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Renesas 71V3577S85PFG
- Part No.:
- 71V3577S85PFG
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
71V3577S85PFG.pdf
- Description:
- IC SRAM 4.5MBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,298
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Product details
Overview
71V3577S85PFG from Renesas Electronics is a 128K × 36-bit (4.608 Mb), 3.3V synchronous SRAM with flow-through outputs, burst counter, and single-cycle deselect. It supports 8.5 ns access time at up to 87 MHz clock frequency, operates across industrial temperature range (–40°C to +85°C), and features LBO-controlled linear/interleaved burst mode - used in high-bandwidth cache and packet buffering subsystems.
For engineers reviewing the 71V3577S85PFG datasheet, 71V3577S85PFG pinout, 71V3577S85PFG application, or 71V3577S85PFG equivalent, key selection criteria include its TQFP-100 package, 3.3V core/I/O supply, synchronous burst read/write capability, flow-through output architecture, and support for byte-selectable or global write control in real-time memory subsystems.
Technical Context
This SRAM implements a synchronous interface with registered address, control, and data inputs, and a flow-through (unregistered) output path - eliminating output register latency. Its internal burst counter advances on ADV=LOW and generates four sequential addresses per initial address, with ordering determined by the static LBO pin state (linear vs. interleaved).
The device uses dual power domains (VDD = 3.3V ±5% core, VDDQ = 3.3V ±5% I/O), supports asynchronous sleep mode via ZZ input (IZZ ≤ 35 µA), and enables flexible write control through GW (global), BWE (byte-enable gating), and BW1–BW4 (individual 9-bit byte selects), with all writes self-timed and synchronized to CLK.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 36-bit (4.608 Mbit); supports 256K × 18-bit configuration via pin strapping |
| Access Time / Max Clock | 8.5 ns / 87 MHz - guaranteed for industrial temperature (–40°C to +85°C) |
| Supply Voltages | VDD = 3.3V ±5% (core), VDDQ = 3.3V ±5% (I/O) - decoupled domains enable noise isolation |
| Burst Mode | Four-word burst with programmable order (LBO pin); ADV=LOW initiates/advances counter |
| Power Modes | Active (IDD ≤ 190 mA), standby (ISB1 ≤ 35 mA), full sleep (IZZ ≤ 35 µA) - ZZ-controlled |
| Output Architecture | Flow-through (no output register); tCD = 8.5 ns max clock-to-data; tOHZ = 3.5 ns max OE→high-Z |
| Package | JEDEC-standard 100-pin TQFP (14 mm × 20 mm); lead-free, RoHS-compliant |
Pinout & Package
71V3577S85PFG is packaged in a 100-pin thin quad flatpack (TQFP), JEDEC standard PKG100, with 0.5 mm pitch and exposed thermal pad. Pinout validated per Renesas datasheet 6450, revision 6.42 (Sep 2023), specifically for 128K × 36 configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | Synchronous address latching on rising CLK edge when ADSP/ADSC active; A0–A16 used for 128K×36 |
| CLK | System Clock Input | Primary timing reference; all synchronous inputs sampled on rising edge |
| CE, CS0, CS1 | Chip Enable/Select | Three-level chip select logic (CE=LOW, CS0=HIGH, CS1=LOW required for activation) |
| GW, BWE, BW1–BW4 | Write Control Inputs | GW enables full 36-bit write; BWE gates BWx; BW1–BW4 each control one 9-bit byte (I/O0–7+I/OP1, etc.) |
| ADV, ADSP, ADSC | Burst & Address Status | ADSP/ADSC load address register; ADV=LOW advances internal burst counter for next word |
| LBO | Burst Order Select | Asynchronous static input: LBO=LOW → linear burst; LBO=HIGH → interleaved burst |
| ZZ | Sleep Mode Input | Asynchronous HIGH activates full sleep mode; internal CLK gating and current reduction to ≤35 µA |
| I/O0–I/O31, I/OP1–I/OP4 | Data I/O | 36-bit bidirectional bus; input path registered, output path flow-through; no output latch delay |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through output architecture | Eliminates output register delay - tCD = 8.5 ns directly from CLK edge, critical for tight-timing cache interfaces |
| Single-cycle deselect | Device enters high-impedance output state within one CLK cycle after CE/CS deassertion - prevents bus contention |
| Configurable burst order (LBO) | Hardware-selectable linear or interleaved 4-word burst sequence - matches CPU/cache controller addressing patterns |
| Self-timed write cycle | Write completion determined internally; no external wait-state generation needed - simplifies controller design |
| Industrial temperature support | Guaranteed operation from –40°C to +85°C at 8.5 ns speed - suitable for telecom infrastructure and industrial PLCs |
Applications
| Network Packet Buffering | High-Speed Cache Memory |
|---|---|
|
Use Scenario: Storing ingress/egress packet headers and metadata in Layer 2/3 switches with line-rate throughput. IC Role / Device Role / Timing Role: Synchronous burst-access buffer interfacing directly to MAC or switch fabric controller. Use Value: 8.5 ns tCD and flow-through outputs enable sub-10 ns read turnaround, supporting 87 MHz packet processing clocks. |
Use Scenario: Secondary cache (L2) for RISC-V or ARM-based SoCs in test equipment and embedded controllers. IC Role / Device Role / Timing Role: Low-latency, wide-bus (36-bit) memory providing burst-aligned instruction/data fetches. Use Value: Linear/interleaved burst modes align with processor prefetch patterns; single-cycle deselect avoids pipeline stalls during context switches. |
| Telecom Baseband Processing | Industrial Motion Control Buffer |
|
Use Scenario: Real-time buffering of IQ samples between FPGA-based digital downconverters and DSP cores in 4G/5G RRUs. IC Role / Device Role / Timing Role: High-reliability, temperature-stable SRAM for deterministic sample FIFOs. Use Value: Industrial temp rating (–40°C to +85°C) and low sleep current (IZZ ≤ 35 µA) support fanless outdoor deployment. |
