Renesas 70T3599S200BCG

Overview

70T3599S200BCG from Integrated Device Technology is a high-speed 256K × 36-bit synchronous dual-port SRAM with true concurrent access on independent left and right ports, 2.5V core supply, selectable 2.5V/3.3V I/O interface per port, and 200MHz operation (5ns cycle time) in commercial temperature range. It supports pipelined or flow-through output modes and is used in high-bandwidth packet buffering for telecom line cards.

For engineers reviewing the 70T3599S200BCG datasheet, 70T3599S200BCG pinout, 70T3599S200BCG application, or 70T3599S200BCG equivalent, key selection criteria include simultaneous dual-port access latency, per-port voltage configurability (via OPTL/OPTR), JTAG-compliant boundary scan support, and 256-pin BGA package compatibility with industrial-grade thermal performance up to +85°C.

Technical Context

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

Collision detection and interrupt flags (COLL/COLR/INTL/INTR) are hardware-asserted on simultaneous access to the same memory location. The integrated address counter with repeat and enable controls (CNTENL/CNTENR, REPEATL/REPEATR) supports burst-mode sequential addressing without external logic.

Key Specifications

Pinout & Package

70T3599S200BCG is housed in a 256-pin BGA (package code BCG256) with 17mm × 17mm footprint and 1.0mm ball pitch. Power and ground balls are distributed across the array for low-noise operation; all VDD pins require 2.5V, while VDDQ pins are routed per-port I/O voltage configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-200BZXI and IDT70V9269L15PF, the 70T3599S200BCG provides higher integration (per-port voltage control, JTAG, hardware counter), superior bandwidth (14Gbps vs ≤8Gbps), and deterministic low-latency operation-making it optimal for next-generation telecom and real-time embedded systems.

Availability

70T3599S200BCG is available at Aetrix Electronics and suitable for telecom infrastructure, network processor design, and real-time signal processing applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for 70T3599S200BCG 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 and computing markets.

The 70T35xx family was designed specifically for high-throughput, low-latency dual-port memory applications in networking equipment, baseband processing, and real-time control systems-emphasizing configurability, reliability, and seamless FPGA/ASIC integration.

FAQ

What is the maximum operating frequency of the 70T3599S200BCG?

The 70T3599S200BCG is rated for 200MHz operation (5ns clock cycle time) in commercial temperature range (0°C to +70°C). This frequency is guaranteed with pipelined output mode and proper termination; flow-through mode supports same clock rate but with different timing margins. The 70T3599S200BCG does not support 200MHz in industrial temperature range or fpBGA/PQFP packages.

Does the 70T3599S200BCG support independent voltage configuration on each port?

Yes, the 70T3599S200BCG 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 operation with VDDQL = 3.3V; setting it to VSS (0V) configures 2.5V I/O with VDDQL = 2.5V. The right port operates identically using OPTR and VDDQR. This enables direct interfacing with mixed-voltage SoCs or FPGAs without external level shifters.

How does collision detection work on the 70T3599S200BCG?

The 70T3599S200BCG asserts COLL (left port) or COLR (right port) within 4.2ns when both ports attempt simultaneous access (read or write) to the same memory address. These open-drain outputs require external pull-up resistors and can trigger interrupt service routines or arbitration logic. Collision detection is hardware-implemented and independent of software polling-ensuring deterministic response for real-time systems.

What is the purpose of the PL/FTL and PL/FTR pins on the 70T3599S200BCG?

The PL/FTL (left) and PL/FTR (right) pins configure the output timing behavior per port: VIH selects pipelined mode (1-cycle latency, tCD2 = 3.4ns), while VIL selects flow-through mode (0-cycle latency, tCD1 = 10ns). Pipelined mode improves system throughput in burst-oriented applications; flow-through mode minimizes latency for single-access operations. Both modes are independently configurable, allowing asymmetric optimization across ports.

Is JTAG boundary scan supported on the 70T3599S200BCG?

Yes, the 70T3599S200BCG includes full IEEE 1149.1-compliant JTAG boundary scan with TCK, TMS, TDI, TDO, and TRST pins. This enables in-system testing, interconnect verification, and programming of associated devices without functional interruption. JTAG remains operational even during sleep mode (ZZ assertion), though boundary scan is not recommended during active sleep due to dynamic input shutdown.