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Renesas R1LV0408DSA-7LR#B0
- Part No.:
- R1LV0408DSA-7LR#B0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-TFSOP (0.465", 11.80mm Width)
- Datasheet:
-
R1LV0408DSA-7LR#B0.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 32TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:14,875
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Product details
Overview
R1LV0408DSA-7LR#B0 from Renesas Electronics is a 4-Mbit static RAM organized as 512-kword × 8-bit, fabricated using 0.15 µm CMOS and TFT technologies. It operates from a single 3 V supply (2.7–3.6 V), delivers 70 ns max access time, consumes only 10 µA typical standby current at +25°C, and uses an 8 mm × 13.4 mm STSOP package. It serves as non-volatile data buffer in battery-backed industrial controllers.
For engineers reviewing the R1LV0408DSA-7LR#B0 datasheet, R1LV0408DSA-7LR#B0 pinout, R1LV0408DSA-7LR#B0 application, or R1LV0408DSA-7LR#B0 equivalent, key selection criteria include low-VCC data retention down to 2 V, TTL-compatible I/O timing, 32-pin STSOP footprint compatibility, and verified operation across −40°C to +85°C.
Technical Context
The R1LV0408DSA-7LR#B0 implements asynchronous SRAM architecture with full address decoding (A0–A18), common bidirectional I/O lines (I/O0–I/O7), and three independent control signals: CS#, OE#, and WE#. Its timing supports equal read/write cycle times and guarantees output high-Z within 25 ns after CS# or OE# deassertion.
It features direct TTL-level interface compatibility on all pins, requires no external refresh circuitry, and enters ultra-low-power data retention mode when CS# is held high and VCC ≥ 2 V - enabling reliable backup operation without auxiliary power sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 4 Mbit (512 kwords × 8 bits) - supports 64 KB byte-addressable data buffers |
| Supply voltage | 2.7–3.6 V - compatible with standard 3.3 V logic rails and brown-out tolerant |
| Access time | 70 ns max - ensures deterministic timing for microcontroller bus interfaces |
| Standby current | 10 µA typ at +25°C - enables multi-year battery life in always-on backup systems |
| Data retention VCC | 2 V min - retains memory contents during deep sleep or partial power loss |
| Operating temperature | −40°C to +85°C - qualified for extended industrial environments |
| Package | 32-pin STSOP (8 mm × 13.4 mm) - surface-mount compatible with automated assembly |
Pinout & Package
Package: 32-pin STSOP (8 mm × 13.4 mm, 32P3K-B), RoHS-compliant plastic body with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address inputs | 19-bit address bus supporting full 512-kword decoding |
| I/O0–I/O7 | Bidirectional data bus | Common 8-bit data path with 3-state output control |
| CS# | Chip select | Active-low enable controlling device activation and standby entry |
| OE# | Output enable | Active-low control for read-data output gating |
| WE# | Write enable | Active-low signal initiating write cycles with overlap timing |
| VCC | Power supply | Primary 3 V supply pin; decoupling required per JEDEC guidelines |
| VSS | Ground | Signal and power return reference; must be low-impedance |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply 3 V operation | Eliminates need for dual-rail supplies or level shifters in 3.3 V systems |
| 70 ns access with equal tRC/tWC | Simplifies bus timing design by removing asymmetric read/write constraints |
| TTL-compatible I/O levels | Direct interface with legacy microcontrollers and FPGAs without translation logic |
| 3-state output drivers | Enables shared-bus operation without external bus transceivers |
| Low-VCC data retention | Maintains stored data at 2 V supply - critical for battery-fail-safe applications |
Applications
| Industrial PLC Data Buffer | Medical Device Event Log |
|---|---|
Use Scenario: Storing real-time sensor readings and fault codes in programmable logic controllers during mains power interruption. IC Role / Device Role / Timing Role: Asynchronous SRAM providing fast, non-refreshing storage with guaranteed data hold at 2 V. Use Value: Enables >10-year battery-backed retention without capacitor-based backup or FRAM cost premium. | Use Scenario: Capturing timestamped diagnostic events in portable ultrasound units between AC power cycles. IC Role / Device Role / Timing Role: Byte-wide memory buffer interfacing directly to ARM Cortex-M4 bus with 70 ns timing compliance. Use Value: Eliminates external level-shifting and reduces BOM count versus 5 V SRAM alternatives. |
| Automotive Telematics Black Box | Smart Meter Firmware Cache |
Use Scenario: Recording vehicle CAN bus anomalies during ignition-off periods using supercapacitor hold-up. IC Role / Device Role / Timing Role: Low-leakage SRAM holding crash-triggered logs with <10 µA ISB1 at +25°C. Use Value: Extends supercapacitor runtime by >3× compared to standard 32-pin TSOP SRAMs. | Use Scenario: Caching firmware update payloads in utility meters during over-the-air download windows. IC Role / Device Role / Timing Role: High-reliability 8-bit data path supporting burst reads under intermittent 3.3 V supply dips. Use Value: Prevents firmware corruption during brown-out conditions via guaranteed 2 V data retention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar asynchronous SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV25616AL-10TLI | 16-bit bus, 10 ns faster access, 44-pin TSOP | Requires PCB redesign; higher bandwidth but incompatible pinout and data width | Select only if system demands 16-bit parallel interface and tighter timing margins |
| AS6C4008-70SCN | Same 8-bit × 512k organization, 70 ns speed, 32-pin SOP | Wider 525-mil SOP package; lacks −40°C to +85°C rating (0°C to +70°C only) | Acceptable for commercial-temperature applications where STSOP footprint is not mandatory |
Compared with IS61LV25616AL-10TLI and AS6C4008-70SCN, the R1LV0408DSA-7LR#B0 uniquely combines industrial temperature range, STSOP space savings, and 2 V data retention - making it optimal for compact, battery-resilient embedded systems where pin compatibility and low-VCC robustness are primary constraints.
