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Renesas R1LP0108ESA-7SR#B0
- Part No.:
- R1LP0108ESA-7SR#B0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-TFSOP (0.465", 11.80mm Width)
- Datasheet:
-
R1LP0108ESA-7SR#B0.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:3,433
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Product details
Overview
R1LP0108ESA-7SR#B0 from Renesas Electronics is a 1Mb (131,072 × 8-bit) low-power static RAM with 70 ns access time, single 4.5–5.5 V supply, and 0.6 µA typical standby current at 5.0 V. It features TTL-compatible I/O, no refresh requirement, and dual chip select (CS1#, CS2) for easy memory expansion - deployed in battery-backed industrial controllers and portable instrumentation.
For engineers reviewing the R1LP0108ESA-7SR#B0 datasheet, R1LP0108ESA-7SR#B0 pinout, R1LP0108ESA-7SR#B0 application, or R1LP0108ESA-7SR#B0 equivalent, key selection criteria include its sTSOP-32 package, -40°C to +70°C operating range, 70 ns read/write timing, low-voltage data retention down to 2.0 V, and OR-tie capable three-state outputs for bus sharing.
Technical Context
This device implements a fully static CMOS memory array with independent address decoding, sense/write amplifiers, and TTL-level input buffers. Its dual chip select architecture enables seamless bank expansion without external logic, while OE# and WE# provide precise control over output enable and write strobe timing.
The R1LP0108ESA-7SR#B0 supports two distinct data retention modes: CS2-controlled (0–0.2 V) or CS1#-controlled (≥ Vcc−0.2 V), both enabling operation at Vcc as low as 2.0 V with sub-µA retention current. All inputs/outputs meet standard TTL voltage thresholds and drive specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mb (131,072 words × 8 bits) - supports byte-wide data paths in microcontroller-based systems. |
| Access Time | 70 ns - ensures compatibility with 14 MHz bus clocks in legacy embedded designs. |
| Supply Voltage | 4.5–5.5 V - operates within standard 5 V TTL/CMOS system rails without regulation overhead. |
| Standby Current | 0.6 µA typical at 5.0 V/25°C - enables multi-year battery backup in nonvolatile storage applications. |
| Data Retention VCC | 2.0 V minimum - maintains stored data during brown-out or battery-swapping events. |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade industrial control and test equipment environments. |
| Package | 32-pin sTSOP (8 mm × 13.4 mm, normal-bend) - surface-mount compatible with high-density PCB layouts. |
Pinout & Package
Package: 32-pin plastic sTSOP (PTSA0032KB-A), 8 mm × 13.4 mm footprint, normal-bend lead configuration, tray packaging (234 pcs/tray).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Input | 17-bit address bus supporting full 131,072-word addressing; no multiplexing required. |
| DQ0–DQ7 | Data I/O | Bi-directional 8-bit data bus with three-state outputs; supports OR-tie for shared-bus architectures. |
| CS1#, CS2 | Chip Select | Dual active-low selects enable hierarchical memory mapping and reduce decode logic complexity. |
| WE# | Write Enable | Active-low write strobe synchronized with address and CS; defines write cycle boundaries. |
| OE# | Output Enable | Active-low control prevents bus contention during read operations or idle states. |
| Vcc, Vss | Power/Ground | Single 5 V supply with dedicated ground pin; decoupling required per JEDEC sTSOP guidelines. |
| NC | No Connect | Pin 1 (NC) is internally unconnected; must remain floating or tied to ground per layout best practice. |
Key Features
| Feature | Design Value |
|---|---|
| No refresh required | Eliminates external refresh circuitry and timing constraints - simplifies system design and reduces firmware overhead. |
| TTL-compatible I/O | Direct interface with legacy 5 V microcontrollers and FPGAs without level-shifting components. |
| Low standby current (0.6 µA) | Enables >10-year data retention on coin-cell batteries in metering and logging applications. |
| Common Data I/O | Reduces PCB trace count and simplifies routing by using same pins for read and write data transfer. |
| OR-tie capability | Allows multiple R1LP0108ESA-7SR#B0 devices to share a single data bus without external wired-OR logic. |
Applications
| Industrial Data Logger | Medical Patient Monitor |
|---|---|
Use Scenario: Continuous acquisition of sensor readings (ECG, SpO₂, temperature) with periodic flash backup. IC Role / Device Role / Timing Role: Primary volatile buffer between ADC subsystem and host MCU; holds up to 128 KB of raw waveform data. Use Value: 70 ns access time enables real-time buffering at 14 MSPS sample rates; 0.6 µA standby preserves battery life during sleep cycles. |
Use Scenario: Temporary storage of diagnostic waveforms and alarm history during power interruption. IC Role / Device Role / Timing Role: Battery-backed SRAM holding critical patient data during AC loss or battery swap. Use Value: 2.0 V data retention threshold ensures integrity through brown-out events; sTSOP package fits compact front-panel PCBs. |
| Programmable Logic Controller (PLC) | Test & Measurement Equipment |
Use Scenario: Storing ladder logic variables, I/O status, and fault registers in modular PLC backplanes. IC Role / Device Role / Timing Role: Local memory node for real-time I/O processing; accessed via parallel bus from ARM9 or ColdFire controller. Use Value: Dual CS# signals allow seamless integration into multi-slot chassis with bank-select decoding; 5.5 V max rating tolerates rail transients. |
Use Scenario: Capturing oscilloscope waveform snapshots or spectrum analyzer FFT bins before display rendering. IC Role / Device Role / Timing Role: High-speed capture buffer interfaced directly to FPGA-based acquisition engine. Use Value: 70 ns tAA and tWC support 14 MHz burst reads/writes; three-state DQ lines prevent contention during FIFO handshaking. |
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 |
|---|---|---|---|
| IS61LV10248AL-70TQLI | 70 ns access, 3.3 V supply only (2.7–3.6 V), 32-pin TSOP-II package, 1 µA standby. | Requires 3.3 V system rail; not drop-in compatible due to voltage and pinout mismatch. | Select when migrating to 3.3 V platforms and redesigning power delivery; verify address/data bus loading. |
| AS6C1008-70ZIN | 70 ns access, 5 V supply (4.5–5.5 V), 32-pin SOJ package, 1.5 µA standby, no CS2 pin. | Lacks dual chip select; uses SOJ instead of sTSOP - requires PCB rework and thermal validation. | Choose for cost-sensitive replacements where board space allows SOJ and simplified decode logic suffices. |
Compared with IS61LV10248AL-70TQLI and AS6C1008-70ZIN, the R1LP0108ESA-7SR#B0 uniquely combines 5 V operation, dual CS#, sTSOP packaging, and sub-µA standby - making it optimal for legacy 5 V industrial systems requiring minimal layout change and long-term battery hold-up.
