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Renesas R1LV0408DSP-5SR#B0
- Part No.:
- R1LV0408DSP-5SR#B0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-SOIC (0.450", 11.40mm Width)
- Datasheet:
-
R1LV0408DSP-5SR#B0.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 32SOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,014
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Product details
Overview
R1LV0408DSP-5SR#B0 from Renesas Electronics is a 4-Mbit static RAM organized as 512-kword × 8-bit, fabricated in 0.15 µm CMOS/TFT process. It operates from a single 3 V supply (2.7–3.6 V), delivers 55 ns max access time, and draws only 0.1 µA typical standby current. It is used in battery-backed memory subsystems for industrial controllers and portable instrumentation.
For engineers reviewing the R1LV0408DSP-5SR#B0 datasheet, R1LV0408DSP-5SR#B0 pinout, R1LV0408DSP-5SR#B0 application, or R1LV0408DSP-5SR#B0 equivalent, key selection criteria include low-voltage data retention (2 V min), TTL-compatible I/O, 32-pin SOP package compatibility, and guaranteed operation across 0°C to +70°C.
Technical Context
The R1LV0408DSP-5SR#B0 implements a synchronous SRAM architecture with common I/O bus, three-state outputs, and independent chip select (CS#), output enable (OE#), and write enable (WE#) controls. Its timing supports equal access and cycle times, enabling deterministic read/write sequencing without external wait-state logic.
It features dual power domains: VCC powers core logic and I/O drivers, while VSS serves as reference ground. The device enters ultra-low-power data retention mode when CS# is high and VCC ≥ 2.0 V, sustaining stored data with ICCDR ≤ 2.5 µA at +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 4 Mbit (512 kwords × 8 bits) - supports byte-wide data paths in microcontroller peripherals and FPGA configuration buffers |
| Supply voltage | 2.7–3.6 V - compatible with 3.3 V logic rails and tolerant of brown-out conditions down to 2.0 V for data retention |
| Access time | 55 ns max - enables direct interface with legacy 16–20 MHz microcontrollers without wait states |
| Standby current | 0.1 µA typ at +25°C - extends battery life in always-on backup memory applications beyond 10 years |
| I/O interface | TTL-compatible inputs/outputs - eliminates level-shifter requirements in mixed-voltage systems |
| Package | 32-pin SOP (525-mil) - standard footprint for through-hole and surface-mount assembly with 1.27 mm pitch |
| Temperature range | 0°C to +70°C - qualified for commercial-grade embedded control and test equipment environments |
Pinout & Package
Package: 32-pin plastic SOP (525-mil, 32P2M-A), JEDEC MS-012AC compliant, body size 19.15 mm × 8.25 mm, lead pitch 1.27 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address input | 19-bit address bus supporting full 512-kword decoding; A0 = LSB, A18 = MSB |
| I/O0–I/O7 | Data input/output | Bi-directional 8-bit data bus with three-state control; shares pins for read and write |
| CS# | Chip select | Active-low enable; places device in standby (ISB ≤ 0.3 mA) when high |
| OE# | Output enable | Active-low control for output drivers; high-Z when deasserted, regardless of CS# state |
| WE# | Write enable | Active-low write strobe; latches data on falling edge when CS# is active |
| VCC | Power supply | +2.7 V to +3.6 V main supply; powers internal logic and I/O buffers |
| VSS | Ground | Reference ground for all digital signals and internal circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply 3 V operation | Eliminates dual-rail power design complexity and reduces BOM count in portable and space-constrained systems |
| Low standby power dissipation | 3 µW typical (0.1 µA @ 3 V) enables multi-year battery backup without periodic refresh |
| Direct TTL compatibility | VIH = 2.2 V min and VIL = 0.6 V max ensure robust noise margin interfacing with legacy 5 V-tolerant microcontrollers |
| Common I/O bus with three-state outputs | Reduces PCB trace count and simplifies routing in dense layouts by sharing data lines between read and write cycles |
| Battery backup data retention | Maintains valid data at VCC ≥ 2.0 V with ICCDR ≤ 2.5 µA, supporting fail-safe logging during main power loss |
Applications
| Industrial PLC Data Logging | Portable Medical Instrumentation |
|---|---|
Use Scenario: Real-time acquisition and buffering of sensor readings in programmable logic controllers during mains power interruption. IC Role / Device Role / Timing Role: Non-volatile SRAM buffer holding last-known operational state and event timestamps. Use Value: Guarantees zero-data-loss retention for ≥10 years on coin-cell backup due to ISB1 ≤ 2.5 µA at +25°C. | Use Scenario: Storing calibration coefficients and patient session history in handheld ECG analyzers with intermittent USB charging. IC Role / Device Role / Timing Role: Battery-backed memory storing critical firmware parameters and diagnostic logs. Use Value: Supports reliable data hold at 2.0 V VCC with tCDR = 0 ns, enabling instant resume after power recovery. |
| Test Equipment Configuration Storage | Legacy Microcontroller Memory Expansion |
Use Scenario: Holding instrument setup profiles and measurement templates in benchtop multimeters and signal generators. IC Role / Device Role / Timing Role: External program/data RAM mapped into microcontroller address space via parallel bus interface. Use Value: 55 ns tAA allows seamless integration with 8051- and Z80-based controllers running at ≤18 MHz. | Use Scenario: Adding external RAM to 8-bit microcontrollers lacking sufficient on-chip memory for firmware overlays. IC Role / Device Role / Timing Role: Byte-wide memory expansion with CS#/OE#/WE# control matching standard 8080-style bus timing. Use Value: Equal tRC = tAA = 55 ns simplifies timing budgeting and avoids glue logic in cost-sensitive designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV25616AL-10TLI | 256K × 16-bit organization, 10 ns access, 48-pin TSOP | Higher density and speed but wider bus and incompatible pinout | Select when 16-bit data path and faster timing are required; requires PCB redesign |
| AS6C4008-55ZIN | 4-Mbit (512K × 8), 55 ns access, 32-pin SOP, 2.7–3.6 V | Near-identical electrical specs and package; different manufacturer qualification and screening | Drop-in alternative for second-source assurance; verify VCC=2.0 V retention behavior per application |
Compared with R1LV0408DSP-5SR#B0, the AS6C4008-55ZIN offers functionally identical timing and interface but differs in DC leakage and temperature characterization; the IS61LV25616AL-10TLI provides higher bandwidth at the cost of bus width and layout compatibility.
