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Renesas R1LP0408DSP-5SR#B0
- Part No.:
- R1LP0408DSP-5SR#B0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-SOIC (0.450", 11.40mm Width)
- Datasheet:
-
R1LP0408DSP-5SR#B0.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 32SOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,075
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Product details
Overview
R1LP0408DSP-5SR#B0 from Renesas Electronics is a 4Mb advanced low-power static RAM (512-kword × 8-bit), designed for battery-backed memory applications requiring single 5V supply operation (4.5–5.5V), 55ns max access time, and ultra-low standby current (0.8μA at +40°C). It serves as non-volatile data retention memory in industrial controllers and embedded instrumentation.
For engineers reviewing the R1LP0408DSP-5SR#B0 datasheet, R1LP0408DSP-5SR#B0 pinout, R1LP0408DSP-5SR#B0 application, or R1LP0408DSP-5SR#B0 equivalent, this page delivers verified specifications, SOP-32 pin mapping, real-world use cases, and validated alternative parts for drop-in or functional substitution in legacy 5V SRAM designs.
Technical Context
This device implements a full CMOS static RAM architecture with separate address latching, three-state bidirectional I/Os, and TTL-compatible input/output levels. Its timing logic supports simultaneous read/write cycle control via independent CS#, WE#, and OE# signals, enabling direct interface with microcontrollers and ASICs without external glue logic.
The R1LP0408DSP-5SR#B0 features dual-mode operation: active read/write mode with typical operating current of 5mA, and deep standby mode with sub-microamp ICCDR (≤2.5μA at +25°C) under Vcc ≥2.0V - critical for long-term data retention during main power loss in metering and alarm systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512-kword × 8-bit) - provides sufficient buffer space for firmware variables and real-time sensor logs in compact embedded systems. |
| Access Time | 55 ns (max) - enables reliable interfacing with 12–16 MHz microcontrollers without wait states. |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5V logic rails and tolerant of ±10% regulation drift. |
| Standby Current | 0.8 μA at +40°C - ensures >10-year battery backup life using a single CR2032 cell in low-duty-cycle monitoring devices. |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade industrial equipment deployed in controlled indoor environments. |
| Package | 32-pin SOP (525-mil, PRSP0032DF-A) - surface-mount compatible with standard reflow profiles and manual repair accessibility. |
| Data Retention Vcc | 2.0 V minimum - maintains stored data during brown-out conditions where main supply drops but backup rail remains active. |
Pinout & Package
Package: 32-pin plastic SOP (525-mil width), JEDEC standard PRSP0032DF-A footprint, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address inputs | 19-bit address bus supporting full 512-kword decoding; A18 is MSB for 4Mbit addressing. |
| I/O0–I/O7 | Bidirectional data bus | Three-state CMOS I/Os compatible with TTL logic levels; shared read/write path reduces PCB trace count. |
| CS# | Chip select (active low) | Primary enable signal; places device in standby when high, enabling system-level power gating. |
| WE# | Write enable (active low) | Controls write cycle initiation; combined with CS# determines valid write window per timing spec tWP ≥40ns. |
| OE# | Output enable (active low) | Gates output drivers only; allows read operations while WE# remains high, supporting memory-mapped I/O reads. |
| Vcc | Power supply | 5V core supply; decoupling capacitor (0.1μF) required within 5mm of pin for stable AC operation. |
| Vss | Ground | Dedicated ground reference; must be connected to low-impedance system ground plane to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Single 5V supply operation | Eliminates need for dual-rail regulators or level shifters in legacy 5V systems, reducing BOM cost and layout complexity. |
| Low standby power dissipation | 0.8μA typical at +40°C enables multi-year battery backup without periodic refresh or external supervision circuitry. |
| TTL-compatible I/O | VIH ≥2.2V and VOL ≤0.4V ensure direct connection to 8051, Z80, and older FPGA families without interface buffers. |
| Common data I/O bus | Reduces pin count and PCB routing layers versus separate DQ/DQ̅ schemes, simplifying board layout for space-constrained modules. |
| Equal access and cycle times | tRC = tAA = 55ns eliminates timing margin uncertainty between successive reads/writes, easing timing closure in synchronous designs. |
Applications
| Industrial Data Logger | Energy Meter Firmware Buffer |
|---|---|
Use Scenario: Stores timestamped sensor readings and calibration coefficients during mains power interruption. IC Role / Device Role / Timing Role: Non-volatile SRAM holding critical runtime data; retains content at Vcc ≥2.0V during brown-out events. Use Value: Enables seamless recovery after power restoration without data loss or reinitialization delay. |
Use Scenario: Buffers billing parameters and tariff tables updated daily via PLC or RF link. IC Role / Device Role / Timing Role: High-reliability scratchpad memory interfaced directly to 8-bit MCU data bus. Use Value: Supports deterministic 55ns read cycles for real-time energy calculation without CPU wait states. |
| Medical Diagnostic Monitor | Point-of-Sale Terminal Cache |
Use Scenario: Holds last-known vital sign history and alarm thresholds during brief battery switchover. IC Role / Device Role / Timing Role: Battery-backed memory maintaining state integrity across power source transitions. Use Value: Meets IEC 60601-1 requirement for uninterrupted data retention during 10ms AC dropout. |
Use Scenario: Caches transaction records and tax tables for offline operation during network outages. IC Role / Device Role / Timing Role: Fast-access local memory mapped to processor address space for zero-latency retrieval. Use Value: Sustains full transaction throughput (≥100 ops/sec) even when Ethernet/WiFi is unavailable. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power 4Mb SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV25616AL-10TLI | 10ns faster access (45ns), 16-bit bus (vs. 8-bit), 3.3V-only supply (3.0–3.6V) | Requires level translation and bus-width adaptation; unsuitable for direct 5V replacement | Select only if upgrading to 3.3V system with higher bandwidth needs and redesign allowance. |
| AS6C4008-55ZIN | Same 55ns speed, 5V supply, and 8-bit bus; 32-pin TSOP-II package (vs. SOP) | Identical electrical behavior but different mechanical footprint - requires PCB layout change | Choose for higher-density board assembly where TSOP thermal and space advantages outweigh rework cost. |
Compared with R1LP0408DSP-5SR#B0, IS61LV25616AL-10TLI offers higher performance at lower voltage but mandates system-level redesign, while AS6C4008-55ZIN provides identical timing and voltage compatibility with only a package swap - making it the closest functional and electrical match for 5V legacy upgrades.
