Renesas 70T3339S200BCG

Overview

70T3339S200BCG from Integrated Device Technology is a high-speed synchronous dual-port static RAM with 512K × 18-bit organization, 2.5V core supply, and selectable 2.5V/3.3V I/O interface per port. It supports 200MHz operation (5ns cycle time), pipelined or flow-through output modes, and simultaneous read/write access on independent left/right ports - used in high-bandwidth packet buffering, FPGA co-processor memory, and telecom line-card data exchange.

For engineers reviewing the 70T3339S200BCG datasheet, 70T3339S200BCG pinout, 70T3339S200BCG application, or 70T3339S200BCG equivalent, key selection criteria include dual-port timing latency (3.4ns clock-to-data in pipelined mode), JTAG-compliant IEEE 1149.1 test support, industrial-grade (-40°C to +85°C) availability at 133MHz, and BGA package compatibility with depth expansion via dual chip enables.

Technical Context

The 70T3339S200BCG implements true dual-port SRAM cells enabling concurrent access to identical memory locations without arbitration logic. Its fully synchronous architecture uses registered address, data, and control inputs on both ports, achieving 1.5ns setup and 0.5ns hold times at 200MHz.

Each port features independent OPT pins to configure I/O voltage (2.5V or 3.3V), separate byte enables (UBL/LBL, UBR/LBR), and configurable pipeline/flow-through output mode via PL/FTL and PL/FTR inputs. Collision detection and interrupt flags provide real-time inter-port synchronization for deterministic data handoff.

Key Specifications

Pinout & Package

70T3339S200BCG is housed in a 256-pin Ball Grid Array (BGA) package measuring 17mm × 17mm × 1.4mm with 1.0mm ball pitch. All VDD pins require 2.5V ±100mV; VDDQ pins must match selected I/O voltage (2.5V or 3.3V) per port based on OPT pin state.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-200AXC and AS7C331024B-200BIN, the 70T3339S200BCG uniquely delivers per-port selectable I/O voltage, IEEE 1149.1 JTAG, and pipelined/flow-through mode switching - critical for next-generation programmable logic and adaptive networking systems requiring flexible, testable, low-latency memory.

Availability

70T3339S200BCG is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and high-performance computing applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for 70T3339S200BCG 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 70T3339S200BCG belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered specifically for deterministic, low-latency data exchange between parallel processing elements in networking and real-time control systems.

FAQ

What is the maximum operating frequency of the 70T3339S200BCG and under what conditions?

The 70T3339S200BCG operates at up to 200MHz in commercial temperature range (0°C to +70°C) with 5ns clock cycle time. This rating applies only to the BCG256 package variant; the BF208 fpBGA package is limited to 133MHz. Operation requires stable 2.5V ±100mV core supply and proper termination of all VDDQ pins per port's selected I/O voltage (2.5V or 3.3V).

How does the 70T3339S200BCG handle simultaneous access to the same memory address from both ports?

The 70T3339S200BCG uses true dual-port SRAM cells that permit simultaneous read/write operations to identical addresses. When both ports write concurrently, the COLL/INTR flags assert to signal collision; the final stored value depends on relative timing and is not deterministic. For guaranteed coherency, designers must implement external arbitration or use the collision detection logic to sequence accesses.

Can the left and right ports of the 70T3339S200BCG operate at different I/O voltages?

Yes - the 70T3339S200BCG 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. This enables seamless interfacing with mixed-voltage SoCs or FPGAs without external level shifters.

What is the purpose of the PL/FTL and PL/FTR pins on the 70T3339S200BCG?

The PL/FTL and PL/FTR pins configure the output register behavior on each port: asserting PL/FTX = VIH enables pipelined mode (1-cycle output delay, optimized for burst throughput), while PL/FTX = VIL enables flow-through mode (combinatorial output, minimal latency). This allows designers to tune timing trade-offs per port - e.g., pipelined for high-speed streaming, flow-through for low-latency control loops.

Does the 70T3339S200BCG support power-saving modes, and how are they activated?

Yes - the 70T3339S200BCG includes a hardware sleep mode activated by asserting ZZL and ZZR high. In sleep mode, dynamic circuitry powers down, reducing current to ≤15mA while preserving data and maintaining JTAG accessibility. Static inputs (PL/FTx, OPTx, and ZZx themselves) remain functional, allowing wake-up via clock or control signal transitions without full reset.