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Renesas RMLV0408EGSB-4S2#AA1
- Part No.:
- RMLV0408EGSB-4S2#AA1
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-SOIC (0.400", 10.16mm Width)
- Datasheet:
-
RMLV0408EGSB-4S2#AA1.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 32TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:1,698
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Product details
Overview
RMLV0408EGSB-4S2#AA1 from Renesas Electronics is a 4Mb advanced low-power static RAM organized as 524,288-word × 8-bit, operating from a single 2.7–3.6V supply, with 45ns max access time and 0.3µA typical standby current, designed for battery-backed memory systems in industrial controllers and portable instrumentation.
For engineers reviewing the RMLV0408EGSB-4S2#AA1 datasheet, RMLV0408EGSB-4S2#AA1 pinout, RMLV0408EGSB-4S2#AA1 application, or RMLV0408EGSB-4S2#AA1 equivalent, key selection criteria include TSOP (II) package compatibility, TTL-level I/O interface, low-voltage data retention down to 1.5V, and strict -40°C to +85°C industrial temperature operation.
Technical Context
This device implements a fully asynchronous SRAM architecture with common I/O bus, three-state output control via OE#, and chip-select–gated power management. Its timing supports equal read/write cycle times (tRC = tWC = 45ns), enabling deterministic bus arbitration in microcontroller-based systems without wait-state insertion.
The memory matrix uses a 19-bit address decoder (A0–A18) driving a 2,048 × 2,048 array, with integrated input/output buffers compliant to TTL voltage thresholds (VIH = 2.2V min, VIL = 0.6V max) and capable of driving ±1mA loads at VOH/VOL specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 4Mb (524,288 × 8-bit); supports byte-wide data transfers without external multiplexing |
| Supply voltage | 2.7–3.6V; compatible with 3.3V logic rails and tolerant of brown-out conditions during backup |
| Access time | 45ns max; enables direct interfacing with 22 MHz bus clocks without timing margin violation |
| Standby current | 0.3µA typ. at 25°C; extends battery life to years in always-on backup mode |
| Data retention VCC | 1.5V min; maintains stored data during deep sleep or main power loss |
| Operating temperature | -40°C to +85°C; qualified for uncontrolled industrial environments |
| I/O interface | TTL-compatible inputs/outputs; eliminates level-shifter requirements in legacy 3.3V systems |
Pinout & Package
Package: 400-mil 32-pin plastic TSOP (II), JEDEC standard MO-141AC, 12.0mm × 20.0mm footprint, 1.2mm height, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply | Primary 2.7–3.6V supply rail; decoupling required within 10mm of pin |
| VSS | Ground | Digital ground reference; must be connected to system GND plane with low-inductance path |
| A0–A18 | Address input | 19-bit address bus; A0 = LSB, A18 = MSB; latched on CS#/WE# transition for write |
| I/O0–I/O7 | Data input/output | Bi-directional 8-bit data bus; high-impedance when CS# = high or OE# = high |
| CS# | Chip select | Active-low enable; gates all internal operations and controls data retention entry when high |
| WE# | Write enable | Active-low write strobe; sampled synchronously with CS# to initiate write cycle |
| OE# | Output enable | Active-low output control; places I/O pins in high-Z when deasserted, independent of CS# state |
Key Features
| Feature | Design Value |
|---|---|
| Low-power standby | 0.3µA typical current draw enables multi-year battery backup without periodic refresh |
| Single-supply operation | Eliminates need for dual-rail regulators or charge pumps in space-constrained designs |
| Equal access/cycle timing | 45ns tRC = tWC simplifies bus controller logic and avoids asymmetric timing constraints |
| TTL-compatible I/O | Direct interface with legacy microcontrollers and FPGAs without level translation circuitry |
| Low-voltage data retention | Maintains valid memory contents down to 1.5V VCC, supporting graceful shutdown and brown-out recovery |
Applications
| Industrial PLC Data Logging | Medical Portable Monitor Buffer |
|---|---|
Use Scenario: Storing real-time sensor readings and alarm history during mains power interruption. IC Role / Device Role / Timing Role: Nonvolatile buffer holding up to 512KB of timestamped physiological data with zero write latency. Use Value: 0.3µA standby current extends CR2032 battery life beyond 5 years while retaining critical patient records. | Use Scenario: Capturing ECG waveform segments during intermittent wireless transmission windows. IC Role / Device Role / Timing Role: High-speed scratchpad memory enabling burst acquisition at 10ksps without CPU intervention. Use Value: 45ns access time supports direct DMA transfer from ADC to RMLV0408EGSB-4S2#AA1 at full sampling rate. |
| Smart Meter Firmware Cache | Automotive Body Control Module EEPROM Emulation |
Use Scenario: Caching firmware update payloads prior to flash programming to prevent corruption during power loss. IC Role / Device Role / Timing Role: Write-through cache holding encrypted OTA binaries until verified and committed to flash. Use Value: 1.5V data retention ensures payload integrity even during rapid battery disconnect events. | Use Scenario: Emulating EEPROM functionality for seat position and mirror settings in low-cost BCMs. IC Role / Device Role / Timing Role: Byte-addressable nonvolatile storage accessed via SPI-to-SRAM bridge logic. Use Value: TSOP (II) package allows drop-in replacement of legacy serial EEPROMs on existing PCBs with no layout change. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV25616AL-10TLI | 256K × 16-bit organization, 10ns access, 3.3V only, 44-pin TSOP | Higher density but wider bus; requires PCB redesign for 16-bit interface and pin count | Select if system demands faster access and can support 16-bit data path and larger footprint |
| AS6C4008-55ZIN | 4Mb × 8-bit, 55ns access, 2.7–3.6V, 32-pin SOP; higher standby current (1µA typ.) | Same density and voltage range but slower timing and less suitable for ultra-low-power backup | Select if SOP package is required and 55ns timing meets system bus requirements |
Compared with IS61LV25616AL-10TLI and AS6C4008-55ZIN, the RMLV0408EGSB-4S2#AA1 delivers optimal balance of 45ns speed, 0.3µA standby, and TSOP (II) footprint-making it preferred for battery-critical industrial and portable applications where pin count and power dominate over raw bandwidth.
