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Renesas R1LP0108ESN-7SR#S0
- Part No.:
- R1LP0108ESN-7SR#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-SOIC (0.450", 11.40mm Width)
- Datasheet:
-
R1LP0108ESN-7SR#S0.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,306
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Product details
Overview
R1LP0108ESN-7SR#S0 from Renesas Electronics is a 1Mb (128k × 8-bit) low-power static RAM IC operating from a single 4.5–5.5V supply, featuring 70 ns access time, 0.6 µA typical standby current at 5.0V, TTL-compatible I/O, and no refresh requirement - deployed in battery-backed memory subsystems for industrial controllers and portable instrumentation.
For engineers reviewing the R1LP0108ESN-7SR#S0 datasheet, R1LP0108ESN-7SR#S0 pinout, R1LP0108ESN-7SR#S0 application, or R1LP0108ESN-7SR#S0 equivalent, key selection criteria include its 32-pin SOP package, dual chip select architecture (CS1#, CS2), common data I/O with three-state outputs, and low-voltage data retention down to 2.0V.
Technical Context
The R1LP0108ESN-7SR#S0 implements a fully static 128k-word × 8-bit memory array using Renesas's 0.15 µm CMOS process, with separate address and data buffers, sense/write amplifiers, and TTL-level input/output circuitry. It supports asynchronous read/write cycles without clocks or refresh circuitry.
Its dual chip select (CS1#, CS2) enables hierarchical memory expansion, while OE# and WE# provide independent control of output enable and write strobe functions. Standby mode is entered when CS2 is low or both CS2 is high and CS1# is high, reducing current to ≤2 µA over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 1 Mb (131,072 × 8-bit) - supports byte-wide data bus interfacing without external width conversion. |
| Access time | 70 ns - defines maximum clock rate for reliable read cycles in 5V microcontroller systems. |
| Supply voltage | 4.5–5.5 V - compatible with standard 5V logic rails and tolerant of ±10% regulation variation. |
| Standby current | 0.6 µA typical at 25°C - enables multi-year battery backup in non-volatile SRAM applications. |
| I/O interface | TTL-compatible inputs/outputs - directly interfaces with legacy 5V microcontrollers and FPGAs without level shifters. |
| Data retention voltage | 2.0 V minimum - maintains stored data during brown-out or battery depletion down to 2V supply. |
| Operating temperature | 0 to +70°C - qualified for commercial-grade embedded systems including test equipment and HMI panels. |
Pinout & Package
Package: 32-pin plastic SOP (525-mil width), JEDEC MS-012AC compliant, surface-mountable with 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address inputs | 17-bit address bus supporting full 128k-word decoding; A16 is MSB for 131,072-word space. |
| DQ0–DQ7 | Bi-directional data I/O | Common 8-bit data bus with three-state output drivers; OR-tie capable for bus sharing. |
| CS1#, CS2 | Chip select inputs | Active-low CS1# and active-high CS2 enable hierarchical memory banking and expansion. |
| WE# | Write enable | Active-low signal controlling write cycle initiation; latches data on falling edge with tWP ≥ 50 ns. |
| OE# | Output enable | Active-low control for output buffer; prevents bus contention during read or idle states. |
| Vcc, Vss | Power and ground | Single 5V supply pair; decoupling required within 10 mm of pins per high-speed SRAM layout rules. |
| NC | No-connect | Pin 1 (NC) is internally unconnected; must remain floating or tied to ground per design guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| No refresh required | Eliminates external refresh controller or timer overhead - simplifies firmware and reduces BOM count. |
| Low standby current (0.6 µA) | Extends battery life in always-on backup memory applications beyond 10 years at room temperature. |
| Dual chip select (CS1#, CS2) | Enables seamless expansion to 2+ Mbit using multiple devices without address decoder logic. |
| Three-state outputs with OR-tie capability | Allows direct connection of multiple R1LP0108ESN-7SR#S0 devices to shared data bus without external bus transceivers. |
| TTL-compatible I/O | Interoperates with legacy 5V microcontrollers (e.g., 8051, PIC18F), CPLDs, and discrete logic without level translation. |
Applications
| Industrial PLC Data Buffer | Portable Medical Instrument Memory |
|---|---|
Use Scenario: Stores real-time sensor logs and configuration parameters in programmable logic controllers during power interruption. IC Role / Device Role / Timing Role: Non-volatile backup RAM holding critical state data during AC loss, powered by onboard coin cell. Use Value: Maintains 128k bytes of operational history with <2 µA retention current, enabling >5-year battery life. |
Use Scenario: Retains patient calibration settings and last-measurement snapshot in handheld blood glucose meters. IC Role / Device Role / Timing Role: Low-power SRAM preserving volatile setup data between device power cycles and battery swaps. Use Value: Supports data retention down to 2.0V supply, ensuring integrity during battery voltage sag below 3V. |
| Test Equipment Configuration Storage | Legacy Industrial HMI Cache |
Use Scenario: Holds instrument calibration coefficients and user-defined test sequences in benchtop multimeters and oscilloscopes. IC Role / Device Role / Timing Role: Fast-access memory mapped into microcontroller address space for rapid parameter recall. Use Value: 70 ns access time ensures sub-microsecond read latency for real-time configuration loading. |
Use Scenario: Caches display frame buffers and menu navigation state in factory-floor HMIs using 5V RS-485 controllers. IC Role / Device Role / Timing Role: Byte-wide SRAM interfaced directly to 8-bit microcontroller data bus with no glue logic. Use Value: TTL compatibility and 32-pin SOP footprint allow drop-in replacement of obsolete 28C256-style memories. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV1024-70TLI | 70 ns access, 3.3V supply only, 32-pin TSOP; lower standby current (1 µA) but incompatible voltage domain. | Requires full 3.3V system redesign; unsuitable for existing 5V designs using R1LP0108ESN-7SR#S0. | Select only if migrating to 3.3V architecture and board layout allows TSOP footprint. |
| AS6C1008-70SCN | 70 ns access, 5V supply, 32-pin SOP; higher standby current (5 µA typical) and no low-Vcc retention spec below 4.5V. | Lacks guaranteed 2.0V data retention - not viable for battery-backup scenarios requiring extended low-voltage hold. | Acceptable for main-memory use in 5V systems where backup operation is not required. |
Compared with IS61LV1024-70TLI and AS6C1008-70SCN, the R1LP0108ESN-7SR#S0 uniquely combines 5V operation, 0.6 µA standby, and 2.0V data retention - making it the sole option among these three for long-life battery-backed SRAM in commercial-temperature 5V systems.
