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Renesas R1LV0408DSP-7LR#S0
- Part No.:
- R1LV0408DSP-7LR#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- -
- Datasheet:
-
R1LV0408DSP-7LR#S0.pdf
- Description:
- STANDARD SRAM, 512KX8
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
R1LV0408DSP-7LR#S0 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 2.7–3.6 V supply, delivers 70 ns max access time, and draws only 10 µA typical standby current at +25°C - making it suitable for battery-backed memory buffering in portable instrumentation and industrial controllers.
For engineers reviewing the R1LV0408DSP-7LR#S0 datasheet, R1LV0408DSP-7LR#S0 pinout, R1LV0408DSP-7LR#S0 application, or R1LV0408DSP-7LR#S0 equivalent, key selection criteria include its 32-pin SOP package, TTL-compatible I/O, common data bus architecture, low-voltage data retention down to 2.0 V, and −40°C to +85°C industrial temperature grade.
Technical Context
The R1LV0408DSP-7LR#S0 implements a full asynchronous SRAM architecture with independent address decoding (A0–A18), three-state bidirectional I/O (I/O0–I/O7), and standard control signals (CS#, OE#, WE#). Its timing supports equal read/write cycle times (tRC = tWC = 70 ns max) and guarantees output high-Z within 25 ns of CS# or OE# deassertion.
It features dual power modes: active operation with ICC ≤ 10 mA under full cycling, and ultra-low-power standby (ISB1 ≤ 10 µA at +25°C) enabled by CS# high. Data retention is maintained at VCC ≥ 2.0 V with ICCDR ≤ 10 µA, supporting nonvolatile backup without external capacitors or supercaps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 4 Mbit (512 kwords × 8 bits) - supports byte-wide data paths without multiplexing |
| Supply voltage | 2.7–3.6 V - compatible with 3.3 V logic rails and tolerant of brownout conditions |
| Access time | 70 ns max - defines minimum clock period for synchronous interface glue logic |
| Standby current | 10 µA typ at +25°C - enables multi-year battery life in always-on backup mode |
| Data retention VCC | 2.0 V min - allows retention during deep sleep or partial power-down without auxiliary circuitry |
| I/O interface | TTL-compatible inputs/outputs - eliminates level-shifting in legacy 3.3 V microcontroller systems |
| Operating temp | −40°C to +85°C - qualified for industrial edge nodes and factory automation equipment |
Pinout & Package
Package: 32-pin plastic SOP (32P2M-A), 525-mil width, JEDEC MS-012AC compliant, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address input | 19-bit address bus enabling full 512-kword addressing without external latching |
| I/O0–I/O7 | Bidirectional data bus | Common I/O pins reduce PCB trace count and simplify routing versus separate DQ/DQ̅ |
| CS# | Chip select | Active-low enable controlling device activation and high-Z output state |
| OE# | Output enable | Independent read-gating signal allowing output disable without deselecting chip |
| WE# | Write enable | Active-low write strobe synchronized with CS# to define write window boundaries |
| VCC | Power supply | Single 3.3 V supply pin - no VIO or auxiliary rails required |
| VSS | Ground | Dedicated ground pin adjacent to VCC for stable decoupling and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply 3 V operation | Eliminates need for dual-rail regulators or charge pumps in space-constrained designs |
| 70 ns read/write cycle time | Enables direct interfacing with 14 MHz microcontrollers without wait states |
| 10 µA typical standby current | Supports >5-year coin-cell battery life in tamper-detection or real-time logging applications |
| 2.0 V data retention threshold | Permits seamless transition to backup power without data loss during main supply interruption |
| TTL-compatible I/O | Guarantees interoperability with legacy FPGA, CPLD, and microcontroller families without level shifters |
Applications
| Industrial Data Logger | Medical Patient Monitor Buffer |
|---|---|
Use Scenario: Continuous acquisition of sensor data (ECG, SpO₂) with periodic flash offload. IC Role / Device Role / Timing Role: High-reliability, low-power SRAM buffer holding raw waveform samples between processor wake cycles. Use Value: 10 µA standby current extends battery runtime; 2.0 V retention prevents data loss during brief power dips in mobile units. | Use Scenario: Real-time display buffering and alarm-triggered snapshot capture in bedside monitors. IC Role / Device Role / Timing Role: Byte-accessible scratchpad memory for frame storage and interrupt-driven data capture. Use Value: 70 ns access time ensures glitch-free display updates; −40°C to +85°C rating supports operation in uncontrolled clinical environments. |
| Programmable Logic Controller (PLC) I/O Cache | Automated Test Equipment (ATE) Pattern Memory |
Use Scenario: Storing transient I/O state and configuration registers in DIN-rail mounted PLCs. IC Role / Device Role / Timing Role: Nonvolatile shadow RAM holding critical control variables during firmware updates or brownouts. Use Value: CS#-controlled retention mode maintains state across power cycles without external backup components. | Use Scenario: Storing test vectors and expected response patterns in benchtop ATE systems. IC Role / Device Role / Timing Role: High-speed pattern memory accessed synchronously by FPGA-based sequencers. Use Value: TTL-compatible I/O and 70 ns timing allow direct connection to Xilinx Spartan-3/6 I/O banks without timing closure penalties. |
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, 10 ns access, 44-pin TSOP - higher density but wider bus and faster speed | Requires 16-bit data path and tighter timing margins; not drop-in for 8-bit systems | Select only if migrating to 16-bit architecture and requiring sub-15 ns performance |
| AS6C4008-70ZIN | 4-Mbit × 8-bit, 70 ns access, 32-pin SOP - same organization and speed, but 2.7–5.5 V supply range | Broader VCC tolerance suits mixed-voltage boards; slightly higher ISB (25 µA typ) | Prefer when system includes 5 V peripherals or requires margin against supply ripple |
Compared with R1LV0408DSP-7LR#S0, the IS61LV25616AL-10TLI offers greater bandwidth but demands PCB redesign, while the AS6C4008-70ZIN provides identical pinout and timing with relaxed supply requirements at modest standby cost.
