Renesas 70V3599S133BFGI

Overview

70V3599S133BFGI from IDT (now Renesas) is a high-speed 128K × 36-bit synchronous dual-port SRAM with true dual-port architecture enabling simultaneous read/write access to the same memory location from independent left and right ports. It operates at 133MHz (7.5ns cycle time), supports selectable pipelined or flow-through output modes, features dual chip enables for depth expansion, and delivers 12Gbps aggregate bandwidth. It is used in real-time packet buffering for telecom line cards and FPGA co-processor memory interfaces.

For engineers reviewing the 70V3599S133BFGI datasheet, 70V3599S133BFGI pinout, 70V3599S133BFGI application, or 70V3599S133BFGI equivalent, key selection criteria include its 133MHz industrial-grade timing (–40°C to +85°C), independent 2.5V/3.3V I/O voltage support per port via OPT pins, JTAG IEEE 1149.1 compliance, and 208-pin fpBGA package with validated pin mapping for PCB layout.

Technical Context

This device implements fully synchronous operation on both ports with registered address, data, and control inputs-enabling minimal setup (1.7ns) and hold (0.5ns) times at 133MHz. Its dual-port memory array allows concurrent access without arbitration logic, while the integrated address counter with REPEAT and CNTEN enables burst-mode sequential addressing.

The device supports two distinct output timing architectures: pipelined mode (tCD2 = 4.2ns, tCYC2 = 7.5ns) for maximum throughput, and flow-through mode (tCD1 = 15ns, tCYC1 = 25ns) for zero-latency reads. Independent VDDQ supply per port-controlled by OPTL/OPTR-is configurable for 2.5V or 3.3V I/O levels, decoupling core (3.3V VDD) and interface voltage domains.

Key Specifications

Pinout & Package

208-pin fpBGA (BFG208), 0.8mm ball pitch, 15mm × 15mm footprint. All VDD pins require 3.3V; VDDQL/VDDQR must match OPTL/OPTR logic level (2.5V if OPT = VIL, 3.3V if OPT = VIH); all VSS pins grounded.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-133BZI and AS7C33128PFSI-133, the 70V3599S133BFGI uniquely combines 128K × 36 capacity, per-port 2.5V/3.3V I/O flexibility, IEEE 1149.1 JTAG, and hardware address counter-making it optimal for space-constrained, mixed-voltage, test-critical embedded systems.

Availability

70V3599S133BFGI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, avionics data acquisition, and FPGA-accelerated computing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 70V3599S133BFGI 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

Renesas Electronics (formerly Integrated Device Technology, IDT) is a global semiconductor leader specializing in high-performance timing, memory, and analog solutions for communications, computing, and industrial markets.

The IDT70V3599 product line was designed specifically for deterministic, low-latency dual-port memory applications in real-time systems-emphasizing simultaneous access, flexible I/O voltage, and industrial-grade reliability.

FAQ

What is the maximum operating frequency of the 70V3599S133BFGI across its full temperature range?

The 70V3599S133BFGI is rated for 133MHz operation (7.5ns cycle time) over the full industrial temperature range of –40°C to +85°C. This is confirmed in the AC Electrical Characteristics table (Table 11) for the "70V3599/89S133 Com'l & Ind" version, with tCYC2 = 7.5ns max. The device does not support 166MHz operation in industrial grade-only commercial-grade variants do.

How does the OPTL and OPTR pin configuration affect the 70V3599S133BFGI's I/O voltage levels?

OPTL and OPTR independently configure each port's I/O voltage domain: setting OPTL = VIL (0V) selects 2.5V operation for the left port (requiring VDDQL = 2.5V), while OPTL = VIH (3.3V) selects 3.3V (requiring VDDQL = 3.3V). The same applies to OPTR/VDDQR. This allows mixed-voltage interfacing-for example, connecting the left port to a 2.5V FPGA bank and the right port to a 3.3V microcontroller-without external level shifters.

Does the 70V3599S133BFGI support JTAG boundary-scan, and which pins are used?

Yes, the 70V3599S133BFGI fully supports IEEE 1149.1 JTAG boundary-scan. The required pins are TCK (Test Clock), TMS (Test Mode Select), TDI (Test Data In), TDO (Test Data Out), and TRST (Test Reset). These are dedicated pins in the 208-pin fpBGA package (e.g., TCK = P16, TMS = P3, TDI = B1, TDO = B2, TRST = R3), and their functionality is documented in the Pin Names table (page 5).

What is the purpose of the REPEATL and REPEATR signals in the 70V3599S133BFGI?

REPEATL and REPEATR reset the internal address counter to the last valid address loaded via ADSL or ADSR, respectively. When asserted (VIH), they cause the counter to repeat the last accessed address-enabling hardware-implemented circular buffers or FIFOs without CPU intervention. This feature is especially valuable in streaming applications like packet buffering or ADC/DAC data transfer where predictable, self-contained address sequencing is required.

Can the 70V3599S133BFGI operate with different output timing modes on its left and right ports simultaneously?

Yes, the 70V3599S133BFGI supports independent output timing modes: PL/FTL controls the left port (VIH = pipelined, VIL = flow-through), and PL/FTR controls the right port. This allows one port to use pipelined mode for high-throughput bulk transfers while the other uses flow-through mode for low-latency control register access-maximizing system-level timing flexibility without compromising either requirement.