Availability
R1LP0108ESN-7SR#S0 is available at Aetrix Electronics and suitable for industrial PLC data buffering, portable medical instrument memory, and test equipment configuration storage requiring stable component supply across multi-year production cycles.
Supply support for R1LP0108ESN-7SR#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 is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and infrastructure markets.
The R1LP0108E Series was designed specifically for low-power, battery-backed memory applications where simplicity, reliability, and long-term data retention outweigh density or speed requirements.
FAQ
What is the maximum operating frequency supported by R1LP0108ESN-7SR#S0?
The R1LP0108ESN-7SR#S0 is an asynchronous SRAM with no internal clock; its timing is governed by access and cycle times. With a 70 ns access time, it supports reliable read/write operations up to approximately 14 MHz in worst-case continuous cycling - though actual system throughput depends on controller timing margins and bus protocol overhead. The R1LP0108ESN-7SR#S0 does not specify a maximum clock frequency because it operates without a clock signal.
Does R1LP0108ESN-7SR#S0 support battery backup operation?
Yes, the R1LP0108ESN-7SR#S0 supports true battery backup operation via its low-voltage data retention capability: it maintains stored data down to Vcc = 2.0 V with standby current ≤10 µA at +70°C. This is enabled by asserting CS2 ≤ 0.2 V or holding CS1# ≥ Vcc − 0.2 V while Vcc drops - allowing seamless transition from main supply to backup battery without data loss. The R1LP0108ESN-7SR#S0 datasheet specifies tCDR = 0 ns for entry into retention mode.
What package type is used for R1LP0108ESN-7SR#S0?
The R1LP0108ESN-7SR#S0 uses a 32-pin plastic SOP (Small Outline Package) with 525-mil body width and 1.27 mm lead pitch, compliant with JEDEC MS-012AC. This surface-mount package is compatible with standard reflow soldering processes and fits legacy footprints used for 28-pin and 32-pin memory ICs. The "SN" suffix in the part number explicitly denotes the SOP package variant of the R1LP0108E Series.
Can R1LP0108ESN-7SR#S0 be used in place of older 28C256 EPROMs?
No - the R1LP0108ESN-7SR#S0 is a volatile static RAM, not a non-volatile EPROM. While it shares the same 32-pin DIP/SOP pinout and 128k × 8 organization as some 28C256 variants, it requires continuous power to retain data and lacks programming voltage (Vpp) pins or erase functionality. The R1LP0108ESN-7SR#S0 is suitable only as a drop-in replacement for other 5V SRAMs (e.g., 62256), not for EPROMs or Flash memory.
What is the function of the NC pin on R1LP0108ESN-7SR#S0?
Pin 1 of the R1LP0108ESN-7SR#S0 is marked NC (No Connect) and is internally unconnected. Per Renesas design guidance, this pin must be left floating or tied to ground - it must never be driven high or used as a signal line. Its presence accommodates pinout compatibility across the R1LP0108E family (including sTSOP/TSOP variants), but it serves no electrical function in the SOP-packaged R1LP0108ESN-7SR#S0.
R1LP0108ESN-7SR#S0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-SOIC (0.450", 11.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 70ns
- Access Time:
- 70 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOP
R1LP0108ESN-7SR#S0 FAQ
1.How can I place an order for R1LP0108ESN-7SR#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0108ESN-7SR#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 R1LP0108ESN-7SR#S0 reliable?
The price and inventory of R1LP0108ESN-7SR#S0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LP0108ESN-7SR#S0 is usually 5 days.
3.What payment methods are accepted for R1LP0108ESN-7SR#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0108ESN-7SR#S0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0108ESN-7SR#S0?
R1LP0108ESN-7SR#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0108ESN-7SR#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 R1LP0108ESN-7SR#S0?
For technical support, including R1LP0108ESN-7SR#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0108ESN-7SR#S0 requirements.
6.How does Aetrix verify that R1LP0108ESN-7SR#S0 is sourced from the original manufacturer or authorized distributors?
All R1LP0108ESN-7SR#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 R1LP0108ESN-7SR#S0 meets industry standards.
7.What is the process for return or replacement of R1LP0108ESN-7SR#S0?
All R1LP0108ESN-7SR#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0108ESN-7SR#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 R1LP0108ESN-7SR#S0 part is unused and in its original packaging.
Return procedure for R1LP0108ESN-7SR#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LP0108ESN-7SR#S0 Tags
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