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Renesas R1LV0208BSA-5SR#B0
- Part No.:
- R1LV0208BSA-5SR#B0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- -
- Datasheet:
-
R1LV0208BSA-5SR#B0.pdf
- Description:
- STANDARD SRAM, 256KX8, 55NS
- Quantity:
- Payment:
- Shipping:
Inventory:1,106
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Product details
Overview
R1LV0208BSA-5SR#B0 from Renesas Electronics is a 2Mb low-power static RAM organized as 262,144 × 8-bit, fabricated in 0.15µm CMOS/TFT process, operating from a single 2.7–3.6V supply with 55ns access time and 1µA typical standby current at 3.0V. It serves as non-volatile memory backup buffer in battery-powered instrumentation and embedded control systems requiring zero-refresh operation and TTL-compatible interfacing.
For engineers reviewing the R1LV0208BSA-5SR#B0 datasheet, R1LV0208BSA-5SR#B0 pinout, R1LV0208BSA-5SR#B0 application, or R1LV0208BSA-5SR#B0 equivalent, key selection criteria include its sTSOP-32 package, dual chip select architecture (CS1#/CS2), common I/O bus, three-state output capability, and data retention down to 2.0V Vcc.
Technical Context
The R1LV0208BSA-5SR#B0 implements a fully static memory array with no internal clocks or refresh circuitry, relying on external address latching and control timing. Its dual chip select (CS1# active-low, CS2 active-high) enables hierarchical memory expansion without additional logic, while OE# and WE# provide independent read/write bus control.
It uses standard TTL-level input thresholds (VIH ≥ 2.0V, VIL ≤ 0.6V) and delivers VOH ≥ 2.4V at –0.5mA and VOL ≤ 0.4V at 2mA, ensuring robust interoperability with legacy microcontrollers and FPGAs. Data retention mode is activated by either CS2 ≤ 0.2V or CS1# ≥ Vcc–0.2V with CS2 ≥ Vcc–0.2V, drawing ≤10µA at +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 262,144 × 8-bit (2Mb); supports byte-wide data transfers without width conversion logic |
| Access time | 55 ns max; enables direct interface with 12–15 MHz microcontroller buses without wait states |
| Supply voltage | 2.7–3.6 V; compatible with Li-ion battery (3.0–3.6V) and regulated 3.3V rails |
| Standby current | ≤0.33 mA max (full temp range); ≤1 µA typical at 3.0V/25°C for ultra-low-power sleep modes |
| Data retention Vcc | 2.0–3.6 V; retains contents during brown-out or battery switchover without external backup capacitor |
| Operating temperature | 0 to +70°C; qualified for commercial and industrial ambient environments |
| Input capacitance | ≤8 pF; minimizes loading on address/data buses and reduces signal integrity risk |
Pinout & Package
Package: 32-pin plastic sTSOP (8mm × 13.4mm, normal-bend type, PTSA0032KB-A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Vcc | Power supply | Primary 2.7–3.6V supply rail; requires local 0.1µF ceramic decoupling |
| Vss | Ground | Digital ground reference; must be connected to system GND plane |
| A0–A17 | Address inputs | 18-bit address bus supporting full 256k-word decoding; A11–A17 used for row selection |
| DQ0–DQ7 | Data I/O | Bi-directional 8-bit data bus with three-state outputs; supports OR-tie for shared bus architectures |
| CS1# | Chip select 1 | Active-low primary enable; must be low with CS2 high for valid read/write cycles |
| CS2 | Chip select 2 | Active-high secondary enable; controls address and I/O buffers; enables data retention when ≤0.2V |
| WE# | Write enable | Active-low write strobe; initiates write on falling edge synchronized with CS1#/CS2 |
| OE# | Output enable | Active-low read strobe; gates DQ outputs to prevent bus contention during idle or write cycles |
Key Features
| Feature | Design Value |
|---|---|
| No refresh required | Eliminates refresh controller overhead and timing constraints in microcontroller-based systems |
| TTL-compatible I/O | Direct connection to legacy 5V-tolerant or 3.3V microcontrollers without level-shifting |
| Dual chip select (CS1#/CS2) | Enables seamless memory banking and expansion using only two control lines |
| Three-state outputs with OR-tie | Allows multiple R1LV0208BSA-5SR#B0 devices on same data bus without external bus transceivers |
| Low-voltage data retention | Maintains stored data down to 2.0V Vcc, supporting graceful power-fail response in portable equipment |
Applications
| Portable Medical Monitor | Industrial PLC I/O Buffer |
|---|---|
Use Scenario: Battery-backed ECG waveform capture and temporary storage between wireless transmission bursts. IC Role / Device Role / Timing Role: Non-volatile SRAM buffer holding up to 32 seconds of sampled data at 1ksps, accessed via 8-bit parallel bus. Use Value: Zero-refresh operation extends battery life; 1µA standby current enables >1-year shelf life in sleep mode. | Use Scenario: Real-time logging of sensor status and actuator commands in modular PLC backplane modules. IC Role / Device Role / Timing Role: Local fast-access memory for firmware state variables and I/O image mirroring, interfaced to ARM Cortex-M4 MCU. Use Value: 55ns access time eliminates wait states; dual CS pins simplify multi-module address decoding. |
| Smart Energy Meter | Automotive Diagnostic Tool |
Use Scenario: Storing tariff schedules, billing history, and tamper-event logs during mains power interruption. IC Role / Device Role / Timing Role: Backup memory retaining critical metering data when AC power drops below 2.0V. Use Value: Guaranteed data retention at 2.0V Vcc allows use of small hold-up capacitors instead of supercapacitors. | Use Scenario: On-device fault code caching and diagnostic session history in handheld OBD-II scanners. IC Role / Device Role / Timing Role: Byte-addressable scratchpad for ISO 15765-2 message buffering and CAN ID filtering tables. Use Value: Common DQ bus and OE#/WE# control reduce PCB trace count; sTSOP-32 footprint fits compact handheld form factor. |
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 |
|---|---|---|---|
| IS61LV25616AL-10TLI | 256K × 16-bit, 10ns access, 3.3V only, SOJ-44 package | Wider data bus; faster but higher power; incompatible pinout and density | Select only if 16-bit interface and sub-10ns timing are required; board redesign needed |
| AS6C4008-55PCN | 512K × 8-bit, 55ns access, 2.7–3.6V, SOP-32 package | Double capacity; same speed and voltage; SOP-32 vs sTSOP-32 footprint differs (1.27mm vs 0.5mm pitch) | Drop-in replacement only with PCB pad revision; identical timing and control logic |
Compared with IS61LV25616AL-10TLI and AS6C4008-55PCN, the R1LV0208BSA-5SR#B0 offers optimal balance of 2Mb density, 55ns speed, ultra-low standby current, and sTSOP-32 footprint-making it preferred for space-constrained, battery-sensitive designs where 8-bit bus width suffices.
