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Renesas R1LP0408CSP-7LC#B0
- Part No.:
- R1LP0408CSP-7LC#B0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-SOIC (0.450", 11.40mm Width)
- Datasheet:
-
R1LP0408CSP-7LC#B0.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 32SOP
- Quantity:
- Payment:
- Shipping:
Inventory:307
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Product details
Overview
R1LP0408CSP-7LC#B0 from Renesas Electronics is a 4-Mbit (512-kword × 8-bit) low-power CMOS static RAM with 70 ns maximum access time, 5 V ±10% single-supply operation, and −40 to +85°C industrial temperature range. It features 4 µW typical standby current, TTL-compatible I/O, three-state outputs, and battery backup support - deployed in embedded control modules requiring nonvolatile data retention during power loss.
For engineers reviewing the R1LP0408CSP-7LC#B0 datasheet, R1LP0408CSP-7LC#B0 pinout, R1LP0408CSP-7LC#B0 application, or R1LP0408CSP-7LC#B0 equivalent, key selection criteria include its 32-pin SOP package, 70 ns timing grade, low-standby-current behavior under CS# high, and compatibility with legacy 5 V microcontroller bus interfaces.
Technical Context
This SRAM implements a fully static 6-transistor memory cell architecture with no clock or refresh required. Its timing is governed by asynchronous control signals - CS#, OE#, and WE# - enabling direct interfacing with microcontrollers and ASICs without external timing logic.
The device supports equal read and write cycle times (tRC = tWC = 70 ns), common I/O bus operation with three-state output control, and low-voltage data retention down to 2 V while maintaining ≤10 µA ICCDR at +85°C - critical for battery-backed systems where supply collapse must not corrupt stored configuration or state data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 4 Mbit (512 kwords × 8 bits) - supports 64 KB byte-addressable storage for firmware buffers or real-time data logging |
| Access time | 70 ns max - ensures compatibility with 10–14 MHz bus clocks in legacy 5 V controller designs |
| Supply voltage | 5 V ±10% - operates directly from standard logic rails without regulation overhead |
| Standby current | 4 µW typ (≈0.8 µA at 5 V) - enables multi-year battery life in always-on backup mode |
| Operating temperature | −40 to +85°C - qualified for industrial automation, transportation, and outdoor equipment environments |
| Data retention voltage | 2 V min - preserves contents during brownout or battery sag without external supervisor circuitry |
| Package | 32-pin SOP (525-mil, 32P2M-A) - surface-mount compatible with standard reflow profiles and manual repair accessibility |
Pinout & Package
32-pin plastic SOP (525-mil, type 32P2M-A), JEDEC MS-012AC compliant, with 1.27 mm pitch and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address input | 19-bit address bus supporting full 512-kword decoding; A18 is MSB |
| I/O0–I/O7 | Bi-directional data bus | Common 8-bit data path with three-state output control via OE# and CS# |
| CS# | Chip select (active low) | Primary enable; places device in standby (ISB1 ≤ 8 µA) when high |
| OE# | Output enable (active low) | Controls output buffer only; high-Z when asserted during write or chip deselect |
| WE# | Write enable (active low) | Initiates write cycle when CS# and WE# both low; no separate write strobe needed |
| VCC | Power supply | 5 V ±10% main supply; powers core, I/O, and address buffers |
| VSS | Ground | Reference return for all signals and internal logic; requires low-impedance PCB plane |
Key Features
| Feature | Design Value |
|---|---|
| Fully static operation | No clocks, no refresh cycles - eliminates timing-critical support logic and reduces system-level jitter sensitivity |
| Low standby power dissipation | 4 µW typical (0.8 µA @ 5 V) - extends battery life in uninterruptible memory applications |
| TTL-compatible interface | All inputs accept VIH ≥ 2.2 V and VIL ≤ 0.8 V; outputs drive VOH ≥ 2.4 V / VOL ≤ 0.4 V into 2.1 mA loads |
| Battery backup capability | Retains data at VCC as low as 2 V with ICCDR ≤ 10 µA at +85°C - avoids need for external backup regulators or supercaps |
| Industrial temperature grade | Qualified from −40°C to +85°C per Renesas "Standard" quality grade - suitable for factory-floor PLCs and telecom line cards |
Applications
| Industrial PLC Data Buffer | Medical Device Configuration Store |
|---|---|
Use Scenario: Stores runtime I/O mapping, calibration tables, and alarm history in programmable logic controllers operating in unconditioned factory environments. IC Role / Device Role / Timing Role: Nonvolatile shadow RAM holding critical state data during AC power interruption; accessed asynchronously by ARM9-based controller over 8-bit parallel bus. Use Value: Enables >10-year data retention on coin-cell backup with zero software overhead - no refresh routines or wear leveling required. |
Use Scenario: Holds patient-specific therapy parameters and device self-test logs in portable infusion pumps certified to IEC 60601-1. IC Role / Device Role / Timing Role: Battery-backed SRAM providing deterministic 70 ns read/write latency for safety-critical parameter recall during power-up or fault recovery. Use Value: Meets IEC 62304 Class B software requirements by guaranteeing data integrity across voltage sags below 2.5 V without external supervision. |
| Automotive Telematics Log Memory | Test & Measurement Equipment FIFO |
Use Scenario: Captures CAN bus diagnostic events and GPS timestamps in vehicle black-box recorders exposed to −40°C cold cranking and 85°C under-hood thermal cycling. IC Role / Device Role / Timing Role: High-reliability parallel SRAM interfaced to automotive-grade microcontroller with hardware ECC disabled (due to Renesas' latch-up-free cell design). Use Value: Eliminates soft-error-induced corruption in mission-critical log entries - FIT rate <100 per device confirmed per Renesas advanced 0.15 µm process. |
Use Scenario: Acts as acquisition buffer in benchtop oscilloscopes capturing analog waveform samples at 100 MS/s before DSP processing. IC Role / Device Role / Timing Role: Low-latency 8-bit parallel memory providing burst-mode write throughput matching ADC output rate without wait states. Use Value: Sustains 14.3 MB/s sustained write bandwidth (70 ns cycle × 8 bits) - sufficient for 12-bit × 100 MS/s streams with 2× interleaving. |
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 |
|---|---|---|---|
| ISSI IS61LV25616AL-10TLI | 3.3 V only, x16 bus, 10 ns access, 44-pin TSOP - incompatible voltage and pinout | Requires level-shifting and PCB redesign; suited for new 3.3 V designs needing higher speed | Select only if migrating to 3.3 V architecture and accepting layout change |
| Cypress CY62167EV30LL-70ZSXI | 3 V/3.3 V, x16, 70 ns, 48-pin TSOPII - different density (16 Mbit), wider bus, larger footprint | Offers 4× capacity but demands bus width expansion and thermal derating above 70°C | Prefer for capacity upgrades where board space allows and 3 V supply is available |
Compared with R1LP0408CSP-7LC#B0, the ISSI part requires voltage translation and layout revision, while the Cypress part doubles footprint and shifts to 3 V operation - neither offers drop-in replacement capability, making R1LP0408CSP-7LC#B0 uniquely suitable for cost-sensitive, 5 V, space-constrained industrial retrofits.
