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Renesas R1LP0108ESF-7SI#S0
- Part No.:
- R1LP0108ESF-7SI#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
R1LP0108ESF-7SI#S0.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:3,761
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Product details
Overview
R1LP0108ESF-7SI#S0 from Renesas Electronics is a 1Mb low-power static RAM organized as 131,072 × 8-bit, fabricated in 0.15µm CMOS/TFT process, operating from 4.5V to 5.5V with 70ns access time and -40°C to +85°C industrial temperature range, packaged in 32-pin TSOP (8mm × 20mm, normal-bend type), and used for battery-backed memory in portable instrumentation and embedded control systems.
For engineers reviewing the R1LP0108ESF-7SI#S0 datasheet, R1LP0108ESF-7SI#S0 pinout, R1LP0108ESF-7SI#S0 application, or R1LP0108ESF-7SI#S0 equivalent, key selection criteria include industrial-grade data retention at low VCC, TTL-compatible I/O, no-refresh operation, and dual chip select architecture for memory expansion.
Technical Context
The R1LP0108ESF-7SI#S0 implements a fully static memory array with no internal clocks or refresh circuitry, relying on address latching via CS1# and CS2 to enable read/write cycles. Its dual chip select (CS1# active-low, CS2 active-high) allows hierarchical memory mapping and seamless expansion without external logic.
It features three-state bidirectional DQ0–DQ7 I/O with OR-tie capability and OE#-controlled output enable, supporting bus sharing in multi-device systems. Standby current is minimized to 0.6µA typical at 5.0V and 25°C via CS2-controlled or CS1#-controlled data retention modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 131,072 words × 8 bits = 1 Mbit; supports byte-wide data interface without external multiplexing. |
| Access time | 70 ns max; defines minimum cycle time for reliable read/write in high-speed microcontroller interfaces. |
| Supply voltage | 4.5 V to 5.5 V; compatible with standard 5V TTL/CMOS logic rails and tolerant of supply ripple. |
| Standby current | 0.6 µA typical at 5.0 V and 25°C; enables multi-year battery backup in off-grid sensor nodes. |
| Operating temperature | -40°C to +85°C; qualified for industrial environments including factory automation and outdoor telemetry. |
| Data retention VCC | 2.0 V min; retains stored data during brown-out or battery depletion without external capacitor hold-up. |
| I/O compatibility | TTL input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V); interoperable with legacy 5V microcontrollers and FPGAs. |
Pinout & Package
Package: 32-pin plastic TSOP (8mm × 20mm, normal-bend type, JEDEC MO-141 compliant, package code PTSA0032KA-A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address inputs | 17-bit address bus supporting full 131k-word decoding; A16 enables upper half of memory space. |
| DQ0–DQ7 | Bi-directional data I/O | Common data bus with three-state outputs; supports OR-tie for wired-AND bus architectures. |
| CS1# | Chip select 1 (active-low) | Primary enable; must be low with CS2 high for valid access; controls internal buffers and array activation. |
| CS2 | Chip select 2 (active-high) | Secondary enable; used with CS1# for hierarchical decode or data retention mode selection. |
| WE# | Write enable (active-low) | Initiates write cycle when CS1# low and CS2 high; timing-critical for setup/hold compliance. |
| OE# | Output enable (active-low) | Gates DQ outputs to prevent bus contention; high-Z state maintained when OE# is high. |
| Vcc | Power supply | +4.5 V to +5.5 V supply; decoupling required within 1 cm of pin per datasheet layout guidelines. |
| Vss | Ground | Signal reference plane; requires low-inductance connection to system ground plane. |
| NC | No connect | Pin 1 (SOP/TSOP top-left corner); must remain unconnected per Renesas design rules. |
Key Features
| Feature | Design Value |
|---|---|
| No refresh required | Eliminates external refresh controller or timer overhead, simplifying firmware and reducing BOM count. |
| Low standby current (0.6 µA) | Enables >10-year data retention on coin-cell batteries in maintenance-free remote sensors. |
| Dual chip select (CS1#, CS2) | Supports up to four R1LP0108ESF-7SI#S0 devices on one bus using 2-bit decode logic. |
| TTL-compatible I/O | Direct interface to 5V microcontrollers (e.g., Renesas RL78, legacy 8051) without level-shifting. |
| Data retention down to 2.0 V | Preserves memory contents during power failure or deep discharge, critical for black-box logging. |
Applications
| Industrial Data Logger | Medical Diagnostic Device |
|---|---|
Use Scenario: Continuous acquisition of ECG waveforms at 1 kS/s with timestamped storage during battery-powered operation. IC Role / Device Role / Timing Role: Non-volatile buffer storing raw samples prior to SD card transfer; operates in low-VCC retention mode during sleep intervals. Use Value: 0.6 µA standby current extends single CR2032 battery life to >3 years; 70 ns access enables real-time waveform capture without CPU wait states. |
Use Scenario: Temporary storage of calibration coefficients and fault logs in portable ultrasound probe head. IC Role / Device Role / Timing Role: Battery-backed SRAM holding critical configuration data across power cycles and thermal stress. Use Value: -40°C to +85°C rating ensures reliability inside sealed probe housing; 2.0 V data retention prevents loss during cold-start battery ramp-up. |
| Factory Automation PLC Module | Smart Energy Meter |
Use Scenario: Storing I/O state snapshots and diagnostic history in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Fast-access scratchpad memory for cyclic scan execution and watchdog-triggered dump-on-failure. Use Value: Dual CS architecture allows expansion to 4 MB using four R1LP0108ESF-7SI#S0 units; TTL compatibility avoids level translators in legacy 5V backplane designs. |
Use Scenario: Holding tamper-event timestamps and billing interval registers during AC mains dropout. IC Role / Device Role / Timing Role: Primary non-volatile memory for metering firmware variables, backed by supercapacitor during grid outage. Use Value: 70 ns access time meets IEC 62056-21 real-time register update requirements; industrial temp grade withstands transformer-adjacent mounting. |
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 |
|---|---|---|---|
| CY62128ELL-70ZSXIT | Same 128k×8 organization, 70 ns access, but 3.3 V only (2.2–3.6 V); higher standby current (1 µA typ). | Requires 3.3 V rail and level shifters for 5V systems; unsuitable for direct 5V battery backup. | Select only if system already uses 3.3 V core logic and board space permits redesign. |
| IS61LV10248AL-70TQLI | 128k×8, 70 ns, 3.3 V supply; lower standby current (0.5 µA typ), but no 2.0 V data retention guarantee. | Lacks low-VCC retention spec - fails under brown-out conditions where R1LP0108ESF-7SI#S0 remains functional. | Prefer for 3.3 V systems prioritizing ultra-low leakage over brown-out resilience. |
Compared with CY62128ELL-70ZSXIT and IS61LV10248AL-70TQLI, the R1LP0108ESF-7SI#S0 uniquely combines 5V operation, 2.0 V data retention, and 0.6 µA standby in a single industrial-grade TSOP package - making it irreplaceable in legacy 5V battery-backed instrumentation.
