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Renesas R1LP0408DSB-5SR#S0
- Part No.:
- R1LP0408DSB-5SR#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-SOIC (0.400", 10.16mm Width)
- Datasheet:
-
R1LP0408DSB-5SR#S0.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 32TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:11,865
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Product details
Overview
R1LP0408DSB-5SR#S0 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 55ns max access time, consumes only 0.8μA typical standby current at +25°C, and is housed in a 400-mil 32-pin TSOP(II) package.
For engineers reviewing the R1LP0408DSB-5SR#S0 datasheet, R1LP0408DSB-5SR#S0 pinout, R1LP0408DSB-5SR#S0 application, or R1LP0408DSB-5SR#S0 equivalent, this page provides verified technical context, real-world timing behavior, low-power retention specs, TSOP(II) footprint details, and validated alternative options for industrial backup SRAM selection.
Technical Context
The R1LP0408DSB-5SR#S0 implements a 2,048 × 2,048 memory matrix with full TTL-compatible inputs/outputs and three-state bidirectional I/O lines. Its read/write control logic responds to independent CS#, WE#, and OE# signals, supporting both OE#-gated and OE#-fixed write cycles with defined tDW, tWHZ, and tWP timing constraints.
It features dual-mode operation: standard active mode (ICC ≤ 10mA) and ultra-low-power data retention mode (VDR ≥ 2.0V, ICCDR ≤ 10μA at +85°C), enabled by high-impedance control of address, data, and control pins when CS# is deasserted under low VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512-kword × 8-bit) - supports 64KB byte-addressable storage without external decoding |
| Access Time | 55 ns (max) - enables direct interface with 15–18 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 variation |
| Standby Current | 0.8 μA (typ @ +25°C) - extends battery life to years in always-on backup systems |
| Data Retention VCC | 2.0 V minimum - maintains stored data during brown-out or primary power loss |
| Package | 400-mil 32-pin TSOP(II), PTBS0032DC-A - surface-mount footprint with 0.5mm pitch, JEDEC-standard height |
| Operating Temp | 0°C to +70°C - qualified for commercial and industrial ambient environments |
Pinout & Package
Package: 400-mil 32-pin plastic TSOP(II), standardized footprint per JEDEC MO-153 (PTSB0032DC-A / 032PTY-A), 0.5mm lead pitch, 1.2mm max body height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Vcc | Power supply input | Primary 5V rail connection; requires local 0.1μF decoupling |
| Vss | Ground reference | Common return path for all digital and I/O circuits |
| A0–A18 | Address inputs | 19-bit address bus supporting full 512k-word addressing (A18 used) |
| I/O0–I/O7 | Bidirectional data bus | Three-state CMOS I/O lines; high-impedance when CS# or OE# inactive |
| CS# | Chip select (active low) | Enables memory array and buffers; controls entry into data retention mode |
| WE# | Write enable (active low) | Initiates write cycle; latches data on falling edge when CS# is asserted |
| OE# | Output enable (active low) | Gates output drivers; allows read data to appear on I/O lines during CS# active |
Key Features
| Feature | Design Value |
|---|---|
| Single 5V supply operation | Eliminates need for dual-rail regulators or level shifters in legacy 5V systems |
| 55ns access with equal tRC/tAA | Ensures deterministic timing margins across read/write cycles without asymmetry penalties |
| 0.8μA standby current (typ) | Reduces annual battery drain to <10μAh in coin-cell–powered backup applications |
| 2.0V data retention threshold | Preserves memory contents during extended power interruption without external hold-up circuitry |
| TTL-compatible I/O levels | Direct interfacing with 74LS, 80Cxx, and other 5V microcontrollers without translation |
Applications
| Industrial PLC Data Buffer | Medical Device Event Log Storage |
|---|---|
Use Scenario: Storing runtime configuration and fault logs in programmable logic controllers during mains power loss. IC Role / Device Role / Timing Role: Nonvolatile backup SRAM holding critical state data while main system powers down gracefully. Use Value: Maintains 64KB of operational history with <0.8μA quiescent draw, enabling >5-year coin-cell lifetime without refresh. |
Use Scenario: Capturing timestamped diagnostic events in portable ECG monitors between battery charges. IC Role / Device Role / Timing Role: Low-latency, low-power scratchpad memory buffering real-time sensor data before flash transfer. Use Value: 55ns access enables direct capture from 16-bit ADCs; 2.0V retention preserves logs during battery swap. |
| Point-of-Sale Terminal Settings | Telecom Line Card Configuration |
Use Scenario: Preserving tax rates, pricing tables, and user preferences in retail terminals during nightly power cycling. IC Role / Device Role / Timing Role: Fast-access, battery-backed RAM serving as persistent parameter store for embedded ARM9 host. Use Value: Eliminates EEPROM wear-out concerns; 5V TTL compatibility avoids level-shifter BOM cost. |
Use Scenario: Holding channel calibration coefficients and provisioning data in DSLAM line cards with hot-swap capability. IC Role / Device Role / Timing Role: Standby-optimized SRAM retaining firmware-critical values during card insertion/removal transients. Use Value: 10μA max ISB1 at +85°C ensures thermal stability in dense telecom chassis without forced cooling. |
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 |
|---|---|---|---|
| CY62148EV30LL-55ZAXI | 4Mb (512k×8), 55ns, 3.3V supply, 44-pin TSOP | Requires 3.3V rail and level translation for 5V systems; higher pin count | Select only if migrating to 3.3V architecture and redesigning power delivery |
| IS61LV5128AL-10TLI | 4Mb (512k×8), 10ns access, 3.3V supply, 44-pin TSOP | Higher speed but incompatible voltage; no 2.0V data retention spec | Use only where sub-10ns timing is mandatory and battery backup is not required |
Compared with CY62148EV30LL-55ZAXI and IS61LV5128AL-10TLI, the R1LP0408DSB-5SR#S0 uniquely combines 5V operation, 55ns timing, and guaranteed 2.0V data retention-making it the only drop-in solution for legacy 5V industrial backup SRAM upgrades without voltage or footprint changes.
