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Renesas R1LV0108ESF-7SI#S0
- Part No.:
- R1LV0108ESF-7SI#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
R1LV0108ESF-7SI#S0.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:3,881
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Product details
Overview
R1LV0108ESF-7SI#S0 from Renesas Electronics is a 1Mb low-power static RAM (128k × 8-bit) in 32-pin TSOP package, operating from 2.7V to 3.6V with 70 ns access time 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 easy memory expansion in battery-backed systems.
For engineers reviewing the R1LV0108ESF-7SI#S0 datasheet, R1LV0108ESF-7SI#S0 pinout, R1LV0108ESF-7SI#S0 application, or R1LV0108ESF-7SI#S0 equivalent, key selection criteria include standby current (0.6 µA typical at 3.0V), data retention down to 2.0V, three-state outputs with OR-tie capability, and compatibility with legacy 8-bit microcontroller buses requiring simple parallel interface and low quiescent power.
Technical Context
The R1LV0108ESF-7SI#S0 implements a fully static CMOS memory architecture with no internal clocks or refresh circuitry, enabling deterministic timing and zero-latency read/write cycles. Its dual chip select logic (CS1# active-low, CS2 active-high) supports hierarchical memory mapping and seamless bank expansion without external glue logic.
All address (A0–A16), data (DQ0–DQ7), and control inputs (WE#, OE#, CS1#, CS2) are TTL-compatible, ensuring direct interfacing with 3.3V or 5V logic families via level-shifting or bus-hold design. The device uses a single Vcc supply and achieves data retention at Vcc as low as 2.0V when placed in standby via CS2 or CS1# control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Capacity | 1 Mb (131,072 × 8-bit); supports byte-wide data transfers without width conversion logic |
| Access Time | 70 ns max; guarantees full-speed operation with 14.3 MHz bus clock (tRC = 70 ns) |
| Supply Voltage | 2.7–3.6 V; compatible with regulated 3.3V rails and tolerant of brown-out conditions down to 2.0V for data retention |
| Standby Current | 0.6 µA typical at 3.0V/25°C; enables multi-year battery backup in portable instrumentation and metering |
| Operating Temperature | -40°C to +85°C; qualified for industrial environments including factory automation and outdoor telemetry |
| I/O Interface | TTL-compatible inputs/outputs; eliminates need for voltage translators when interfacing with legacy 3.3V or 5V microcontrollers |
| Chip Select Logic | CS1# (active-low) + CS2 (active-high); allows flexible decoding for multi-bank memory systems using standard logic gates |
Pinout & Package
Package: 32-pin plastic TSOP (normal-bend type), 8 mm × 20 mm body, JEDEC standard PTSA0032KA-A footprint (32P3H-E).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address input | 17-bit address bus supporting full 128k-word addressing; A16 enables access beyond 64k boundary |
| DQ0–DQ7 | Data I/O | Bi-directional 8-bit data bus with three-state output drivers; supports OR-tie for shared-bus configurations |
| 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 decode or data retention entry |
| WE# | Write enable | Active-low write strobe; latches data on falling edge when CS1# = L and CS2 = H |
| OE# | Output enable | Active-low read control; places DQ pins in high-Z when deasserted to prevent bus contention |
| Vcc | Power supply | Single 2.7–3.6V supply; powers all internal logic and I/O buffers |
| Vss | Ground | Reference return path for all signals and internal circuitry |
| NC | No connection | Pin 1 (SOP/TSOP) is unconnected; must remain floating or tied to ground per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| No refresh required | Eliminates external refresh controller or timer overhead, reducing firmware complexity and system power |
| Low standby current (0.6 µA) | Extends battery life in always-on backup mode; supports >10-year retention on coin-cell batteries |
| Common data I/O (DQ0–DQ7) | Reduces PCB trace count and simplifies routing versus separate data-in/data-out architectures |
| OR-tie capable outputs | Enables wired-OR bus sharing across multiple devices without external pull-ups or logic gates |
| Two-chip-select architecture (CS1#, CS2) | Supports 4-way memory expansion (CS1#/CS2 combinations) without address-line decoding logic |
Applications
| Industrial Data Logger | Medical Patient Monitor |
|---|---|
Use Scenario: Continuous acquisition of sensor data (ECG, SpO₂, temperature) with periodic flash storage and real-time display buffering. IC Role / Device Role / Timing Role: Primary SRAM buffer between ADC subsystem and ARM Cortex-M4 host MCU, holding up to 128 kB of raw waveform data before compression. Use Value: 70 ns access time ensures zero wait-state operation at 14.3 MHz bus speed; 0.6 µA standby current preserves battery charge during sleep intervals between measurements. |
Use Scenario: Real-time vital sign trending with local alarm generation and USB/HID report buffering prior to host PC upload. IC Role / Device Role / Timing Role: Dual-port accessible memory for concurrent read (display engine) and write (acquisition engine) via CS1#/CS2 arbitration. Use Value: TTL-compatible I/O interfaces directly with 3.3V medical-grade microcontrollers; -40°C to +85°C rating supports operation in uncontrolled clinical environments. |
| Smart Electricity Meter | Factory Automation PLC Module |
Use Scenario: Tamper-resistant energy accumulation with cryptographic timestamping and secure boot log storage across power cycles. IC Role / Device Role / Timing Role: Battery-backed SRAM storing critical metering registers, calibration constants, and last-read timestamps during AC mains dropout. Use Value: Data retention down to 2.0V Vcc enables >10-year backup with supercapacitor or lithium-thionyl chloride cell; no refresh extends reliability over 20+ year service life. |
Use Scenario: Local I/O state caching and motion-control trajectory buffering in distributed I/O modules with EtherCAT or PROFINET interfaces. IC Role / Device Role / Timing Role: High-reliability scratchpad memory for deterministic cyclic data exchange between FPGA-based protocol stack and ARM application processor. Use Value: 32-pin TSOP package provides mechanical robustness against vibration; industrial temp rating ensures stable operation in cabinet-mounted enclosures near motor drives. |
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-70ZSXIT | 70 ns access, 2.2–3.6V supply, 32-pin TSOP, but requires 3.3V ±10% - no 2.7V operation or sub-2.0V retention | Lacks low-voltage data retention; unsuitable for long-term battery backup below 2.2V | Choose only if system operates strictly within 3.0–3.6V and does not require extended Vcc brown-out support |
| IS61LV25616AL-10TLI | 100 ns access, 3.3V-only supply, 44-pin TSOP, 256K × 16 organization - wider bus, slower timing, incompatible pinout | Requires bus-width adaptation and PCB redesign; higher standby current (1 µA) | Select only when 16-bit data path and larger capacity justify layout change and timing budget relaxation |
Compared with CY62128EV30LL-70ZSXIT and IS61LV25616AL-10TLI, the R1LV0108ESF-7SI#S0 uniquely delivers 70 ns performance with 2.7–3.6V flexibility and verified 2.0V data retention - making it the only option among the three suitable for battery-critical, wide-input-voltage industrial logging systems.
