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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Renesas R1LP0108ESA-5SR#B0

Name: R1LP0108ESA-5SR#B0
Brand: Renesas
SKU: R1LP0108ESA-5SR#B0
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: R1LP0108ESA-5SR#B0

Manufacturer:: Renesas

Category:: Memory

Package:: 32-TFSOP (0.465", 11.80mm Width)

Datasheet:: R1LP0108ESA-5SR#B0.pdf

Description:: IC SRAM 1MBIT PARALLEL 32TSOP I

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Product details

Overview

R1LP0108ESA-5SR#B0 from Renesas Electronics is a 1Mb low-power static RAM (131,072 × 8-bit) fabricated in 0.15µm CMOS/TFT process, operating from 4.5V to 5.5V with 55 ns access time and 0.6 µA typical standby current at 5.0V/25°C. It supports TTL-compatible I/O, no-refresh operation, and dual chip select (CS1#, CS2) for memory expansion - deployed in battery-backed instrumentation and portable industrial controllers.

For engineers reviewing the R1LP0108ESA-5SR#B0 datasheet, R1LP0108ESA-5SR#B0 pinout, R1LP0108ESA-5SR#B0 application, or R1LP0108ESA-5SR#B0 equivalent, this page delivers verified package mapping (32-pin sTSOP), confirmed DC/AC timing parameters, true data retention behavior down to 2.0V, and validated alternatives for legacy SRAM replacement in space-constrained embedded systems.

Technical Context

The R1LP0108ESA-5SR#B0 implements a fully static memory array with no internal clocks or refresh circuitry, relying on address latching and asynchronous control logic. Its dual chip select architecture (CS1# active-low, CS2 active-high) enables hierarchical memory decoding and seamless bank expansion without external logic.

Three-state outputs support OR-tie bus configurations, while OE# and WE# provide independent control of read enable and write strobe timing. Data retention is maintained under low V_CC (down to 2.0V) via either CS2 ≤ 0.2V or CS1# ≥ V_CC−0.2V with CS2 ≥ V_CC−0.2V, enabling ultra-low-power backup modes.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory density	1 Mb (131,072 words × 8 bits) - provides byte-wide interface for microcontroller data buffers without external data-width conversion.
Access time	55 ns - ensures compatibility with 12–15 MHz bus cycles in legacy 8/16-bit MCU systems.
Supply voltage	4.5 V to 5.5 V - operates within standard 5V TTL/CMOS logic rails without regulation overhead.
Standby current	0.6 µA typical at 5.0V/25°C - enables multi-year battery life in always-on backup memory applications.
Data retention V_CC	2.0 V minimum - sustains stored contents during brown-out or battery-switchover events.
Operating temperature	0°C to +70°C - qualified for commercial-grade industrial control panels and test equipment.
Package	32-pin sTSOP (8 mm × 13.4 mm, normal-bend) - surface-mount footprint optimized for high-density PCB layouts.

Pinout & Package

Package: 32-pin plastic sTSOP (PTSA0032KB-A), 8 mm × 13.4 mm body, normal-bend lead form, tray packaging (234 pcs/tray).

Pin/Terminal	Circuit Role	Design Meaning
A0–A16	Address input	17-bit address bus supporting full 131,072-word addressing; no multiplexing required.
DQ0–DQ7	Data I/O	Bi-directional 8-bit data bus with three-state output drivers; supports shared bus topology.
CS1#	Chip select 1	Active-low primary enable; must be low with CS2 high for valid read/write operations.
CS2	Chip select 2	Active-high secondary enable; used with CS1# for hierarchical memory banking.
WE#	Write enable	Active-low write strobe; initiates write cycle when CS1# = L, CS2 = H, WE# = L.
OE#	Output enable	Active-low read gate; prevents bus contention by disabling outputs when high.
Vcc	Power supply	+4.5V to +5.5V main supply; powers core logic and I/O buffers.
Vss	Ground	Reference ground for all signals and internal circuitry.
NC	No connection	Pin 1 (sTSOP top-left corner) is unconnected; must remain floating or grounded per layout guidelines.

Key Features

Feature	Design Value
No clock, no refresh	Eliminates timing-critical refresh circuitry and associated power/complexity in MCU-based systems.
TTL-compatible I/O	Direct interface with legacy 5V microcontrollers (e.g., 8051, Z80, PIC18F) without level-shifting.
OR-tie capability	Three-state outputs allow multiple R1LP0108ESA-5SR#B0 devices to share a common data bus without external bus transceivers.
Dual chip select (CS1#, CS2)	Enables 2:1 memory bank selection or cascaded decoding for >1Mb systems using minimal external logic.
Low-voltage data retention	Maintains stored data at V_CC as low as 2.0V - critical for battery-backed real-time clocks and configuration storage.

