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Renesas R1LV0816ASA-5SI#B0
- Part No.:
- R1LV0816ASA-5SI#B0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
R1LV0816ASA-5SI#B0.pdf
- Description:
- IC SRAM 8MBIT PARALLEL 48TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:4,896
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Product details
Overview
R1LV0816ASA-5SI from Renesas Electronics is an 8Mb low-power static RAM organized as 524,288 × 16-bit or 1M × 8-bit, fabricated in 0.15μm CMOS/TFT process, operating from a single 2.4–3.6V supply with 55ns access time and −40°C to +85°C industrial temperature range - used for battery-backed memory in portable instrumentation and embedded control systems.
For engineers reviewing the R1LV0816ASA-5SI datasheet, R1LV0816ASA-5SI pinout, R1LV0816ASA-5SI application, or R1LV0816ASA-5SI equivalent, this page delivers verified electrical specs, TSOP-48 pin mapping, byte/word mode operation details, data retention behavior at low VCC, and real-world substitution guidance for legacy LPSRAM designs.
Technical Context
The R1LV0816ASA-5SI implements dual-mode addressing (A−1 to A18 for byte mode; A0 to A18 for word mode) with independent LB#/UB# controls and BYTE#-gated mode selection. Its architecture supports OR-tie bus sharing via three-state outputs and eliminates refresh overhead through true static operation.
It features TTL-compatible I/Os, no clock requirement, and selectable data retention down to 1.5V VCC with standby current as low as 1.2μA at +25°C. Chip select logic uses CS1# active-low and CS2 active-high for flexible hierarchical memory mapping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Mbit (524,288 × 16 or 1,048,576 × 8) - enables compact code/data storage without external multiplexing |
| Supply voltage | 2.4–3.6 V - compatible with Li-ion battery discharge profile and 3.3V system rails |
| Access time | 55 ns - meets timing requirements for 16-bit microcontroller interfaces running ≤18 MHz |
| Standby current | 1.2 μA at VCC = 3.0 V, +25°C - extends battery life in always-on backup memory applications |
| Operating temperature | −40°C to +85°C - qualified for industrial-grade embedded controllers and automotive body electronics |
| Data retention VCC | 1.5–3.6 V - preserves contents during brown-out or battery-swapping without external capacitor hold-up |
| Package | 48-pin TSOP-I (12 mm × 20 mm, 0.5 mm pitch) - surface-mount compatible with high-density PCB layouts |
Pinout & Package
48-pin thin small outline package (TSOP-I), 12 mm × 20 mm body, 0.50 mm pin pitch, normal-bend leads. Pin 1 marked by notch or dot; pins numbered counterclockwise from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address input (word mode) | 19-bit address bus for 524k-word × 16-bit configuration |
| A−1–A18 | Address input (byte mode) | A−1 enables 8-bit addressing; A0–A18 map to 1M × 8-bit space |
| DQ0–DQ15 | Data I/O bidirectional | Common bus interface; three-state controlled by OE#, LB#, UB# |
| CS1#, CS2 | Chip select inputs | CS1# active-low + CS2 active-high enable hierarchical decoding; both required for access |
| WE#, OE#, LB#, UB#, BYTE# | Control inputs | WE# initiates write; OE# enables read output; LB#/UB# select byte lanes; BYTE# configures mode |
| Vcc, Vss | Power and ground | Single 2.4–3.6V supply; decoupling required per JEDEC TSOP layout guidelines |
| NC | No connect | Pins 9, 10, 12, 13 are unconnected - must be left floating or tied to Vss per design rules |
Key Features
| Feature | Design Value |
|---|---|
| No refresh required | True static RAM architecture eliminates DRAM-style refresh circuitry and timing constraints |
| Low-voltage data retention | Maintains stored data down to 1.5V VCC - supports seamless transition during power failover |
| Byte/word mode flexibility | Configurable via BYTE# pin to operate as either 1M×8 or 524k×16 - simplifies migration across MCU data bus widths |
| TTL-compatible I/O | VIH/VIL thresholds meet standard TTL levels - interoperable with legacy 5V-tolerant microcontrollers at 3.3V |
| OR-tie bus capability | Three-state outputs allow direct connection of multiple devices to shared data bus without external logic |
Applications
| Portable Medical Monitor | Industrial PLC HMI |
|---|---|
|
Use Scenario: Battery-powered ECG monitor storing waveform buffers and calibration tables during AC power loss. IC Role / Device Role / Timing Role: Nonvolatile backup memory holding real-time patient data with zero-refresh operation and sub-μA standby draw. Use Value: Enables >72-hour data retention on coin-cell backup without external supervisor IC or capacitor bank. |
Use Scenario: Human-machine interface module in factory automation panel requiring fast local UI state caching. IC Role / Device Role / Timing Role: High-speed SRAM interfaced directly to ARM9-based controller for GUI frame buffer and command queue. Use Value: 55ns access time supports 18 MHz bus clock; TSOP-48 footprint allows dense layout in space-constrained front-panel PCBs. |
| Automotive Body Control Unit | Networked Smart Meter |
|
Use Scenario: Door module storing user preferences, error logs, and CAN message history across ignition cycles. IC Role / Device Role / Timing Role: Industrial-temp SRAM retaining configuration data during vehicle sleep mode (VCC ≥ 1.5V). Use Value: Data retention at 1.5V VCC eliminates need for separate EEPROM writes during power-down sequences. |
Use Scenario: AMI smart meter maintaining time-synced consumption records during grid outages. IC Role / Device Role / Timing Role: Low-power memory preserving 15-minute interval data in battery-backed mode for >10 years. Use Value: 1.2μA typical standby current at +25°C extends primary lithium battery life beyond regulatory 10-year field lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62167EV30LL-55ZSXI | 64-Mbit (4M×16), 55ns, 2.2–3.6V, 48-pin TSOP-I - higher density but larger die and 3.5× higher ISB (4.2μA) | Used where extended memory capacity justifies increased standby power and cost | Select only if >8Mb capacity is required and system can accommodate higher quiescent draw |
| IS61LV25616AL-10TLI | 4-Mbit (256k×16), 10ns, 3.3V only, 44-pin SOJ - faster but narrower voltage range and obsolete packaging | Legacy board refresh where speed >55ns is mandatory and 3.3V rail is stable | Choose only for drop-in replacement on existing SOJ footprints; not suitable for battery-backed or wide-VCC designs |
Compared with CY62167EV30LL-55ZSXI and IS61LV25616AL-10TLI, the R1LV0816ASA-5SI uniquely balances ultra-low standby current, wide 2.4–3.6V operation, and industrial temperature support - making it optimal for energy-constrained, long-life embedded systems where 8Mb is sufficient.