Use Scenario: Position/trajectory data buffering in servo drive controllers requiring jitter-free interrupt response. IC Role / Device Role / Timing Role: Deterministic-access memory for motion profile look-up tables and encoder feedback storage. Use Value: Synchronous interface with tSA/tHA ≤ 2 ns ensures setup/hold compliance with fast microcontroller buses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1371DV33-8BGXI | 128K × 32-bit, 8 ns access, 119-ball BGA only - no TQFP option; lacks LBO burst-order control | Requires PCB redesign (BGA vs. TQFP); limited burst flexibility impacts cache coherency in some architectures | Select if BGA footprint and 32-bit bus width are acceptable; verify burst compatibility with host controller |
| AS7C3256A-8TIN | 32K × 32-bit, 8 ns, TQFP-100 - smaller density, no burst counter or ADV/LBO logic; asynchronous OE | Cannot support multi-word burst reads; insufficient capacity for packet buffers >1 KB | Only suitable for simple FIFO or register-file replacement where burst and density are not required |
Compared with CY7C1371DV33-8BGXI and AS7C3256A-8TIN, the 71V3577S85PFG uniquely delivers 128K × 36-bit density in TQFP-100 with hardware-configurable burst order and flow-through timing - enabling direct integration into legacy synchronous bus designs without layout change or controller firmware update.
Availability
71V3577S85PFG is available at Aetrix Electronics and suitable for network packet buffering, high-speed cache memory, and industrial motion control applications requiring stable component supply, long-term lifecycle support, and industrial-grade temperature performance.
Supply support for 71V3577S85PFG 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 global semiconductor leader specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.
The 71V3577S series belongs to Renesas' high-speed synchronous SRAM product line, engineered for deterministic, low-latency memory subsystems in networking, telecom, and real-time control applications.
FAQ
What is the maximum operating frequency of the 71V3577S85PFG?
The 71V3577S85PFG supports up to 87 MHz clock frequency with 8.5 ns access time, fully specified over the industrial temperature range (–40°C to +85°C). This speed is guaranteed for both 128K × 36 and 256K × 18 configurations in the TQFP-100 package.
Does the 71V3577S85PFG support burst read operations?
Yes, the 71V3577S85PFG supports four-word synchronous burst reads initiated by ADV=LOW. The burst order (linear or interleaved) is selected by the LBO pin state, and the internal counter advances automatically - no external address sequencing required.
What is the function of the ZZ pin on the 71V3577S85PFG?
The ZZ pin on the 71V3577S85PFG is an asynchronous sleep mode input. When driven HIGH, it gates the internal clock and reduces supply current to ≤35 µA (IZZ), while guaranteeing data retention - ideal for power-gated subsystems in industrial equipment.
Can the 71V3577S85PFG be used in both 128K × 36 and 256K × 18 configurations?
Yes, the 71V3577S85PFG is configurable as either 128K × 36 or 256K × 18 via address pin mapping (A17 unused in 128K×36 mode; A16/A17 used in 256K×18 mode), with identical timing and feature support in both configurations per Renesas datasheet 6450.
Is the 71V3577S85PFG compatible with 3.3V-only system interfaces?
Yes, the 71V3577S85PFG uses separate 3.3V ±5% supplies for core (VDD) and I/O (VDDQ), with VIH thresholds referenced to VDDQ (≥2.0 V) and VIL ≤0.8 V - ensuring robust interoperability with standard 3.3V LVTTL/LVCMOS controllers without level shifting.
71V3577S85PFG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Synchronous, SDR
- Memory Size:
- 4.5Mbit
- Memory Organization:
- 128K x 36
- Memory Interface:
- Parallel
- Clock Frequency:
- 87 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 8.5 ns
- Voltage - Supply:
- 3.135V ~ 3.465V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
71V3577S85PFG FAQ
1.How can I place an order for 71V3577S85PFG through Aetrix?
Please submit a Request for Quotation (RFQ) for 71V3577S85PFG 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 71V3577S85PFG reliable?
The price and inventory of 71V3577S85PFG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71V3577S85PFG is usually 5 days.
3.What payment methods are accepted for 71V3577S85PFG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71V3577S85PFG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71V3577S85PFG?
71V3577S85PFG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71V3577S85PFG 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 71V3577S85PFG?
For technical support, including 71V3577S85PFG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71V3577S85PFG requirements.
6.How does Aetrix verify that 71V3577S85PFG is sourced from the original manufacturer or authorized distributors?
All 71V3577S85PFG 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 71V3577S85PFG meets industry standards.
7.What is the process for return or replacement of 71V3577S85PFG?
All 71V3577S85PFG units undergo pre-shipment inspection (PSI). If there is an issue with 71V3577S85PFG, 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 71V3577S85PFG part is unused and in its original packaging.
Return procedure for 71V3577S85PFG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
71V3577S85PFG 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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M24C02-FMC6TG
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AT24C04C-SSHM-T
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