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Renesas 71V3558S100PFGI
- Part No.:
- 71V3558S100PFGI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
71V3558S100PFGI.pdf
- Description:
- IC SRAM 4.5MBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,496
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Product details
Overview
71V3558S100PFGI from IDT (now Renesas) is a 3.3V synchronous ZBT™ SRAM with 256K × 18-bit organization (4.5 Mbit), 100 MHz clock speed, 3.5 ns clock-to-data access, zero bus turnaround architecture, and JEDEC-standard 100-pin TQFP package. It enables high-throughput memory interfacing in network packet buffers and telecom line cards where write-read transitions must occur without dead cycles.
For engineers reviewing the 71V3558S100PFGI datasheet, 71V3558S100PFGI pinout, 71V3558S100PFGI application, or 71V3558S100PFGI equivalent, key selection criteria include burst-mode support (linear/interleaved), individual byte write control (BW1–BW4), three chip enables for depth expansion, JTAG boundary scan capability, and industrial temperature operation (–40°C to +85°C).
Technical Context
The 71V3558S100PFGI implements a fully pipelined synchronous interface with positive-edge-triggered address, data, and control registers. Its ZBT™ architecture eliminates bus turnaround latency by allowing immediate read-after-write or write-after-read transitions without idle cycles.
It integrates an on-chip 4-word burst counter controlled by ADV/LD and LBO pins, supports interleaved or linear burst sequences, and features internally synchronized output enable-removing external OE timing constraints. The device uses separate 3.3V core (VDD) and I/O (VDDQ) supplies with ±5% tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256K × 18-bit (4.5 Mbit); supports x18 configuration in 100-pin TQFP package |
| Clock Frequency | 100 MHz maximum; enables 10 ns clock period for deterministic timing in high-speed bus systems |
| Access Time | 3.5 ns clock-to-data (tCD); guarantees data valid within 3.5 ns after rising CLK edge for timing-critical pipelines |
| Supply Voltage | VDD = 3.3 V ±5%, VDDQ = 3.3 V ±5%; dual-rail design isolates core logic noise from I/O switching transients |
| Operating Temperature | –40°C to +85°C industrial grade; qualified for base station, router, and industrial control environments |
| Burst Capability | 4-word burst (linear or interleaved); reduces address bus traffic and improves throughput in sequential access patterns |
| Byte Write Control | BW1–BW4 active-low enables; allows independent 9-bit byte writes without masking logic or additional glue logic |
Pinout & Package
71V3558S100PFGI is packaged in a JEDEC-standard 100-pin thin quad flatpack (TQFP), 14 mm × 20 mm body, lead-free and RoHS-compliant (PFGI suffix). Pinout matches PKG100 footprint for 256K × 18 configuration per datasheet revision Aug.06.21.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | Synchronous inputs; 18-bit address bus supporting 256K depth (A0–A17 required) |
| CE1, CE2, CE2 | Chip Enables | Three independent enables (CE1/CE2 low-active, CE2 high-active); enable depth expansion without external decoding |
| R/W | Read/Write Control | Synchronous signal defining cycle type; sampled at rising CLK to initiate read or write two cycles later |
| ADV/LD | Advance Burst / Load Address | Controls burst counter (HIGH) or loads new external address (LOW); determines burst vs. random access mode |
| LBO | Linear/Interleaved Burst Order | Static input selecting burst sequence; LOW = linear, HIGH = interleaved; must remain stable during operation |
| BW1–BW4 | Byte Write Enables | Active-low per-byte controls for I/O[0:7]/I/OP1 through I/O[24:31]/I/OP4; enables partial-word writes |
| I/O0–I/O15, I/OP1–I/OP2 | Data I/O (x18 mode) | 18-bit bidirectional data bus (16 data + 2 parity); registered I/O paths ensure clean setup/hold timing |
| CLK | System Clock Input | Primary timing reference; all synchronous operations triggered on rising edge; OE is sole asynchronous signal |
Key Features
| Feature | Design Value |
|---|---|
