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Renesas R1LV0108ESA-7SR#B0
- Part No.:
- R1LV0108ESA-7SR#B0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-TFSOP (0.465", 11.80mm Width)
- Datasheet:
-
R1LV0108ESA-7SR#B0.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:3,246
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Product details
Overview
R1LV0108ESA-7SR#B0 from Renesas Electronics is a 1Mb (128k × 8-bit) low-power static RAM with 70 ns access time, single 2.7–3.6 V supply, and 0.6 µA typical standby current at 3.0 V. It operates across 0 to +70°C, uses sTSOP-32 packaging, and supports battery-backed memory systems requiring no refresh or clocks.
For engineers reviewing the R1LV0108ESA-7SR#B0 datasheet, R1LV0108ESA-7SR#B0 pinout, R1LV0108ESA-7SR#B0 application, or R1LV0108ESA-7SR#B0 equivalent, key selection criteria include low-voltage operation, TTL-compatible I/O, dual chip select architecture for memory expansion, and verified data retention down to 2.0 V.
Technical Context
This device implements a fully static CMOS memory array with 128k-word × 8-bit organization, fabricated on Renesas's 0.15 µm process. Its dual chip select (CS1# and CS2) enables seamless bank expansion without external logic, while common DQ0–DQ7 bidirectional I/O simplifies bus interfacing.
The architecture eliminates refresh circuitry and clock inputs, relying instead on asynchronous control via WE#, OE#, and chip selects. Standby mode is entered when CS2 is low or both CS2 high and CS1# high, achieving sub-microamp current draw-critical for battery-critical applications like portable instrumentation and backup SRAM buffers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Mb (131,072 × 8-bit); supports byte-wide data paths without external multiplexing |
| Access Time | 70 ns max; ensures compatibility with legacy 70 ns bus timing in industrial controllers and legacy microcontrollers |
| Supply Voltage | 2.7–3.6 V; interoperable with 3.3 V logic families and tolerant of Li-ion battery discharge curves |
| Standby Current | 0.6 µA typical at 3.0 V/25°C; enables multi-year battery life in always-on backup memory applications |
| Data Retention VCC | 2.0 V min; retains contents during brown-out or battery-swapping without external capacitor hold-up |
| Operating Temp | 0 to +70°C; qualified for commercial-grade embedded systems including POS terminals and medical monitors |
| I/O Compatibility | TTL-compatible inputs/outputs; interfaces directly with 5 V-tolerant or 3.3 V microcontrollers without level shifters |
Pinout & Package
Package: 32-pin sTSOP (8 mm × 13.4 mm, normal-bend type), JEDEC standard PTSA0032KB-A footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address input | 17-bit address bus supporting full 128k-word decoding; A16 enables 1-Mb addressing |
| DQ0–DQ7 | Bi-directional data I/O | Common data bus with three-state outputs; supports OR-tie for shared-bus configurations |
| CS1#, CS2 | Chip select inputs | Dual-select architecture allows interleaved or stacked memory expansion up to 2 MB using same control logic |
| WE# | Write enable | Active-low write strobe; initiates write on falling edge when CS1# low and CS2 high |
| OE# | Output enable | Controls output buffer state; prevents bus contention during read cycles or multi-device sharing |
| Vcc, Vss | Power and ground | Single-supply operation; decoupling required per JEDEC sTSOP layout guidelines for signal integrity |
| NC | No connect | Pin 1 (NC) must remain unconnected; no internal connection or function |
Key Features
| Feature | Design Value |
|---|---|
| No refresh / no clock required | Eliminates system-level timing constraints and reduces firmware overhead for memory management |
| 0.6 µA standby current (typ.) | Enables >5-year operation on coin-cell batteries in tamper-evident logging or RTC backup applications |
| Dual chip select (CS1#, CS2) | Supports direct 2× memory expansion without address decoder ICs or glue logic |
| TTL-compatible I/O | Direct interface with legacy 8051, Z80, and ARM7-based controllers without level translation |
| 2.0 V data retention | Maintains stored configuration or calibration data during power interruption down to critical brown-out thresholds |
Applications
| Industrial PLC Data Buffer | Medical Device Parameter Storage |
|---|---|
Use Scenario: Storing real-time I/O status and fault logs in programmable logic controllers during mains failure. IC Role / Device Role / Timing Role: Non-volatile backup SRAM holding last-known state until power restoration. Use Value: 0.6 µA standby current and 2.0 V data retention ensure >72-hour retention on supercapacitor hold-up. | Use Scenario: Preserving calibration coefficients and patient settings in portable ultrasound units between sessions. IC Role / Device Role / Timing Role: Battery-backed memory retaining critical configuration across power cycles. Use Value: TTL-compatible I/O and 70 ns access integrate seamlessly with existing 8-bit MCU buses without redesign. |
| POS Terminal Transaction Log | Automotive Infotainment Settings |
Use Scenario: Caching transaction records in retail point-of-sale terminals during network outages. IC Role / Device Role / Timing Role: High-reliability temporary storage with deterministic 70 ns read/write timing. Use Value: Dual chip select enables parallel log partitioning (e.g., active/inactive banks) without external demux. | Use Scenario: Storing user preferences and radio presets in automotive head units with intermittent ignition power. IC Role / Device Role / Timing Role: Low-voltage SRAM maintaining settings during stop-start engine cycles. Use Value: 2.7–3.6 V operation tolerates vehicle battery sag (down to ~2.8 V) without data loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV10248AL-70TQLI | 70 ns access, 32-pin TSOP-II, 2.7–3.6 V, but 1.5 µA typical standby current (2.5× higher than R1LV0108ESA-7SR#B0) | Same pinout and voltage range; higher standby current limits battery lifetime in always-on designs | Select when TSOP-II footprint is mandated and standby current <1 µA is not critical |
| AS6C1008-70SCN | 70 ns access, 32-pin SOP, 2.7–3.6 V, 1.0 µA typical standby current; lacks CS2 pin (single chip select only) | Requires external logic for memory expansion beyond 1 MB; incompatible with dual-CS expansion schemes | Select for cost-sensitive SOP-based designs where expansion simplicity is secondary to BOM count |
Compared with IS61LV10248AL-70TQLI and AS6C1008-70SCN, the R1LV0108ESA-7SR#B0 delivers the lowest standby current and native dual-chip-select support-making it optimal for battery-constrained, expandable memory subsystems where long-term data retention and bus simplicity are prioritized.
