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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Renesas 709289L12PFI

Name: 709289L12PFI
Brand: Renesas
SKU: 709289L12PFI
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 709289L12PFI

Manufacturer:: Renesas

Category:: Memory

Package:: 100-LQFP

Datasheet:: 709289L12PFI.pdf

Description:: IC SRAM 1MBIT PARALLEL 100TQFP

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Product details

Overview

IDT709289L12PFI from Integrated Device Technology is a high-speed 64K × 16-bit synchronous pipelined dual-port static RAM with true dual-ported memory cells enabling simultaneous access to the same address from both ports, 12 ns clock-to-data access in pipelined mode, and industrial temperature support (–40°C to +85°C), used in real-time DSP co-processing and FPGA-based communication protocol bridging.

For engineers reviewing the IDT709289L12PFI datasheet, IDT709289L12PFI pinout, IDT709289L12PFI application, or IDT709289L12PFI equivalent, this page delivers verified timing parameters, validated dual-port control logic, confirmed TQFP-100 package mapping, and precise industrial-grade DC/AC electrical behavior per IDT DSC-4842/7 (Feb 2015).

Technical Context

The IDT709289L12PFI implements fully synchronous operation on both left and right ports with 4 ns setup and 0 ns hold time for all inputs, using edge-triggered registers for address, data, and control signals. Its self-timed write architecture enables fast cycle times independent of clock low time.

It supports two output modes-flow-through (tCD1 ≤ 25 ns) and pipelined (tCD2 ≤ 12 ns)-selected per port via dedicated FT/PIPE pins, and includes independent address counters with ADS/CNTEN/CNTRST control for burst-addressing applications such as packet buffering in telecom line cards.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	64K × 16-bit (1 Mbit total), enabling 16-bit parallel data transfers per access on each port
Clock Cycle Time (Pipelined)	20 ns max (50 MHz), supporting high-throughput FIFO and buffer applications requiring deterministic latency
Access Time (Pipelined)	12 ns max clock-to-data-out, meeting tight timing budgets in FPGA-to-ASIC handshake interfaces
Supply Voltage	5.0 V ±10%, compatible with legacy TTL-level system rails without level-shifting circuitry
Operating Temperature	–40°C to +85°C industrial grade, qualified for deployment in base station and industrial control environments
Power Consumption	230 mA typical dynamic current (both ports active), 0.5 mA full standby current, enabling low-power idle states
Package	100-pin Thin Quad Flatpack (TQFP), 14 mm × 14 mm body, surface-mount compatible with standard reflow profiles

Pinout & Package

Package: 100-pin TQFP (PN100), body size 14 mm × 14 mm × 1.4 mm, with 4 ground and 4 V_CC pins distributed for low-noise power delivery.

Pin/Terminal	Circuit Role	Design Meaning
A0L–A15L / A0R–A15R	Address Inputs (Left/Right)	16-bit address bus per port; supports independent addressing for concurrent read/write operations
I/O0L–I/O15L / I/O0R–I/O15R	Bidirectional Data I/O (Left/Right)	16-bit multiplexed data path per port; separate upper/lower byte enables (UBL/LBL, UBR/LBR) allow partial-word access
CLKL / CLKR	Clock Inputs (Left/Right)	Rising-edge-triggered synchronous interface; enables strict timing control for deterministic pipeline staging
CE0L/CE1L / CE0R/CE1R	Dual Chip Enables (Left/Right)	Independent port power-down control; CE0 = VIH or CE1 = VIL disables internal circuitry, reducing standby current to ≤3 mA
R/WL / R/WR	Read/Write Control (Left/Right)	Active-high write enable; combined with OE and byte selects, defines exact memory transaction type per cycle
OEL / OER	Output Enable (Left/Right)	Asynchronous control; allows output tri-state independent of clock edge, easing integration with legacy asynchronous buses
FT/PIPEL / FT/PIPER	Output Mode Select (Left/Right)	Configures port-specific output behavior: VIH = pipelined (1-cycle latency), VIL = flow-through (0-cycle latency)
ADSL / ADSR	Address Strobe (Left/Right)	Latches external address on rising CLK when asserted low; enables external address loading while counter is active
CNTENL / CNTENR	Counter Enable (Left/Right)	Enables automatic address increment on rising CLK; supports burst-mode sequential access without host CPU intervention
CNTRSTL / CNTRSTR	Counter Reset (Left/Right)	Synchronously resets internal address counter to 0x0000 on rising CLK; no dead cycle, allowing immediate subsequent access

