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Renesas R1LP0108ESA-7SI#S0
- Part No.:
- R1LP0108ESA-7SI#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-TFSOP (0.465", 11.80mm Width)
- Datasheet:
-
R1LP0108ESA-7SI#S0.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:3,754
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Product details
Overview
R1LP0108ESA-7SI#S0 from Renesas Electronics is a 1Mb (131,072 × 8-bit) low-power static RAM with 70 ns access time, -40°C to +85°C industrial temperature range, and 4.5–5.5 V single-supply operation. It features TTL-compatible I/O, no refresh requirement, and dual chip select (CS1#, CS2) for easy memory expansion in embedded control and data logging systems.
For engineers reviewing the R1LP0108ESA-7SI#S0 datasheet, R1LP0108ESA-7SI#S0 pinout, R1LP0108ESA-7SI#S0 application, or R1LP0108ESA-7SI#S0 equivalent, key selection criteria include standby current (0.6 µA typical at 5.0 V), data retention down to 2.0 V, three-state outputs with OR-tie capability, and sTSOP-32 package compatibility with space-constrained industrial PCB layouts.
Technical Context
The R1LP0108ESA-7SI#S0 implements a fully static 128k-word × 8-bit memory array using Renesas's 0.15 µm CMOS process, eliminating clock or refresh circuitry. Its dual chip select architecture (CS1# active-low, CS2 active-high) enables hierarchical memory mapping without external logic.
It supports asynchronous read/write cycles with guaranteed timing margins: tAA = 70 ns, tOE = 35 ns, tWP = 50 ns, and tWHZ = 25 ns max. Data retention mode is activated via CS2 ≤ 0.2 V or CS1# ≥ Vcc−0.2 V, drawing only 0.6 µA at 25°C while preserving contents at Vcc as low as 2.0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 131,072 × 8-bit (1 Mb); supports byte-wide data bus interfacing without width conversion logic |
| Access time | 70 ns max; ensures compatibility with 14 MHz bus clocks in microcontroller-based systems |
| Supply voltage | 4.5–5.5 V; operates reliably across standard 5 V rail tolerances without regulation |
| Standby current | 0.6 µA typical at 5.0 V/25°C; enables multi-year battery backup in non-volatile data loggers |
| Data retention VCC | 2.0 V min; maintains memory state during brown-out or battery-switchover events |
| Operating temperature | -40°C to +85°C; qualified for industrial-grade deployment in motor drives and remote sensors |
| I/O interface | TTL-compatible inputs/outputs; interfaces directly with legacy 5 V MCUs and FPGAs without level shifters |
Pinout & Package
Package: 32-pin sTSOP (8 mm × 13.4 mm, normal-bend type, PTSA0032KB-A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address input | 17-bit address bus supporting full 131,072-word addressing; A16 is MSB |
| DQ0–DQ7 | Data I/O | Bi-directional 8-bit data bus with three-state output drivers; 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 operations |
| CS2 | Chip select 2 | Active-high secondary enable; controls address/data buffers and enables retention mode when low |
| WE# | Write enable | Active-low write strobe; initiates write cycle on falling edge concurrent with CS1# low and CS2 high |
| OE# | Output enable | Active-low read strobe; gates DQ outputs to prevent bus contention during inactive cycles |
| Vcc | Power supply | +4.5 to +5.5 V supply; decoupling required within 10 mm of pin per layout guidelines |
| Vss | Ground | Signal ground reference; requires low-impedance connection to system GND plane |
| NC | No connect | Pin 1 (sTSOP top-left corner) is unconnected; must remain floating, not tied to Vcc/GND |
Key Features
| Feature | Design Value |
|---|---|
| No refresh required | Eliminates external refresh controller or timer overhead in MCU firmware, reducing code complexity and CPU load |
| Low standby current | 0.6 µA typical enables >10-year battery life in always-on monitoring nodes powered by coin cells |
| Dual chip select logic | CS1# (active-low) and CS2 (active-high) allow hierarchical decoding for multi-chip memory banks without glue logic |
| Three-state OR-tie capable outputs | Permits direct wire-OR connection of multiple R1LP0108ESA-7SI#S0 devices on a common data bus |
| 2.0 V data retention | Maintains stored values during power interruption down to 2.0 V, enabling seamless switchover to backup power sources |
Applications
| Industrial Data Logger | Motor Drive Controller |
|---|---|
Use Scenario: Continuous acquisition of sensor readings (temperature, current, position) with timestamping and local buffering before wireless upload. IC Role / Device Role / Timing Role: Primary working memory for real-time data capture and temporary storage prior to transmission. Use Value: 70 ns access time supports sampling rates up to 14 MSPS; 0.6 µA standby current extends battery life in unattended field deployments. |
Use Scenario: Storing PWM lookup tables, fault history logs, and calibration coefficients in servo amplifier modules. IC Role / Device Role / Timing Role: Non-refreshing SRAM for deterministic, jitter-free access to control parameters during real-time loop execution. Use Value: TTL compatibility ensures direct interface with 5 V FPGA or MCU; -40°C to +85°C rating guarantees reliability inside sealed drive enclosures. |
| Medical Diagnostic Handheld | Smart Energy Meter |
Use Scenario: Temporary storage of ECG waveform segments and diagnostic metadata during offline operation. IC Role / Device Role / Timing Role: Battery-backed memory buffer retaining critical patient data during main power loss or battery replacement. Use Value: 2.0 V data retention threshold allows safe holdover during hot-swap of primary batteries; sTSOP-32 footprint minimizes board area in compact handhelds. |
Use Scenario: Cyclic logging of voltage/current harmonics, tariff data, and tamper events in DIN-rail mounted meters. IC Role / Device Role / Timing Role: High-reliability scratchpad memory for time-stamped event records and firmware update staging. Use Value: Dual CS pins simplify integration into multi-SRAM BOMs; industrial temp range ensures accuracy across outdoor temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV10248AL-70TQLI | 70 ns access, 3.3 V supply (not 5 V), 32-pin TSOP-II; lower standby current (1 µA) but incompatible voltage domain | Requires level-shifting or separate 3.3 V rail; unsuitable for legacy 5 V systems without redesign | Select only if migrating to 3.3 V architecture and verifying timing margins with new controller |
| AS6C1008-70SCN | 70 ns access, 5 V supply, 32-pin SOP; higher standby current (2 µA typ), no data retention below 4.5 V | Lacks low-Vcc retention capability; not viable for battery-switchover or brown-out scenarios | Acceptable for cost-sensitive 5 V systems where continuous power is guaranteed and retention is not required |
Compared with R1LP0108ESA-7SI#S0, IS61LV10248AL-70TQLI offers lower power but mandates 3.3 V infrastructure, while AS6C1008-70SCN matches voltage but sacrifices data retention and increases standby draw-making R1LP0108ESA-7SI#S0 the sole choice for industrial battery-backed 5 V designs requiring robust low-Vcc holdover.
