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Renesas R1LP0408CSP-7UI#B0
- Part No.:
- R1LP0408CSP-7UI#B0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- -
- Datasheet:
-
R1LP0408CSP-7UI#B0.pdf
- Description:
- STANDARD SRAM, 512KX8, 70NS
- Quantity:
- Payment:
- Shipping:
Inventory:4,711
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Product details
Overview
R1LP0408CSP-7UI#B0 from Renesas Electronics is a 4-Mbit (512-kword × 8-bit) CMOS static RAM with 70 ns maximum access time, 5 V ±10% single-supply operation, and −40 to +85°C industrial temperature range. It features 4 µW typical standby current, TTL-compatible I/O, and three-state outputs - optimized for battery-backed memory in embedded controllers and industrial data loggers.
For engineers reviewing the R1LP0408CSP-7UI#B0 datasheet, R1LP0408CSP-7UI#B0 pinout, R1LP0408CSP-7UI#B0 application, or R1LP0408CSP-7UI#B0 equivalent, this device serves as a low-power, wide-temperature SRAM for legacy 5 V systems requiring reliable non-refreshed storage with direct microcontroller bus interfacing and minimal power budget impact.
Technical Context
The R1LP0408CSP-7UI#B0 implements a fully static 6-transistor memory cell architecture on a 0.25 µm CMOS process, eliminating clock or timing strobe requirements. Its address decoding supports 19-bit addressing (A0–A18), enabling full 512-kword coverage without external logic.
It uses asynchronous control with active-low chip select (CS#), output enable (OE#), and write enable (WE#), supporting equal read/write cycle times (tRC = tWC = 70 ns max) and common I/O bus operation with high-impedance tri-state control during deselect or disable states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 4 Mbit (512 kwords × 8 bits) - supports 64 KB byte-addressable space for microcontroller firmware/data buffers |
| Access time | 70 ns max - compatible with 14 MHz bus timing without wait states in standard 5 V microcontroller interfaces |
| Supply voltage | 5 V ±10% (4.5–5.5 V) - matches legacy TTL/CMOS logic rails without regulation overhead |
| Standby current | 4 µW typical (≈0.8 µA at 5 V) - enables multi-year battery backup in off-grid sensor nodes |
| Operating temperature | −40°C to +85°C - qualified for industrial automation, transportation, and outdoor equipment deployments |
| I/O interface | TTL-compatible inputs/outputs - direct connection to 5 V MCUs (e.g., 8051, PIC18F, legacy ARM7) without level shifters |
| Data retention voltage | 2.0 V min - retains stored data during brown-out or battery-switchover down to ultra-low VCC |
Pinout & Package
Package: 32-pin plastic SOP (32P2M-A, 525-mil width). Lead-free and RoHS-compliant per Renesas documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address input | 19-bit unidirectional address bus; A0 = LSB, A18 = MSB - fully decodes 512-kword space |
| I/O0–I/O7 | Data input/output | Bi-directional 8-bit data bus with three-state control - shares pins for read and write, reducing PCB trace count |
| CS# | Chip select | Active-low enable; places device in active or standby mode - primary chip-level gating for multi-SRAM systems |
| OE# | Output enable | Active-low control of output drivers only - allows read data to be gated independently of CS# for bus sharing |
| WE# | Write enable | Active-low write strobe - initiates write cycle when CS# and WE# both low; defines data capture window |
| VCC | Power supply | +5 V supply pin - must be decoupled locally (0.1 µF ceramic + 10 µF tantalum) per Renesas layout guidelines |
| VSS | Ground | Signal and power ground reference - requires low-impedance connection to system GND plane |
Key Features
| Feature | Design Value |
|---|---|
| Fully static operation | No clocks, no refresh cycles required - simplifies timing design and eliminates hidden power spikes or latency jitter |
| Low standby power | 4 µW typical (0.8 µA @ 5 V) - enables >5-year coin-cell backup in always-on monitoring applications |
| Wide temperature range | −40°C to +85°C operation - meets industrial grade requirements without derating or thermal management |
| Direct TTL compatibility | All inputs accept 0.8 V / 2.2 V thresholds; outputs drive 2.1 mA low / −1.0 mA high - interoperable with legacy 5 V logic families |
| Battery backup support | Retains data down to 2.0 V VCC with <10 µA retention current - supports seamless switchover between main and backup power |
Applications
| Industrial Data Logger | Legacy PLC Memory Module |
|---|---|
|
Use Scenario: Standalone environmental sensor node recording temperature, humidity, and pressure every 10 seconds into non-volatile buffer before periodic wireless upload. IC Role / Device Role / Timing Role: Primary working memory for real-time data aggregation and timestamped packet assembly prior to transmission. Use Value: 4 µW standby current extends CR2032 battery life beyond 6 years; 70 ns access enables fast burst writes during sampling windows. |
Use Scenario: Retrofit memory expansion for aging programmable logic controller CPU modules using 5 V parallel buses and no FPGA rework. IC Role / Device Role / Timing Role: Drop-in replacement for obsolete 512-kword × 8-bit SRAMs in ladder-logic execution buffers and I/O image tables. Use Value: Pinout-identical to industry-standard 32-pin SOP footprint; TTL compatibility avoids signal integrity redesign or level-shifter insertion. |
| Medical Diagnostic Handheld | Automotive Telematics Black Box |
|
Use Scenario: Portable ECG analyzer storing 30 seconds of raw waveform data at 1 kHz sampling before local analysis or Bluetooth transfer. IC Role / Device Role / Timing Role: High-reliability scratchpad memory holding digitized analog front-end samples prior to DSP processing. Use Value: −40°C to +85°C rating ensures operation in uncontrolled clinical environments; soft-error immunity prevents data corruption during transport. |
Use Scenario: Crash-data recorder capturing CAN bus messages, GPS coordinates, and accelerometer readings during vehicle impact events. IC Role / Device Role / Timing Role: Buffered write cache that survives ignition cutoff via capacitor hold-up, preserving last 5 seconds of pre-crash telemetry. Use Value: 2.0 V data retention threshold allows safe capture even during rapid VCC collapse; 70 ns write cycle captures high-speed CAN FD bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV25616AL-10TLI | 3 V core (2.7–3.6 V), 10 ns access, x16 bus width, 44-pin TSOP | Requires voltage translation and bus-width adaptation; unsuitable for direct 5 V systems | Select only if migrating to 3 V architecture with higher speed and wider data path needs |
| CY62148EV30LL-70ZSXI | 5 V supply, 70 ns access, same 32-pin SOP package, but 512-kword × 8-bit organization and −40°C to +85°C rating | Pin-to-pin compatible with identical timing and DC specs; Cypress-qualified for extended temp | Valid drop-in alternative where Renesas supply continuity is constrained; verify JEDEC-compliant marking and lot traceability |
Compared with IS61LV25616AL-10TLI and CY62148EV30LL-70ZSXI, the R1LP0408CSP-7UI#B0 offers native 5 V operation and proven long-term industrial reliability, while the Cypress part provides immediate pin-compatible sourcing, and the ISSI part necessitates board-level redesign for voltage and bus interface.
