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Renesas 709079S12PF8
- Part No.:
- 709079S12PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
709079S12PF8.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,554
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Product details
Overview
709079S12PF8 from Integrated Device Technology is a 32K × 8-bit synchronous dual-port static RAM with true dual-ported memory cells enabling simultaneous access to the same address from left and right ports, 12ns max clock-to-data access (pipelined mode), 20ns cycle time at 50MHz, industrial temperature range (–40°C to +85°C), and TTL-compatible 5V ±10% supply - used in real-time DSP co-processing and FPGA-based data buffering where deterministic latency and port independence are critical.
For engineers reviewing the 709079S12PF8 datasheet, 709079S12PF8 pinout, 709079S12PF8 application, or 709079S12PF8 equivalent, key selection considerations include pipelined vs. flow-through output timing modes, dual chip enable depth expansion capability, counter-enabled burst addressing, self-timed write operation, and industrial-grade power-down behavior (1mW standby for S/L variants).
Technical Context
This device implements fully synchronous dual-port architecture with independent clocked registers on all address, data, and control inputs (4ns setup / 1ns hold), supporting concurrent read/write operations across ports without arbitration logic. Its internal address counter-enabled via CNTEN and reset via CNTRST-allows automatic sequential addressing during burst transfers.
The FT/PIPE pin configures each port independently for either flow-through (tCD1 = 25ns max) or pipelined (tCD2 = 12ns max) output mode, while dual CE0/CE1 enables permit per-port power gating and seamless depth expansion without external logic. All I/Os are TTL-compatible with VCC = 5V ±10%.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 32K × 8-bit (256Kb total); supports 32,768 independent 8-bit words accessible simultaneously from both ports |
| Cycle Time (Pipelined) | 20ns max; enables 50MHz sustained operation with deterministic 1-cycle pipeline latency |
| Access Time (Pipelined) | 12ns max clock-to-data; guarantees sub-13ns data valid window for tight timing closure in high-speed interfaces |
| Supply Voltage | 5.0V ±10% (4.5V–5.5V); compatible with legacy 5V TTL bus systems without level translation |
| Operating Temperature | –40°C to +85°C; qualified for industrial environments including motor control and telecom infrastructure |
| Standby Current | 1mA typ. (ISB3, full CMOS standby); enables ultra-low-power sleep states during idle periods |
| Package | 100-pin TQFP (PN100); 14mm × 14mm body with 0.5mm pitch - standard surface-mount footprint for automated assembly |
Pinout & Package
100-pin Thin Quad Flatpack (TQFP), PN100 package; body size 14mm × 14mm × 1.4mm; all VCC and GND pins must be connected per datasheet requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A14L, A0R–A14R | Address Inputs (Left/Right) | 15-bit address buses per port; A15 is NC for IDT709079 (confirms 32K addressing) |
| I/O0L–I/O7L, I/O0R–I/O7R | Bidirectional Data I/O (Left/Right) | 8-bit parallel data paths; high-impedance when OE inactive or CE disabled |
| CLKL, CLKR | Port Clock Inputs | Rising-edge-triggered clocks; fully independent timing domains per port |
| R/WL, R/WR | Read/Write Control | Active-high write enable; determines direction of data transfer on respective port |
| OEL, OER | Output Enable | Asynchronous control; overrides clock timing to tri-state outputs immediately |
| CE0L/CE1L, CE0R/CE1R | Dual Chip Enables | Per-port activation logic: CE0L=LOW & CE1L=HIGH enables left port; allows depth expansion without glue logic |
| FT/PIPEL, FT/PIPER | Output Mode Select | DC-configurable per port: LOW = flow-through (tCD1), HIGH = pipelined (tCD2) |
| CNTENL/CNTRSTL, CNTENR/CNTRSTR | Counter Control | Enable and reset internal address counter for burst-mode sequential access |
| ADSL, ADSR | Address Strobe | Asynchronous load signal; captures address on rising CLK edge regardless of CNTEN state |
| VCC, GND | Power & Ground | Multiple dedicated pins ensure low-noise supply distribution; all must be connected |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables concurrent read/write to identical memory locations without arbitration delay or collision handling logic |
| Pipelined Output Mode | Reduces effective access latency to 12ns with 1-cycle pipeline, enabling 50MHz continuous throughput |
| Dual Independent Chip Enables | Supports seamless depth expansion of multiple devices using only CE0/CE1 signals - no external decoding required |
| Integrated Address Counter | Eliminates external counter logic in burst applications; advances address automatically on each clock when CNTEN asserted |
| Self-Timed Write Cycle | Guarantees reliable write completion independent of clock duty cycle or skew, simplifying timing margin analysis |
| Industrial Temperature Support | Validated operation from –40°C to +85°C ensures reliability in harsh environments like factory automation and base stations |
Applications
| Real-Time DSP Co-Processing | FPGA-Based Data Buffering |
|---|---|
Use Scenario: Bidirectional data exchange between DSP core and peripheral subsystems (e.g., ADC/DAC, serial interfaces) requiring zero-wait-state memory access. IC Role / Device Role / Timing Role: Shared memory buffer with independent left/right ports acting as interface between DSP instruction/data buses and external I/O controllers. Use Value: Simultaneous read from one port and write to the other eliminates pipeline stalls, sustaining 50MHz throughput without software-managed handshaking. | Use Scenario: High-bandwidth streaming between FPGA fabric and external memory or communication PHYs (e.g., Gigabit Ethernet MAC, PCIe endpoint). IC Role / Device Role / Timing Role: Synchronous dual-port SRAM serving as elastic buffer between asynchronous clock domains (FPGA logic clock vs. PHY reference clock). Use Value: Eliminates need for complex FIFO logic or clock-domain-crossing circuits by providing hardware-coherent dual-clock access to shared data space. |
| Motor Control Feedback Loop | Telecom Line Card Buffering |