Key Features

Feature	Design Value
True dual-port architecture	Simultaneous independent read/write access to identical memory locations from left and right ports, eliminating arbitration overhead in master-slave interconnects
Pipelined output mode	Guaranteed 12 ns tCD2 (clock-to-data valid) enables 50 MHz sustained throughput in burst-buffer applications like Ethernet MAC FIFOs
Separate upper/lower byte controls	UBL/LBL and UBR/LBR pins permit 8-bit sub-word writes without read-modify-write cycles, critical for protocol header manipulation
Dual chip enables per port	CE0/CE1 logic allows depth expansion of multiple IDT709289L devices without external decoding logic, simplifying multi-Mbit memory banks
Industrial temperature range	–40°C to +85°C operation with validated AC/DC parameters ensures reliability in outdoor telecom and factory automation equipment

Applications

Telecom Line Card Buffering	FPGA-DSP Co-Processing Interface
Use Scenario: Real-time packet buffering between framer ASIC and traffic manager in OC-48 line cards. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-wait-state shared memory between ingress and egress data paths, synchronized to independent clock domains. Use Value: Simultaneous access eliminates serialization bottlenecks, sustaining 2.5 Gbps line-rate throughput with <10 ns inter-port delay (tCWDD ≤ 40 ns).	Use Scenario: High-bandwidth data exchange between Xilinx Virtex FPGA and TI C6000 DSP in radar signal processing subsystems. IC Role / Device Role / Timing Role: Serves as ping-pong buffer with pipelined outputs, enabling deterministic 12 ns data availability for DSP instruction fetch pipelines. Use Value: 12 ns tCD2 and 20 ns tCYC2 meet FPGA-to-DSP handshaking requirements without added wait states, improving FFT computation efficiency.
Industrial PLC Motion Control	Avionics Data Concentrator
Use Scenario: Shared memory between ARM Cortex-M7 motion controller and FPGA-based servo drive interface in CNC machines. IC Role / Device Role / Timing Role: Provides deterministic, low-latency memory access across heterogeneous processors operating at different clock frequencies. Use Value: Industrial temperature rating (–40°C to +85°C) and 0 ns hold time ensure robust operation in uncontrolled factory environments with minimal timing margin loss.	Use Scenario: Time-critical sensor fusion buffer in DO-254-compliant flight control computers aggregating inertial, GPS, and air data inputs. IC Role / Device Role / Timing Role: Acts as fault-tolerant dual-port memory with independent port reset (CNTRST) and counter enable (CNTEN) for deterministic data staging. Use Value: Full synchronous design with 4 ns setup time and guaranteed tCCS (clock-to-clock setup ≤15 ns) satisfies avionics timing certification requirements.

Telecom Line Card Buffering

FPGA-DSP Co-Processing Interface

Use Scenario: Real-time packet buffering between framer ASIC and traffic manager in OC-48 line cards.

IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-wait-state shared memory between ingress and egress data paths, synchronized to independent clock domains.

Use Value: Simultaneous access eliminates serialization bottlenecks, sustaining 2.5 Gbps line-rate throughput with <10 ns inter-port delay (tCWDD ≤ 40 ns).

Use Scenario: High-bandwidth data exchange between Xilinx Virtex FPGA and TI C6000 DSP in radar signal processing subsystems.

IC Role / Device Role / Timing Role: Serves as ping-pong buffer with pipelined outputs, enabling deterministic 12 ns data availability for DSP instruction fetch pipelines.

Use Value: 12 ns tCD2 and 20 ns tCYC2 meet FPGA-to-DSP handshaking requirements without added wait states, improving FFT computation efficiency.

Industrial PLC Motion Control

Avionics Data Concentrator

Use Scenario: Shared memory between ARM Cortex-M7 motion controller and FPGA-based servo drive interface in CNC machines.

IC Role / Device Role / Timing Role: Provides deterministic, low-latency memory access across heterogeneous processors operating at different clock frequencies.

Use Value: Industrial temperature rating (–40°C to +85°C) and 0 ns hold time ensure robust operation in uncontrolled factory environments with minimal timing margin loss.

Use Scenario: Time-critical sensor fusion buffer in DO-254-compliant flight control computers aggregating inertial, GPS, and air data inputs.

IC Role / Device Role / Timing Role: Acts as fault-tolerant dual-port memory with independent port reset (CNTRST) and counter enable (CNTEN) for deterministic data staging.

Use Value: Full synchronous design with 4 ns setup time and guaranteed tCCS (clock-to-clock setup ≤15 ns) satisfies avionics timing certification requirements.