Applications

Industrial Data Logger	Medical Device Buffer Memory
Use Scenario: Standalone environmental sensor node recording temperature/humidity at 1-second intervals with local non-volatile storage. IC Role / Device Role / Timing Role: Primary working memory for firmware-managed circular buffer; retains last 10,000 samples during power loss. Use Value: 0.6 µA standby current extends CR2032 battery life beyond 3 years; 55 ns access supports real-time sampling without CPU wait states.	Use Scenario: Portable ECG monitor capturing analog waveforms prior to USB upload, requiring deterministic latency and fail-safe data hold. IC Role / Device Role / Timing Role: High-reliability scratchpad memory holding waveform segments during acquisition; isolated from main SoC power domain. Use Value: 2.0V data retention threshold ensures integrity during battery swap; TTL compatibility avoids signal-integrity risk in mixed-voltage medical PCBs.
Automated Test Equipment (ATE)	Legacy Industrial PLC Module
Use Scenario: Mid-range benchtop tester storing calibration coefficients, user scripts, and pass/fail logs across power cycles. IC Role / Device Role / Timing Role: Non-refresh SRAM for configuration and runtime variable storage; accessed via parallel bus from ARM9 host. Use Value: 32-pin sTSOP footprint fits tight board spacing; 55 ns timing aligns with 16-bit bus arbitration in existing ATE backplane designs.	Use Scenario: Retrofit memory upgrade for discontinued PLC CPU module needing drop-in 1Mb × 8 SRAM replacement. IC Role / Device Role / Timing Role: Direct functional replacement for obsolete 128k × 8 SRAMs (e.g., HM628128) in ladder-logic execution buffers. Use Value: Pin-compatible with industry-standard 32-pin sTSOP layout; identical CS/WE/OE timing eliminates firmware or PCB changes.

Industrial Data Logger

Medical Device Buffer Memory

Use Scenario: Standalone environmental sensor node recording temperature/humidity at 1-second intervals with local non-volatile storage.

IC Role / Device Role / Timing Role: Primary working memory for firmware-managed circular buffer; retains last 10,000 samples during power loss.

Use Value: 0.6 µA standby current extends CR2032 battery life beyond 3 years; 55 ns access supports real-time sampling without CPU wait states.

Use Scenario: Portable ECG monitor capturing analog waveforms prior to USB upload, requiring deterministic latency and fail-safe data hold.

IC Role / Device Role / Timing Role: High-reliability scratchpad memory holding waveform segments during acquisition; isolated from main SoC power domain.

Use Value: 2.0V data retention threshold ensures integrity during battery swap; TTL compatibility avoids signal-integrity risk in mixed-voltage medical PCBs.

Automated Test Equipment (ATE)

Legacy Industrial PLC Module

Use Scenario: Mid-range benchtop tester storing calibration coefficients, user scripts, and pass/fail logs across power cycles.

IC Role / Device Role / Timing Role: Non-refresh SRAM for configuration and runtime variable storage; accessed via parallel bus from ARM9 host.

Use Value: 32-pin sTSOP footprint fits tight board spacing; 55 ns timing aligns with 16-bit bus arbitration in existing ATE backplane designs.

Use Scenario: Retrofit memory upgrade for discontinued PLC CPU module needing drop-in 1Mb × 8 SRAM replacement.

IC Role / Device Role / Timing Role: Direct functional replacement for obsolete 128k × 8 SRAMs (e.g., HM628128) in ladder-logic execution buffers.

Use Value: Pin-compatible with industry-standard 32-pin sTSOP layout; identical CS/WE/OE timing eliminates firmware or PCB changes.

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
CY62128EV30LL-55ZSXIT	55 ns access, 3.3V-only supply (2.2–3.6V), 32-pin TSOP II, 1 µA standby (typ)	Requires level translation in 5V systems; lower voltage margin limits use in mixed-rail industrial boards.	Select only if migrating to 3.3V system architecture; not suitable for direct 5V replacement.
IS61LV10248AL-10TLI	10 ns access, 3.3V supply (3.0–3.6V), 44-pin TSOP II, 12 µA standby (typ)	Faster but higher power; incompatible pinout and voltage - necessitates PCB redesign and firmware timing updates.	Choose for performance-critical upgrades where layout revision and timing validation are feasible.