Use Scenario: Real-time storage of position/speed sensor samples and PWM command history in closed-loop servo drives operating at >20kHz update rates. IC Role / Device Role / Timing Role: Deterministic-latency memory for time-critical feedback path; left port writes sensor data, right port reads for PID computation. Use Value: 12ns pipelined access ensures control loop execution completes within strict jitter budgets (<100ns), maintaining stability under dynamic load. | Use Scenario: Packet buffering in carrier-grade line cards handling multiple TDM/E1 or VoIP streams with strict jitter and latency constraints. IC Role / Device Role / Timing Role: Shared buffer between network processor (left port) and framer/digital signal processor (right port) in multi-service access platforms. Use Value: Dual CE enables allow dynamic allocation of memory banks across services; industrial temp rating ensures uptime in uncooled central office cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C028V-15AXC | 15ns max access, 32K × 16-bit organization, 3.3V supply only | Requires voltage translation for 5V systems; wider data bus suits different controller interfaces | Select when 16-bit data path and 3.3V ecosystem alignment outweigh 5V compatibility needs |
| IDT70V9089S12PF | Same 32K × 8-bit size and 12ns speed, but uses lower-power 3.3V core with 5V-tolerant I/O | Reduced active power (≈450mW) but requires mixed-voltage board design | Prefer for new designs targeting lower thermal footprint where 3.3V/5V interface support is available |
Compared with CY7C028V-15AXC and IDT70V9089S12PF, the 709079S12PF8 provides native 5V operation and industrial temperature support without voltage translation or mixed-supply complexity - making it optimal for legacy industrial control upgrades and cost-sensitive 5V systems.
Availability
709079S12PF8 is available at Aetrix Electronics and suitable for real-time DSP co-processing, FPGA-based data buffering, motor control feedback loops, and telecom line card buffering requiring stable component supply across extended product lifecycles.
Supply support for 709079S12PF8 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
Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and power management ICs for communications, computing, and industrial markets.
The IDT7090xx family was designed specifically for high-reliability, low-latency dual-access memory applications in FPGA, DSP, and microcontroller-based systems requiring deterministic timing and industrial-grade robustness.
FAQ
What is the maximum operating frequency of the 709079S12PF8 in pipelined mode?
The 709079S12PF8 supports up to 50MHz operation in pipelined output mode, derived from its 20ns maximum clock cycle time (tCYC2). This frequency is guaranteed across the full industrial temperature range (–40°C to +85°C) and 4.5V–5.5V supply, with all timing parameters validated under worst-case conditions per the datasheet's AC Electrical Characteristics table.
Does the 709079S12PF8 support independent output timing modes on each port?
Yes, the 709079S12PF8 provides independent FT/PIPE control per port: FT/PIPEL configures the left port and FT/PIPER configures the right port. This allows one port to operate in pipelined mode (12ns tCD2) while the other uses flow-through (25ns tCD1), enabling asymmetric interface optimization - for example, high-speed CPU access on one side and slower peripheral handshake on the other.
How does the address counter function in the 709079S12PF8, and what signals control it?
The 709079S12PF8 includes a per-port address counter controlled by CNTENL/CNTENR (enable) and CNTRSTL/CNTRSTR (reset). When CNTEN is asserted low on the rising CLK edge, the counter advances to the next address regardless of ADS state. A low pulse on CNTRST resets the counter to address 0. This feature eliminates external counter logic in burst-transfer applications such as DMA or serial data capture.
What power-saving features does the 709079S12PF8 offer, and how are they activated?
The 709079S12PF8 offers multiple power-saving states: full standby (1mW typ.) activates when both CE0 and CE1 are held at CMOS high/low thresholds (CE0 > VCC−0.2V and CE1 < 0.2V); per-port standby (130mA typ. ISB4) engages when one port is enabled and the other disabled. These states require no clock activity and maintain data retention - critical for low-duty-cycle industrial monitoring systems.
Is the 709079S12PF8 pin-compatible with other members of the IDT7090xx family?
The 709079S12PF8 shares the same 100-pin TQFP (PN100) package and pinout with IDT709089S12PF8 and IDT709079L12PF8, differing only in power profile (S = standard, L = low). However, it is not pin-compatible with IDT709089 variants due to A15 pin assignment (NC in 709079, functional in 709089), confirming its 32K × 8-bit capacity versus 64K × 8-bit.
709079S12PF8 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 - Dual Port, Synchronous
- Memory Size:
- 256Kbit
- Memory Organization:
- 32K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 12 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
709079S12PF8 FAQ
1.How can I place an order for 709079S12PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 709079S12PF8 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 709079S12PF8 reliable?
The price and inventory of 709079S12PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 709079S12PF8 is usually 5 days.
3.What payment methods are accepted for 709079S12PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 709079S12PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 709079S12PF8?
709079S12PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 709079S12PF8 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 709079S12PF8?
For technical support, including 709079S12PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 709079S12PF8 requirements.
6.How does Aetrix verify that 709079S12PF8 is sourced from the original manufacturer or authorized distributors?
All 709079S12PF8 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 709079S12PF8 meets industry standards.
7.What is the process for return or replacement of 709079S12PF8?
All 709079S12PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 709079S12PF8, 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 709079S12PF8 part is unused and in its original packaging.
Return procedure for 709079S12PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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