Availability
R1LV0108ESA-7SR#B0 is available at Aetrix Electronics and suitable for industrial PLC data buffering, medical device parameter storage, and POS terminal transaction logging requiring stable component supply and long-lifecycle availability.
Supply support for R1LV0108ESA-7SR#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 is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and memory solutions for industrial, automotive, and enterprise applications.
The R1LV0108E Series was designed specifically for low-voltage, low-power static RAM applications in battery-operated and battery-backup systems where reliability, simplicity, and extended data retention are essential.
FAQ
What is the maximum operating temperature range for the R1LV0108ESA-7SR#B0?
The R1LV0108ESA-7SR#B0 is rated for 0 to +70°C ambient operation (R-version). This specification is confirmed in the Ordering Information table on page 2 of the R10DS0152EJ0100 datasheet, where "R" denotes the commercial temperature grade. Operation outside this range may result in parametric degradation or data loss.
Does the R1LV0108ESA-7SR#B0 require an external clock or refresh signal?
No, the R1LV0108ESA-7SR#B0 is a fully static RAM and requires neither an external clock nor periodic refresh cycles. As stated in the Features section (page 1), it operates asynchronously using only control signals (CS1#, CS2, WE#, OE#) and address/data lines-eliminating timing-critical clock tree design and firmware overhead.
What package type does the R1LV0108ESA-7SR#B0 use, and is it RoHS compliant?
The R1LV0108ESA-7SR#B0 uses an 8 mm × 13.4 mm 32-pin plastic sTSOP (normal-bend type), part number PTSA0032KB-A. Per Renesas' environmental compliance statement on page 12, all R1LV0108E Series devices meet EU RoHS Directive requirements, with lead-free terminations and halogen-free molding compounds.
Can the R1LV0108ESA-7SR#B0 retain data at voltages below 2.7 V?
Yes-the R1LV0108ESA-7SR#B0 guarantees data retention down to 2.0 V, as specified in the Low Vcc Data Retention Characteristics table (page 12). This capability is enabled by two retention modes: CS2-controlled (CS2 ≤ 0.2 V) or CS1#-controlled (CS1# ≥ Vcc − 0.2 V), allowing robust operation during brown-out conditions.
How many address pins does the R1LV0108ESA-7SR#B0 have, and what memory depth do they support?
The R1LV0108ESA-7SR#B0 has 17 address pins (A0 through A16), supporting a 131,072-word (128k) address space. This matches its 1 Mb (128k × 8-bit) organization exactly, as confirmed in the Description (page 1) and Pin Arrangement (page 3) sections of the datasheet.
R1LV0108ESA-7SR#B0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-TFSOP (0.465", 11.80mm Width)
- Packaging:
- Bulk
- 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:
- 2.7V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP I
R1LV0108ESA-7SR#B0 FAQ
1.How can I place an order for R1LV0108ESA-7SR#B0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LV0108ESA-7SR#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 R1LV0108ESA-7SR#B0 reliable?
The price and inventory of R1LV0108ESA-7SR#B0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LV0108ESA-7SR#B0 is usually 5 days.
3.What payment methods are accepted for R1LV0108ESA-7SR#B0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LV0108ESA-7SR#B0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LV0108ESA-7SR#B0?
R1LV0108ESA-7SR#B0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LV0108ESA-7SR#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 R1LV0108ESA-7SR#B0?
For technical support, including R1LV0108ESA-7SR#B0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LV0108ESA-7SR#B0 requirements.
6.How does Aetrix verify that R1LV0108ESA-7SR#B0 is sourced from the original manufacturer or authorized distributors?
All R1LV0108ESA-7SR#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 R1LV0108ESA-7SR#B0 meets industry standards.
7.What is the process for return or replacement of R1LV0108ESA-7SR#B0?
All R1LV0108ESA-7SR#B0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LV0108ESA-7SR#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 R1LV0108ESA-7SR#B0 part is unused and in its original packaging.
Return procedure for R1LV0108ESA-7SR#B0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LV0108ESA-7SR#B0 Tags
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