Renesas 70V3389S5PRF

Overview

70V3389S5PRF from Integrated Device Technology is a high-speed 64K × 18-bit synchronous dual-port static RAM with pipelined output, true dual-port memory cells enabling simultaneous access to the same address on both ports, 7.5 ns clock cycle time (133 MHz), and selectable 3.3 V or 2.5 V I/O interface per port - used in real-time DSP co-processing, network packet buffering, and FPGA-based protocol bridging.

For engineers reviewing the 70V3389S5PRF datasheet, 70V3389S5PRF pinout, 70V3389S5PRF application, or 70V3389S5PRF equivalent, key selection criteria include pipelined read latency, independent port voltage configuration via OPTL/OPTR, counter-enable address generation, dual chip enable for depth expansion, and industrial temperature support (-40°C to +85°C).

Technical Context

The 70V3389S5PRF implements fully synchronous operation on both left and right ports, with all control, address, and data inputs registered on the rising edge of CLKL/CLKR. Its self-timed write pulse operates independently of clock low-to-high transition, enabling minimal write cycle overhead.

It supports pipelined output mode (tCD2 ≤ 5 ns max), address counter logic with ADS/CNTEN/CNTRST control, and independent I/O voltage selection per port via OPTL and OPTR pins - allowing one port at 3.3 V and the other at 2.5 V without level-shifting circuitry.

Key Specifications

Pinout & Package

70V3389S5PRF is packaged in a 128-pin Thin Quad Plastic Flatpack (TQFP) with 0.5 mm pitch, body size 14 mm × 20 mm × 1.4 mm. All VDD pins require 3.3 V supply; VDDQL/VDDQR must match OPTL/OPTR logic level (3.3 V if VIH, 2.5 V if VIL); all VSS pins connect to ground.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-5BC and AS7C362000B-5PZIN, the 70V3389S5PRF uniquely delivers per-port I/O voltage selection and integrated address counter - enabling simpler mixed-domain interfacing and reduced firmware overhead in burst-access applications.

Availability

70V3389S5PRF is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, FPGA prototyping, and embedded DSP systems requiring stable component supply, long-term lifecycle assurance, and industrial-grade reliability.

Supply support for 70V3389S5PRF 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 sensor solutions for communications, computing, and industrial markets.

The 70V3389S5PRF belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered for deterministic low-latency memory sharing between heterogeneous processors, FPGAs, and ASICs in real-time embedded systems.

FAQ

What is the maximum operating frequency of the 70V3389S5PRF?

The 70V3389S5PRF supports a 133 MHz clock rate, corresponding to a 7.5 ns clock cycle time (tCYC2). This is guaranteed across the full industrial temperature range (-40°C to +85°C) and applies to both left and right ports independently when operated within specified voltage and loading conditions.

Does the 70V3389S5PRF support mixed I/O voltages on its two ports?

Yes, the 70V3389S5PRF supports independent I/O voltage selection: OPTL configures the left port's VDDQL (3.3 V or 2.5 V), and OPTR configures the right port's VDDQR. This allows one port to interface with a 3.3 V FPGA while the other connects directly to a 2.5 V ASIC - no external level shifters required.

How does the address counter function in the 70V3389S5PRF?

The 70V3389S5PRF implements per-port address counters controlled by CNTENL/CNTENR and CNTRSTL/CNTRSTR. When CNTENX = LOW on the rising CLKX edge, the internal address increments automatically - useful for burst-mode sequential access without reloading the address bus. ADSX = HIGH disables external address latching and enables counter mode.

What package options are available for the 70V3389S5PRF?

The 70V3389S5PRF is offered in three packages: 128-pin TQFP (PKG128), 208-pin fine-pitch BGA (BF208), and 256-pin BGA (BC256/BCG256). The "PRF" suffix in the part number specifically denotes the 128-pin TQFP variant with industrial temperature rating and standard power profile.

Is the 70V3389S5PRF pin-compatible with other speed grades in the same family?

No - the 70V3389S5PRF is not pin-compatible with faster (e.g., S4) or slower (e.g., S6) speed grades due to differing AC timing requirements and internal drive strength calibration. While pinout and package are identical, PCB layout must be validated per speed grade per the respective datasheet AC tables.