Renesas 70T3599S133BFGI

Overview

70T3599S133BFGI from Integrated Device Technology is a high-speed 256K × 36-bit synchronous dual-port SRAM with true dual-port architecture enabling simultaneous read/write access to the same memory location. It operates at 133MHz (4.2ns access time), supports independent 2.5V core and selectable 2.5V/3.3V I/O supplies per port, and features pipelined or flow-through output modes for burst data transfer in telecom switching fabric.

For engineers reviewing the 70T3599S133BFGI datasheet, 70T3599S133BFGI pinout, 70T3599S133BFGI application, or 70T3599S133BFGI equivalent, key selection criteria include dual-port timing coordination, per-port voltage configuration via OPT pins, JTAG-compliant IEEE 1149.1 test support, and industrial-grade (-40°C to +85°C) operation at 133MHz in fpBGA packaging.

Technical Context

This device implements fully synchronous dual-port operation with independent clock domains (CLKL/CLKR), register-controlled address/data/control inputs, and self-timed write logic enabling minimal setup/hold times. Each port includes dedicated chip enables (CE0/CE1), byte enables (BE0–BE3), and pipeline/flow-through mode selection (PL/FT).

It integrates on-chip collision detection and interrupt flags (COLL/INTR, COLR/INTL), address counter logic with repeat and enable controls (CNTEN/REPEAT), and sleep mode (ZZL/ZZR) that disables dynamic inputs while preserving JTAG accessibility. JTAG boundary scan is supported per IEEE 1149.1 in BGA packages.

Key Specifications

Pinout & Package

70T3599S133BFGI is packaged in a 208-pin fine-pitch BGA (BFG208), with 15mm × 15mm footprint and 0.8mm ball pitch. Power and ground balls are distributed across the array for low-noise operation; VDD (2.5V core) and VDDQ (2.5V/3.3V I/O) supplies are segregated per port.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-133BZI and AS7C3256A-133JIN, the 70T3599S133BFGI uniquely supports per-port I/O voltage selection, pipelined output mode, and hardware collision/interrupt signaling-enabling tighter timing control and mixed-voltage integration without external components.

Availability

70T3599S133BFGI is available at Aetrix Electronics and suitable for telecom switching fabric, network packet buffering, and industrial motion control applications requiring stable component supply across extended product lifecycles.

Supply support for 70T3599S133BFGI 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, designs high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.

The 70T35xx family targets high-bandwidth, low-latency dual-port memory applications in telecom infrastructure and real-time embedded systems-emphasizing deterministic timing, mixed-voltage interoperability, and hardware-assisted arbitration.

FAQ

What is the maximum guaranteed operating frequency of the 70T3599S133BFGI at industrial temperature?

The 70T3599S133BFGI is fully characterized and guaranteed to operate at 133MHz across the industrial temperature range (-40°C to +85°C). This specification is validated for both pipelined and flow-through output modes and applies specifically to the BFG208 fpBGA package variant.

Does the 70T3599S133BFGI support independent voltage configuration on left and right ports?

Yes, the 70T3599S133BFGI supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL to VDD (2.5V) configures the left port for 3.3V I/O levels with VDDQL = 3.3V; setting OPTR to VSS (0V) configures the right port for 2.5V I/O with VDDQR = 2.5V-enabling direct interfacing with mixed-voltage ASICs without level shifters.

How does the collision detection feature work in the 70T3599S133BFGI?

The 70T3599S133BFGI asserts COLL (left port) or COLR (right port) within 4.2ns when both ports attempt simultaneous access to the same memory location. These open-drain flags can trigger external arbitration logic or interrupt controllers, enabling hardware-level resolution without software polling overhead.

Is JTAG boundary scan supported on the 70T3599S133BFGI in its BFG208 package?

Yes, the 70T3599S133BFGI in the BFG208 fpBGA package fully supports IEEE 1149.1 JTAG boundary scan via dedicated TCK, TMS, TDI, TDO, and TRST pins. JTAG remains functional even when ZZL/ZZR sleep mode is asserted, allowing in-system test and debug during low-power states.

What is the purpose of the REPEAT function in the 70T3599S133BFGI address counter?

The REPEAT function in the 70T3599S133BFGI resets the internal address counter to the last valid address loaded via ADSL or ADSR. This enables efficient burst-mode access to a fixed memory region-such as descriptor tables or coefficient buffers-without continuous address bus updates, reducing control overhead in FPGA- or DSP-based systems.