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Renesas R1LP0408CSB-7LC#D0
- Part No.:
- R1LP0408CSB-7LC#D0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-SOIC (0.400", 10.16mm Width)
- Datasheet:
-
R1LP0408CSB-7LC#D0.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 32TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:710
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Product details
Overview
R1LP0408CSB-7LC#D0 from Renesas Electronics is a 4-Mbit CMOS static RAM organized as 512-kword × 8-bit, operating from a single 5 V ±10% supply, with 70 ns maximum access time and 4 µW typical standby current. It features TTL-compatible inputs/outputs, three-state bidirectional data I/Os, and battery backup capability for low-power retention down to 2 V. It is used in embedded controllers requiring non-volatile SRAM buffering with minimal power draw during sleep modes.
For engineers reviewing the R1LP0408CSB-7LC#D0 datasheet, R1LP0408CSB-7LC#D0 pinout, R1LP0408CSB-7LC#D0 application, or R1LP0408CSB-7LC#D0 equivalent, key selection criteria include 32-pin TSOP II package compatibility, 70 ns read/write timing compliance, low-standby-current operation in battery-backed systems, and direct TTL-level interface without level-shifting.
Technical Context
This SRAM uses a fully static 6-transistor memory cell architecture with no clocks or refresh required. Its timing is controlled solely by CS#, OE#, and WE# signals, supporting equal read and write cycle times (tRC = tWC = 70 ns max) and simultaneous address/data bus sharing via high-impedance tri-state outputs.
The device implements independent control of chip select (CS#), output enable (OE#), and write enable (WE#) to support flexible bus arbitration and interleaved read/write operations. Data retention is guaranteed at VCC ≥ 2.0 V with CS# asserted, drawing ≤0.8 µA typical current at +25°C in that mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 4 Mbit (512 kwords × 8 bits) - supports 64 KB byte-addressable buffer space |
| Access time | 70 ns max - defines minimum clock period for synchronous bus interfacing |
| Supply voltage | 5.0 V ±10% - compatible with standard TTL logic rails without regulation |
| Standby current | 0.8 µA typ at +25°C - enables multi-year battery backup in coin-cell powered systems |
| Operating temperature | −20°C to +70°C - qualified for industrial-grade embedded environments |
| Data retention voltage | 2.0 V min - maintains stored data during brown-out or backup battery operation |
| Output drive | VOL ≤ 0.4 V @ 2.1 mA - ensures robust low-level signaling into TTL loads |
Pinout & Package
Package: 32-pin TSOP II (400-mil), JEDEC MO-141AC compliant, 12.0 mm × 20.0 mm footprint, 1.2 mm height, gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address input | 19-bit address bus supporting full 512-kword decoding; A18 is MSB |
| I/O0–I/O7 | Bidirectional data I/O | Shared 8-bit data bus with three-state control; high-impedance when CS# or OE# inactive |
| CS# | Chip select (active low) | Primary enable for all internal operations; controls address/data buffers and retention mode entry |
| OE# | Output enable (active low) | Gates output drivers only; does not affect internal state or power consumption |
| WE# | Write enable (active low) | Controls write latch and memory cell write timing; sampled with CS# to initiate write cycle |
| VCC | Power supply | +5 V supply pin; decoupling capacitor placement critical for AC noise immunity |
| VSS | Ground | Signal and power return; must be low-inductance connection to minimize ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| Fully static operation | No clocks, no refresh cycles - simplifies timing design and eliminates hidden power spikes |
| Low standby power | 0.8 µA typical at +25°C - extends battery life in always-on backup applications |
| TTL-compatible I/O | VIH ≥ 2.2 V, VIL ≤ 0.8 V - interfaces directly with legacy microcontrollers and FPGAs without level shifters |
| Common I/O bus | Single 8-bit bidirectional data path - reduces PCB trace count and simplifies layout |
| Data retention at 2 V | Guaranteed memory hold at VCC ≥ 2.0 V with CS# high - supports seamless transition to backup power |
Applications
| Industrial PLC Data Buffer | Medical Device Event Log Storage |
|---|---|
Use Scenario: Storing real-time sensor readings and alarm timestamps during mains power loss. IC Role / Device Role / Timing Role: Non-volatile SRAM buffer holding critical event history until safe shutdown or recovery. Use Value: Retains 64 KB of timestamped diagnostics for >10 years on CR2032 coin cell due to 0.8 µA standby current. |
Use Scenario: Capturing ECG waveform snapshots during transient power dips in portable monitors. IC Role / Device Role / Timing Role: High-speed, low-latency memory for temporary waveform capture before flash storage. Use Value: 70 ns access enables sampling at ≥14 MHz without CPU wait states; 2 V retention prevents data loss during brown-outs. |
| Point-of-Sale Terminal Configuration Cache | Automotive Infotainment Boot Loader Scratchpad |
Use Scenario: Caching printer driver settings and tax tables to accelerate transaction startup after cold boot. IC Role / Device Role / Timing Role: Fast-access configuration RAM mapped into microcontroller's external memory space. Use Value: 5 V TTL compatibility eliminates level-shifter components; 32-pin TSOP II fits compact POS board layouts. |
Use Scenario: Holding decrypted firmware fragments during secure boot sequence in head unit ECUs. IC Role / Device Role / Timing Role: Secure, fast-access working memory for cryptographic operations prior to main RAM initialization. Use Value: −20°C to +70°C rating meets automotive cabin temperature requirements; no refresh avoids timing side-channel leakage. |
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, 3.3 V supply | Higher density per pin but requires 3.3 V rail and different bus width | Select if system uses 16-bit data path and 3.3 V core logic |
| AS6C4008-70PCN | 4 Mbit × 8-bit, 70 ns access, 5 V supply, 44-pin SOJ package | Larger footprint and incompatible pinout; higher standby current (5 µW) | Select only if TSOP II footprint is unavailable and board redesign is acceptable |
Compared with IS61LV25616AL-10TLI and AS6C4008-70PCN, the R1LP0408CSB-7LC#D0 offers optimal fit for 5 V, 8-bit bus, space-constrained industrial designs where ultra-low standby current and TSOP II compatibility are mandatory.
