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Renesas R1LP0108ESN-5SI#S1
- Part No.:
- R1LP0108ESN-5SI#S1
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-SOIC (0.450", 11.40mm Width)
- Datasheet:
-
R1LP0108ESN-5SI#S1.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,398
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Product details
Overview
R1LP0108ESN-5SI#S1 from Renesas Electronics is a 1Mb (131,072 × 8-bit) low-power static RAM with 55 ns access time, single 4.5–5.5 V supply, and -40°C to +85°C industrial temperature range. Packaged in 32-pin SOP, it features TTL-compatible I/O, no refresh requirement, and 0.6 µA typical standby current-ideal for battery-backed memory in portable instrumentation and industrial controllers.
For engineers reviewing the R1LP0108ESN-5SI#S1 datasheet, R1LP0108ESN-5SI#S1 pinout, R1LP0108ESN-5SI#S1 application, or R1LP0108ESN-5SI#S1 equivalent, key selection criteria include industrial-grade temperature support, low-voltage data retention down to 2.0 V, three-state output capability for bus sharing, and dual chip select (CS1#, CS2) for seamless memory expansion.
Technical Context
This LPSRAM implements a fully static 128k-word × 8-bit memory array using Renesas's 0.15 µm CMOS/TFT process. It operates without clocks or refresh cycles, relying on asynchronous control via CS1#, CS2, WE#, and OE# signals to manage read/write and output enable states.
The device supports OR-tie bus architecture through three-state outputs and uses dual chip select logic: CS1# active-low and CS2 active-high allow hierarchical memory mapping. Standby mode is entered when CS2 is low or both CS2 high and CS1# high, enabling ultra-low 0.6 µA typical current at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 131,072 × 8-bit (1 Mb); supports byte-wide data interface without external multiplexing |
| Access time | 55 ns max; ensures compatibility with 12–15 MHz bus systems using standard TTL timing margins |
| Supply voltage | 4.5–5.5 V; operates reliably across unregulated 5 V rails and brown-out conditions |
| Standby current | 0.6 µA typical at 5.0 V/25°C; enables multi-year battery backup in non-volatile SRAM applications |
| Data retention VCC | 2.0 V min; retains memory contents during deep sleep or power-fail scenarios |
| Operating temperature | -40°C to +85°C; qualified for industrial environments including factory automation and outdoor telemetry |
| I/O compatibility | TTL input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.2 V); interfaces directly with legacy microcontrollers and FPGAs |
Pinout & Package
Package: 32-pin SOP (525-mil width), JEDEC MS-012AC compliant, lead-free per RoHS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address inputs | 17-bit address bus supporting full 131,072-word decoding; A16 is MSB |
| DQ0–DQ7 | Bi-directional data I/O | Common data bus with three-state control; enables shared bus topology via OE# and CS logic |
| CS1#, CS2 | Chip select inputs | CS1# active-low + CS2 active-high enable hierarchical memory banking and expansion |
| WE# | Write enable | Active-low signal initiating write cycle; synchronized with address and data setup/hold timing |
| OE# | Output enable | Active-low control of output drivers; prevents bus contention during multi-device reads |
| Vcc, Vss | Power and ground | Single 5 V supply; decoupling required per JEDEC SOP layout guidelines |
| NC | No connect | Pin 1 (NC) is internally unconnected; must remain floating or grounded-not driven |
Key Features
| Feature | Design Value |
|---|---|
| No refresh required | Eliminates external refresh circuitry and timing overhead-reduces BOM count and firmware complexity |
| Low standby current (0.6 µA) | Extends battery life in always-on backup memory applications beyond 5 years at room temperature |
| TTL-compatible I/O | Direct interfacing with legacy 5 V microcontrollers (e.g., 8051, PIC18F) without level-shifting |
| Dual chip select (CS1#, CS2) | Enables modular memory expansion up to 4 MB using simple address decode logic |
| OR-tie capable outputs | Supports wired-OR bus architectures for fault-tolerant or multi-master systems |
Applications
| Industrial PLC Data Buffer | Portable Medical Device Memory |
|---|---|
Use Scenario: Real-time logging of sensor readings and control state in programmable logic controllers deployed in factory environments. IC Role / Device Role / Timing Role: Non-refreshing SRAM buffer storing volatile runtime data between CPU and I/O modules with deterministic 55 ns read latency. Use Value: Ensures uninterrupted operation during brief AC line dips, leveraging 2.0 V data retention and -40°C to +85°C thermal stability. | Use Scenario: Battery-backed parameter storage and waveform buffering in handheld ECG monitors and infusion pumps. IC Role / Device Role / Timing Role: Low-power memory holding calibration coefficients and last-session diagnostics during device sleep or battery swap. Use Value: 0.6 µA standby current extends primary battery life while maintaining data integrity across power cycles. |
| Automated Test Equipment FIFO | Legacy Industrial HMI Cache |
Use Scenario: High-speed acquisition buffer in benchtop oscilloscopes and signal analyzers capturing transient events. IC Role / Device Role / Timing Role: Asynchronous FIFO stage interfacing ADCs to FPGA-based processing engines using common DQ bus and OE#/WE# handshaking. Use Value: 55 ns access time and three-state outputs prevent bus contention during concurrent read/write operations. | Use Scenario: Display cache and configuration storage in panel-mounted HMIs running on aging 8/16-bit controllers. IC Role / Device Role / Timing Role: Pin-compatible drop-in replacement for obsolete 5 V SRAMs in legacy designs requiring zero PCB rework. Use Value: TTL-compatible signaling and identical 32-pin SOP footprint ensure direct substitution without timing or layout changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV102416L-10TLI | 1 Mbit × 16-bit organization, 10 ns access, 3.3 V only, 44-pin TSOP | Higher bandwidth but incompatible data width and voltage; requires PCB redesign | Select only if migrating to 16-bit bus and 3.3 V system architecture |
| AS6C1008-55PCN | 1 Mbit × 8-bit, 55 ns, 5 V, -40°C to +85°C, 32-pin SOP-but 1.5 mA standby current | Near-pin-compatible but consumes >2,500× more standby power than R1LP0108ESN-5SI#S1 | Acceptable only where ultra-low power is not critical and existing stock is available |
Compared with IS61LV102416L-10TLI and AS6C1008-55PCN, the R1LP0108ESN-5SI#S1 uniquely balances industrial temperature range, 55 ns speed, 5 V operation, and sub-µA standby-making it the sole option for battery-backed 8-bit systems needing long-term data retention without layout change.
