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Renesas R1LV0816ASA-5SI#S0
- Part No.:
- R1LV0816ASA-5SI#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
R1LV0816ASA-5SI#S0.pdf
- Description:
- IC SRAM 8MBIT PARALLEL 48TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:4,736
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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, operating from a single 2.4–3.6V supply with 55ns access time, TTL-compatible I/O, and no refresh requirement-designed for battery-backed memory in portable instrumentation and industrial 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 1.5V, and real-world substitution guidance for legacy LPSRAM designs.
Technical Context
The R1LV0816ASA-5SI implements a dual-mode memory architecture supporting both word (16-bit) and byte (8-bit) addressing via BYTE# control, with independent LB#/UB# enables for selective upper/lower byte writes. Its internal address decoder supports A-1 to A18 inputs, enabling 512k-word × 16-bit or 1M-word × 8-bit configurations without external logic.
It uses Renesas' 0.15μm CMOS/TFT process to achieve 1.2μA typical standby current at 3.0V and 25°C, and supports three data retention modes controlled by CS1#, CS2, or LB#/UB#-each requiring specific voltage thresholds and timing (tCDR = 0ns, tR = 5ms). All control signals (CS1#, WE#, OE#, LB#, UB#) are active-low and TTL-compatible.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 8 Mbit (524,288 × 16-bit or 1,048,576 × 8-bit) - enables flexible data bus width selection in microcontroller-based systems |
| Supply voltage | 2.4–3.6 V - compatible with 2.5V and 3.3V logic domains; supports battery backup down to 1.5V for data retention |
| Access time | 55 ns (max) - meets timing requirements for 18 MHz bus interfaces in embedded controllers |
| Standby current | 1.2 μA typ. at 3.0V/25°C - extends battery life in always-on monitoring devices |
| Operating temperature | −40°C to +85°C - qualified for industrial-grade deployment in factory automation and outdoor telemetry |
| Package | 48-pin TSOP-I (12 mm × 20 mm, 0.5 mm pitch) - surface-mount compatible with standard reflow profiles and high-density PCB layouts |
| Data retention voltage | 1.5–3.6 V - maintains stored data during brown-out or battery-switchover without external capacitor hold-up |
Pinout & Package
48-pin plastic 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; pin numbering follows standard counter-clockwise layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address input (word mode) | 19-bit address bus supporting 524,288-word space; A-1 used only in byte mode for 8-bit access |
| DQ0–DQ15 | Data input/output | Bi-directional 16-bit data bus with three-state outputs; OR-tie capable for bus sharing |
| CS1#, CS2 | Chip select inputs | Two-level chip enable: CS1# active-low primary select; CS2 enables address buffers and controls retention mode |
| WE#, OE#, LB#, UB# | Control inputs | Active-low write enable, output enable, and byte-lane enables - support partial-word writes without read-modify-write |
| BYTE# | Mode configuration | High = word mode (16-bit DQ); Low = byte mode (8-bit DQ with A-1 address extension) |
| Vcc, Vss | Power and ground | Single 2.4–3.6V supply; decoupling required per JEDEC TSOP-I guidelines for noise immunity |
| NC | No connection | Pins 9, 10, 13 are unconnected - must be left floating or tied to Vss per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| No refresh required | True static RAM architecture eliminates DRAM-style refresh circuitry and timing overhead in MCU firmware |
| Low-voltage data retention | Maintains valid data at Vcc ≥ 1.5V - enables seamless transition to backup power without data loss |
| TTL-compatible I/O | VIH = 2.2V min (2.4–2.7V supply), VOH = 2.4V min - interoperable with legacy 5V-tolerant microcontrollers via level-shifting |
| Byte/word mode flexibility | Configurable via BYTE# pin - allows same footprint to serve 8-bit or 16-bit host buses without redesign |
| Three-state OR-tie outputs | Enables direct connection of multiple R1LV0816ASA-5SI devices to shared data bus without external bus transceivers |
Applications
| Portable Medical Monitor | Industrial PLC Data Logger |
|---|---|
|
Use Scenario: Battery-powered ECG monitor storing waveform snapshots during intermittent wireless transmission. IC Role / Device Role / Timing Role: Non-volatile buffer memory holding up to 8Mbit of digitized analog samples between host reads. Use Value: 1.2μA standby current extends battery life to >6 months; 55ns access enables real-time capture at 18ksps without DMA bottlenecks. |
Use Scenario: DIN-rail mounted controller logging sensor values every 100ms into circular buffer during mains outage. IC Role / Device Role / Timing Role: Primary working memory retaining critical state and timestamped readings during brown-out events. Use Value: Data retention down to 1.5V ensures zero data loss across 200ms power gaps; −40°C to +85°C rating supports unheated cabinet deployment. |
| Automotive Diagnostic Tool | Point-of-Sale Terminal |
|
Use Scenario: Handheld OBD-II scanner caching fault codes and live PID streams for offline analysis. IC Role / Device Role / Timing Role: High-speed scratchpad memory interfacing directly with ARM Cortex-M4 host via 16-bit parallel bus. Use Value: 524,288 × 16-bit organization matches 32-bit MCU word alignment; TSOP-48 footprint minimizes board area vs. SOIC alternatives. |
Use Scenario: Retail terminal buffering transaction records during intermittent GPRS connectivity outages. IC Role / Device Role / Timing Role: Dual-port accessible memory allowing simultaneous host write and background upload engine read. Use Value: LB#/UB# enables concurrent update of receipt header (upper byte) and line items (lower byte) without bus contention. |
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 | 4Mb density (256k × 16), 55ns access, 3.3V-only supply (3.0–3.6V), 25μA standby current | Lacks byte-mode operation and sub-2V data retention; requires tighter voltage regulation | Select when system uses only 3.3V rails and needs lower cost per bit at reduced capacity |
| IS61LV51216AL-10TLI | 8Mb density, 10ns access, 3.3V supply, 30μA standby, 44-pin TSOP-II package | Faster but higher power; incompatible pinout and no BYTE#-controlled mode switching | Choose for performance-critical applications where 10ns latency justifies 25× higher standby draw and PCB redesign |
Compared with CY62167EV30LL-55ZSXI and IS61LV51216AL-10TLI, the R1LV0816ASA-5SI uniquely balances ultra-low standby (1.2μA), wide voltage range (2.4–3.6V), and configurable byte/word interface - making it irreplaceable in battery-constrained, multi-voltage industrial designs requiring field-proven reliability.