Availability
R1LP0408DSB-5SR#S0 is available at Aetrix Electronics and suitable for industrial PLC data buffering, medical event logging, point-of-sale terminal settings retention, telecom line card configuration, and battery-backed instrumentation requiring stable component supply over extended production lifecycles.
Supply support for R1LP0408DSB-5SR#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 R1LP0408D Series was developed to deliver high-density, low-power static RAM for battery-critical applications where data integrity must persist through extended power loss-targeting industrial control, medical, and communications equipment.
FAQ
What is the maximum operating temperature range for the R1LP0408DSB-5SR#S0?
The R1LP0408DSB-5SR#S0 is rated for 0°C to +70°C operation, as indicated by the "R" suffix in its part number. This commercial-grade temperature range is validated per the DC and AC characteristics tables in Rev.2.00 of the R10DS0104EJ0200 datasheet, with all timing parameters guaranteed across this span.
Does the R1LP0408DSB-5SR#S0 support true 5V TTL compatibility on all pins?
Yes, the R1LP0408DSB-5SR#S0 guarantees full TTL compatibility: VIH = 2.2V min and VIL = 0.8V max for all inputs, and VOH ≥ 2.4V (IOH = –1mA) and VOL ≤ 0.4V (IOL = 2.1mA) for outputs. These values are specified in the DC Characteristics table on page 5 of the R10DS0104EJ0200 datasheet.
Can the R1LP0408DSB-5SR#S0 retain data at 2.5V VCC?
Yes-the R1LP0408DSB-5SR#S0 guarantees data retention down to VDR = 2.0V, and its ICCDR (data retention current) is characterized at 3.0V and 2.2V in the Low Vcc Data Retention Characteristics table (page 11). At 2.5V, it remains well within the functional retention window with sub-μA current draw.
What is the pin pitch and package outline for the R1LP0408DSB-5SR#S0?
The R1LP0408DSB-5SR#S0 uses a 400-mil 32-pin TSOP(II) package conforming to JEDEC MO-153, with 0.5mm lead pitch and mechanical dimensions documented as PTBS0032DC-A (032PTY-A) in the Part Name Information table on page 1 of R10DS0104EJ0200.
Is the R1LP0408DSB-5SR#S0 RoHS compliant?
Yes-the R1LP0408DSB-5SR#S0 complies with the EU RoHS Directive, as confirmed in the Environmental Notice (page 11) of R10DS0104EJ0200, which states: "Please use Renesas Electronics products in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive."
R1LP0408DSB-5SR#S0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-SOIC (0.400", 10.16mm 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:
- 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-TSOP II
R1LP0408DSB-5SR#S0 FAQ
1.How can I place an order for R1LP0408DSB-5SR#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0408DSB-5SR#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 R1LP0408DSB-5SR#S0 reliable?
The price and inventory of R1LP0408DSB-5SR#S0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LP0408DSB-5SR#S0 is usually 5 days.
3.What payment methods are accepted for R1LP0408DSB-5SR#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0408DSB-5SR#S0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0408DSB-5SR#S0?
R1LP0408DSB-5SR#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0408DSB-5SR#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 R1LP0408DSB-5SR#S0?
For technical support, including R1LP0408DSB-5SR#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0408DSB-5SR#S0 requirements.
6.How does Aetrix verify that R1LP0408DSB-5SR#S0 is sourced from the original manufacturer or authorized distributors?
All R1LP0408DSB-5SR#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 R1LP0408DSB-5SR#S0 meets industry standards.
7.What is the process for return or replacement of R1LP0408DSB-5SR#S0?
All R1LP0408DSB-5SR#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0408DSB-5SR#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 R1LP0408DSB-5SR#S0 part is unused and in its original packaging.
Return procedure for R1LP0408DSB-5SR#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LP0408DSB-5SR#S0 Tags
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