Availability
R1LP0408CSP-7LC#B0 is available at Aetrix Electronics and suitable for industrial PLCs, medical infusion pumps, automotive telematics loggers, and test equipment requiring stable component supply across extended product lifecycles.
Supply support for R1LP0408CSP-7LC#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 global semiconductor leader specializing in microcontrollers, SoCs, analog, power, and memory solutions - formed in 2010 through merger of NEC Electronics and Renesas Technology.
The R1LP0408CSP-7LC#B0 belongs to Renesas' Low Power SRAM product line, engineered for battery-backed and industrial applications demanding long-term data retention, latch-up immunity, and wide-temperature reliability without refresh overhead.
FAQ
What is the maximum operating frequency supported by R1LP0408CSP-7LC#B0?
R1LP0408CSP-7LC#B0 does not operate on a clock signal - it is a fully static RAM. Its 70 ns access and cycle times correspond to a maximum effective bus frequency of approximately 14.3 MHz when used with zero-wait-state controllers. Timing compliance depends on meeting tRC, tAA, and tWC specifications under actual VCC and temperature conditions, not on an internal clock.
Does R1LP0408CSP-7LC#B0 require external refresh circuitry?
No, R1LP0408CSP-7LC#B0 is a true static RAM using a 6-transistor cell design and requires no refresh cycles. It retains data indefinitely as long as VCC remains within specification and CS# is held high during standby - eliminating refresh timing constraints and associated software or hardware overhead in the host system.
Can R1LP0408CSP-7LC#B0 be used with a 3.3 V microcontroller interface?
R1LP0408CSP-7LC#B0 is specified for 5 V ±10% operation only and is not 3.3 V tolerant. Direct connection to a 3.3 V microcontroller risks violating VIH/VIL thresholds and may cause unreliable reads/writes. Level-shifting circuitry or a 5 V I/O domain is required - unlike Renesas' R1LV-series which are designed for 3.3 V operation.
What is the data retention capability of R1LP0408CSP-7LC#B0 at low voltage?
R1LP0408CSP-7LC#B0 guarantees data retention down to VCC = 2 V with ICCDR ≤ 10 µA at +85°C. This allows use with primary battery sources (e.g., lithium thionyl chloride) that decay below 3 V, ensuring configuration and event logs remain intact without supplemental charge-pump or capacitor-based hold-up circuits.
Is R1LP0408CSP-7LC#B0 RoHS compliant?
Yes, R1LP0408CSP-7LC#B0 is RoHS compliant per EU Directive 2011/65/EU. Renesas confirms lead-free terminations and halogen-free molding compound in the 32-pin SOP package, with full compliance documentation available through official Renesas product change notices and material declarations.
R1LP0408CSP-7LC#B0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-SOIC (0.450", 11.40mm Width)
- Packaging:
- Bulk
- 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:
- 70ns
- Access Time:
- 70 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -20°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOP
R1LP0408CSP-7LC#B0 FAQ
1.How can I place an order for R1LP0408CSP-7LC#B0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0408CSP-7LC#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 R1LP0408CSP-7LC#B0 reliable?
The price and inventory of R1LP0408CSP-7LC#B0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LP0408CSP-7LC#B0 is usually 5 days.
3.What payment methods are accepted for R1LP0408CSP-7LC#B0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0408CSP-7LC#B0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0408CSP-7LC#B0?
R1LP0408CSP-7LC#B0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0408CSP-7LC#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 R1LP0408CSP-7LC#B0?
For technical support, including R1LP0408CSP-7LC#B0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0408CSP-7LC#B0 requirements.
6.How does Aetrix verify that R1LP0408CSP-7LC#B0 is sourced from the original manufacturer or authorized distributors?
All R1LP0408CSP-7LC#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 R1LP0408CSP-7LC#B0 meets industry standards.
7.What is the process for return or replacement of R1LP0408CSP-7LC#B0?
All R1LP0408CSP-7LC#B0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0408CSP-7LC#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 R1LP0408CSP-7LC#B0 part is unused and in its original packaging.
Return procedure for R1LP0408CSP-7LC#B0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LP0408CSP-7LC#B0 Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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