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Renesas R1LP0108ESP-5SR#S0
- Part No.:
- R1LP0108ESP-5SR#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-SOIC (0.450", 11.40mm Width)
- Datasheet:
-
R1LP0108ESP-5SR#S0.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,067
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Product details
Overview
R1LP0108ESP-5SR#S0 from Renesas Electronics is a 1Mb (131,072 × 8-bit) low-power static RAM IC operating from a single 4.5–5.5V supply, featuring 55 ns access time, 0.6 µA typical standby current at 5.0V, and TTL-compatible I/O. It serves as non-volatile memory backup in battery-powered instrumentation and embedded control systems requiring zero-refresh operation and simple parallel bus interfacing.
For engineers reviewing the R1LP0108ESP-5SR#S0 datasheet, R1LP0108ESP-5SR#S0 pinout, R1LP0108ESP-5SR#S0 application, or R1LP0108ESP-5SR#S0 equivalent, key selection criteria include its 32-pin SOP package, dual chip select architecture (CS1#, CS2), common I/O bus with three-state outputs, and data retention down to 2.0V Vcc - critical for low-power hold-mode designs.
Technical Context
The R1LP0108ESP-5SR#S0 implements a fully static memory array with no internal clocks or refresh circuitry, relying on CMOS latch-based cells fabricated in 0.15 µm technology. Its address decoding supports 17-bit addressing (A0–A16) for full 128k-word coverage, with separate chip select inputs enabling seamless memory expansion without external logic.
Operation is controlled via active-low signals: CS1# and CS2 jointly enable the device, WE# governs write cycles, and OE# manages output tri-state behavior. The absence of clock timing constraints simplifies integration into microcontroller and FPGA parallel bus interfaces while maintaining deterministic read/write latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mb (131,072 words × 8 bits) - supports byte-wide data transfers without banking or multiplexing. |
| Access Time | 55 ns - guarantees sub-60 ns read latency under standard 5V/25°C conditions for real-time control buffering. |
| Supply Voltage | 4.5–5.5 V - compatible with legacy 5V logic families and tolerant of rail droop during battery discharge. |
| Standby Current | 0.6 µA typical at 5.0V - enables multi-year battery life in always-on backup memory applications. |
| Data Retention Vcc | 2.0 V minimum - preserves stored values during brown-out or deep sleep modes without external power switching. |
| I/O Interface | TTL-compatible inputs/outputs - eliminates level-shifting requirements when interfacing with 5V MCUs or CPLDs. |
| Operating Temp | 0°C to +70°C - qualified for commercial and industrial ambient environments without derating. |
Pinout & Package
Package: 32-pin plastic SOP (525-mil width), JEDEC MS-012AC compliant, lead-free and RoHS-compliant per Renesas specification PRSP0032DA-A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address input | 17-bit unidirectional address bus supporting full 128k-word addressing space. |
| DQ0–DQ7 | Data input/output | 8-bit bidirectional common I/O bus with three-state capability for shared bus architectures. |
| CS1#, CS2 | Chip select inputs | Two independent enables allow hierarchical memory mapping and expansion up to four devices without glue logic. |
| WE# | Write enable | Active-low control signal that initiates write cycles; latches data on falling edge with no setup/hold dependency on address. |
| OE# | Output enable | Tri-states DQ outputs independently of CS state, preventing bus contention during read-modify-write sequences. |
| Vcc, Vss | Power supply | Single 5V supply with dedicated ground - no separate I/O or core voltage rails required. |
| NC | No connection | Pin 1 (SOP top-left) is internally unused; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| No refresh required | Eliminates periodic memory refresh overhead in MCU firmware and reduces system-level timing complexity. |
| OR-tie capable outputs | Enables wired-OR bus configurations for interrupt aggregation or status monitoring without external diodes. |
| Low-voltage data retention | Maintains valid data at Vcc ≥ 2.0V, enabling direct connection to backup batteries without regulator or switcher. |
| 0.6 µA standby current | Reduces quiescent power to <1 µW - suitable for decade-long battery-backed SRAM in metering and logging devices. |
| TTL-compatible signaling | Direct interface with legacy 5V microcontrollers (e.g., 8051, PIC18F), FPGAs, and ASICs without level translators. |
Applications
| Industrial Data Logger | Medical Diagnostic Monitor |
|---|---|
Use Scenario: Continuous acquisition of sensor readings (temperature, pressure, ECG) with periodic flash storage and volatile buffer retention during power loss. IC Role / Device Role / Timing Role: Primary 1MB volatile buffer holding latest 30 seconds of raw waveform data prior to compression and storage. Use Value: 55 ns access time ensures real-time capture at 10 kSPS; 0.6 µA standby current extends coin-cell backup life beyond 5 years. |
Use Scenario: Real-time display buffering and alarm-triggered snapshot capture in portable ultrasound and patient monitors. IC Role / Device Role / Timing Role: Frame buffer for overlay graphics and transient waveform history, accessed synchronously with display controller. Use Value: TTL compatibility enables direct connection to 5V display ASICs; dual CS pins simplify integration with multi-chip memory maps. |
| Programmable Logic Controller (PLC) | Smart Energy Meter |
Use Scenario: Storing ladder logic runtime variables, I/O image tables, and fault history in DIN-rail mounted controllers with 24V DC input. IC Role / Device Role / Timing Role: Non-refreshing working memory for PLC scan cycle execution, isolated from main CPU bus via local address decoder. Use Value: 32-pin SOP footprint allows compact PCB layout; 2.0V data retention ensures parameter persistence during 24V brownouts. |
Use Scenario: Holding tariff schedules, consumption registers, and tamper-event logs in ANSI C12.22-compliant meters powered by lithium-thionyl chloride cells. IC Role / Device Role / Timing Role: Battery-backed configuration memory retaining calibration constants and billing data across 15+ year service life. Use Value: 0.6 µA typical ISB1 enables >10-year backup from a single BR2032 cell; no refresh circuitry avoids leakage-induced data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power parallel SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV102416L-10TLI | 1M × 16-bit organization, 10 ns access, 3.3V only, 44-pin TSOP | Requires data bus width adaptation and level translation for 8-bit systems; unsuitable for 5V-only designs. | Select only if migrating to 16-bit architecture and 3.3V supply; not drop-in compatible with R1LP0108ESP-5SR#S0. |
| AS6C1008-55PCN | 1M × 8-bit, 55 ns access, 5V supply, 32-pin SOP, 1 µA standby (typ) | Higher standby current (1 µA vs. 0.6 µA) reduces battery life in long-term backup; identical pinout and timing. | Valid functional alternative with same footprint and interface; verify ISB1 spec meets system battery lifetime targets. |
Compared with IS61LV102416L-10TLI and AS6C1008-55PCN, the R1LP0108ESP-5SR#S0 delivers superior ultra-low-power retention (0.6 µA) in a proven 5V/32-pin SOP package, making it optimal for cost-sensitive, battery-backed 8-bit embedded systems where standby current directly determines field service interval.
