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Renesas R1LP0408DSP-7SR#S0
- Part No.:
- R1LP0408DSP-7SR#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-SOIC (0.450", 11.40mm Width)
- Datasheet:
-
R1LP0408DSP-7SR#S0.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 32SOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,604
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Product details
Overview
R1LP0408DSP-7SR#S0 from Renesas Electronics is a 4Mb advanced low-power static RAM (512-kword × 8-bit), designed for battery-backed memory applications requiring reliable data retention at reduced VCC. It operates from a single 5V supply (4.5–5.5V), delivers 70ns max access time, and draws only 0.8μA typical standby current at +25°C in SOP-32 package.
For engineers reviewing the R1LP0408DSP-7SR#S0 datasheet, R1LP0408DSP-7SR#S0 pinout, R1LP0408DSP-7SR#S0 application, or R1LP0408DSP-7SR#S0 equivalent, this page provides verified specifications, functional context for low-power embedded systems, and validated alternatives for memory subsystem design.
Technical Context
The R1LP0408DSP-7SR#S0 implements a 2,048 × 2,048 memory matrix with full TTL-compatible I/O, three-state output control via OE#, and common bidirectional data bus (I/O0–I/O7). Its timing architecture supports equal read/write cycle times and guarantees data retention down to 2.0V VCC with CS# asserted.
It uses CMOS/TFT process technology to achieve ultra-low standby power (0.8μA typ @ +25°C) while maintaining 70ns access performance under industrial temperature range (0°C to +70°C). All inputs meet VIH ≥ 2.2V and VIL ≤ 0.8V thresholds for robust noise margin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 4Mb (512-kword × 8-bit): provides 524,288 bytes of fast, non-volatile-retentive SRAM storage |
| Access time | 70ns (max): defines worst-case delay from address valid to stable data output during read cycles |
| Supply voltage | 4.5V to 5.5V: ensures compatibility with standard 5V logic systems and tolerance to rail variation |
| Standby current | 0.8μA (typ @ +25°C): enables multi-year battery backup operation without significant drain |
| Data retention VCC | 2.0V min: allows memory contents to persist during brown-out or backup battery operation |
| Operating temperature | 0°C to +70°C: qualified for commercial/industrial ambient environments without derating |
| I/O interface | Common bidirectional bus (I/O0–I/O7) with three-state control: reduces PCB trace count and simplifies bus arbitration |
Pinout & Package
Package: 525-mil 32-pin plastic SOP (PRSP0032DF-A / 032P2S-A), lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Vcc | Power supply | Primary 5V supply input; must be decoupled locally to suppress switching noise |
| Vss | Ground | System reference ground; requires low-impedance connection to minimize ground bounce |
| A0–A18 | Address input | 19-bit address bus supporting full 524,288-word addressing; A18 is MSB |
| I/O0–I/O7 | Data input/output | Bidirectional 8-bit data bus; high-impedance when CS# or OE# is high |
| CS# | Chip select | Active-low enable controlling internal buffers; asserts retention mode when high |
| WE# | Write enable | Active-low write strobe; initiates write on falling edge when CS# is active |
| OE# | Output enable | Active-low output gate; places I/O pins in high-Z when deasserted during reads |
Key Features
| Feature | Design Value |
|---|---|
| Single 5V supply operation | Eliminates need for dual-rail supplies or level shifters in legacy 5V systems |
| 70ns access with equal cycle timing | Simplifies timing budgeting in synchronous bus designs without read/write asymmetry penalties |
| 0.8μA typical standby current | Extends battery life in uninterruptible memory applications beyond 10 years at room temperature |
| 2.0V data retention threshold | Enables seamless transition to backup power without external voltage monitoring or switching circuitry |
| TTL-compatible I/O levels | Direct interfacing with 74LS/74HC logic and microcontrollers without translation components |
Applications
| Industrial PLC Data Buffer | Medical Device Parameter Storage |
|---|---|
Use Scenario: Storing real-time sensor calibration tables and operational logs in programmable logic controllers with battery-backed power rails. IC Role / Device Role / Timing Role: Non-volatile-retentive SRAM buffer holding critical configuration data during AC loss or firmware update cycles. Use Value: Guarantees zero-data-loss retention at 2.0V VCC and draws <1μA standby current-enabling >5-year coin-cell operation. | Use Scenario: Preserving patient-specific therapy settings and device history in portable infusion pumps and diagnostic monitors. IC Role / Device Role / Timing Role: Low-power static RAM serving as secure, fast-access parameter store accessible by ARM Cortex-M microcontrollers. Use Value: 70ns access time meets real-time response requirements while 0.8μA standby minimizes battery drain between clinical sessions. |
| Point-of-Sale Terminal Memory | Automotive Infotainment Cache |
Use Scenario: Caching transaction records and tax tables in retail terminals powered by supercapacitors during brief outages. IC Role / Device Role / Timing Role: High-reliability SRAM acting as volatile-but-retentive cache layer between flash storage and CPU. Use Value: 525-mil SOP package fits compact PCB layouts; 70ns timing aligns with 16-bit parallel bus interfaces in legacy POS hardware. | Use Scenario: Holding UI state variables and audio buffer metadata in head-unit systems where ECU power cycling occurs frequently. IC Role / Device Role / Timing Role: Battery-backed SRAM preserving user preferences and navigation context across ignition cycles. Use Value: Direct TTL compatibility eliminates level-shifter components; 0–70°C rating covers cabin temperature extremes without thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV25616AL-10TLI | 256K × 16-bit organization, 10ns access, 3.3V supply only | Higher density per pin but incompatible voltage domain and bus width | Select only if migrating to 3.3V system with wider data path and tighter timing budgets |
| AS6C4008-70SCN | 512K × 8-bit, 70ns access, 5V supply, 32-pin SOP, 2μA standby (typ) | Nearly identical pinout and function but higher standby current and no 2.0V retention spec | Drop-in replacement where extended battery life is not required and retention down to 2.0V is unnecessary |
Compared with IS61LV25616AL-10TLI and AS6C4008-70SCN, the R1LP0408DSP-7SR#S0 uniquely combines 5V operation, 70ns timing, sub-1μA standby, and guaranteed 2.0V data retention-making it optimal for long-life battery-backed systems where voltage margin and power efficiency are critical.
