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Renesas 71V67703S80PFG8
- Part No.:
- 71V67703S80PFG8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
71V67703S80PFG8.pdf
- Description:
- IC SRAM 9MBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
71V67703S80PFG8 from IDT (now Renesas) is a 256K × 36-bit, 3.3V synchronous SRAM with flow-through outputs, single-cycle deselect, and 8.0 ns access time at 100 MHz clock frequency. It features burst-mode addressing (linear/interleaved), self-timed write with global and byte-level write control, and industrial-grade operation (–40°C to +85°C). Used in high-speed networking buffers and packet processing ASIC/FPGA interfaces.
For engineers reviewing the 71V67703S80PFG8 datasheet, 71V67703S80PFG8 pinout, 71V67703S80PFG8 application, or 71V67703S80PFG8 equivalent, key selection criteria include burst address sequencing (LBO-controlled), 100-pin TQFP package compatibility, flow-through output timing, ZZ sleep mode behavior, and 3.3V core/I/O supply separation.
Technical Context
This SRAM implements a synchronous, clock-driven architecture with registered address, control, and data inputs, but unregistered (flow-through) data outputs-enabling deterministic read latency without output register delay. The internal burst counter advances on ADV assertion and supports four-word bursts defined by LBO polarity.
Write operations are fully synchronous and support multiple granularities: global write (GW), byte write enable (BWE), and individual byte writes (BW1–BW4), all sampled on the rising CLK edge. Power management includes asynchronous ZZ sleep mode that gates internal clocks and reduces current to ≤70 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256K × 36 bits (9Mbit); supports 512K × 18 via pin-compatible variant |
| Access Time / Max Clock | 8.0 ns / 100 MHz - guarantees sub-10ns read-to-data valid for burst reads |
| Supply Voltages | VDD = 3.3 V ±5% (core), VDDQ = 3.3 V ±5% (I/O) - independent rails prevent noise coupling |
| Burst Mode | Linear or interleaved 4-word burst; selected by static LBO pin - no software configuration required |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded systems and telecom infrastructure |
| Package | JEDEC-standard 100-pin TQFP (14 mm × 20 mm) - surface-mount compatible with standard reflow profiles |
| Power-Down Current | IZZ ≤ 70 mA (industrial grade) - enables low-power idle states in always-on systems |
Pinout & Package
71V67703S80PFG8 is packaged in a JEDEC-standard 100-pin thin plastic quad flatpack (TQFP), 14 mm × 20 mm body, 0.5 mm pitch. Pin 1 is marked by corner cut; pin numbering follows standard counter-clockwise convention from top-left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | Synchronous address latching triggered by ADSP/ADSC + CE; A0–A17 used for 256K×36 mode |
| CLK | Clock Input | Rising-edge-triggered timing reference for all synchronous inputs and internal registers |
| CE, CS0, CS1 | Chip Enable / Selects | Three-input chip select logic (CE LOW + CS0 HIGH + CS1 LOW) enables device operation |
| GW, BWE, BW1–BW4 | Write Control Inputs | GW initiates full 36-bit write; BWE enables byte write; BW1–BW4 select 9-bit I/O groups (I/O0–7/I/OP1, etc.) |
| ADV, ADSP, ADSC, LBO | Burst & Address Control | ADV advances burst counter; ADSP/ADSC load address register; LBO selects linear/interleaved burst order (static) |
| OE | Output Enable | Asynchronous control: OE LOW enables flow-through outputs; OE HIGH forces high-Z regardless of clock state |
| ZZ | Sleep Mode Input | Asynchronous HIGH activates full sleep mode - clocks gated, I/O high-Z, current reduced to IZZ |
| I/O0–I/O31, I/OP1–I/OP4 | Data I/O | 36-bit bidirectional bus; input path registered, output path flow-through (no output register delay) |
| VDD, VDDQ, VSS | Power/Ground | VDD (core), VDDQ (I/O), and VSS (ground) require separate decoupling - critical for signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through output architecture | Eliminates output register delay - tCD = 8.0 ns directly from CLK edge, enabling tight timing closure in FPGA-based systems |