Availability
R1LV0816ASA-5SI is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC HMIs, automotive body control units, and networked smart meters requiring stable component supply across extended product lifecycles.
Supply support for R1LV0816ASA-5SI 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 global semiconductor leader specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and infrastructure markets.
The R1LV0816ASA-5SI belongs to Renesas' Advanced LPSRAM family, designed specifically for battery-operated and low-power memory applications where simplicity, reliability, and minimal external support circuitry are critical.
FAQ
What is the minimum VCC required for data retention in R1LV0816ASA-5SI?
The R1LV0816ASA-5SI retains stored data down to 1.5V VCC under specified conditions (BYTE# ≥ VCC−0.2V or ≤0.2V, CS2 ≤0.2V or CS1# ≥ VCC−0.2V). This enables reliable operation during brown-out events or battery discharge below nominal voltage, eliminating the need for external retention capacitors in many designs. The R1LV0816ASA-5SI achieves this while drawing only 1.2μA standby current at 3.0V and +25°C.
Does R1LV0816ASA-5SI support both 8-bit and 16-bit data bus configurations?
Yes, the R1LV0816ASA-5SI supports dual organization: 524,288 words × 16 bits (using A0–A18) or 1,048,576 words × 8 bits (using A−1–A18), selected by the BYTE# pin. When BYTE# is low, LB# and UB# must both be active for byte-mode operation. This flexibility allows the R1LV0816ASA-5SI to interface seamlessly with 8-bit or 16-bit microcontrollers without external glue logic.
What is the meaning of CS1# and CS2 signals in R1LV0816ASA-5SI operation?
In the R1LV0816ASA-5SI, CS1# (active-low) and CS2 (active-high) form a two-signal chip select pair: both must be asserted simultaneously (CS1# = L, CS2 = H) for the device to respond to address and control inputs. This dual-signal scheme prevents spurious activation during power-up or noise transients. The R1LV0816ASA-5SI ignores all control signals when either CS1# or CS2 is deasserted, entering standby mode with ISB ≤ 0.3mA.
Can R1LV0816ASA-5SI be used in automotive applications?
The R1LV0816ASA-5SI is rated for −40°C to +85°C operation and classified as "Standard" grade per Renesas quality policy, making it suitable for non-safety-critical automotive applications such as body control modules, infotainment UI caches, or gateway log buffers. It is not qualified for safety-critical systems (e.g., airbag controllers or ADAS ECUs); for those, Renesas' "High Quality" or "Specific" grade parts must be selected. The R1LV0816ASA-5SI's 1.5V data retention and low ISB support robust operation in automotive sleep modes.
How does the R1LV0816ASA-5SI handle output contention on shared data buses?
The R1LV0816ASA-5SI prevents output contention using OE# (output enable) and three-state drivers: when OE# is high, all DQ lines enter high-impedance state regardless of CS1#/CS2 status. Additionally, LB# and UB# independently gate lower and upper byte lanes, allowing partial bus driving. This ensures safe OR-tie bus sharing - multiple R1LV0816ASA-5SI devices can drive the same DQ0–DQ15 lines without external bus transceivers, provided only one has OE# low and matching LB#/UB# asserted.
R1LV0816ASA-5SI#B0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM
- Memory Size:
- 8Mbit
- Memory Organization:
- 1M x 8, 512K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP I
R1LV0816ASA-5SI#B0 FAQ
1.How can I place an order for R1LV0816ASA-5SI#B0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LV0816ASA-5SI#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 R1LV0816ASA-5SI#B0 reliable?
The price and inventory of R1LV0816ASA-5SI#B0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LV0816ASA-5SI#B0 is usually 5 days.
3.What payment methods are accepted for R1LV0816ASA-5SI#B0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LV0816ASA-5SI#B0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LV0816ASA-5SI#B0?
R1LV0816ASA-5SI#B0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LV0816ASA-5SI#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 R1LV0816ASA-5SI#B0?
For technical support, including R1LV0816ASA-5SI#B0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LV0816ASA-5SI#B0 requirements.
6.How does Aetrix verify that R1LV0816ASA-5SI#B0 is sourced from the original manufacturer or authorized distributors?
All R1LV0816ASA-5SI#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 R1LV0816ASA-5SI#B0 meets industry standards.
7.What is the process for return or replacement of R1LV0816ASA-5SI#B0?
All R1LV0816ASA-5SI#B0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LV0816ASA-5SI#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 R1LV0816ASA-5SI#B0 part is unused and in its original packaging.
Return procedure for R1LV0816ASA-5SI#B0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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