Availability
R1LV0208BSA-5SR#B0 is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC I/O buffers, and smart energy meters requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for R1LV0208BSA-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, power, and memory solutions for industrial, automotive, and infrastructure markets.
The R1LV0208BSA series was designed as low-voltage, low-power parallel SRAM for battery-operated and energy-conscious embedded systems where simplicity, reliability, and data retention under brown-out conditions are critical.
FAQ
What is the maximum operating temperature range for the R1LV0208BSA-5SR#B0?
The R1LV0208BSA-5SR#B0 is rated for operation from 0°C to +70°C (R-version). This specification is confirmed in the Ordering Information table on page 1 of the R10DS0050EJ0100 datasheet. The device is not qualified for extended industrial temperature ranges (–40°C to +85°C), which apply only to variants ending in "I" such as R1LV0208BSA-5SI#B0. Thermal derating is not supported beyond this range.
Does the R1LV0208BSA-5SR#B0 require an external clock or refresh signal?
No, the R1LV0208BSA-5SR#B0 is a fully static RAM and requires no external clock or refresh signal. Its operation relies solely on address, data, and control signals (CS1#, CS2, WE#, OE#). This is explicitly stated in the Features section ("No clocks, No refresh") and confirmed by the block diagram showing no clock generator feeding the memory array. The R1LV0208BSA-5SR#B0 maintains data indefinitely as long as Vcc remains within specification and appropriate control timing is observed.
What is the minimum supply voltage at which the R1LV0208BSA-5SR#B0 retains stored data?
The R1LV0208BSA-5SR#B0 guarantees data retention down to 2.0V Vcc, as specified in the Low Vcc Data Retention Characteristics table (page 12). This applies when either CS2 ≤ 0.2V or CS1# ≥ Vcc–0.2V with CS2 ≥ Vcc–0.2V. At 2.0V, retention current is ≤10µA at +85°C. Below 2.0V, data loss may occur regardless of control pin states.
Can the R1LV0208BSA-5SR#B0 be used with a 5V microcontroller system?
The R1LV0208BSA-5SR#B0 has TTL-compatible inputs (VIH ≥ 2.0V, VIL ≤ 0.6V), so it accepts 5V logic-high signals safely. However, its outputs are not 5V-tolerant: VOH is specified as ≥2.4V at –0.5mA (not 5V), and absolute maximum Vcc is +4.6V. Direct connection to a 5V bus risks overvoltage damage unless level translation or open-drain pull-ups are used. For mixed-voltage systems, interface buffers or voltage translators are recommended.
What package type does the R1LV0208BSA-5SR#B0 use, and is it lead-free?
The R1LV0208BSA-5SR#B0 uses a 32-pin plastic sTSOP (thin shrink small outline package) with dimensions 8mm × 13.4mm and normal-bend leads (package code PTSA0032KB-A). Per Renesas' environmental compliance documentation referenced in the datasheet colophon, the device is RoHS-compliant and lead-free, meeting EU Directive 2011/65/EU requirements. The "#B0" suffix denotes tray packaging; "#S0" denotes tape-and-reel.
R1LV0208BSA-5SR#B0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- -
- Memory Format:
- -
- Technology:
- -
- Memory Size:
- -
- Memory Organization:
- -
- Memory Interface:
- -
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
R1LV0208BSA-5SR#B0 FAQ
1.How can I place an order for R1LV0208BSA-5SR#B0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LV0208BSA-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 R1LV0208BSA-5SR#B0 reliable?
The price and inventory of R1LV0208BSA-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 R1LV0208BSA-5SR#B0 is usually 5 days.
3.What payment methods are accepted for R1LV0208BSA-5SR#B0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LV0208BSA-5SR#B0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LV0208BSA-5SR#B0?
R1LV0208BSA-5SR#B0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LV0208BSA-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 R1LV0208BSA-5SR#B0?
For technical support, including R1LV0208BSA-5SR#B0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LV0208BSA-5SR#B0 requirements.
6.How does Aetrix verify that R1LV0208BSA-5SR#B0 is sourced from the original manufacturer or authorized distributors?
All R1LV0208BSA-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 R1LV0208BSA-5SR#B0 meets industry standards.
7.What is the process for return or replacement of R1LV0208BSA-5SR#B0?
All R1LV0208BSA-5SR#B0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LV0208BSA-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 R1LV0208BSA-5SR#B0 part is unused and in its original packaging.
Return procedure for R1LV0208BSA-5SR#B0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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