Renesas 70V9289L7PRFG

Overview

70V9289L7PRFG from Integrated Device Technology is a high-speed 3.3V 64K × 18-bit synchronous dual-port pipelined SRAM with true dual-ported memory cells enabling simultaneous access to the same address from left and right ports, 12ns cycle time in pipelined mode, 7.5ns clock-to-data access (max), and industrial-grade operation from –40°C to +85°C - used in real-time packet buffering for telecom line cards.

For engineers reviewing the 70V9289L7PRFG datasheet, 70V9289L7PRFG pinout, 70V9289L7PRFG application, or 70V9289L7PRFG equivalent, this page delivers verified timing parameters, validated TQFP-128 pin mapping, confirmed flow-through/pipelined output mode control, and direct alternatives for depth-expanded memory subsystems.

Technical Context

The 70V9289L7PRFG implements fully synchronous dual-port architecture with independent clocked registers on all address, data, and control inputs (4ns setup, 0ns hold), self-timed write logic decoupled from clock edge timing, and dual chip enables (CE0/CE1) supporting seamless depth expansion without external logic. Its pipelined output mode achieves 83MHz operation at 12ns cycle time.

It integrates separate upper-byte (UB/UBR) and lower-byte (LB/LBR) controls for multiplexed bus compatibility, address strobe (ADS) and counter enable/reset (CNTEN/CNTRST) for burst-addressing applications, and asynchronous output enable (OE) for flexible bus interfacing - all operating from a single 3.3V ±0.3V supply.

Key Specifications

Pinout & Package

70V9289L7PRFG is housed in a 128-pin Thin Quad Flatpack (TQFP) package measuring 14mm × 20mm × 1.4mm, with 32 VDD and 32 VSS pins distributed across the perimeter for robust power integrity and noise suppression in high-speed memory buses.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-10BGXI and IDT70V9389L7PF, the 70V9289L7PRFG uniquely combines pipelined 12ns operation, integrated address counter, and full 18-bit I/O - making it optimal for high-throughput, burst-oriented, and counter-driven memory subsystems.

Availability

70V9289L7PRFG is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and medical imaging systems requiring stable component supply, long-lifecycle support, and guaranteed obsolescence management.

Supply support for 70V9289L7PRFG 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 power management ICs for communications and computing markets.

The 70V9289L7PRFG belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered specifically for deterministic, low-latency, concurrent-access memory applications in telecom, test equipment, and real-time control systems.

FAQ

What is the maximum operating frequency of the 70V9289L7PRFG in pipelined mode?

The 70V9289L7PRFG achieves 83MHz operation in pipelined output mode, derived from its 12ns 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 timing margins confirmed by tCH2/tCL2 min/max specifications in the datasheet.

Does the 70V9289L7PRFG support independent byte enables for 16-bit bus interfacing?

Yes, the 70V9289L7PRFG provides separate upper-byte (UB/UBR) and lower-byte (LB/LBR) controls per port, allowing precise 9-bit upper or 9-bit lower writes. This enables clean 16-bit bus matching - for example, writing only I/O0–I/O7 (lower byte) while preserving I/O8–I/O15 (upper byte) contents.

How does the address counter function in the 70V9289L7PRFG, and what signals control it?

The 70V9289L7PRFG includes an internal address counter controlled by ADSR/ADSL (address strobe) and CNTENR/CNTENL (counter enable). When ADS = VIL, external address loads; when CNTEN = VIL on CLK↑, counter increments. CNTRST resets to address 0. This enables automatic burst addressing without host CPU intervention.

Can the 70V9289L7PRFG be used in depth-expanded configurations without external logic?

Yes, the 70V9289L7PRFG features dual chip enables (CE0/CE1) per port, allowing direct depth expansion - for example, two devices can implement 128K × 18-bit memory using only A16 as a bank select, with no additional decoding gates required. Truth Table I confirms CE0/CE1 logic states for deselection.

What is the power consumption profile of the 70V9289L7PRFG during active and standby operation?

The 70V9289L7PRFG consumes 500mW typical during active operation (both ports enabled, outputs disabled, f = fMAX) and drops to 1.5mW typical in full standby (CE0 and CE1 inactive, CMOS-level inputs). This low standby power is achieved via on-chip circuitry shutdown - confirmed in DC characteristics Table 9a.