Availability
R1LP0108ESN-5SI#S1 is available at Aetrix Electronics and suitable for industrial automation, portable medical instrumentation, and test equipment requiring stable component supply across extended product lifecycles.
Supply support for R1LP0108ESN-5SI#S1 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and infrastructure markets.
The R1LP0108E Series was designed as an advanced low-power SRAM family targeting battery-operated and battery-backup memory applications where simplicity, reliability, and extended data retention are critical.
FAQ
What is the maximum operating frequency supported by R1LP0108ESN-5SI#S1?
R1LP0108ESN-5SI#S1 does not use a clock signal and is an asynchronous SRAM. Its performance is defined by access time (55 ns max) and cycle time (55 ns), supporting effective bus rates up to ~12 MHz in systems with zero wait-state timing. The device relies on external address and control signal timing rather than internal clocking.
Does R1LP0108ESN-5SI#S1 support data retention during complete power loss?
No-R1LP0108ESN-5SI#S1 requires minimum VCC ≥ 2.0 V to retain data. It supports low-voltage retention in battery-backup configurations but is not non-volatile. For true power-loss immunity, external backup capacitors or supercapacitors must maintain VCC above 2.0 V during outage intervals.
Can R1LP0108ESN-5SI#S1 be used with a 3.3 V microcontroller interface?
R1LP0108ESN-5SI#S1 is specified for 4.5–5.5 V operation only. Its TTL-compatible inputs accept 3.3 V logic highs (≥2.2 V), but VCC must remain at 5 V. Direct connection to 3.3 V I/O requires level translation for outputs to avoid overvoltage on the controller side.
What is the function of the NC pin on R1LP0108ESN-5SI#S1?
Pin 1 of R1LP0108ESN-5SI#S1 is marked NC (No Connect) and is internally unconnected. It must be left floating or tied to ground-never driven high or used as a signal path. This pin has no electrical function and serves only mechanical alignment in the 32-pin SOP package.
How does R1LP0108ESN-5SI#S1 handle bus contention during multi-device reads?
R1LP0108ESN-5SI#S1 prevents bus contention using active-low OE# (output enable) and three-state outputs. When OE# is high, all DQ pins enter high-impedance state regardless of CS or WE# status-allowing safe sharing of the data bus among multiple devices under centralized control.
R1LP0108ESN-5SI#S1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-SOIC (0.450", 11.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOP
R1LP0108ESN-5SI#S1 FAQ
1.How can I place an order for R1LP0108ESN-5SI#S1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0108ESN-5SI#S1 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 R1LP0108ESN-5SI#S1 reliable?
The price and inventory of R1LP0108ESN-5SI#S1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LP0108ESN-5SI#S1 is usually 5 days.
3.What payment methods are accepted for R1LP0108ESN-5SI#S1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0108ESN-5SI#S1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0108ESN-5SI#S1?
R1LP0108ESN-5SI#S1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0108ESN-5SI#S1 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 R1LP0108ESN-5SI#S1?
For technical support, including R1LP0108ESN-5SI#S1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0108ESN-5SI#S1 requirements.
6.How does Aetrix verify that R1LP0108ESN-5SI#S1 is sourced from the original manufacturer or authorized distributors?
All R1LP0108ESN-5SI#S1 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 R1LP0108ESN-5SI#S1 meets industry standards.
7.What is the process for return or replacement of R1LP0108ESN-5SI#S1?
All R1LP0108ESN-5SI#S1 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0108ESN-5SI#S1, 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 R1LP0108ESN-5SI#S1 part is unused and in its original packaging.
Return procedure for R1LP0108ESN-5SI#S1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LP0108ESN-5SI#S1 Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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