Renesas 70V9389L12PRF

Overview

70V9389L12PRF from Integrated Device Technology is a high-speed 3.3V synchronous dual-port static RAM with true dual-ported memory cells enabling simultaneous access to the same address from both ports, 64K × 18-bit (or 64K × 16-bit) organization, 12 ns pipelined clock cycle time, and industrial temperature range (–40°C to +85°C). It supports flow-through or pipelined output modes via FT/PIPE pins and is used in real-time digital signal processing systems requiring concurrent read/write access across independent data paths.

For engineers reviewing the 70V9389L12PRF datasheet, 70V9389L12PRF pinout, 70V9389L12PRF application, or 70V9389L12PRF equivalent, key selection criteria include pipelined vs. flow-through timing behavior, dual chip enable depth expansion capability, LVTTL-compatible 3.3V operation, counter-enable address sequencing, and TQFP-128 packaging for high-density PCB layouts.

Technical Context

The 70V9389L12PRF implements fully synchronous dual-port architecture with separate clock inputs (CLKL/CLKR), address strobe enables (ADSL/ADSR), and independent byte controls (UBL/UBR, LBL/LBR) per port. All control, address, and data inputs are registered on the rising edge of their respective clocks, delivering 4 ns setup and 0 ns hold times.

It features self-timed write logic decoupled from clock edge timing, enabling fast cycle times without external timing constraints. The device supports pipelined output mode with 7.5 ns clock-to-data-out and flow-through mode with 18 ns clock-to-data-out, selectable per port via FT/PIPEL and FT/PIPER pins.

Key Specifications

Pinout & Package

70V9389L12PRF is housed in a 128-pin Thin Quad Flatpack (TQFP) package measuring approximately 14 mm × 20 mm × 1.4 mm, with exposed pad not specified and standard LVTTL-compatible I/O voltage levels.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV18-125BZI and IDT70V9289L12PF, the 70V9389L12PRF uniquely combines 12 ns pipelined timing, integrated address counter, and 18-bit flexibility in a 128-pin TQFP - making it optimal for systems requiring burst-mode efficiency and hardware-accelerated address sequencing.

Availability

70V9389L12PRF is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, medical imaging, and real-time DSP applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.

Supply support for 70V9389L12PRF 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 70V9389L12PRF belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for real-time embedded systems requiring deterministic latency, concurrent access, and hardware-assisted address management in industrial and telecom environments.

FAQ

What is the maximum operating frequency of the 70V9389L12PRF in pipelined mode?

The 70V9389L12PRF supports up to 83 MHz operation in pipelined output mode, derived from its 12 ns maximum clock cycle time (tCYC2). This timing is guaranteed over the full industrial temperature range (–40°C to +85°C) and 3.3 V ± 0.3 V supply, making the 70V9389L12PRF suitable for high-throughput real-time buffering where deterministic latency is critical.

Does the 70V9389L12PRF support independent output timing modes on each port?

Yes, the 70V9389L12PRF supports independent output timing configuration: FT/PIPEL sets the left port mode and FT/PIPER sets the right port mode. Each can be configured for pipelined (VIH) or flow-through (VIL) operation, allowing one port to prioritize low latency (flow-through) while the other optimizes throughput (pipelined), all within the same 70V9389L12PRF device.

How does the address counter function in the 70V9389L12PRF?

The 70V9389L12PRF integrates independent address counters per port, controlled by CNTENL/CNTENR and CNTRSTL/CNTRSTR. When CNTEN = VIL on the rising clock edge, the counter advances automatically - eliminating CPU overhead for sequential memory access. This feature is confirmed in Truth Table II and timing diagrams (e.g., Figure 14), and applies identically to both ports of the 70V9389L12PRF.

What power-saving features does the 70V9389L12PRF provide?

The 70V9389L12PRF offers four standby modes: ISB1 (both ports disabled, 30 mA max), ISB2 (one port active, 95 mA max), ISB3 (full CMOS standby, 0.4 mA typ.), and ISB4 (one port CMOS standby, 90 mA max). These are enabled via CE0/CE1 combinations and support rapid wake-up - critical for energy-constrained industrial systems using the 70V9389L12PRF as shared memory.

Is the 70V9389L12PRF pin-compatible with other members of the IDT70V9x89 family?

No - the 70V9389L12PRF uses a 128-pin TQFP package (PK128), while variants like IDT70V9289L12PF use 100-pin TQFP (PN100) with different pin assignments. Although functional and timing characteristics align across the family, mechanical and electrical pin mapping differs; therefore, the 70V9389L12PRF is not pin-compatible with other family members and requires dedicated PCB layout.