence of external power. This specification is assured through component selection, process control, and design - not measured per unit during production. The lithium cell remains electrically disconnected until first VCC application, preserving its full capacity and enabling the full 10-year retention window to begin only after initial use.
Does DS1350YP-70IND+ require an external PowerCap, and which one?
Yes, DS1350YP-70IND+ requires a separate DS9034PC+ or DS9034PCI+ PowerCap to complete the nonvolatile SRAM module. The DS1350YP-70IND+ itself is the 34-pin PowerCap Module (PCM) substrate; the PowerCap snaps onto it post-reflow to provide the lithium backup source. Both components must be ordered separately and are shipped in distinct packaging.
How does the battery warning (BW) output function in DS1350YP-70IND+?
The BW output in DS1350YP-70IND+ is an open-drain signal that activates when the internal lithium battery voltage falls below 2.6V during its daily 1-second test pulse across a 1MΩ load. Once asserted, BW remains active until the PowerCap is replaced. It resumes automatic testing after each VCC power-up, and de-asserts only if subsequent tests confirm battery voltage >2.6V - providing field-serviceable battery health feedback without host processor involvement.
What is the role of the RST output in DS1350YP-70IND+ and how is it used?
The RST output in DS1350YP-70IND+ is an open-drain reset signal that holds the host processor in reset for 200ms nominal after VCC rises above the trip point, preventing operation during power-on transients. It also asserts during VCC out-of-tolerance conditions to warn of impending power failure. RST requires an external pull-up resistor and can sink up to 10mA - it is designed to interface directly with standard microcontroller reset inputs without additional buffering.
Can DS1350YP-70IND+ operate as a direct replacement for standard 512k × 8 SRAMs?
Yes, DS1350YP-70IND+ is explicitly designed as an upgrade for 512k × 8 SRAM, EEPROM, or Flash components. Its pinout, timing (70ns access), and parallel interface match industry-standard SRAM protocols. No PCB redesign is needed - only integration of the DS9034PC+ PowerCap and connection of external pull-ups to RST and BW. Write endurance is unlimited, eliminating lifetime limitations inherent in Flash/EEPROM alternatives.
DS1350YP-70IND+ 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:
- 70ns
- Access Time:
- 70 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 34-PowerCap Module
DS1350YP-70IND+ FAQ
1.How can I place an order for DS1350YP-70IND+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1350YP-70IND+ 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 DS1350YP-70IND+ reliable?
The price and inventory of DS1350YP-70IND+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1350YP-70IND+ is usually 5 days.
3.What payment methods are accepted for DS1350YP-70IND+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1350YP-70IND+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1350YP-70IND+?
DS1350YP-70IND+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1350YP-70IND+ 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 DS1350YP-70IND+?
For technical support, including DS1350YP-70IND+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1350YP-70IND+ requirements.
6.How does Aetrix verify that DS1350YP-70IND+ is sourced from the original manufacturer or authorized distributors?
All DS1350YP-70IND+ 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 DS1350YP-70IND+ meets industry standards.
7.What is the process for return or replacement of DS1350YP-70IND+?
All DS1350YP-70IND+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1350YP-70IND+, 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 DS1350YP-70IND+ part is unused and in its original packaging.
Return procedure for DS1350YP-70IND+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS1350YP-70IND+ Tags
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AT24C02C-XHM-T
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