Availability
R1LP0108ESA-7SR#B0 is available at Aetrix Electronics and suitable for industrial data loggers, medical patient monitors, programmable logic controllers, test equipment, and battery-backed instrumentation requiring stable component supply across extended product lifecycles.
Supply support for R1LP0108ESA-7SR#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 is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and infrastructure markets.
The R1LP0108E Series was designed as low-power, high-reliability parallel SRAM for battery-operated and mission-critical embedded systems where data integrity during power loss is essential.
FAQ
What is the maximum operating frequency supported by R1LP0108ESA-7SR#B0?
The R1LP0108ESA-7SR#B0 has a 70 ns access time, corresponding to a maximum effective bus clock frequency of approximately 14 MHz under standard read/write cycle conditions. This timing assumes proper setup/hold margins and meets all AC specifications in the R10DS0151EJ0100 datasheet for the R1LP0108ESA-7SR#B0 at 5.0 V and 25°C ambient.
Does R1LP0108ESA-7SR#B0 require an external clock or refresh signal?
No, the R1LP0108ESA-7SR#B0 is a fully static RAM and requires no external clock or refresh signal. Its internal latch-based cell design retains data indefinitely as long as power is applied and CS# conditions maintain valid state - eliminating refresh overhead in firmware and hardware design.
Can R1LP0108ESA-7SR#B0 operate at 3.3 V?
No, the R1LP0108ESA-7SR#B0 is specified only for 4.5–5.5 V operation. Its input thresholds (VIH = 2.2 V min, VIL = 0.8 V max) and internal logic are optimized for 5 V TTL compatibility. Operation below 4.5 V violates absolute maximum ratings and risks data corruption or functional failure.
What is the purpose of the NC pin on R1LP0108ESA-7SR#B0?
Pin 1 of the R1LP0108ESA-7SR#B0 is marked NC (No Connect) and is not bonded internally. It must be left unconnected or tied to ground per Renesas layout recommendations - floating NC pins may introduce noise coupling or ESD susceptibility in high-density sTSOP layouts.
How does R1LP0108ESA-7SR#B0 achieve data retention during power loss?
The R1LP0108ESA-7SR#B0 supports two low-Vcc data retention modes: CS2 ≤ 0.2 V or CS1# ≥ Vcc−0.2 V (with CS2 ≥ Vcc−0.2 V). In either mode, it retains data down to 2.0 V supply with typical current draw of 0.6 µA at 25°C - enabling reliable hold-up using small backup capacitors or coin cells.
R1LP0108ESA-7SR#B0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-TFSOP (0.465", 11.80mm Width)
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP I
R1LP0108ESA-7SR#B0 FAQ
1.How can I place an order for R1LP0108ESA-7SR#B0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0108ESA-7SR#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 R1LP0108ESA-7SR#B0 reliable?
The price and inventory of R1LP0108ESA-7SR#B0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LP0108ESA-7SR#B0 is usually 5 days.
3.What payment methods are accepted for R1LP0108ESA-7SR#B0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0108ESA-7SR#B0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0108ESA-7SR#B0?
R1LP0108ESA-7SR#B0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0108ESA-7SR#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 R1LP0108ESA-7SR#B0?
For technical support, including R1LP0108ESA-7SR#B0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0108ESA-7SR#B0 requirements.
6.How does Aetrix verify that R1LP0108ESA-7SR#B0 is sourced from the original manufacturer or authorized distributors?
All R1LP0108ESA-7SR#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 R1LP0108ESA-7SR#B0 meets industry standards.
7.What is the process for return or replacement of R1LP0108ESA-7SR#B0?
All R1LP0108ESA-7SR#B0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0108ESA-7SR#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 R1LP0108ESA-7SR#B0 part is unused and in its original packaging.
Return procedure for R1LP0108ESA-7SR#B0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LP0108ESA-7SR#B0 Tags
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