Availability
R1LP0408CSP-7UI#B0 is available at Aetrix Electronics and suitable for industrial data loggers, legacy PLC upgrades, medical handheld diagnostics, and automotive black box recorders requiring stable component supply across extended product lifecycles.
Supply support for R1LP0408CSP-7UI#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, SoCs, analog, power, and memory solutions, with integrated R&D and manufacturing spanning 20 countries.
The R1LP0408CSP-7UI#B0 belongs to Renesas' Low Power SRAM product line, engineered for industrial and automotive applications demanding extended temperature operation, ultra-low standby power, and long-term supply stability in 5 V systems.
FAQ
What is the maximum operating frequency supported by the R1LP0408CSP-7UI#B0?
The R1LP0408CSP-7UI#B0 does not operate at a clock frequency - it is an asynchronous static RAM. Its 70 ns maximum access time corresponds to a theoretical upper limit of ~14.3 MHz for consecutive random accesses, but actual bus throughput depends on controller timing margins and cycle overlap. The R1LP0408CSP-7UI#B0 requires no clock signal and functions with purely level-sensitive control inputs (CS#, OE#, WE#).
Is the R1LP0408CSP-7UI#B0 pin-compatible with other 32-pin SOP SRAMs like the HM62256 or AS6C0408?
The R1LP0408CSP-7UI#B0 shares the industry-standard 32-pin SOP pinout for 512-kword × 8-bit SRAMs (e.g., A0–A18, I/O0–I/O7, CS#, OE#, WE#, VCC, VSS), matching HM62256 and AS6C0408. However, timing parameters differ: HM62256 specifies 100 ns access, while AS6C0408 offers 55/70 ns variants. Always verify AC timing compliance in your specific controller interface before substitution.
Does the R1LP0408CSP-7UI#B0 support battery backup mode, and what voltage range maintains data retention?
Yes, the R1LP0408CSP-7UI#B0 supports battery backup operation. Data retention is guaranteed down to VCC = 2.0 V when CS# is held high (≥ VCC − 0.2 V), with retention current ≤10 µA at +85°C. This allows integration with supercapacitors or lithium coin cells to preserve memory contents during main power loss without external supervision circuitry.
What is the lead finish and RoHS status of the R1LP0408CSP-7UI#B0?
The R1LP0408CSP-7UI#B0 uses a lead-free matte tin (Sn) finish on its 32-pin SOP package and complies with EU RoHS Directive 2011/65/EU and related amendments. Renesas confirms this part is halogen-free and meets IPC/JEDEC J-STD-609A Class 1 marking requirements for lead-free identification.
Can the R1LP0408CSP-7UI#B0 be used in automotive applications such as infotainment or ADAS subsystems?
The R1LP0408CSP-7UI#B0 is rated for −40°C to +85°C operation and classified as "Standard" quality grade per Renesas documentation, making it suitable for under-hood-adjacent or cabin-mounted automotive subsystems (e.g., telematics black boxes, gateway log buffers) but not for safety-critical ADAS or powertrain control. For AEC-Q100 qualified alternatives, consult Renesas' automotive memory portfolio.
R1LP0408CSP-7UI#B0 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:
- -
R1LP0408CSP-7UI#B0 FAQ
1.How can I place an order for R1LP0408CSP-7UI#B0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0408CSP-7UI#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 R1LP0408CSP-7UI#B0 reliable?
The price and inventory of R1LP0408CSP-7UI#B0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LP0408CSP-7UI#B0 is usually 5 days.
3.What payment methods are accepted for R1LP0408CSP-7UI#B0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0408CSP-7UI#B0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0408CSP-7UI#B0?
R1LP0408CSP-7UI#B0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0408CSP-7UI#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 R1LP0408CSP-7UI#B0?
For technical support, including R1LP0408CSP-7UI#B0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0408CSP-7UI#B0 requirements.
6.How does Aetrix verify that R1LP0408CSP-7UI#B0 is sourced from the original manufacturer or authorized distributors?
All R1LP0408CSP-7UI#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 R1LP0408CSP-7UI#B0 meets industry standards.
7.What is the process for return or replacement of R1LP0408CSP-7UI#B0?
All R1LP0408CSP-7UI#B0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0408CSP-7UI#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 R1LP0408CSP-7UI#B0 part is unused and in its original packaging.
Return procedure for R1LP0408CSP-7UI#B0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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