Availability
R1LV0408DSA-7LR#B0 is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, automotive telematics, and smart metering requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for R1LV0408DSA-7LR#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and infrastructure markets.
The R1LV0408D Series was designed specifically for low-power, battery-backed SRAM applications demanding industrial-grade reliability, minimal standby current, and seamless integration into 3.3 V microcontroller buses.
FAQ
What is the maximum operating temperature range for R1LV0408DSA-7LR#B0?
The R1LV0408DSA-7LR#B0 is rated for operation from −40°C to +85°C. This industrial temperature grade is confirmed in the ordering information table (page 2 of REJ03C0310-0100) where the "R" suffix denotes 0°C to +70°C and "I" denotes −40°C to +85°C; the "#B0" suffix corresponds to the I-version. The device maintains full DC and AC specifications across this full range.
Does R1LV0408DSA-7LR#B0 support true data retention at 2 V?
Yes, R1LV0408DSA-7LR#B0 guarantees data retention at VCC = 2 V minimum, as specified in the Low VCC Data Retention Characteristics table (page 12). At this voltage, with CS# held high and ambient temperature ≤ +85°C, the device draws ≤10 µA and retains stored data indefinitely - a core feature validated for battery backup use cases.
What package type does R1LV0408DSA-7LR#B0 use?
R1LV0408DSA-7LR#B0 uses an 8 mm × 13.4 mm STSOP (Shrink Thin Small Outline Package) with 32 gull-wing leads (package code 32P3K-B). This is explicitly stated in the Ordering Information table (page 2) and distinguishes it from the SOP and TSOP II variants in the same R1LV0408D family.
Is R1LV0408DSA-7LR#B0 pin-compatible with other R1LV0408D variants?
No - while all R1LV0408D variants share identical pin functions and 32-pin count, the R1LV0408DSA-7LR#B0 uses the STSOP package (32P3K-B), whereas R1LV0408DSP-7L% uses 525-mil SOP (32P2M-A) and R1LV0408DSB-7L% uses 400-mil TSOP II (32P3Y-H). Mechanical dimensions and solder pad layouts differ; PCB layout is not interchangeable.
What is the standby current specification for R1LV0408DSA-7LR#B0 at +25°C?
At +25°C, the typical standby current (ISB1) for R1LV0408DSA-7LR#B0 is 10 µA, with a maximum of 2.5 µA under the −7L% speed grade and +25°C condition (page 6, DC Characteristics table). This ultra-low leakage enables multi-year operation on coin-cell batteries in backup configurations.
R1LV0408DSA-7LR#B0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-TFSOP (0.465", 11.80mm Width)
- Packaging:
- Bulk
- 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:
- 2.7V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP I
R1LV0408DSA-7LR#B0 FAQ
1.How can I place an order for R1LV0408DSA-7LR#B0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LV0408DSA-7LR#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 R1LV0408DSA-7LR#B0 reliable?
The price and inventory of R1LV0408DSA-7LR#B0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LV0408DSA-7LR#B0 is usually 5 days.
3.What payment methods are accepted for R1LV0408DSA-7LR#B0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LV0408DSA-7LR#B0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LV0408DSA-7LR#B0?
R1LV0408DSA-7LR#B0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LV0408DSA-7LR#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 R1LV0408DSA-7LR#B0?
For technical support, including R1LV0408DSA-7LR#B0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LV0408DSA-7LR#B0 requirements.
6.How does Aetrix verify that R1LV0408DSA-7LR#B0 is sourced from the original manufacturer or authorized distributors?
All R1LV0408DSA-7LR#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 R1LV0408DSA-7LR#B0 meets industry standards.
7.What is the process for return or replacement of R1LV0408DSA-7LR#B0?
All R1LV0408DSA-7LR#B0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LV0408DSA-7LR#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 R1LV0408DSA-7LR#B0 part is unused and in its original packaging.
Return procedure for R1LV0408DSA-7LR#B0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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