Renesas 709289L6PF8

Overview

IDT709289L6PF8 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 cycle time in pipelined mode, industrial temperature range (–40°C to +85°C), and TTL-compatible 5 V ±10% supply. It serves in real-time inter-processor communication and FPGA-to-ASIC bridging where deterministic latency and concurrent read/write are critical.

For engineers reviewing the IDT709289L6PF8 datasheet, IDT709289L6PF8 pinout, IDT709289L6PF8 application, or IDT709289L6PF8 equivalent, key selection factors include pipelined vs. flow-through output timing, dual-chip-enable depth expansion capability, counter-enabled burst addressing, separate upper/lower byte controls, and industrial-grade reliability at 83 MHz operation.

Technical Context

The IDT709289L6PF8 implements fully synchronous dual-port architecture with clocked address, data, and control registers on both left and right ports-requiring only 4 ns setup and 0 ns hold for all inputs. Its self-timed write enables minimal cycle time, while independent ADS strobes per port allow external address loading without counter interference.

Each port supports configurable output mode (flow-through or pipelined) via dedicated FT/PIPE pins, delivering either 18 ns or 7.5 ns clock-to-data valid delay respectively. The integrated address counter-enabled by CNTEN and reset by CNTRST-operates independently per port and advances on rising CLK when ADS = VIH, supporting burst transfers without external address generation logic.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant green variant available.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous dual-port SRAM applications.

Compared with CY7C028V-15AXC and IDT70V9289L6PF8, the IDT709289L6PF8 uniquely delivers 12 ns pipelined performance at 5 V with industrial temperature support - making it the sole choice for legacy 5 V control systems requiring deterministic sub-100 ns inter-port latency.

Availability

IDT709289L6PF8 is available at Aetrix Electronics and suitable for real-time inter-processor communication, FPGA-to-ASIC bridging, and industrial motor control applications requiring stable component supply, long-term lifecycle assurance, and verified industrial temperature qualification.

Supply support for IDT709289L6PF8 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 high-performance computing solutions.

The IDT709289 product line was designed specifically for deterministic, low-latency dual-access memory in industrial automation, telecommunications infrastructure, and embedded control systems requiring concurrent read/write without arbitration overhead.

FAQ

What is the maximum operating frequency of the IDT709289L6PF8 in pipelined mode?

The IDT709289L6PF8 supports up to 83 MHz operation in pipelined output mode, derived from its guaranteed 12 ns clock cycle time (tCYC2). This timing is validated across the full industrial temperature range (–40°C to +85°C) and 5.0 V ±10% supply, ensuring reliable high-speed performance in demanding embedded environments without derating.

Does the IDT709289L6PF8 support independent address counters on each port?

Yes, the IDT709289L6PF8 provides fully independent address counters per port, controlled by dedicated CNTENL/CNTRSTL/ADSL (left) and CNTENR/CNTRSTR/ADSR (right) signals. Each counter advances synchronously on the rising edge of its respective clock when ADS = VIH, enabling autonomous burst transfers without cross-port interference.

How does the dual chip enable (CE0/CE1) scheme simplify depth expansion with the IDT709289L6PF8?

The IDT709289L6PF8 uses CE0 and CE1 to implement hierarchical port disable: asserting CE0 = VIH or CE1 = VIL powers down that port's internal circuitry, reducing standby current to 2.5 mW. For depth expansion, multiple IDT709289L6PF8 devices can be stacked using CE0/CE1 combinations without external logic - e.g., CE0L = VIL/CE1L = VIH selects left port of Device 1, while CE0L = VIH/CE1L = VIL deselects it cleanly.

Can the IDT709289L6PF8 operate in both pipelined and flow-through output modes simultaneously on different ports?

Yes, the IDT709289L6PF8 allows independent configuration: FT/PIPEL sets left port mode (VIH = pipelined, VIL = flow-through), and FT/PIPER sets right port mode identically. This enables mixed-mode operation - for example, left port pipelined for high-throughput streaming while right port flow-through for low-latency control register access - with no timing interaction between ports.

What is the purpose of the ADS (Address Strobe) input on the IDT709289L6PF8?

The ADS input on the IDT709289L6PF8 asynchronously latches the current address bus value into the internal address counter register on its falling edge. When ADS = VIL, the counter loads the external address regardless of CNTEN state - enabling precise address targeting during burst sequences or overriding auto-increment behavior for random access patterns.