Renesas 70V9279S9PRFI8

Overview

70V9279S9PRFI8 from IDT (now Renesas) is a high-speed 32K × 16-bit synchronous dual-port static RAM with true dual-ported memory cells enabling simultaneous read/write access to the same address from left and right ports, 10 ns pipelined cycle time at 100 MHz, LVTTL-compatible 3.3 V ±0.3 V operation, and industrial temperature range (–40°C to +85°C). It is used in real-time interprocessor communication, network packet buffering, and FPGA co-processor data exchange.

For engineers reviewing the 70V9279S9PRFI8 datasheet, 70V9279S9PRFI8 pinout, 70V9279S9PRFI8 application, or 70V9279S9PRFI8 equivalent, this page delivers verified timing parameters, package mapping to 128-pin TQFP, flow-through/pipelined output mode selection, counter-enable functionality, and dual-chip-enable depth expansion support - all confirmed for the exact 70V9279S9PRFI8 variant.

Technical Context

This device implements fully synchronous dual-port architecture with independent clock inputs (CLKL/CLKR), separate address/data/control registers per port, and 4 ns setup / 1 ns hold timing on all synchronous inputs. Its internal address counter supports auto-incrementing reads/writes when ADS is deasserted and CNTEN is active.

The FT/PIPE pin configures each port independently for flow-through (tCD1 ≤ 20 ns) or pipelined (tCD2 ≤ 9 ns) output modes; CE0/CE1 enable per-port power-down, and UB/LB controls allow byte-level write masking for bus-matching compatibility with multiplexed 16-bit systems.

Key Specifications

Pinout & Package

70V9279S9PRFI8 is housed in a 128-pin TQFP (Thin Quad Flatpack) package with exposed thermal pad (not electrically connected), 0.4 mm lead pitch, and 14 mm × 20 mm footprint. All VDD pins require local 3.3 V decoupling; all VSS pins must be solidly grounded.

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 70V9279S9PRFI8 uniquely delivers synchronous 100 MHz pipelined operation, per-port output mode selection, and hardware address counting - making it optimal for FPGA-based real-time control and high-speed packet processing where deterministic latency and burst efficiency are mandatory.

Availability

70V9279S9PRFI8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, and FPGA co-processing applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for 70V9279S9PRFI8 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 fabless semiconductor company specializing in high-performance memory, timing, and interface solutions for communications, computing, and industrial markets.

The 70V9279S9PRFI8 belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for deterministic, low-latency interprocessor communication and real-time data buffering in FPGA, DSP, and multi-core embedded systems.

FAQ

What is the maximum operating frequency of the 70V9279S9PRFI8 in pipelined mode?

The 70V9279S9PRFI8 supports up to 100 MHz operation in pipelined output mode, corresponding to a 10 ns clock cycle time (tCYC2). This specification is guaranteed over the full industrial temperature range (–40°C to +85°C) and 3.3 V ±0.3 V supply, as confirmed in Table 11a of the official datasheet revision DSC 3743/13.

Does the 70V9279S9PRFI8 support simultaneous read and write to the same memory location?

Yes, the 70V9279S9PRFI8 uses true dual-ported memory cells that permit simultaneous read and write operations to the exact same address from the left and right ports - a core architectural feature explicitly stated in the Functional Block Diagram and Features section of the datasheet.

How does the FT/PIPE pin affect timing behavior of the 70V9279S9PRFI8?

The FT/PIPE pin configures each port independently: VIH selects pipelined output mode (tCD2 ≤ 9 ns, tCYC2 = 10 ns), while VIL selects flow-through mode (tCD1 ≤ 20 ns, tCYC1 = 25 ns). The datasheet confirms this per-port configurability in Truth Table I and AC Characteristics Tables 11a/11b.

What is the function of the ADS pin on the 70V9279S9PRFI8?

The ADS (Address Strobe) pin determines whether the internal address register loads the external address (ADS = VIL) or retains the current value and enables the address counter (ADS = VIH). This dual-mode addressing is documented in Truth Table II and Timing Waveforms 15–18 of the datasheet.

Is the 70V9279S9PRFI8 pin-compatible with other members of the IDT70V92xx family?

No - the 70V9279S9PRFI8 is not pin-compatible with IDT70V9269 or IDT70V9289 due to differences in address bus width (A14 is NC on 16K variants) and functional pin assignments. Pin compatibility is not claimed in the datasheet, and the 128-pin TQFP footprint is shared but signal mapping differs across variants.