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Renesas R1LP0408CSB-7LC#S0
- Part No.:
- R1LP0408CSB-7LC#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-SOIC (0.400", 10.16mm Width)
- Datasheet:
-
R1LP0408CSB-7LC#S0.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 32TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:6,447
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Product details
Overview
R1LP0408CSB-7LC#S0 from Renesas Technology 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.
For engineers reviewing the R1LP0408CSB-7LC#S0 datasheet, R1LP0408CSB-7LC#S0 pinout, R1LP0408CSB-7LC#S0 application, or R1LP0408CSB-7LC#S0 equivalent, key selection criteria include TSOP II packaging, 32-pin address/data multiplexing compatibility, low-standby-current operation in battery-backed systems, and guaranteed 70 ns timing across −20°C to +70°C.
Technical Context
This SRAM implements a fully static 6-transistor memory cell architecture with no clocks, refresh, or timing strobes required. Its control logic supports independent chip select (CS#), output enable (OE#), and write enable (WE#) signals, enabling seamless integration into microprocessor and microcontroller bus interfaces.
The device uses common I/O pins for bidirectional data transfer with three-state output drivers, and its address decoding covers A0–A18 (19-bit addressing). Standby current drops to ≤0.8 µA at +25°C when CS# is high, supporting long-term data retention in power-constrained embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 4 Mbit (512 kwords × 8 bits) - supports 64 KB byte-addressable storage without external banking logic |
| Access time | 70 ns max - ensures compatibility with 14 MHz system buses using standard wait-state insertion |
| Supply voltage | 5 V ±10% - directly interfaces with legacy 5 V TTL and CMOS logic families without level shifting |
| Standby current | 0.8 µA typ at +25°C - enables >1-year battery life in coin-cell–backed real-time clock or configuration memory applications |
| Operating temperature | −20°C to +70°C - qualified for industrial-grade embedded control and instrumentation environments |
| Data retention voltage | 2 V min - maintains stored data during brown-out or backup power transitions without external regulators |
| Package | 400-mil 32-pin TSOP II (32P3Y-H) - surface-mount compatible with standard reflow profiles and space-constrained PCB layouts |
Pinout & Package
Package: 400-mil 32-pin plastic TSOP II (32P3Y-H), thin-profile surface-mount package with gull-wing leads, 0.5 mm lead pitch, and JEDEC-standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address input | 19-bit unidirectional address bus; selects one of 524,288 8-bit words; no internal latching |
| I/O0–I/O7 | Bidirectional data I/O | Three-state CMOS drivers; shares pins for read data output and write data input; TTL-compatible voltage levels |
| CS# | Chip select | Active-low enable controlling entire memory array; places outputs in high-Z when deasserted |
| OE# | Output enable | Active-low control for data output drivers only; allows read operations while CS# remains asserted |
| WE# | Write enable | Active-low signal initiating write cycle; sampled synchronously with CS# to define write window boundaries |
| VCC | Power supply | +5 V supply pin; decoupling capacitor placement within 5 mm recommended per datasheet layout guidelines |
| VSS | Ground | Reference ground for all inputs, outputs, and internal circuitry; requires low-inductance connection to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Fully static operation | No clocks, no refresh cycles, no timing strobes - simplifies timing design and eliminates dynamic power spikes |
| Low standby power | 0.8 µA typical at +25°C - enables direct integration into battery-backed nonvolatile memory subsystems |
| TTL-compatible interface | All inputs meet VIH ≥ 2.2 V and VIL ≤ 0.8 V; outputs drive ±1 mA loads - eliminates level translators in 5 V systems |
| Common I/O architecture | Single 8-bit bidirectional bus reduces PCB trace count and simplifies routing versus separate DQ/DIN/DOUT schemes |
| Industrial temperature range | −20°C to +70°C operation - validated for use in programmable logic controllers, industrial HMIs, and test equipment |
Applications
| Industrial Data Logging | Embedded Controller Configuration Memory |
|---|---|
Use Scenario: Continuous acquisition of sensor readings in remote environmental monitoring nodes powered by lithium batteries. IC Role / Device Role / Timing Role: Nonvolatile buffer storing timestamped measurements between periodic wireless uploads; retains data during sleep cycles. Use Value: 0.8 µA standby current extends battery life beyond 18 months; 2 V data retention allows operation through deep brown-out events. |
Use Scenario: Storing runtime-calibrated parameters and user preferences in HVAC control panels with frequent power cycling. IC Role / Device Role / Timing Role: Fast-access configuration store mapped directly to microcontroller address space; accessed during boot and runtime updates. Use Value: 70 ns access time supports zero-wait-state operation on 14 MHz MCUs; TSOP II package fits compact front-panel PCBs. |
| Medical Instrumentation Buffer | Legacy Industrial Bus Interface |
Use Scenario: Temporary waveform capture in portable ECG devices where power efficiency and reliability are critical. IC Role / Device Role / Timing Role: High-speed circular buffer holding raw analog-to-digital samples prior to compression and transmission. Use Value: TTL-compatible I/Os interface directly with 5 V ADCs and microcontrollers; no additional bus buffers required. |
Use Scenario: Memory expansion for aging PLC CPU modules using ISA or VMEbus derivatives with 5 V signaling. IC Role / Device Role / Timing Role: Drop-in replacement for obsolete 512K×8 SRAMs in field-upgradeable firmware slots. Use Value: Pinout matches industry-standard 32-pin TSOP II footprint; identical control protocol avoids PCB redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV5128AL-70TQLI | Same density, 70 ns speed, but 3.3 V supply only; LVCMOS I/O levels | Requires level-shifting or voltage translation in 5 V systems; not suitable for direct 5 V bus replacement | Select only if migrating to 3.3 V system architecture and redesigning power delivery |
| AS6C4008-70PCN | 5 V supply, 70 ns access, but 44-pin SOJ package; higher standby current (1 µA typ) | Not pin-compatible; requires PCB layout change; larger footprint limits use in space-constrained designs | Consider only when existing SOJ socket infrastructure exists and TSOP II rework is prohibitive |
Compared with IS61LV5128AL-70TQLI and AS6C4008-70PCN, R1LP0408CSB-7LC#S0 uniquely delivers 5 V TTL compatibility, ultra-low 0.8 µA standby current, and TSOP II packaging in a single solution-enabling drop-in upgrades and battery-backed operation without voltage translation or board modification.