| Single-cycle deselect | Device enters high-Z output state within one clock cycle after deselection - prevents bus contention during rapid switching |
| Self-timed write cycle | Internal timing logic resolves write completion without external wait-state generation - simplifies controller interface |
| Configurable burst order (LBO) | LBO pin statically selects linear or interleaved 4-word burst sequence - matches cache line or DMA engine requirements |
| Independent core/I/O supplies | VDD and VDDQ separation allows independent power domain management and noise isolation between logic and I/O |
| Industrial temperature range | –40°C to +85°C operation validated across voltage and frequency corners - suitable for base station and industrial PLC use |
Applications
| High-Speed Network Packet Buffer | FPGA-Based Protocol Accelerator |
|---|---|
|
Use Scenario: Storing ingress/egress Ethernet frames in a 10Gbps line card before classification or forwarding. IC Role / Device Role / Timing Role: Primary buffer memory interfacing directly to MAC-layer logic; provides deterministic 8.0 ns read access for real-time frame inspection. Use Value: Flow-through outputs and single-cycle deselect eliminate pipeline stalls during burst reads and rapid context switches between traffic flows. |
Use Scenario: Offloading TCP/IP checksum, encryption, or header parsing in an FPGA-accelerated server NIC. IC Role / Device Role / Timing Role: Local instruction/data SRAM for soft-core processor or lookup table storage; synchronized to FPGA fabric clock. Use Value: 100 MHz clock support and burst-mode addressing reduce per-word access overhead by 75% vs. random access. |
| Telecom Baseband Processing | Industrial Motion Controller Buffer |
|
Use Scenario: Holding intermediate FFT or filter coefficients in a wireless baseband processor for LTE/5G physical layer. IC Role / Device Role / Timing Role: Low-latency coefficient store accessed by DSP subsystem; operates at 100 MHz with strict jitter tolerance. Use Value: Independent VDD/VDDQ rails suppress switching noise coupling from I/O into sensitive analog/RF sections. |
Use Scenario: Buffering position feedback data and motion profile commands in a servo drive with real-time EtherCAT interface. IC Role / Device Role / Timing Role: Deterministic memory for cyclic process data exchange; must sustain burst reads/writes under –40°C cold start. Use Value: Industrial temperature qualification and ZZ sleep mode enable energy-efficient operation during motor idle periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1371BV33-100AXC | 256K × 36, 100 MHz, 3.3V, 100-pin TQFP - identical organization and speed; different burst control (MODE pin vs. LBO) | Requires MODE pin configuration for burst order; lacks ZZ sleep mode - higher standby power in idle states | Preferred when legacy Cypress design reuse is prioritized; verify burst timing alignment with existing controller firmware |
| AS7C3256B-10JIN | 256K × 36, 100 MHz, 3.3V, 100-pin TQFP - same pinout; no LBO or ADV pins - fixed linear burst only | No interleaved burst support; no ZZ sleep mode; lower IDD (210 mA vs. 230 mA) but no deep power-down capability | Selected for cost-sensitive industrial controllers where burst flexibility and ultra-low sleep current are not required |
Compared with CY7C1371BV33-100AXC and AS7C3256B-10JIN, the 71V67703S80PFG8 uniquely delivers configurable burst order via LBO and guaranteed low-current sleep mode (IZZ ≤ 70 mA), making it optimal for thermally constrained, always-on telecom and automation systems.
Availability
71V67703S80PFG8 is available at Aetrix Electronics and suitable for high-speed networking equipment, FPGA co-processing modules, and industrial motion control systems requiring stable component supply across extended product lifecycles.
Supply support for 71V67703S80PFG8 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, designs high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.
The 71V67703S80PFG8 belongs to IDT's high-speed synchronous SRAM product line, engineered specifically for low-latency, burst-oriented data buffering in network infrastructure and real-time embedded systems.