Availability
R1LP0108ESP-5SR#S0 is available at Aetrix Electronics and suitable for industrial data loggers, medical diagnostic monitors, programmable logic controllers, smart energy meters, and battery-backed instrumentation requiring stable component supply across extended product lifecycles.
Supply support for R1LP0108ESP-5SR#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-operated memory applications requiring zero-refresh operation, simple parallel interfacing, and robust data retention - targeting instrumentation, medical, and industrial control systems.
FAQ
What is the maximum operating temperature range for the R1LP0108ESP-5SR#S0?
The R1LP0108ESP-5SR#S0 is rated for operation from 0°C to +70°C, as indicated by the "R" suffix in its ordering code. This commercial-grade temperature range is validated per Renesas DS R10DS0029EJ0300 Rev.3.00 and applies to all electrical specifications including 55 ns access time and 0.6 µA standby current. For extended temperature operation (-40°C to +85°C), the R1LP0108ESP-5SI#S* variant must be selected instead.
Does the R1LP0108ESP-5SR#S0 require an external clock or refresh signal?
No, the R1LP0108ESP-5SR#S0 is a fully static RAM and requires no external clock or refresh signal. Its memory cells retain data indefinitely as long as power is applied and control signals meet timing specifications. This eliminates firmware overhead and timing-critical refresh cycles, making the R1LP0108ESP-5SR#S0 ideal for simple, deterministic memory interfacing in resource-constrained systems.
Can the R1LP0108ESP-5SR#S0 be used with a 3.3V microcontroller interface?
No - the R1LP0108ESP-5SR#S0 is specified for 4.5–5.5V operation only and features TTL-compatible I/O thresholds (VIH = 2.2V min, VIL = 0.8V max). Direct connection to a 3.3V MCU would violate input voltage limits and risk unreliable operation. A level-shifting solution or selection of a 3.3V-compatible SRAM such as the AS6C1008-55PCN (with verified 3.3V tolerance) is required for mixed-voltage systems.
What is the purpose of the NC pin on the R1LP0108ESP-5SR#S0?
The NC (No Connection) pin on the R1LP0108ESP-5SR#S0 - located at position 1 in the 32-pin SOP package - is internally unconnected and must remain floating. Per Renesas datasheet R10DS0029EJ0300 page 3, this pin has no electrical function and should not be tied to Vcc, GND, or any control signal. Leaving it unconnected ensures compliance with the device's validated thermal and electrical performance envelope.
How does the R1LP0108ESP-5SR#S0 achieve data retention below 4.5V?
The R1LP0108ESP-5SR#S0 maintains valid data down to 2.0V Vcc by entering data retention mode when either CS2 ≤ 0.2V or CS1# ≥ Vcc−0.2V (with CS2 ≥ Vcc−0.2V), as defined in the Low Vcc Data Retention Characteristics table (page 14). In this state, internal circuitry minimizes current draw to 0.6 µA typical while preserving memory contents - a feature explicitly validated for battery backup use cases and distinct from normal read/write operation.
R1LP0108ESP-5SR#S0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-SOIC (0.450", 11.40mm Width)
- Packaging:
- Bulk
- 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:
- 55ns
- Access Time:
- 55 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
R1LP0108ESP-5SR#S0 FAQ
1.How can I place an order for R1LP0108ESP-5SR#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0108ESP-5SR#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 R1LP0108ESP-5SR#S0 reliable?
The price and inventory of R1LP0108ESP-5SR#S0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LP0108ESP-5SR#S0 is usually 5 days.
3.What payment methods are accepted for R1LP0108ESP-5SR#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0108ESP-5SR#S0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0108ESP-5SR#S0?
R1LP0108ESP-5SR#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0108ESP-5SR#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 R1LP0108ESP-5SR#S0?
For technical support, including R1LP0108ESP-5SR#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0108ESP-5SR#S0 requirements.
6.How does Aetrix verify that R1LP0108ESP-5SR#S0 is sourced from the original manufacturer or authorized distributors?
All R1LP0108ESP-5SR#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 R1LP0108ESP-5SR#S0 meets industry standards.
7.What is the process for return or replacement of R1LP0108ESP-5SR#S0?
All R1LP0108ESP-5SR#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0108ESP-5SR#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 R1LP0108ESP-5SR#S0 part is unused and in its original packaging.
Return procedure for R1LP0108ESP-5SR#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LP0108ESP-5SR#S0 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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