Renesas 70V3599S133BFI

Overview

70V3599S133BFI 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 high-throughput packet buffering and real-time DSP co-processor interfaces.

For engineers reviewing the 70V3599S133BFI datasheet, 70V3599S133BFI pinout, 70V3599S133BFI application, or 70V3599S133BFI equivalent, key selection criteria include guaranteed 133MHz operation across industrial temperature (−40°C to +85°C), independent 2.5V/3.3V I/O voltage selection per port via OPT pins, JTAG IEEE 1149.1 compliance, and support for counter-based burst addressing with repeat functionality.

Technical Context

This device implements fully synchronous dual-port operation with registered address, data, and control inputs on both ports-enabling 1.7ns setup and 0.5ns hold times at 166MHz. Its internal architecture includes separate byte-enable logic per 9-bit data nibble, dual-cycle deselect (DCD) for pipelined mode, and self-timed write cycles that minimize external timing constraints.

The memory array uses true dual-port cells with independent clock domains (CLKL/CLKR), allowing concurrent access without arbitration. Address counter logic supports ADS-triggered load, CNTEN-controlled increment, and REPEAT-driven address recycling-enabling efficient FIFO-like behavior without external controller intervention.

Key Specifications

Pinout & Package

70V3599S133BFI is packaged in a 208-pin fine-pitch Ball Grid Array (fpBGA) with 0.8mm ball pitch and 15mm × 15mm body size. Pin functions are symmetrically distributed across left (L) and right (R) ports, with dedicated clocks, chip enables, byte enables, and I/O banks.

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 70V3599S133BFI uniquely combines 128K × 36 density, per-port voltage selectability, integrated address counter with repeat, and IEEE 1149.1 JTAG-making it optimal for high-reliability, mixed-voltage, burst-oriented embedded systems.

Availability

70V3599S133BFI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and aerospace signal processing applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 70V3599S133BFI 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

IDT (Integrated Device Technology), now part of Renesas Electronics, designs high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.

The 70V3599S133BFI belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered specifically for deterministic, low-latency inter-processor communication and real-time data buffering in multi-clock-domain systems.

FAQ

What is the guaranteed maximum operating frequency of the 70V3599S133BFI across its full temperature range?

The 70V3599S133BFI is guaranteed to operate at 133MHz (7.5ns cycle time) over the full industrial temperature range of −40°C to +85°C. This specification is validated per AC Electrical Characteristics Table 11 in the official datasheet and applies to both pipelined and flow-through output modes under worst-case voltage and process corners.

Does the 70V3599S133BFI support independent I/O voltage levels on its left and right ports?

Yes, the 70V3599S133BFI supports independent 2.5V or 3.3V I/O operation per port using the OPTL and OPTR pins. When OPTL is set to VIH (3.3V), VDDQL must be supplied at 3.3V; when OPTL is VIL (0V), VDDQL must be 2.5V-and likewise for OPTR/VDDQR. This enables mixed-voltage system integration without external level shifters.

How does the REPEAT function work in the 70V3599S133BFI, and what is its practical use case?

The REPEAT function in the 70V3599S133BFI resets the internal address counter to the last valid address loaded via ADS (Address Strobe). It is asserted asynchronously and remains effective until the next ADS event. This enables circular buffer implementations-such as in radar pulse-Doppler processing-where the same memory region is reused continuously without host CPU intervention.

What package type is used for the 70V3599S133BFI, and what are its mechanical dimensions?

The 70V3599S133BFI is supplied in a 208-pin fine-pitch Ball Grid Array (fpBGA) package with 0.8mm ball pitch. The package body measures approximately 15mm × 15mm × 1.4mm. This fpBGA variant (package code BFG208) is distinct from the PQFP and 256-pin BGA options also offered in the 70V3599 family.

Is JTAG boundary-scan supported on the 70V3599S133BFI, and which IEEE standard does it comply with?

Yes, the 70V3599S133BFI fully supports IEEE 1149.1 JTAG boundary-scan functionality via dedicated TCK, TMS, TDI, TDO, and TRST pins. This enables in-system testability, interconnect verification, and programming of associated devices-critical for high-reliability telecom and aerospace PCB assemblies where physical probe access is limited.