Availability
R1LP0408CSB-7LC#S0 is available at Aetrix Electronics and suitable for industrial data logging, embedded controller configuration memory, medical instrumentation buffering, and legacy industrial bus interface applications requiring stable component supply and long-lifecycle support.
Supply support for R1LP0408CSB-7LC#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 Technology Corp. (now part of Renesas Electronics Corporation) is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and memory solutions for industrial, automotive, and consumer markets.
The R1LP0408C-C Series was designed specifically for low-power, battery-backed SRAM applications in industrial control and instrumentation-emphasizing reliability, wide temperature operation, and direct 5 V system integration.
FAQ
What is the maximum access time specification for R1LP0408CSB-7LC#S0?
The R1LP0408CSB-7LC#S0 has a maximum access time of 70 ns over the full operating temperature range (−20°C to +70°C) and supply voltage (5 V ±10%). This value is measured as address access time (tAA) and chip select access time (tCO), ensuring deterministic timing for synchronous bus interfacing without added wait states in 14 MHz systems.
Does R1LP0408CSB-7LC#S0 support true static operation without clocks or refresh cycles?
Yes, R1LP0408CSB-7LC#S0 is a fully static RAM using a 6-transistor memory cell. It requires no clocks, no external refresh signals, and no timing strobes-only valid address and control signals (CS#, OE#, WE#) to initiate read or write operations. This eliminates dynamic power consumption and timing complexity in embedded designs.
What is the minimum supply voltage at which R1LP0408CSB-7LC#S0 retains stored data?
R1LP0408CSB-7LC#S0 guarantees data retention down to 2 V when CS# is held high (≥ VCC − 0.2 V) and all other inputs are at valid logic levels. At 3.0 V supply, typical data retention current is 0.8 µA at +25°C, enabling reliable operation during brown-out conditions in battery-backed systems.
Is R1LP0408CSB-7LC#S0 pin-compatible with other 32-pin TSOP II SRAMs?
R1LP0408CSB-7LC#S0 uses the standard 400-mil 32-pin TSOP II (32P3Y-H) footprint with defined pin assignments for A0–A18, I/O0–I/O7, CS#, OE#, WE#, VCC, and VSS. While mechanical footprint matches JEDEC TSOP II, functional pinout alignment must be verified against each candidate part-R1LP0408CSB-7LC#S0 is not guaranteed pin-compatible with non-Renesas SRAMs without electrical and timing validation.
What is the typical standby current of R1LP0408CSB-7LC#S0 at +25°C?
The typical standby current of R1LP0408CSB-7LC#S0 is 0.8 µA at +25°C when CS# is high and VCC = 5.0 V. This ultra-low quiescent draw is confirmed in the datasheet's DC Characteristics table under "ISB1" for the −7LC speed grade, making it suitable for multi-year battery operation in always-on embedded systems.
R1LP0408CSB-7LC#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:
- 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#S0 FAQ
1.How can I place an order for R1LP0408CSB-7LC#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0408CSB-7LC#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 R1LP0408CSB-7LC#S0 reliable?
The price and inventory of R1LP0408CSB-7LC#S0 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#S0 is usually 5 days.
3.What payment methods are accepted for R1LP0408CSB-7LC#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0408CSB-7LC#S0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0408CSB-7LC#S0?
R1LP0408CSB-7LC#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0408CSB-7LC#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 R1LP0408CSB-7LC#S0?
For technical support, including R1LP0408CSB-7LC#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0408CSB-7LC#S0 requirements.
6.How does Aetrix verify that R1LP0408CSB-7LC#S0 is sourced from the original manufacturer or authorized distributors?
All R1LP0408CSB-7LC#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 R1LP0408CSB-7LC#S0 meets industry standards.
7.What is the process for return or replacement of R1LP0408CSB-7LC#S0?
All R1LP0408CSB-7LC#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0408CSB-7LC#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 R1LP0408CSB-7LC#S0 part is unused and in its original packaging.
Return procedure for R1LP0408CSB-7LC#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LP0408CSB-7LC#S0 Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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