FAQ
What is the maximum operating frequency and corresponding access time for the 71V67703S80PFG8?
The 71V67703S80PFG8 supports up to 100 MHz clock frequency with an 8.0 ns access time (tCD), as specified in commercial and industrial temperature ranges. This timing is guaranteed under VDD = 3.3 V ±5%, VDDQ = 3.3 V ±5%, and load conditions per JEDEC AC test setup. The 71V67703S80PFG8 does not support 117 MHz operation - that speed grade applies only to the 7.5 ns variant (e.g., 71V67703S75PFG8).
How does the LBO pin affect burst addressing behavior in the 71V67703S80PFG8?
In the 71V67703S80PFG8, the LBO (Linear Burst Order) pin is a static DC input that selects burst sequence: LBO = LOW enables linear addressing (00→01→10→11), while LBO = HIGH enables interleaved addressing (00→01→11→10). The 71V67703S80PFG8 requires LBO to remain stable during operation - changing it mid-burst causes undefined address sequencing and potential data corruption.
Does the 71V67703S80PFG8 support byte-write functionality, and how is it implemented?
Yes, the 71V67703S80PFG8 supports granular byte writes via four dedicated BW1–BW4 inputs, each controlling a 9-bit segment (BW1 → I/O0–7 + I/OP1, etc.). Byte writes require BWE = LOW and GW = HIGH; asserting any BWx disables all outputs during the write cycle. This enables partial 36-bit word updates without disturbing adjacent bytes - critical for protocol header manipulation in networking applications.
What is the function of the ZZ pin, and what power savings does it provide in the 71V67703S80PFG8?
The ZZ pin in the 71V67703S80PFG8 is an asynchronous sleep mode input: ZZ = HIGH gates the internal clock distribution network and places the device in full sleep mode, reducing supply current to ≤70 mA (industrial grade). Data retention is guaranteed during sleep. Recovery requires tZZR ≥ 100 ns after ZZ returns LOW and the device must be deselected before exiting sleep - a key timing constraint for power-aware system firmware.
Is the 71V67703S80PFG8 pin-compatible with the 71V67903 series, and what are the key differences?
No, the 71V67703S80PFG8 is not fully pin-compatible with the 71V67903 series. While both share the 100-pin TQFP package and core signal mapping, the 71V67903 omits BW3 and BW4 pins (not applicable per datasheet note), repurposing those locations as NC. Additionally, the 71V67903 is organized as 512K × 18 - requiring different address decoding and burst counter behavior. Interchangeability is not supported without PCB and firmware revision.
71V67703S80PFG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Synchronous, SDR
- Memory Size:
- 9Mbit
- Memory Organization:
- 256K x 36
- Memory Interface:
- Parallel
- Clock Frequency:
- 100 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 8 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)
71V67703S80PFG8 FAQ
1.How can I place an order for 71V67703S80PFG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 71V67703S80PFG8 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 71V67703S80PFG8 reliable?
The price and inventory of 71V67703S80PFG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71V67703S80PFG8 is usually 5 days.
3.What payment methods are accepted for 71V67703S80PFG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71V67703S80PFG8 transactions.
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4.How is shipping managed for 71V67703S80PFG8?
71V67703S80PFG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71V67703S80PFG8 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 71V67703S80PFG8?
For technical support, including 71V67703S80PFG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71V67703S80PFG8 requirements.
6.How does Aetrix verify that 71V67703S80PFG8 is sourced from the original manufacturer or authorized distributors?
All 71V67703S80PFG8 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 71V67703S80PFG8 meets industry standards.
7.What is the process for return or replacement of 71V67703S80PFG8?
All 71V67703S80PFG8 units undergo pre-shipment inspection (PSI). If there is an issue with 71V67703S80PFG8, 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 71V67703S80PFG8 part is unused and in its original packaging.
Return procedure for 71V67703S80PFG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
71V67703S80PFG8 Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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