Renesas 70V3599S166BF

Overview

70V3599S166BF 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 166MHz with 3.6ns clock-to-data-out (pipelined), supports selectable 3.3V or 2.5V I/O interfaces per port, and delivers 12Gbps aggregate bandwidth. It is used in real-time packet buffering for telecom line cards and FPGA co-processor memory subsystems.

For engineers reviewing the 70V3599S166BF datasheet, 70V3599S166BF pinout, 70V3599S166BF application, or 70V3599S166BF equivalent, this page provides verified timing parameters, validated fpBGA-208 pin mapping, confirmed industrial-grade voltage flexibility (3.3V core / 2.5V or 3.3V I/O), JTAG-compliant test interface support, and direct alternatives for depth-expanded memory designs.

Technical Context

The 70V3599S166BF implements fully synchronous dual-port operation with independent clock domains (CLKL/CLKR), pipelined or flow-through output modes controlled by PL/FTL and PL/FTR pins, and self-timed write cycles enabling minimal cycle time. Its address counter supports ADS-triggered load and REPEAT-driven auto-increment, with CNTEN enabling burst address generation without external logic.

All control, data, and address inputs are registered-providing 1.7ns setup and 0.5ns hold times at 166MHz-and dual chip enables (CE0/CE1 per port) allow seamless depth expansion. The device integrates JTAG boundary-scan (IEEE 1149.1) with TCK, TMS, TDI, TDO, and TRST pins for production testability.

Key Specifications

Pinout & Package

208-pin fpBGA (package code BF208), 0.8mm ball pitch, 15mm × 15mm × 1.4mm profile. All VDD pins require 3.3V ±150mV; VDDQL/VDDQR must match OPTL/OPTR logic level (3.3V for VIH, 2.5V for VIL).

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT70V3599S133BF, the 70V3599S166BF delivers 25% higher bandwidth but sacrifices industrial temperature support; versus CY7C1362BV33-166AXC, it adds voltage-flexible I/O, JTAG, and hardware address automation-reducing FPGA logic utilization and board-level complexity.

Availability

70V3599S166BF is available at Aetrix Electronics and suitable for telecom infrastructure, FPGA-accelerated computing, and industrial motion control systems requiring stable component supply with guaranteed long-term availability.

Supply support for 70V3599S166BF 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) is a global semiconductor leader specializing in high-performance timing, memory, and embedded solutions for networking, automotive, and industrial markets.

The IDT70V3599 family was designed specifically for deterministic, low-latency memory sharing between heterogeneous processors-targeting applications demanding simultaneous, conflict-free access to shared data structures.

FAQ

What is the maximum guaranteed operating frequency of the 70V3599S166BF?

The 70V3599S166BF is commercially rated for guaranteed operation at 166MHz (6ns clock cycle time) in pipelined output mode. This specification is validated across the full commercial temperature range (0°C to +70°C) and requires proper VDD = 3.3V ±150mV and matched I/O supply (VDDQL/VDDQR = 3.3V or 2.5V per port). Industrial-grade 133MHz operation is supported by the pin-compatible 70V3599S133BF variant.

Does the 70V3599S166BF support mixed-voltage I/O operation between its two ports?

Yes, the 70V3599S166BF supports independent I/O voltage selection per port: OPTL sets left-port I/O voltage (3.3V or 2.5V), and OPTR sets right-port I/O voltage. This allows one port to interface with a 3.3V FPGA bank while the other connects to a 2.5V ASIC-eliminating level-shifters and reducing BOM count. VDDQL and VDDQR must be supplied at the corresponding voltage levels.

How does the REPEAT function work in the 70V3599S166BF, and what is its design benefit?

The REPEATL/REPEATR signal resets the internal address counter to the last valid address loaded via ADSL/ADSR. This enables hardware-accelerated burst transfers-e.g., reading a fixed 64-word block repeatedly without CPU intervention. Unlike software loops, REPEAT operates synchronously with the clock and requires no instruction fetch overhead, making it ideal for real-time DMA engines and motion control waveform replay.

What is the purpose of dual chip enables (CE0/CE1) on each port of the 70V3599S166BF?

Dual chip enables (CE0L/CE1L and CE0R/CE1R) provide flexible depth expansion: CE0X = LOW and CE1X = HIGH enables the port, while CE0X = HIGH and CE1X = LOW places it in power-down mode. This pairing eliminates the need for external decode logic when stacking multiple devices-each additional 70V3599S166BF can be enabled via unique CE0/CE1 combinations, simplifying high-density memory subsystem design.

Is JTAG boundary-scan supported on the 70V3599S166BF, and which pins are used?

Yes, the 70V3599S166BF fully complies with IEEE 1149.1 JTAG boundary-scan. Dedicated pins include TCK (Test Clock), TMS (Test Mode Select), TDI (Test Data In), TDO (Test Data Out), and TRST (Test Reset). These signals are electrically isolated from functional I/O and operate independently of memory operation-enabling in-system test, interconnect verification, and programming of adjacent CPLDs/FPGAs without disrupting SRAM functionality.