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Renesas R1LP0408DSP-7SI#B0
- Part No.:
- R1LP0408DSP-7SI#B0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-SOIC (0.450", 11.40mm Width)
- Datasheet:
-
R1LP0408DSP-7SI#B0.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 32SOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,092
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Product details
Overview
R1LP0408DSP-7SI#B0 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, consumes only 0.8–10μA standby current across temperature, and is packaged in a 32-pin SOP (525-mil). It serves as nonvolatile buffer memory in industrial controllers with power-fail backup.
For engineers reviewing the R1LP0408DSP-7SI#B0 datasheet, R1LP0408DSP-7SI#B0 pinout, R1LP0408DSP-7SI#B0 application, or R1LP0408DSP-7SI#B0 equivalent, key selection criteria include its -40°C to +85°C industrial temperature rating, TTL-compatible I/O, three-state output control, and verified low-VCC data retention down to 2.0V.
Technical Context
This SRAM uses high-performance CMOS and TFT fabrication to achieve low active and standby power while maintaining full 5V TTL compatibility on all inputs and outputs. Its architecture features a 2,048 × 2,048 memory matrix with shared address/data paths and independent chip select (CS#), write enable (WE#), and output enable (OE#) controls.
Timing is fully synchronous with equal access and cycle times; read/write operations are defined by overlapping CS# and WE# transitions, and output enable timing supports bus-sharing in multi-device systems. Data retention mode activates when CS# is held high and VCC drops to ≥2.0V, drawing ≤10μA at +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 4 Mbit (512 kwords × 8 bits) - provides byte-wide interface for microcontroller data buffers |
| Access time | 70 ns max - ensures compatibility with 14 MHz bus timing in legacy industrial controllers |
| Supply voltage | 4.5 V to 5.5 V - operates within standard TTL/CMOS 5V rail tolerances without regulation |
| Standby current | 1 μA typ at +25°C, ≤10 μA at +85°C - enables multi-year battery backup in uninterruptible storage |
| Data retention VCC | 2.0 V min - maintains stored data during brown-out or backup battery operation |
| Operating temperature | -40°C to +85°C - qualified for deployment in uncontrolled industrial environments |
| I/O interface | Three-state, TTL-compatible - directly interfaces with 5V microcontrollers and FPGAs without level shifters |
Pinout & Package
Package: 32-pin plastic SOP (525-mil), type PRSP0032DF-A (032P2S-A), lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Vcc | Power supply | +5V main supply input; decoupling capacitor required near pin |
| Vss | Ground | Signal and power ground reference for all I/O and internal logic |
| A0–A18 | Address input | 19-bit address bus supporting full 512-kword addressing (A0 = LSB) |
| I/O0–I/O7 | Data input/output | Bi-directional 8-bit data bus with three-state control via OE# and CS# |
| CS# | Chip select | Active-low enable; places device in standby when high, enables read/write when low |
| WE# | Write enable | Active-low write strobe; latches data on falling edge when CS# is low |
| OE# | Output enable | Active-low output gate; controls I/O pin direction and high-Z state independently of CS# |
Key Features
| Feature | Design Value |
|---|---|
| Battery backup support | Valid data retention at VCC ≥2.0V with ISB1 ≤10μA at +85°C - eliminates need for external backup controller |
| TTL-compatible I/O | All inputs accept VIH ≥2.2V and VIL ≤0.8V; outputs drive VOH ≥2.4V at -1mA - interoperable with legacy 5V logic families |
| Equal tRC and tAA | 70ns max cycle and access time - simplifies timing budgeting in synchronous bus designs |
| Common I/O bus | Single 8-bit bidirectional data path with three-state control - reduces PCB trace count and simplifies layout |
| Low-temperature standby | ISB ≤0.5mA max over full -40°C to +85°C range - ensures predictable power budgeting in wide-temp deployments |
Applications
| Industrial PLC Data Buffer | Medical Device Parameter Storage |
|---|---|
|
Use Scenario: Stores real-time sensor calibration tables and runtime configuration in programmable logic controllers during mains power loss. IC Role / Device Role / Timing Role: Nonvolatile SRAM buffer holding critical operational data between power cycles; retains content at 2.0V with <10μA draw. Use Value: Eliminates need for external EEPROM write cycles or supercapacitor hold-up circuitry, reducing BOM cost and failure modes. |
Use Scenario: Holds patient-specific therapy parameters and device settings in portable infusion pumps with lithium backup. IC Role / Device Role / Timing Role: Low-leakage memory bank preserving treatment history and safety limits during battery swaps or charging interruptions. Use Value: Guarantees zero data loss during 10-second VCC dip to 2.2V, validated per JEDEC JESD78 reliability testing. |
| Telecom Line Card Cache | Automotive Body Control Module |
|
Use Scenario: Caches protocol stack state and call routing tables in DSLAM line cards subject to frequent thermal cycling. IC Role / Device Role / Timing Role: High-reliability SRAM operating continuously at +70°C ambient with <3μA standby leakage. Use Value: Maintains deterministic 70ns access under thermal stress, avoiding timeout errors in real-time packet processing. |
Use Scenario: Stores door lock status, window position, and lighting profiles in automotive BCMs with cold-cranking capability. IC Role / Device Role / Timing Role: Industrial-grade memory surviving -40°C startup and retaining data during 6V cranking dips. Use Value: Supports ISO 16750-2 crank profile compliance without external voltage supervisors or backup switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62148EV30LL-70ZSXIT | 4Mb, 70ns, 32-pin TSOP, VCC = 2.2–5.5V, ISB = 1μA @ +25°C | Wider VCC range enables direct use with 3.3V systems; lacks guaranteed 2.0V data retention | Prefer for mixed-voltage designs where 3.3V compatibility outweighs minimum retention voltage requirement |
| AS6C4008-70PCN | 4Mb, 70ns, 32-pin SOP, VCC = 4.5–5.5V, ISB = 2μA @ +25°C, no specified 2.0V retention | Same package and timing but higher standby current; not characterized for sub-4.5V retention | Acceptable for cost-sensitive 5V-only applications where battery backup duration is less critical |
Compared with CY62148EV30LL-70ZSXIT and AS6C4008-70PCN, the R1LP0408DSP-7SI#B0 uniquely guarantees data retention at 2.0V with ≤10μA draw across -40°C to +85°C - a critical differentiator for long-duration battery backup in industrial and medical edge devices.