| ZBT™ Zero Bus Turnaround | Eliminates dead cycles between read/write transitions-enables continuous back-to-back memory transactions in packet processing engines |
| Internally Synchronized OE | Removes need for external OE timing control; outputs automatically tri-state when not selected, simplifying system-level timing closure |
| 4-Word Burst Counter | Reduces address bus activity by 75% for sequential accesses; configurable via LBO pin for linear (cache-friendly) or interleaved (DMA-optimized) order |
| Three Independent Chip Enables | Supports seamless memory depth expansion up to 8 devices without external logic; CE2 polarity inversion adds flexibility in decode schemes |
| JTAG Boundary Scan (IEEE 1149.1) | Enables board-level testability and interconnect verification; optional TRST pin available in BGA variants (not present in TQFP 71V3558S100PFGI) |
Applications
| Network Packet Buffering | Telecom Line Card Memory |
|---|---|
Use Scenario: Storing and forwarding variable-length Ethernet/IP packets in switch ASIC interfaces. IC Role / Device Role / Timing Role: High-speed, low-latency buffer memory with zero-turnaround writes to accept ingress traffic while simultaneously servicing egress reads. Use Value: 3.5 ns tCD and ZBT™ architecture sustain >95% bus utilization under mixed read/write workloads typical of cut-through switching. |
Use Scenario: Frame buffering in OC-48/STM-16 SONET/SDH line cards requiring deterministic latency and burst efficiency. IC Role / Device Role / Timing Role: Synchronous SRAM acting as dual-port-accessible FIFO with programmable burst depth for ATM cell assembly/disassembly. Use Value: 4-word burst mode reduces address strobes by 4×, lowering bus contention and easing timing margin on 100 MHz backplane interfaces. |
| Industrial PLC Data Logging | Medical Imaging Pipeline Buffer |
Use Scenario: Real-time acquisition and timestamped storage of sensor data streams in ruggedized programmable logic controllers. IC Role / Device Role / Timing Role: Industrial-grade memory buffer interfacing with microcontroller DMA engines operating at 100 MHz. Use Value: –40°C to +85°C rating and robust 3.3V supply tolerance ensure reliable operation in uncontrolled cabinet environments. |
Use Scenario: Pixel-line buffering in digital X-ray or MRI subsystems where pipeline continuity and jitter-free data flow are critical. IC Role / Device Role / Timing Role: Pipelined SRAM providing glitch-free, clock-aligned data staging between ADC and FPGA image processors. Use Value: Registered I/O and synchronous OE eliminate metastability risks and simplify timing analysis in multi-clock-domain medical imaging systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1371DV33-100BZI | 128K × 32-bit, 100 MHz, 3.3V; no ZBT™, uses conventional burst mode with turnaround penalty | Lacks zero-turnaround capability; requires additional wait states in mixed R/W traffic | Choose when ZBT™ is unnecessary and x32 bus width better matches host interface |
| AS7C3256A-10JIN | 32K × 8-bit, 10 ns async access, 3.3V; asynchronous interface, no burst counter or pipelining | No clocked interface or burst capability; suited for simple microcontroller-based systems | Choose only for cost-sensitive, low-bandwidth applications where synchronous timing and burst efficiency are not required |
Compared with CY7C1371DV33-100BZI and AS7C3256A-10JIN, the 71V3558S100PFGI delivers deterministic zero-turnaround performance essential for real-time packet buffering, while its 256K × 18 organization and industrial temperature range provide superior fit for telecom and industrial embedded designs demanding both bandwidth and reliability.
Availability
71V3558S100PFGI is available at Aetrix Electronics and suitable for network packet buffering, telecom line card memory, and industrial PLC data logging requiring stable component supply across extended product lifecycles.
Supply support for 71V3558S100PFGI 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
IDT (Integrated Device Technology), now part of Renesas Electronics, is a semiconductor company specializing in high-performance timing, memory interface, and RF solutions for communications and computing infrastructure.