Availability
R1LP0408CSB-7LC#D0 is available at Aetrix Electronics and suitable for industrial PLC data buffering, medical event logging, and point-of-sale configuration caching requiring stable component supply across extended product lifecycles.
Supply support for R1LP0408CSB-7LC#D0 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 R1LP0408C-C Series was designed specifically for battery-backed, low-power embedded systems needing reliable, pin-compatible SRAM with extended data retention and industrial temperature operation.
FAQ
What is the maximum operating frequency supported by the R1LP0408CSB-7LC#D0?
The R1LP0408CSB-7LC#D0 does not operate on a clock signal - it is a fully static RAM. Its maximum effective throughput is determined by its 70 ns read/write cycle time, enabling up to ~14.3 MHz sustained random access when interfaced with appropriate bus timing. The R1LP0408CSB-7LC#D0 requires no clock circuitry, eliminating jitter and synchronization constraints inherent in dynamic memory.
Can the R1LP0408CSB-7LC#D0 retain data on a 3.0 V backup supply?
Yes - the R1LP0408CSB-7LC#D0 guarantees data retention at VCC ≥ 2.0 V when CS# is held high, and draws only 0.8 µA typical current at +25°C under those conditions. At 3.0 V, retention is robust and well within specification; the R1LP0408CSB-7LC#D0 has been validated for multi-year retention using standard lithium coin cells in industrial backup configurations.
Is the R1LP0408CSB-7LC#D0 pin-compatible with the R1LP0408CSP-7LC variant?
No - the R1LP0408CSB-7LC#D0 uses a 32-pin TSOP II package, while the R1LP0408CSP-7LC uses a 32-pin SOP (525-mil). Although both share identical pin functions and signal assignments, their physical dimensions, lead pitch, and mounting profiles differ. PCB layout must be redesigned to accommodate the TSOP II footprint of the R1LP0408CSB-7LC#D0.
Does the R1LP0408CSB-7LC#D0 require external pull-up resistors on control lines?
No - the R1LP0408CSB-7LC#D0 has TTL-compatible input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and sufficient noise margin to interface directly with standard microcontroller GPIOs. Pull-ups are unnecessary unless the host system uses open-drain drivers or long trace runs susceptible to noise; the R1LP0408CSB-7LC#D0 itself contains no internal pull-ups or pull-downs on CS#, OE#, or WE#.
What is the meaning of "#D0" suffix in R1LP0408CSB-7LC#D0?
The "#D0" suffix denotes tape-and-reel packaging per Renesas standard ordering nomenclature: D0 indicates 1,000-unit reel quantity in antistatic carrier tape. This is a packaging variant only - all electrical, timing, thermal, and functional specifications of the R1LP0408CSB-7LC#D0 match the base R1LP0408CSB-7LC part, including 70 ns access time, TSOP II package, and −20°C to +70°C operation.
R1LP0408CSB-7LC#D0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-SOIC (0.400", 10.16mm 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:
- 70ns
- Access Time:
- 70 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -20°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP II
R1LP0408CSB-7LC#D0 FAQ
1.How can I place an order for R1LP0408CSB-7LC#D0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0408CSB-7LC#D0 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 R1LP0408CSB-7LC#D0 reliable?
The price and inventory of R1LP0408CSB-7LC#D0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LP0408CSB-7LC#D0 is usually 5 days.
3.What payment methods are accepted for R1LP0408CSB-7LC#D0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0408CSB-7LC#D0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0408CSB-7LC#D0?
R1LP0408CSB-7LC#D0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0408CSB-7LC#D0 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 R1LP0408CSB-7LC#D0?
For technical support, including R1LP0408CSB-7LC#D0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0408CSB-7LC#D0 requirements.
6.How does Aetrix verify that R1LP0408CSB-7LC#D0 is sourced from the original manufacturer or authorized distributors?
All R1LP0408CSB-7LC#D0 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 R1LP0408CSB-7LC#D0 meets industry standards.
7.What is the process for return or replacement of R1LP0408CSB-7LC#D0?
All R1LP0408CSB-7LC#D0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0408CSB-7LC#D0, 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 R1LP0408CSB-7LC#D0 part is unused and in its original packaging.
Return procedure for R1LP0408CSB-7LC#D0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LP0408CSB-7LC#D0 Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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