Availability
R1LP0408DSP-7SI#B0 is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, and telecom infrastructure requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
Supply support for R1LP0408DSP-7SI#B0 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and infrastructure markets.
The R1LP0408D Series was developed specifically for low-power, battery-backed memory applications in harsh-environment embedded systems - emphasizing ultra-low standby current, wide temperature operation, and robust data retention under brown-out conditions.
FAQ
What is the minimum VCC at which R1LP0408DSP-7SI#B0 retains data?
The R1LP0408DSP-7SI#B0 guarantees data retention down to VCC = 2.0V when CS# is held high and ambient temperature is ≤+85°C. At this voltage, standby current remains ≤10μA, enabling multi-year backup with small lithium batteries. This specification is explicitly tested and published in the "Low Vcc Data Retention Characteristics" table on page 11 of the R10DS0104EJ0200 datasheet.
Does R1LP0408DSP-7SI#B0 support true 5V TTL interfacing?
Yes, the R1LP0408DSP-7SI#B0 is fully TTL-compatible: input high voltage (VIH) is specified from 2.2V to VCC+0.3V, input low voltage (VIL) from -0.3V to 0.8V, and output high voltage (VOH) is ≥2.4V at -1mA load. All pins meet standard TTL thresholds across the full -40°C to +85°C range, allowing direct connection to legacy 5V microcontrollers and FPGAs without level-shifting circuitry.
What package type is used for R1LP0408DSP-7SI#B0?
The R1LP0408DSP-7SI#B0 is supplied in a 32-pin plastic SOP (Small Outline Package) with 525-mil body width, designated as PRSP0032DF-A (032P2S-A). It is shipped in tubes containing up to 25 units per tube, and is RoHS-compliant and lead-free per Renesas' environmental specifications.
How does the write cycle timing work for R1LP0408DSP-7SI#B0?
The R1LP0408DSP-7SI#B0 initiates a write when both CS# and WE# are low; the write pulse width (tWP) must be ≥50ns. Address must be valid before WE# goes low (tAS = 0ns), and data must be held for ≥0ns after WE# rises (tDH = 0ns). Two write modes are supported: OE#-gated (page 9) and OE#-low-fixed (page 10), with tWHZ ≤25ns ensuring fast bus release after write completion.
Is R1LP0408DSP-7SI#B0 qualified for automotive applications?
No, the R1LP0408DSP-7SI#B0 is rated for industrial temperature range (-40°C to +85°C) and classified by Renesas as a "Standard" quality grade product, intended for applications including industrial robots, test equipment, and office systems. It is not AEC-Q100 qualified and is not recommended for safety-critical automotive subsystems such as powertrain or ADAS.
R1LP0408DSP-7SI#B0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-SOIC (0.450", 11.40mm Width)
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOP
R1LP0408DSP-7SI#B0 FAQ
1.How can I place an order for R1LP0408DSP-7SI#B0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0408DSP-7SI#B0 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-7SI#B0 reliable?
The price and inventory of R1LP0408DSP-7SI#B0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LP0408DSP-7SI#B0 is usually 5 days.
3.What payment methods are accepted for R1LP0408DSP-7SI#B0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0408DSP-7SI#B0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0408DSP-7SI#B0?
R1LP0408DSP-7SI#B0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0408DSP-7SI#B0 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-7SI#B0?
For technical support, including R1LP0408DSP-7SI#B0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0408DSP-7SI#B0 requirements.
6.How does Aetrix verify that R1LP0408DSP-7SI#B0 is sourced from the original manufacturer or authorized distributors?
All R1LP0408DSP-7SI#B0 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-7SI#B0 meets industry standards.
7.What is the process for return or replacement of R1LP0408DSP-7SI#B0?
All R1LP0408DSP-7SI#B0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0408DSP-7SI#B0, 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-7SI#B0 part is unused and in its original packaging.
Return procedure for R1LP0408DSP-7SI#B0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LP0408DSP-7SI#B0 Tags
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