The 71V3558S100PFGI belongs to IDT's ZBT™ SRAM product line, engineered specifically for high-throughput, low-latency memory subsystems in networking, telecom, and industrial real-time systems where bus efficiency and deterministic timing are critical.
FAQ
What is the memory organization and density of the 71V3558S100PFGI?
The 71V3558S100PFGI is configured as 256K × 18-bit, delivering 4.5 Mbit (4,718,592-bit) total capacity. This x18 organization is implemented in the 100-pin TQFP package, with address lines A0–A17 fully utilized and I/O pins assigned to I/O0–I/O15 plus I/OP1–I/OP2 for parity support. It is distinct from the 128K × 36 variant (71V3556S) also offered in the same family.
Does the 71V3558S100PFGI support JTAG boundary scan?
The 71V3558S100PFGI is the "S" version, which does not include JTAG functionality. JTAG (TMS, TDI, TCK, TDO, TRST) is only available in the "SA" variant (e.g., 71V3558SA). The 71V3558S100PFGI pinout reserves those locations as NC (no-connect), and the internal TAP controller is absent-confirmed by datasheet section "Pin Definition" and functional block diagrams for the "S" series.
What is the role of the LBO pin on the 71V3558S100PFGI?
The LBO (Linear/Interleaved Burst Order) pin on the 71V3558S100PFGI selects the 4-word burst addressing sequence: LOW configures linear order (A0, A1, A2, A3), while HIGH selects interleaved order (A0, A2, A1, A3). It is a static input-must remain stable during burst operation-and directly controls the on-chip burst counter's increment logic per datasheet Table 10 and Table 11.
How does the ZBT™ feature improve system performance in the 71V3558S100PFGI?
The ZBT™ (Zero Bus Turnaround) feature in the 71V3558S100PFGI eliminates mandatory idle cycles between consecutive read and write operations. Unlike conventional SRAMs requiring bus turnaround time, the 71V3558S100PFGI permits immediate read-after-write or write-after-read transitions-enabling sustained 100% bus utilization in high-throughput applications like packet buffering and frame assembly.
What are the power supply requirements for the 71V3558S100PFGI?
The 71V3558S100PFGI requires two independent 3.3V supplies: VDD (core logic, 3.3 V ±5%) and VDDQ (I/O drivers, 3.3 V ±5%). Both rails must be within specification during operation; absolute maximum ratings allow VDDQ up to VDDQ +0.5 V, but recommended operation strictly maintains matched 3.3V ±5% tolerances per datasheet Table 05 and Table 04.
71V3558S100PFGI 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 (ZBT)
- Memory Size:
- 4.5Mbit
- Memory Organization:
- 256K x 18
- Memory Interface:
- Parallel
- Clock Frequency:
- 100 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 5 ns
- Voltage - Supply:
- 3.135V ~ 3.465V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
71V3558S100PFGI FAQ
1.How can I place an order for 71V3558S100PFGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 71V3558S100PFGI 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 71V3558S100PFGI reliable?
The price and inventory of 71V3558S100PFGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71V3558S100PFGI is usually 5 days.
3.What payment methods are accepted for 71V3558S100PFGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71V3558S100PFGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71V3558S100PFGI?
71V3558S100PFGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71V3558S100PFGI 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 71V3558S100PFGI?
For technical support, including 71V3558S100PFGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71V3558S100PFGI requirements.
6.How does Aetrix verify that 71V3558S100PFGI is sourced from the original manufacturer or authorized distributors?
All 71V3558S100PFGI 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 71V3558S100PFGI meets industry standards.
7.What is the process for return or replacement of 71V3558S100PFGI?
All 71V3558S100PFGI units undergo pre-shipment inspection (PSI). If there is an issue with 71V3558S100PFGI, 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 71V3558S100PFGI part is unused and in its original packaging.
Return procedure for 71V3558S100PFGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
71V3558S100PFGI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
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