Availability
R1LP0408DSP-7SR#S0 is available at Aetrix Electronics and suitable for industrial PLC data buffering, medical device parameter storage, and point-of-sale terminal memory requiring stable component supply and long-term lifecycle support.
Supply support for R1LP0408DSP-7SR#S0 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
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and enterprise applications.
The R1LP0408D Series was developed specifically for low-power, battery-backed memory applications demanding high reliability, extended data retention, and compatibility with legacy 5V logic systems.
FAQ
What is the maximum access time specification for R1LP0408DSP-7SR#S0?
The R1LP0408DSP-7SR#S0 has a maximum access time of 70ns, measured as tAA (address access time) and tACS (chip select access time) under standard test conditions (VCC = 4.5–5.5V, TA = 0°C to +70°C). This value is guaranteed across the full commercial temperature range and applies to both read and write cycle timing budgets in system design.
Does R1LP0408DSP-7SR#S0 support true data retention during power loss?
Yes, the R1LP0408DSP-7SR#S0 supports guaranteed data retention down to 2.0V VCC when CS# is held high, with ICCDR ≤ 10μA at +85°C. This enables reliable operation during brown-out events or battery switchover without external supervision circuitry-verified per the Low VCC Data Retention Characteristics table in the official datasheet.
Is R1LP0408DSP-7SR#S0 pin-compatible with other members of the R1LP0408D Series?
Yes, all R1LP0408D Series variants-including R1LP0408DSP-5SR#S0, R1LP0408DSP-7SI#S0, and R1LP0408DSB-7SR#S0-share identical pinouts within the same package type. The R1LP0408DSP-7SR#S0 uses the 32-pin SOP footprint (PRSP0032DF-A), and its pin functions match exactly across speed grades and temperature versions in that package.
What is the standby current consumption of R1LP0408DSP-7SR#S0 at room temperature?
The R1LP0408DSP-7SR#S0 draws 0.8μA typical standby current at +25°C when CS# is high and all other inputs are within VSS to VCC range. This value is confirmed in the DC Characteristics table (page 5) and reflects center-distribution typical performance-not a guaranteed minimum or maximum-but is widely used for battery-life estimation in backup applications.
Can R1LP0408DSP-7SR#S0 operate with 3.3V logic interfaces?
No, the R1LP0408DSP-7SR#S0 is specified exclusively for 5V operation (4.5–5.5V). Its input thresholds (VIH ≥ 2.2V, VIL ≤ 0.8V) and output drive (VOH ≥ 2.4V at -1mA) are TTL-compatible but not 3.3V-safe. Connecting directly to 3.3V microcontrollers risks violating absolute maximum ratings and may cause latch-up or data corruption without level translation.
R1LP0408DSP-7SR#S0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-SOIC (0.450", 11.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOP
R1LP0408DSP-7SR#S0 FAQ
1.How can I place an order for R1LP0408DSP-7SR#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0408DSP-7SR#S0 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 R1LP0408DSP-7SR#S0 reliable?
The price and inventory of R1LP0408DSP-7SR#S0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LP0408DSP-7SR#S0 is usually 5 days.
3.What payment methods are accepted for R1LP0408DSP-7SR#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0408DSP-7SR#S0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0408DSP-7SR#S0?
R1LP0408DSP-7SR#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0408DSP-7SR#S0 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 R1LP0408DSP-7SR#S0?
For technical support, including R1LP0408DSP-7SR#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0408DSP-7SR#S0 requirements.
6.How does Aetrix verify that R1LP0408DSP-7SR#S0 is sourced from the original manufacturer or authorized distributors?
All R1LP0408DSP-7SR#S0 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 R1LP0408DSP-7SR#S0 meets industry standards.
7.What is the process for return or replacement of R1LP0408DSP-7SR#S0?
All R1LP0408DSP-7SR#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0408DSP-7SR#S0, 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 R1LP0408DSP-7SR#S0 part is unused and in its original packaging.
Return procedure for R1LP0408DSP-7SR#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LP0408DSP-7SR#S0 Tags
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