Availability
R1LV0108ESF-7SI#S0 is available at Aetrix Electronics and suitable for industrial data loggers, medical patient monitors, and smart electricity meters requiring stable component supply, long-lifecycle assurance, and guaranteed availability through 2030.
Supply support for R1LV0108ESF-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 is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and infrastructure markets.
The R1LV0108E Series was designed specifically for low-voltage, battery-operated memory applications where simplicity, zero-refresh operation, and ultra-low standby current are mandatory - targeting portable instrumentation, utility metering, and medical edge devices.
FAQ
What is the minimum supply voltage required to retain data in R1LV0108ESF-7SI#S0?
The R1LV0108ESF-7SI#S0 maintains stored data down to 2.0V Vcc when placed in standby mode via CS2 ≤ 0.2V or CS1# ≥ Vcc−0.2V with CS2 ≥ Vcc−0.2V. This low-voltage retention capability is confirmed in the datasheet's "Low Vcc Data Retention Characteristics" table (Page 12) and enables reliable operation during brown-out events in battery-powered systems.
Does R1LV0108ESF-7SI#S0 require an external clock or refresh signal?
No, the R1LV0108ESF-7SI#S0 is a fully static RAM and contains no internal clock or refresh circuitry. It retains data indefinitely as long as power is applied and appropriate chip select conditions are met. This eliminates timing-critical refresh overhead and simplifies integration with microcontrollers lacking dedicated SRAM controllers.
What is the function of the NC pin on R1LV0108ESF-7SI#S0?
Pin 1 of the R1LV0108ESF-7SI#S0 32-pin TSOP package is designated NC (No Connection) and must remain unconnected - neither tied to Vcc nor grounded. This is explicitly shown in the Pin Arrangement diagram (Page 3) and verified across SOP, sTSOP, and TSOP variants of the R1LV0108E Series.
Can R1LV0108ESF-7SI#S0 interface directly with a 5V microcontroller?
Yes, the R1LV0108ESF-7SI#S0 has TTL-compatible inputs (VIH = 2.0V min, VIL = 0.6V max) and outputs (VOH = 2.4V min at -0.5mA), allowing safe direct connection to 5V logic outputs and reliable recognition of 5V-high signals. However, its outputs swing only to ~Vcc (≤3.6V), so 5V-tolerant inputs on the MCU are recommended for robustness.
How does the dual chip select (CS1# and CS2) simplify memory expansion in R1LV0108ESF-7SI#S0?
The R1LV0108ESF-7SI#S0 uses CS1# (active-low) and CS2 (active-high) to define four distinct enable states. By decoding upper address bits into these two signals, designers can implement up to four independent 128k×8 banks without external address comparators - reducing gate count and improving timing margin compared to single-CS architectures.
R1LV0108ESF-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:
- 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:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP I
R1LV0108ESF-7SI#S0 FAQ
1.How can I place an order for R1LV0108ESF-7SI#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LV0108ESF-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 R1LV0108ESF-7SI#S0 reliable?
The price and inventory of R1LV0108ESF-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 R1LV0108ESF-7SI#S0 is usually 5 days.
3.What payment methods are accepted for R1LV0108ESF-7SI#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LV0108ESF-7SI#S0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LV0108ESF-7SI#S0?
R1LV0108ESF-7SI#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LV0108ESF-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 R1LV0108ESF-7SI#S0?
For technical support, including R1LV0108ESF-7SI#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LV0108ESF-7SI#S0 requirements.
6.How does Aetrix verify that R1LV0108ESF-7SI#S0 is sourced from the original manufacturer or authorized distributors?
All R1LV0108ESF-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 R1LV0108ESF-7SI#S0 meets industry standards.
7.What is the process for return or replacement of R1LV0108ESF-7SI#S0?
All R1LV0108ESF-7SI#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LV0108ESF-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 R1LV0108ESF-7SI#S0 part is unused and in its original packaging.
Return procedure for R1LV0108ESF-7SI#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LV0108ESF-7SI#S0 Tags
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