Availability
R1LP0408DSP-5SR#B0 is available at Aetrix Electronics and suitable for industrial data loggers, energy meters, medical monitors, and point-of-sale terminals requiring stable component supply and long-term lifecycle support.
Supply support for R1LP0408DSP-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 is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and memory solutions for industrial, automotive, and infrastructure markets.
The R1LP0408D Series was developed to replace aging 5V SRAMs in legacy industrial equipment, emphasizing ultra-low standby power and direct TTL compatibility without design revision.
FAQ
What is the maximum operating temperature range for R1LP0408DSP-5SR#B0?
The R1LP0408DSP-5SR#B0 is rated for 0°C to +70°C ambient operation, as indicated by the "R" suffix in its part number. This commercial-grade temperature range suits indoor industrial controls, test equipment, and consumer electronics where environmental extremes are not encountered. The device does not support extended -40°C to +85°C operation - that capability is reserved for variants with "I" suffix like R1LP0408DSP-5SI#B0.
Does R1LP0408DSP-5SR#B0 support true data retention at voltages below 4.5V?
Yes, R1LP0408DSP-5SR#B0 guarantees data retention down to Vcc = 2.0V when CS# is held high, with typical retention current of 0.8μA at +40°C. This feature is explicitly characterized in the Low Vcc Data Retention section of the datasheet and enables reliable battery-backup operation during brown-out conditions without external supervision circuitry.
Can R1LP0408DSP-5SR#B0 be used with a 3.3V microcontroller interface?
No, R1LP0408DSP-5SR#B0 is strictly a 5V-only device with VIH minimum of 2.2V and VIL maximum of 0.8V - it lacks 3.3V-tolerant inputs. Direct connection to 3.3V logic risks violating input voltage limits and may cause excessive leakage or latch-up. Level-shifting circuitry or a 5V-compatible controller is required for safe integration.
What is the pin 1 marking method for R1LP0408DSP-5SR#B0 in its SOP package?
R1LP0408DSP-5SR#B0 uses standard JEDEC SOP-32 marking: a laser-etched dot or notch located at the top-left corner of the package body adjacent to pin 1. The device follows PRSP0032DF-A mechanical outline, with pin 1 positioned at the left end of the top row when the notch faces upward and leads extend downward.
How does the standby current of R1LP0408DSP-5SR#B0 compare to similar 4Mb SRAMs?
R1LP0408DSP-5SR#B0 achieves 0.8μA typical standby current at +40°C, which is up to 5× lower than standard 4Mb SRAMs like HM62256 (typically 1–2mA). This ultra-low ISB stems from Renesas's TFT-based low-leakage process and optimized internal biasing - a key differentiator for battery-critical applications where every nanoamp affects service life.
R1LP0408DSP-5SR#B0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-SOIC (0.450", 11.40mm Width)
- Packaging:
- Tray
- Product Status:
- Active
- 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOP
R1LP0408DSP-5SR#B0 FAQ
1.How can I place an order for R1LP0408DSP-5SR#B0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0408DSP-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 R1LP0408DSP-5SR#B0 reliable?
The price and inventory of R1LP0408DSP-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 R1LP0408DSP-5SR#B0 is usually 5 days.
3.What payment methods are accepted for R1LP0408DSP-5SR#B0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0408DSP-5SR#B0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0408DSP-5SR#B0?
R1LP0408DSP-5SR#B0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0408DSP-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 R1LP0408DSP-5SR#B0?
For technical support, including R1LP0408DSP-5SR#B0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0408DSP-5SR#B0 requirements.
6.How does Aetrix verify that R1LP0408DSP-5SR#B0 is sourced from the original manufacturer or authorized distributors?
All R1LP0408DSP-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 R1LP0408DSP-5SR#B0 meets industry standards.
7.What is the process for return or replacement of R1LP0408DSP-5SR#B0?
All R1LP0408DSP-5SR#B0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0408DSP-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 R1LP0408DSP-5SR#B0 part is unused and in its original packaging.
Return procedure for R1LP0408DSP-5SR#B0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LP0408DSP-5SR#B0 Tags
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