Renesas 709099L9PFI

Overview

709099L9PFI from Renesas Electronics is a high-speed 128K × 8-bit synchronous pipelined dual-port static RAM with true dual-ported memory cells enabling simultaneous access to the same address, 9 ns max clock-to-data access in pipelined mode, 15 ns cycle time at 66.7 MHz, and industrial temperature range (–40°C to +85°C). It serves as shared memory buffer in real-time DSP co-processing systems requiring deterministic latency between two independent bus masters.

For engineers reviewing the 709099L9PFI datasheet, 709099L9PFI pinout, 709099L9PFI application, or 709099L9PFI equivalent, this page delivers verified timing parameters, validated dual-port control logic, confirmed TQFP-100 package mapping, and real-world use cases for synchronous memory arbitration in telecom line cards and FPGA-based protocol accelerators.

Technical Context

The 709099L9PFI implements fully synchronous dual-port operation with registered address, data, and control inputs on both left and right ports-each clocked on the rising edge of CLKL/CLKR-with 4 ns setup and 0 ns hold times. Its self-timed write architecture decouples internal write pulse generation from clock edge timing, enabling minimal cycle time without external wait-state logic.

It supports two output modes per port via dedicated FT/PIPE pins: flow-through (data valid within one clock) and pipelined (data valid after one clock, enabling 66.7 MHz operation). Address counter logic allows autonomous address incrementing or external address loading via ADS signals, independent of chip enable states.

Key Specifications

Pinout & Package

709099L9PFI is housed in a 100-pin TQFP (PNG100) package with exposed thermal pad (not electrically connected), 0.5 mm pitch, and JEDEC-standard pin 1 orientation. All VCC and GND pins must be individually decoupled per layout guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-167BZI and IS61WV1288EBLL-10TLI, the 709099L9PFI uniquely delivers 5 V-compatible pipelined dual-port operation with integrated address counter and dual CE logic-enabling direct replacement in legacy industrial systems without PCB redesign or voltage rail changes.

Availability

709099L9PFI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, and automotive ADAS applications requiring stable component supply across extended product lifecycles.

Supply support for 70909099L9PFI 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

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT markets.

The 709099L9PFI belongs to Renesas' legacy high-speed synchronous dual-port SRAM product line, engineered specifically for deterministic, low-latency memory sharing between heterogeneous processors in mission-critical embedded systems.

FAQ

What is the maximum operating frequency of the 709099L9PFI in pipelined mode?

The 709099L9PFI achieves a 15 ns clock cycle time in pipelined output mode, corresponding to a maximum operating frequency of 66.7 MHz. This is guaranteed across the full industrial temperature range (–40°C to +85°C) and 5.0 V ±10% supply, as specified in AC Electrical Characteristics Table 11 under tCYC2 parameter for the 709099L9 speed grade.

Does the 709099L9PFI support independent output modes on left and right ports?

Yes, the 709099L9PFI supports independent output mode selection per port via FT/PIPEL (left) and FT/PIPER (right) pins. Setting either pin to VIH configures that port for pipelined operation (9 ns clock-to-data), while VIL selects flow-through mode (20 ns clock-to-data). This enables asymmetric timing configurations-for example, pipelined for high-throughput data writes and flow-through for low-latency status reads.

How does the address counter function in the 709099L9PFI?

The 709099L9PFI integrates a 17-bit address counter per port, controlled by CNTENL/CNTENR and CNTRSTL/CNTRSTR. When CNTEN = VIL on the rising CLK edge, the counter advances automatically-regardless of CE0/CE1 state-enabling burst sequential access without external address generation. ADS = VIL loads an external address, overriding the counter output.

What power-saving features does the 709099L9PFI offer?

The 709099L9PFI provides multi-level power management: full standby (ISB3 = 0.5–6.0 mA) when both ports are disabled with CMOS-level inputs; per-port standby (ISB2 = 195–295 mA) when one port is active; and dynamic current scaling (ICC = 300–430 mA) during active dual-port operation. CE0/CE1 assertion powers down internal circuitry of the selected port, reducing active power to 2.5 mW typical.

Is the 709099L9PFI pin-compatible with other IDT dual-port SRAMs?

The 709099L9PFI uses the standard IDT 100-pin TQFP (PNG100) footprint shared with earlier IDT70V9099 and IDT70V27L devices, but pin functions differ-particularly for counter control (CNTEN/CNTRST) and address strobe (ADS). Direct replacement requires verification of signal mapping against the specific variant's pin configuration table; it is not a drop-in substitute for non-L9 speed grades or non-pipelined derivatives.