Availability
RMLV0408EGSB-4S2#AA1 is available at Aetrix Electronics and suitable for industrial PLC data logging, portable medical monitor buffering, and smart meter firmware caching requiring stable component supply across extended product lifecycles.
Supply support for RMLV0408EGSB-4S2#AA1 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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT markets.
The RMLV0408E Series was developed specifically for ultra-low-power, battery-backed memory applications in harsh-environment industrial systems-emphasizing data retention reliability, wide temperature operation, and minimal standby leakage.
FAQ
What is the maximum operating frequency supported by the RMLV0408EGSB-4S2#AA1?
The RMLV0408EGSB-4S2#AA1 does not operate on a clock signal-it is an asynchronous SRAM. Its timing is governed by access and cycle time specifications: 45ns maximum access time (tAA) and 45ns maximum cycle time (tRC). This corresponds to a theoretical maximum bus toggle rate of ~22 MHz, assuming zero setup/hold overhead and ideal signal integrity.
Does the RMLV0408EGSB-4S2#AA1 support true hardware data retention during power loss?
Yes. The RMLV0408EGSB-4S2#AA1 supports guaranteed data retention down to 1.5V VCC when CS# is held high, with typical retention current of 0.3µA at 25°C. This enables reliable operation during brown-out or battery switchover without external supervision circuitry.
Is the RMLV0408EGSB-4S2#AA1 pin-compatible with other devices in the RMLV0408E Series?
Yes. All RMLV0408E Series variants-including RMLV0408EGSA-4S2#AA1 (sTSOP), RMLV0408EGSP-4S2#CA1 (SOP), and RMLV0408EGSB-4S2#AA1 (TSOP II)-share identical 32-pin pinouts and electrical behavior. Only package body dimensions and mounting details differ.
What are the voltage thresholds for TTL compatibility on the RMLV0408EGSB-4S2#AA1 inputs?
The RMLV0408EGSB-4S2#AA1 specifies VIH(min) = 2.2V and VIL(max) = 0.6V across the full temperature range (-40°C to +85°C), meeting standard TTL logic thresholds. Outputs drive VOH(min) = 2.4V at -1mA and VOL(max) = 0.4V at +2.1mA, ensuring robust noise margins in mixed-logic systems.
Can the RMLV0408EGSB-4S2#AA1 be used in place of a serial EEPROM for configuration storage?
Yes-with external control logic. While the RMLV0408EGSB-4S2#AA1 is a parallel SRAM, it can emulate EEPROM functionality by pairing with a simple state machine or microcontroller GPIO to manage address sequencing and write cycles. Its 0.3µA standby and 1.5V retention make it superior to most serial EEPROMs in battery-backed configuration storage.
RMLV0408EGSB-4S2#AA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-SOIC (0.400", 10.16mm Width)
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 45ns
- Access Time:
- 45 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 II
RMLV0408EGSB-4S2#AA1 FAQ
1.How can I place an order for RMLV0408EGSB-4S2#AA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RMLV0408EGSB-4S2#AA1 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 RMLV0408EGSB-4S2#AA1 reliable?
The price and inventory of RMLV0408EGSB-4S2#AA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RMLV0408EGSB-4S2#AA1 is usually 5 days.
3.What payment methods are accepted for RMLV0408EGSB-4S2#AA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RMLV0408EGSB-4S2#AA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RMLV0408EGSB-4S2#AA1?
RMLV0408EGSB-4S2#AA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RMLV0408EGSB-4S2#AA1 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 RMLV0408EGSB-4S2#AA1?
For technical support, including RMLV0408EGSB-4S2#AA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RMLV0408EGSB-4S2#AA1 requirements.
6.How does Aetrix verify that RMLV0408EGSB-4S2#AA1 is sourced from the original manufacturer or authorized distributors?
All RMLV0408EGSB-4S2#AA1 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 RMLV0408EGSB-4S2#AA1 meets industry standards.
7.What is the process for return or replacement of RMLV0408EGSB-4S2#AA1?
All RMLV0408EGSB-4S2#AA1 units undergo pre-shipment inspection (PSI). If there is an issue with RMLV0408EGSB-4S2#AA1, 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 RMLV0408EGSB-4S2#AA1 part is unused and in its original packaging.
Return procedure for RMLV0408EGSB-4S2#AA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RMLV0408EGSB-4S2#AA1 Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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