Availability
R1LV0408DSP-5SR#B0 is available at Aetrix Electronics and suitable for industrial PLC data logging, portable medical instrumentation, test equipment configuration storage, and legacy microcontroller memory expansion requiring stable component supply and long-term lifecycle support.
Supply support for R1LV0408DSP-5SR#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 delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and enterprise applications.
The R1LV0408D Series was designed specifically for low-power, battery-backed SRAM applications in commercial-grade embedded systems where reliability, small footprint, and extended data retention are critical.
FAQ
What is the minimum VCC required to retain data in R1LV0408DSP-5SR#B0?
The R1LV0408DSP-5SR#B0 guarantees data retention down to VCC = 2.0 V when CS# is held high (≥ VCC − 0.2 V). At this voltage, ICCDR remains ≤ 2.5 µA at +25°C, enabling multi-year backup on primary lithium cells. This specification is validated per the Low VCC Data Retention Characteristics table in the official Renesas datasheet REJ03C0310-0100.
Does R1LV0408DSP-5SR#B0 support true static operation without refresh?
Yes, R1LV0408DSP-5SR#B0 is a true static RAM and requires no refresh cycles. Its CMOS/TFT cell design maintains data indefinitely as long as VCC remains within specification and CS# is asserted appropriately. This eliminates timing-critical refresh overhead in microcontroller-based systems and ensures deterministic latency for real-time control loops.
What is the meaning of the "R" suffix in R1LV0408DSP-5SR#B0?
The "R" in R1LV0408DSP-5SR#B0 denotes the commercial temperature grade (0°C to +70°C), as defined in the Ordering Information table on page 2 of the Renesas datasheet REJ03C0310-0100. It distinguishes this variant from the industrial-grade "I" version (−40°C to +85°C) and confirms qualification for non-automotive, non-military commercial applications.
Can R1LV0408DSP-5SR#B0 be interfaced directly with a 5 V microcontroller?
R1LV0408DSP-5SR#B0 inputs are TTL-compatible (VIH = 2.2 V min, VIL = 0.6 V max), so 5 V logic HIGH signals meet VIH requirements. However, its outputs swing only to VOH ≈ 2.4 V (IOH = −1.0 mA), which may fall below the VIH threshold of some 5 V CMOS receivers. A level shifter or pull-up resistor network is recommended for reliable 5 V system interfacing.
What package type does R1LV0408DSP-5SR#B0 use, and is it RoHS compliant?
R1LV0408DSP-5SR#B0 uses a 32-pin plastic SOP (525-mil, 32P2M-A) package. Per Renesas documentation and product change notices, this part is RoHS compliant and lead-free, meeting EU Directive 2011/65/EU requirements. The "#B0" suffix confirms lead-free finish and green molding compound per Renesas standard packaging nomenclature.
R1LV0408DSP-5SR#B0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-SOIC (0.450", 11.40mm Width)
- Packaging:
- Tray
- 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:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOP
R1LV0408DSP-5SR#B0 FAQ
1.How can I place an order for R1LV0408DSP-5SR#B0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LV0408DSP-5SR#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 R1LV0408DSP-5SR#B0 reliable?
The price and inventory of R1LV0408DSP-5SR#B0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LV0408DSP-5SR#B0 is usually 5 days.
3.What payment methods are accepted for R1LV0408DSP-5SR#B0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LV0408DSP-5SR#B0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LV0408DSP-5SR#B0?
R1LV0408DSP-5SR#B0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LV0408DSP-5SR#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 R1LV0408DSP-5SR#B0?
For technical support, including R1LV0408DSP-5SR#B0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LV0408DSP-5SR#B0 requirements.
6.How does Aetrix verify that R1LV0408DSP-5SR#B0 is sourced from the original manufacturer or authorized distributors?
All R1LV0408DSP-5SR#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 R1LV0408DSP-5SR#B0 meets industry standards.
7.What is the process for return or replacement of R1LV0408DSP-5SR#B0?
All R1LV0408DSP-5SR#B0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LV0408DSP-5SR#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 R1LV0408DSP-5SR#B0 part is unused and in its original packaging.
Return procedure for R1LV0408DSP-5SR#B0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LV0408DSP-5SR#B0 Tags
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