Availability
R1LP0108ESA-7SI#S0 is available at Aetrix Electronics and suitable for industrial data loggers, motor drive controllers, medical handhelds, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for R1LP0108ESA-7SI#S0 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 is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and memory solutions for industrial, automotive, and infrastructure markets.
The R1LP0108E Series was designed as low-voltage, low-power static RAM for battery-operated and battery-backup memory applications where simplicity, reliability, and extended data retention are critical.
FAQ
What is the minimum supply voltage required to retain data in R1LP0108ESA-7SI#S0?
The R1LP0108ESA-7SI#S0 maintains stored data down to 2.0 V Vcc when placed in data retention mode via CS2 ≤ 0.2 V or CS1# ≥ Vcc−0.2 V. At 3.0 V and 25°C, typical retention current is 0.6 µA. This behavior is verified per the Low Vcc Data Retention Characteristics table on page 12 of the R10DS0151EJ0100 datasheet.
Does R1LP0108ESA-7SI#S0 require an external clock or refresh signal?
No, the R1LP0108ESA-7SI#S0 is a fully static RAM and requires no clock, refresh cycle, or periodic access to retain data. Its internal latch-based cell design eliminates refresh overhead, simplifying system design and reducing MCU firmware complexity compared to DRAM or pseudo-static RAM.
Can R1LP0108ESA-7SI#S0 be used in a 3.3 V system?
No-the R1LP0108ESA-7SI#S0 is specified only for 4.5–5.5 V operation. Applying 3.3 V violates the Absolute Maximum Ratings (Vcc min = −0.3 V, but DC Operating Conditions require ≥4.5 V). Attempting 3.3 V operation risks data corruption, excessive leakage, or functional failure per Section 5 of the datasheet.
What is the function of the NC pin on R1LP0108ESA-7SI#S0?
Pin 1 of the R1LP0108ESA-7SI#S0 in its 32-pin sTSOP package is designated NC (No Connect) and must remain electrically floating-neither tied to Vcc nor GND. This pin has no internal connection and serves only as a mechanical alignment marker; grounding or driving it may cause unpredictable behavior or damage.
How does the dual chip select (CS1# and CS2) architecture improve memory expansion with R1LP0108ESA-7SI#S0?
The R1LP0108ESA-7SI#S0 uses CS1# (active-low) and CS2 (active-high) to enable hierarchical decoding: CS2 selects the device group, while CS1# selects individual chips within that group. This allows up to four R1LP0108ESA-7SI#S0 devices to share one address/data bus without external logic, reducing component count and routing complexity in multi-MB memory subsystems.
R1LP0108ESA-7SI#S0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-TFSOP (0.465", 11.80mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP I
R1LP0108ESA-7SI#S0 FAQ
1.How can I place an order for R1LP0108ESA-7SI#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0108ESA-7SI#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 R1LP0108ESA-7SI#S0 reliable?
The price and inventory of R1LP0108ESA-7SI#S0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LP0108ESA-7SI#S0 is usually 5 days.
3.What payment methods are accepted for R1LP0108ESA-7SI#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0108ESA-7SI#S0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0108ESA-7SI#S0?
R1LP0108ESA-7SI#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0108ESA-7SI#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 R1LP0108ESA-7SI#S0?
For technical support, including R1LP0108ESA-7SI#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0108ESA-7SI#S0 requirements.
6.How does Aetrix verify that R1LP0108ESA-7SI#S0 is sourced from the original manufacturer or authorized distributors?
All R1LP0108ESA-7SI#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 R1LP0108ESA-7SI#S0 meets industry standards.
7.What is the process for return or replacement of R1LP0108ESA-7SI#S0?
All R1LP0108ESA-7SI#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0108ESA-7SI#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 R1LP0108ESA-7SI#S0 part is unused and in its original packaging.
Return procedure for R1LP0108ESA-7SI#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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