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Renesas R1LP0108ESF-5SI#S0
- Part No.:
- R1LP0108ESF-5SI#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
R1LP0108ESF-5SI#S0.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:3,002
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Product details
Overview
R1LP0108ESF-5SI#S0 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. It features TTL-compatible I/O, no refresh requirement, and dual chip select (CS1#, CS2) for seamless memory expansion in embedded controllers and battery-backed systems.
For engineers reviewing the R1LP0108ESF-5SI#S0 datasheet, R1LP0108ESF-5SI#S0 pinout, R1LP0108ESF-5SI#S0 application, or R1LP0108ESF-5SI#S0 equivalent, key selection criteria include standby current (0.6 µA typical at 5.0 V), data retention down to 2.0 V, three-state outputs with OR-tie capability, and TSOP packaging compatible with space-constrained industrial PCB layouts.
Technical Context
The R1LP0108ESF-5SI#S0 implements a fully static 128k-word × 8-bit memory array using Renesas's 0.15 µm CMOS process, eliminating clocking and refresh circuitry. Its dual chip select architecture (CS1# active-low, CS2 active-high) enables hierarchical memory mapping without external logic.
Read and write operations are controlled by independent OE# and WE# signals with defined timing windows (tOE = 30 ns max, tWP = 45 ns min). The device supports data retention at Vcc as low as 2.0 V when placed in standby via CS2 ≤ 0.2 V or CS1# ≥ Vcc−0.2 V, enabling reliable battery backup operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mb (131,072 words × 8 bits) - provides byte-wide data bus interface without multiplexing |
| Access Time | 55 ns - ensures compatibility with 12–15 MHz microcontroller buses |
| Supply Voltage | 4.5–5.5 V - operates across standard 5 V rail tolerances including aging or load-induced droop |
| Standby Current | 0.6 µA typical at 5.0 V / 25°C - enables multi-year battery life in always-on backup mode |
| Data Retention Vcc | 2.0 V minimum - maintains stored data during brown-out or primary power loss |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade environmental stress without derating |
| I/O Compatibility | TTL - interfaces directly with legacy 5 V microcontrollers and FPGAs without level shifters |
Pinout & Package
Package: 32-pin plastic TSOP (8 mm × 20 mm, normal-bend type, PTSA0032KA-A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Input | 17-bit address bus supporting full 131,072-word addressing without bank switching |
| DQ0–DQ7 | Data I/O | Bi-directional 8-bit data bus with three-state output control via OE# and CS states |
| CS1# | Chip Select 1 | Active-low primary enable; must be low with CS2 high for read/write access |
| CS2 | Chip Select 2 | Active-high secondary enable; controls buffer activation and data retention entry |
| WE# | Write Enable | Active-low signal initiating write cycle; latches data on falling edge with CS1#/CS2 asserted |
| OE# | Output Enable | Active-low control of output drivers; prevents bus contention during shared-memory arbitration |
| Vcc | Power Supply | +4.5 V to +5.5 V supply input; decoupling required within 10 mm of pin |
| Vss | Ground | Signal reference return; requires low-inductance connection to system ground plane |
| NC | No Connection | Pin 1 (top-left corner in TSOP top view); must remain unconnected per design |
Key Features
| Feature | Design Value |
|---|---|
| No refresh required | Eliminates external refresh controller or timer overhead in microcontroller-based systems |
| OR-tie capable outputs | Enables direct wire-OR connection of multiple R1LP0108ESF-5SI#S0 devices on same data bus |
| Dual chip select logic | Supports hierarchical memory decoding with CS1# and CS2 used for page/segment selection |
| Low-voltage data retention | Maintains valid data at Vcc = 2.0 V, enabling use with coin-cell or supercapacitor backup |
| TTL-compatible signaling | Direct interface with 5 V MCUs, CPLDs, and legacy peripherals without voltage translation |
Applications
| Industrial PLC Data Buffer | Medical Device Parameter Storage |
|---|---|
Use Scenario: Storing real-time sensor logs and configuration parameters in programmable logic controllers operating in factory environments with wide temperature swings and intermittent power. IC Role / Device Role / Timing Role: Non-volatile data buffer providing fast random-access read/write during runtime and retaining critical settings during main power loss. Use Value: 0.6 µA standby current extends supercapacitor hold-up time to >72 hours; 55 ns access enables deterministic response within PLC scan cycles. |
Use Scenario: Holding calibration coefficients and patient-specific therapy profiles in portable infusion pumps and diagnostic monitors requiring FDA-compliant data integrity. IC Role / Device Role / Timing Role: Battery-backed SRAM ensuring zero-data-loss during battery swaps or AC power interruptions. Use Value: Data retention down to 2.0 V guarantees uninterrupted storage even as backup battery discharges to end-of-life voltage. |
| Automotive Telematics Log Memory | Test Equipment Configuration Cache |
Use Scenario: Recording GPS position snapshots and CAN bus event timestamps in vehicle telematics units exposed to under-hood thermal stress (-40°C to +85°C). IC Role / Device Role / Timing Role: High-reliability scratchpad memory interfacing directly with automotive-grade microcontrollers via 5 V tolerant I/O. Use Value: Industrial temperature rating eliminates need for thermal derating; TTL compatibility avoids level-shifter BOM cost and layout area. |
