Renesas 70V9269S15PRFI

Overview

70V9269S15PRFI from IDT (now Renesas) is a high-speed, 32K × 16-bit synchronous dual-port SRAM with true dual-ported memory cells enabling simultaneous read/write access to the same address from left and right ports. It operates at 3.3V ±0.3V, supports pipelined output mode with 15 ns clock-to-data access, and delivers 10 ns cycle time at 100 MHz - ideal for real-time inter-processor communication in telecom line cards and FPGA co-processing buffers.

For engineers reviewing the 70V9269S15PRFI datasheet, 70V9269S15PRFI pinout, 70V9269S15PRFI application, or 70V9269S15PRFI equivalent, this page provides verified timing parameters, industrial-grade thermal validation (–40°C to +85°C), TQFP-128 package mapping, and confirmed alternatives for depth-expansion or low-power migration scenarios.

Technical Context

This device implements full synchronous operation on both ports with 4 ns setup and 1 ns hold on all control, data, and address inputs. Its dual chip enables (CE0/CE1 per port) support seamless depth expansion without external logic, while separate upper-byte (UB) and lower-byte (LB) controls enable multiplexed bus compatibility and byte-level write masking.

The integrated address counter - enabled via CNTEN and reset via CNTRST - allows burst-mode sequential addressing independent of external address lines when ADS is deasserted. Flow-through or pipelined output mode is selected globally per port using the FT/PIPE pin, with pipelined mode delivering 6.5 ns clock-to-data-out and self-timed write for minimal cycle overhead.

Key Specifications

Pinout & Package

70V9269S15PRFI is housed in a 128-pin TQFP package with exposed thermal pad (not electrically connected). All VDD pins must be decoupled locally; all VSS pins require low-inductance ground connections. Pin functions are symmetric across left (L) and right (R) ports, with dedicated clock, address, I/O, and control terminals per side.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-15AXC and IS61WV102416BLL-10MLI, the 70V9269S15PRFI uniquely combines true dual-port concurrency, integrated address counter, and pipelined timing - making it irreplaceable in tightly coupled, low-latency inter-processor architectures where deterministic access and minimal glue logic are mandatory.

Availability

70V9269S15PRFI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and aerospace avionics requiring stable component supply, long-term lifecycle assurance, and traceable industrial-grade sourcing.

Supply support for 70V9269S15PRFI 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

IDT (Integrated Device Technology), now part of Renesas Electronics, is a leader in high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.

The 70V9269S15PRFI belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered specifically for deterministic, low-latency inter-processor communication in real-time embedded systems demanding concurrent memory access and industrial temperature resilience.

FAQ

What is the maximum operating frequency of the 70V9269S15PRFI in pipelined mode?

The 70V9269S15PRFI supports up to 100 MHz operation in pipelined output mode, corresponding to a 15 ns maximum clock cycle time (tCYC2). This is validated across the full industrial temperature range (–40°C to +85°C) and 3.3V ±0.3V supply, with all timing margins met under worst-case process/voltage/temperature conditions per the official IDT datasheet DSC3743.

Does the 70V9269S15PRFI support byte-level write enable, and how is it implemented?

Yes, the 70V9269S15PRFI supports independent upper- and lower-byte write enable via UBL/LBL (left port) and UBR/LBR (right port). When asserted low, each signal gates the corresponding 8-bit segment of the 16-bit I/O bus during write cycles - enabling partial-word updates without read-modify-write sequences. This is confirmed in Truth Table I and functional block diagram documentation.

Is the 70V9269S15PRFI pin-compatible with other members of the IDT70V92xx family, such as the 70V9279?

No - the 70V9269S15PRFI is not pin-compatible with the 70V9279. While both share the same 128-pin TQFP package and core signal naming, the 70V9269 has A14 designated as No Connect (per Note 1 in datasheet), whereas the 70V9279 uses A14 as an active address line for its 64K × 16 configuration. This difference affects address decoding and must be accounted for in PCB layout.

What power-saving modes does the 70V9269S15PRFI offer, and what are their typical current draws?

The 70V9269S15PRFI offers four standby modes: ISB1 (both ports TTL-disabled, 65 mA typ), ISB2 (one port active, 150 mA typ), ISB3 (full CMOS standby, 1.0 mA typ), and ISB4 (one port CMOS-standby, 90 mA typ). These values are measured at VDD = 3.3V and TA = 25°C per Table 9b in the datasheet, and scale predictably across temperature and voltage ranges.

Can the 70V9269S15PRFI be used in flow-through mode for applications requiring zero-cycle read latency?

Yes - the 70V9269S15PRFI supports flow-through output mode when FT/PIPE is held low (VIL). In this mode, data appears on the I/O bus within 20 ns (max) after clock rise (tCD1), with no pipeline register delay. This mode trades off timing margin for immediate data availability, and is explicitly validated in AC Electrical Characteristics Table 11a for the 70V9269X15 speed grade.