Compared with CY62128EV30LL-55ZSXIT and IS61LV10248AL-10TLI, the R1LP0108ESA-5SR#B0 uniquely balances 5V compatibility, ultra-low standby current, and legacy pinout - making it the only viable option for cost-sensitive, battery-backed 5V industrial retrofits requiring zero hardware change.

Availability

R1LP0108ESA-5SR#B0 is available at Aetrix Electronics and suitable for industrial data loggers, medical device buffers, automated test equipment, and legacy PLC modules requiring stable component supply across extended production lifecycles.

Supply support for R1LP0108ESA-5SR#B0 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, and memory solutions for industrial, automotive, and infrastructure markets.

The R1LP0108E Series was designed specifically for low-power, battery-operated memory applications where simplicity, reliability, and long-term data retention outweigh raw speed - targeting instrumentation, portable diagnostics, and legacy system maintenance.

FAQ

What is the maximum operating temperature range for the R1LP0108ESA-5SR#B0?

The R1LP0108ESA-5SR#B0 is rated for 0°C to +70°C ambient operation, as indicated by the "R" suffix in its ordering code. This commercial-grade temperature range suits indoor industrial controls, test equipment, and consumer-grade portable instruments. The device does not support extended −40°C to +85°C operation - that variant is designated R1LP0108ESA-5SI#B0.

Does the R1LP0108ESA-5SR#B0 require an external clock or refresh signal?

No, the R1LP0108ESA-5SR#B0 is a fully static RAM and requires no external clock or periodic refresh cycles. Its operation is purely asynchronous and controlled solely by CS1#, CS2, WE#, and OE# signals. This eliminates timing-critical refresh overhead and simplifies integration with microcontrollers lacking dedicated SRAM controllers.

Can the R1LP0108ESA-5SR#B0 retain data when V_CC drops below 4.5V?

Yes, the R1LP0108ESA-5SR#B0 maintains data integrity down to V_CC = 2.0V under specific control conditions: either CS2 ≤ 0.2V or CS1# ≥ V_CC−0.2V with CS2 ≥ V_CC−0.2V. This low-voltage retention mode enables reliable operation during brown-out events and battery switchover in backup memory applications.

Is the R1LP0108ESA-5SR#B0 pin-compatible with other 32-pin sTSOP SRAMs?

The R1LP0108ESA-5SR#B0 follows standard 32-pin sTSOP pinout (PTSA0032KB-A), matching industry conventions for A0–A16, DQ0–DQ7, CS1#, CS2, WE#, OE#, Vcc, and Vss. However, pin compatibility does not guarantee functional equivalence - verify timing, voltage, and control logic (e.g., CS2 active-high vs. active-low in other families) before substitution.

What is the typical standby current of the R1LP0108ESA-5SR#B0 at 5.0V?

The typical standby current of the R1LP0108ESA-5SR#B0 is 0.6 µA at V_CC = 5.0V and T_A = 25°C, measured under data retention conditions (CS2 ≤ 0.2V or CS1# ≥ V_CC−0.2V). This ultra-low value enables multi-year battery life in always-on memory backup circuits without supplemental power management ICs.

R1LP0108ESA-5SR#B0 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 32-TFSOP (0.465", 11.80mm Width)

Packaging:: Tray

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-TSOP I

R1LP0108ESA-5SR#B0 FAQ

1.How can I place an order for R1LP0108ESA-5SR#B0 through Aetrix?

Please submit a Request for Quotation (RFQ) for R1LP0108ESA-5SR#B0 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 R1LP0108ESA-5SR#B0 reliable?

The price and inventory of R1LP0108ESA-5SR#B0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LP0108ESA-5SR#B0 is usually 5 days.

3.What payment methods are accepted for R1LP0108ESA-5SR#B0?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0108ESA-5SR#B0 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for R1LP0108ESA-5SR#B0?

R1LP0108ESA-5SR#B0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your R1LP0108ESA-5SR#B0 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 R1LP0108ESA-5SR#B0?

For technical support, including R1LP0108ESA-5SR#B0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0108ESA-5SR#B0 requirements.

6.How does Aetrix verify that R1LP0108ESA-5SR#B0 is sourced from the original manufacturer or authorized distributors?

All R1LP0108ESA-5SR#B0 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 R1LP0108ESA-5SR#B0 meets industry standards.

7.What is the process for return or replacement of R1LP0108ESA-5SR#B0?

All R1LP0108ESA-5SR#B0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0108ESA-5SR#B0, 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 R1LP0108ESA-5SR#B0 part is unused and in its original packaging.

Return procedure for R1LP0108ESA-5SR#B0:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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