Availability
R1LV0408DSP-7LR#S0 is available at Aetrix Electronics and suitable for industrial data loggers, medical patient monitors, programmable logic controllers, automated test equipment, and battery-backed instrumentation requiring stable component supply over extended production lifecycles.
Supply support for R1LV0408DSP-7LR#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 specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and infrastructure markets.
The R1LV0408D Series was designed specifically for low-power, high-reliability SRAM applications in battery-operated and thermally demanding environments - emphasizing data retention integrity and long-term supply stability.
FAQ
What is the maximum operating temperature range for the R1LV0408DSP-7LR#S0?
The R1LV0408DSP-7LR#S0 is rated for −40°C to +85°C operation, as indicated by the 'I' temperature suffix in its ordering code. This industrial-grade specification ensures reliable functionality in factory automation, outdoor telemetry, and transportation control systems where ambient temperatures exceed commercial limits. The device maintains full AC/DC parametric compliance across this entire range per its Rev.1.00 datasheet.
Does the R1LV0408DSP-7LR#S0 support true static operation without refresh cycles?
Yes, the R1LV0408DSP-7LR#S0 is a fully static RAM: it retains data indefinitely as long as VCC remains within 2.7–3.6 V and CS# is held high, with no external refresh circuitry required. Its internal cell design uses six-transistor latches, eliminating the need for periodic access - a key distinction from DRAM or pseudo-SRAM devices. This simplifies firmware and reduces system-level timing constraints.
Can the R1LV0408DSP-7LR#S0 be used with a 3.3 V microcontroller without level shifters?
Yes, the R1LV0408DSP-7LR#S0 features TTL-compatible inputs and outputs, with VIH(min) = 2.2 V and VOH(min) = 2.4 V at IOH = −1.0 mA - fully aligned with 3.3 V LVTTL logic thresholds. Its I/O structure drives directly into standard 3.3 V microcontroller GPIOs, including those on ARM Cortex-M, Renesas RX, and older 8051 derivatives, without translation hardware.
What is the data retention capability of the R1LV0408DSP-7LR#S0 during power loss?
The R1LV0408DSP-7LR#S0 retains stored data down to VCC = 2.0 V while drawing ≤10 µA (typ) at +25°C, as specified in its Low VCC Data Retention Characteristics table. This allows integration with simple diode-OR or supercapacitor backup schemes, sustaining memory contents through brownouts lasting seconds to minutes - critical for preserving fault logs or calibration data in mission-critical systems.
Is the R1LV0408DSP-7LR#S0 pin-compatible with other devices in the R1LV0408D family?
Yes, all R1LV0408D variants - including R1LV0408DSP-5S%, R1LV0408DSB-7L%, and R1LV0408DSA-7L% - share identical 32-pin pinouts and signal assignments regardless of package (SOP/TSOP/STSOP) or speed grade (55 ns/70 ns). The R1LV0408DSP-7LR#S0 therefore allows direct substitution within the same SOP footprint, provided timing margins accommodate the 70 ns specification.
R1LV0408DSP-7LR#S0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- -
- Memory Format:
- -
- Technology:
- -
- Memory Size:
- -
- Memory Organization:
- -
- Memory Interface:
- -
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
R1LV0408DSP-7LR#S0 FAQ
1.How can I place an order for R1LV0408DSP-7LR#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LV0408DSP-7LR#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 R1LV0408DSP-7LR#S0 reliable?
The price and inventory of R1LV0408DSP-7LR#S0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LV0408DSP-7LR#S0 is usually 5 days.
3.What payment methods are accepted for R1LV0408DSP-7LR#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LV0408DSP-7LR#S0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LV0408DSP-7LR#S0?
R1LV0408DSP-7LR#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LV0408DSP-7LR#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 R1LV0408DSP-7LR#S0?
For technical support, including R1LV0408DSP-7LR#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LV0408DSP-7LR#S0 requirements.
6.How does Aetrix verify that R1LV0408DSP-7LR#S0 is sourced from the original manufacturer or authorized distributors?
All R1LV0408DSP-7LR#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 R1LV0408DSP-7LR#S0 meets industry standards.
7.What is the process for return or replacement of R1LV0408DSP-7LR#S0?
All R1LV0408DSP-7LR#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LV0408DSP-7LR#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 R1LV0408DSP-7LR#S0 part is unused and in its original packaging.
Return procedure for R1LV0408DSP-7LR#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LV0408DSP-7LR#S0 Tags
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