Use Scenario: Caching instrument setup states and calibration offsets in automated test equipment where fast reconfiguration between DUTs is required. IC Role / Device Role / Timing Role: Low-latency, non-refresh memory enabling sub-millisecond register reloads during test sequence changes. Use Value: 55 ns access time reduces test cycle overhead by >12% compared to 70 ns alternatives; dual CS pins simplify multi-module address decoding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power 1Mb SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62128EV30LL-55ZSXIT | 55 ns access, 32-pin TSOP, but 2.7–3.6 V only supply - incompatible with 5 V systems | Requires level shifting or separate 3.3 V rail; unsuitable for direct 5 V MCU interface | Select only if system already uses 3.3 V logic and board has dedicated LDO for memory rail |
| IS61LV10248AL-10TLI | 10 ns access, 44-pin TSOP, 3.3 V supply - faster but higher power and incompatible voltage | Higher ICC1 (55 mA vs. 35 mA) and no 2.0 V data retention; not drop-in replaceable | Consider only for new designs prioritizing speed over power and voltage compatibility |
Compared with CY62128EV30LL-55ZSXIT and IS61LV10248AL-10TLI, the R1LP0108ESF-5SI#S0 uniquely combines 5 V operation, 55 ns speed, sub-µA standby, and 2.0 V data retention in a 32-pin TSOP - making it the sole option for industrial 5 V systems requiring long-term battery backup without voltage translation.
Availability
R1LP0108ESF-5SI#S0 is available at Aetrix Electronics and suitable for industrial PLC data buffering, medical device parameter storage, and automotive telematics log memory requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for R1LP0108ESF-5SI#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, and memory solutions for industrial, automotive, and infrastructure markets.
The R1LP0108E Series was designed specifically for low-power, battery-backed memory applications in space-constrained industrial and medical equipment where reliability, simplicity, and wide temperature operation are critical.
FAQ
What is the maximum operating frequency supported by R1LP0108ESF-5SI#S0?
The R1LP0108ESF-5SI#S0 does not operate on a clock signal - it is a static RAM with asynchronous timing. Its 55 ns access time supports reliable interfacing with microcontrollers running up to approximately 12–15 MHz bus frequencies, assuming proper setup/hold timing margins are maintained in the host design.
Does R1LP0108ESF-5SI#S0 require an external clock or refresh circuit?
No, the R1LP0108ESF-5SI#S0 is a fully static RAM and requires neither an external clock nor periodic refresh cycles. All memory cells retain data as long as power is applied and control signals meet specification timing - simplifying system design and reducing firmware overhead.
Can R1LP0108ESF-5SI#S0 retain data when Vcc drops below 4.5 V?
Yes, the R1LP0108ESF-5SI#S0 guarantees data retention down to Vcc = 2.0 V when placed in standby mode via CS2 ≤ 0.2 V or CS1# ≥ Vcc−0.2 V. This enables robust operation during brown-out conditions or with backup batteries discharging to endpoint voltage.
What is the function of the NC pin on R1LP0108ESF-5SI#S0?
Pin 1 of the R1LP0108ESF-5SI#S0 in its 32-pin TSOP package is designated NC (No Connection) and must remain unconnected. It is not internally bonded and serves only as a mechanical alignment marker - routing or soldering to this pin may cause functional failure or damage.
How does the dual chip select (CS1# and CS2) architecture improve memory expansion with R1LP0108ESF-5SI#S0?
The R1LP0108ESF-5SI#S0 uses CS1# (active-low) and CS2 (active-high) to enable hierarchical decoding: CS2 selects memory segments while CS1# enables individual devices within each segment. This allows up to eight R1LP0108ESF-5SI#S0 devices to share one 8-bit data bus without external logic, reducing PCB complexity and BOM count.
R1LP0108ESF-5SI#S0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm 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:
- 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-TSOP I
R1LP0108ESF-5SI#S0 FAQ
1.How can I place an order for R1LP0108ESF-5SI#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0108ESF-5SI#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 R1LP0108ESF-5SI#S0 reliable?
The price and inventory of R1LP0108ESF-5SI#S0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LP0108ESF-5SI#S0 is usually 5 days.
3.What payment methods are accepted for R1LP0108ESF-5SI#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0108ESF-5SI#S0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0108ESF-5SI#S0?
R1LP0108ESF-5SI#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0108ESF-5SI#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 R1LP0108ESF-5SI#S0?
For technical support, including R1LP0108ESF-5SI#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0108ESF-5SI#S0 requirements.
6.How does Aetrix verify that R1LP0108ESF-5SI#S0 is sourced from the original manufacturer or authorized distributors?
All R1LP0108ESF-5SI#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 R1LP0108ESF-5SI#S0 meets industry standards.
7.What is the process for return or replacement of R1LP0108ESF-5SI#S0?
All R1LP0108ESF-5SI#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0108ESF-5SI#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 R1LP0108ESF-5SI#S0 part is unused and in its original packaging.
Return procedure for R1LP0108ESF-5SI#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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