Availability
R1LP0108ESF-7SI#S0 is available at Aetrix Electronics and suitable for industrial data loggers, medical diagnostic devices, and factory automation PLC modules requiring stable component supply across extended product lifecycles.
Supply support for R1LP0108ESF-7SI#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 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 demanding zero-refresh operation, wide temperature tolerance, and robust data retention - targeting portable instrumentation and embedded control.
FAQ
What is the maximum operating frequency supported by the R1LP0108ESF-7SI#S0?
The R1LP0108ESF-7SI#S0 does not operate on a clock signal - it is a static RAM with asynchronous timing. Its 70 ns access time corresponds to a maximum effective interface speed of approximately 14.3 MHz in continuous read cycles, assuming minimal address setup/hold and proper bus loading. The R1LP0108ESF-7SI#S0 achieves this without internal clocks or refresh, making it ideal for deterministic real-time systems.
Does the R1LP0108ESF-7SI#S0 require an external refresh circuit?
No, the R1LP0108ESF-7SI#S0 is a true static RAM and contains no dynamic storage cells - it requires no external or internal refresh circuitry. All data is retained as long as power is applied and address/control signals meet timing specifications. This eliminates refresh overhead in firmware and removes associated timing jitter, a key advantage of the R1LP0108ESF-7SI#S0 in safety-critical logging applications.
Can the R1LP0108ESF-7SI#S0 retain data when VCC drops below 4.5 V?
Yes, the R1LP0108ESF-7SI#S0 guarantees data retention down to 2.0 V VCC when placed in retention mode via CS2 ≤ 0.2 V or CS1# ≥ VCC−0.2 V. At 3.0 V and 25°C, standby current is 0.6 µA typical - enabling multi-year retention on small backup capacitors or coin cells. This behavior is explicitly characterized in the R1LP0108ESF-7SI#S0 datasheet Section 12.
What is the function of the NC pin on the R1LP0108ESF-7SI#S0?
The NC (No Connect) pin on the R1LP0108ESF-7SI#S0 is Pin 1 in the 32-pin TSOP package (PTSA0032KA-A). It is internally unconnected and must remain floating - no trace, pad, or solder should contact this pin. Renesas specifies this to prevent unintended coupling or latch-up; violating this may cause unpredictable behavior or increased leakage in the R1LP0108ESF-7SI#S0.
How does the dual chip select (CS1# and CS2) architecture benefit system design with the R1LP0108ESF-7SI#S0?
The R1LP0108ESF-7SI#S0's CS1# (active-low) and CS2 (active-high) allow flexible memory mapping: CS1# can serve as primary enable while CS2 selects between normal operation and data retention mode, or both can be decoded together for 2-bit chip selection across up to four devices. This eliminates need for external logic in expanded memory systems - a distinct advantage of the R1LP0108ESF-7SI#S0 over single-CS SRAMs.
R1LP0108ESF-7SI#S0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm 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:
- 70ns
- Access Time:
- 70 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-7SI#S0 FAQ
1.How can I place an order for R1LP0108ESF-7SI#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0108ESF-7SI#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-7SI#S0 reliable?
The price and inventory of R1LP0108ESF-7SI#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-7SI#S0 is usually 5 days.
3.What payment methods are accepted for R1LP0108ESF-7SI#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0108ESF-7SI#S0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0108ESF-7SI#S0?
R1LP0108ESF-7SI#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0108ESF-7SI#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-7SI#S0?
For technical support, including R1LP0108ESF-7SI#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0108ESF-7SI#S0 requirements.
6.How does Aetrix verify that R1LP0108ESF-7SI#S0 is sourced from the original manufacturer or authorized distributors?
All R1LP0108ESF-7SI#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-7SI#S0 meets industry standards.
7.What is the process for return or replacement of R1LP0108ESF-7SI#S0?
All R1LP0108ESF-7SI#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0108ESF-7SI#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-7SI#S0 part is unused and in its original packaging.
Return procedure for R1LP0108ESF-7SI#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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