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-12AXC	3.3 V supply, 100-pin TQFP, 12 ns access, but lacks address counter and ADS strobe functionality	Requires external logic for burst addressing; unsuitable for counter-driven DMA applications	Select IDT709289L12PFI when integrated address counter and ADS-controlled external address loading are required
AS7C364000B-12TIN	5 V supply, 100-pin TQFP, 12 ns access, but only flow-through output mode (no pipelined option)	Higher tCD1 (25 ns) increases latency in high-frequency pipelined systems	Choose IDT709289L12PFI where pipelined mode (tCD2 = 12 ns) is mandatory for meeting 50 MHz timing closure

Compared with CY7C028V-12AXC and AS7C364000B-12TIN, the IDT709289L12PFI uniquely combines industrial temperature support, dual output modes, and integrated address counter - making it the only option among the three that satisfies simultaneous low-latency access, burst addressing, and extended environmental qualification.

Availability

IDT709289L12PFI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLC, and avionics data concentrator applications requiring stable component supply across extended product lifecycles.

Supply support for IDT709289L12PFI 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) is a fabless semiconductor company specializing in timing, memory interface, and RF solutions for communications, computing, and industrial markets.

The IDT709289L product line delivers high-speed synchronous dual-port SRAMs optimized for real-time inter-processor communication, protocol bridging, and burst-buffering in systems demanding deterministic latency and industrial reliability.

FAQ

What is the maximum operating frequency of the IDT709289L12PFI in pipelined mode?

The IDT709289L12PFI supports up to 50 MHz operation in pipelined mode, derived from its 20 ns maximum clock cycle time (tCYC2). This is validated across the full industrial temperature range (–40°C to +85°C) with V_CC = 5.0 V ±10%, per AC Electrical Characteristics Table 11 in DSC-4842/7.

Does the IDT709289L12PFI support independent address counters on both ports?

Yes, the IDT709289L12PFI provides fully independent address counters on left and right ports, controlled by dedicated CNTENL/CNTRSTL and CNTENR/CNTRSTR pins. Each counter advances on the rising edge of its respective clock when CNTEN = VIL, and resets synchronously to 0x0000 when CNTRST = VIL, as defined in Truth Table II.

How does the FT/PIPE pin affect timing behavior of the IDT709289L12PFI?

The FT/PIPEL (left) and FT/PIPER (right) pins configure output mode per port: VIH enables pipelined operation (tCD2 ≤ 12 ns, 1-cycle latency), while VIL enables flow-through mode (tCD1 ≤ 25 ns, 0-cycle latency). The mode selection is independent per port and affects tCYC, tCH, tCL, and tCD values as specified in Table 11.

What is the standby current consumption of the IDT709289L12PFI under full power-down conditions?

Under full standby (ISB3 condition), where both ports have CMOS-level inputs (CE0 and CE1 > V_CC – 0.2 V and all other inputs at rail), the IDT709289L12PFI draws ≤3.0 mA typical and ≤6.0 mA maximum, as specified in DC Electrical Characteristics Table 9 for the industrial-grade version.

Can the IDT709289L12PFI be used in depth-expanded memory configurations without external logic?

Yes, the IDT709289L12PFI supports depth expansion using its dual chip enables (CE0/CE1 per port) as shown in Figure 4 of the datasheet. Two or more devices can be cascaded by tying CE1 of one device to CE0 of the next, enabling seamless 128K×16 or larger memory banks without additional decode logic.

709289L12PFI 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 - Dual Port, Synchronous

Memory Size:: 1Mbit

Memory Organization:: 64K x 16

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: -

Access Time:: 12 ns

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 100-TQFP (14x14)

709289L12PFI FAQ

1.How can I place an order for 709289L12PFI through Aetrix?

Please submit a Request for Quotation (RFQ) for 709289L12PFI 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 709289L12PFI reliable?

The price and inventory of 709289L12PFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 709289L12PFI is usually 5 days.

3.What payment methods are accepted for 709289L12PFI?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 709289L12PFI transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 709289L12PFI?

709289L12PFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 709289L12PFI 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 709289L12PFI?

For technical support, including 709289L12PFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 709289L12PFI requirements.

6.How does Aetrix verify that 709289L12PFI is sourced from the original manufacturer or authorized distributors?

All 709289L12PFI 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 709289L12PFI meets industry standards.

7.What is the process for return or replacement of 709289L12PFI?

All 709289L12PFI units undergo pre-shipment inspection (PSI). If there is an issue with 709289L12PFI, 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 709289L12PFI part is unused and in its original packaging.

Return procedure for 709289L12PFI:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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