Availability
R1LV0816ASA-5SI is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC data loggers, automotive diagnostic tools, and point-of-sale terminals 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, engineered specifically for battery-operated and low-power embedded systems where data integrity during voltage transients and minimal quiescent current are critical design requirements.
FAQ
What is the minimum supply voltage required for data retention in R1LV0816ASA-5SI?
The R1LV0816ASA-5SI guarantees data retention down to 1.5V, as specified in its DC Characteristics table. At Vcc = 1.5V, the device enters retention mode when CS2 ≤ 0.2V or CS1# ≥ VCC−0.2V, drawing ≤20μA at +85°C. This enables reliable operation during battery switchover or brown-out conditions without external backup capacitors.
Does R1LV0816ASA-5SI support true 8-bit data bus operation?
Yes. When BYTE# is driven low, the R1LV0816ASA-5SI operates in byte mode: DQ0–DQ7 become active for 8-bit transfers, while A-1 serves as the LSB of the address bus to extend capacity to 1M × 8-bit. LB# and UB# must both be asserted low in this mode, as confirmed in the Operation Table on page 5 of the datasheet.
What is the maximum clock frequency supported by R1LV0816ASA-5SI?
The R1LV0816ASA-5SI is a static RAM and does not use a clock signal. Its timing is governed by asynchronous control signals (CS1#, WE#, OE#, LB#, UB#). With a 55ns access time, it supports bus cycles up to approximately 18 MHz (1/55ns), assuming sufficient setup/hold margins for address and control propagation delays in the host system.
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. It is approved for use in automotive infotainment and diagnostics tools-not safety-critical powertrain or ADAS systems. For AEC-Q100 qualified alternatives, consult Renesas' automotive memory portfolio separately.
How does the R1LV0816ASA-5SI handle bus contention during read/write transitions?
The R1LV0816ASA-5SI prevents bus contention using OE#-controlled three-state outputs and separate LB#/UB# enables. During write cycles, DQ lines enter high-impedance unless LB# or UB# is active; during reads, OE# must be low to enable outputs. The Operation Table (page 5) confirms that DQ remains Hi-Z when OE# = VIH or LB#/UB# are inactive - eliminating need for external bus transceivers.
R1LV0816ASA-5SI#S0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-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:
- 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#S0 FAQ
1.How can I place an order for R1LV0816ASA-5SI#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LV0816ASA-5SI#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 R1LV0816ASA-5SI#S0 reliable?
The price and inventory of R1LV0816ASA-5SI#S0 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#S0 is usually 5 days.
3.What payment methods are accepted for R1LV0816ASA-5SI#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LV0816ASA-5SI#S0 transactions.
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4.How is shipping managed for R1LV0816ASA-5SI#S0?
R1LV0816ASA-5SI#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LV0816ASA-5SI#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 R1LV0816ASA-5SI#S0?
For technical support, including R1LV0816ASA-5SI#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LV0816ASA-5SI#S0 requirements.
6.How does Aetrix verify that R1LV0816ASA-5SI#S0 is sourced from the original manufacturer or authorized distributors?
All R1LV0816ASA-5SI#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 R1LV0816ASA-5SI#S0 meets industry standards.
7.What is the process for return or replacement of R1LV0816ASA-5SI#S0?
All R1LV0816ASA-5SI#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LV0816ASA-5SI#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 R1LV0816ASA-5SI#S0 part is unused and in its original packaging.
Return procedure for R1LV0816ASA-5SI#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LV0816ASA-5SI#S0 Tags
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M24C02-WMN6TP
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