Renesas 70V7599S200BC8

Overview

70V7599S200BC8 from IDT (now Renesas) is a high-speed, 128K × 36 (4 Mbit), synchronous bank-switchable dual-ported SRAM with true SRAM core architecture, 200 MHz operation, 3.4 ns clock-to-data-out (pipelined), and independent 3.3 V core / selectable 3.3 V or 2.5 V I/O interface per port. It enables concurrent memory access in telecom packet buffers and network processor data planes.

For engineers reviewing the 70V7599S200BC8 datasheet, 70V7599S200BC8 pinout, 70V7599S200BC8 application, or 70V7599S200BC8 equivalent, key selection criteria include bank-switchable arbitration control, dual-port timing independence, JTAG IEEE 1149.1 compliance, and support for depth expansion via dual chip enables without external logic.

Technical Context

This device implements a true SRAM core-not a traditional dual-port SRAM-enabling deterministic bank arbitration via dedicated BA0–BA5 address lines per port. Each of its 64 independent 2K × 36 banks can be accessed simultaneously by left and right ports only when bank addresses differ (BA0L–BA5L ≠ BA0R–BA5R); conflict causes invalid access and potential data corruption.

It supports two output modes: pipelined (3.4 ns tCD2 @ 200 MHz) and flow-through (10 ns tCD1), with fully synchronous operation on both ports. Control inputs-including ADS, CNTEN, and REPEAT-are asynchronous to clock but register-controlled, enabling burst-mode address generation and repeat addressing for FIFO-like behavior without external counters.

Key Specifications

Pinout & Package

70V7599S200BC8 is housed in a 256-pin Ball Grid Array (BC256) package with 17 mm × 17 mm body, 1.0 mm ball pitch, and 1.4 mm height. Power and ground balls are distributed across the array for low-inductance decoupling; VDD (3.3 V core) and VDDQ (I/O supply) pins are segregated per port.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362AV25-200BZI and 70V9269L15PF8, the 70V7599S200BC8 uniquely delivers deterministic bank arbitration, pipelined 3.4 ns access at 200 MHz, and integrated address counter-making it optimal for latency-critical, high-bandwidth dual-access systems.

Availability

70V7599S200BC8 is available at Aetrix Electronics and suitable for telecom infrastructure, network processor design, and high-speed test equipment requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for 70V7599S200BC8 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, is a fabless semiconductor company specializing in high-performance timing, memory, and interface solutions for communications and computing markets.

The 70V7599S product line was designed specifically for high-bandwidth, low-latency dual-access memory applications in networking, telecom, and test instrumentation-emphasizing deterministic timing, flexible voltage interfaces, and scalable memory architectures.

FAQ

What is the maximum operating frequency supported by the 70V7599S200BC8?

The 70V7599S200BC8 supports a maximum clock frequency of 200 MHz, delivering a 5 ns clock cycle time and 14 Gbps aggregate bandwidth. This speed grade is validated for commercial temperature range (0°C to +70°C) and requires VDDQ set to 3.3 V (i.e., OPTL and OPTR driven to VIH) per port. Operation at 200 MHz is not supported in industrial temperature range or with 2.5 V I/O.

How does bank arbitration work in the 70V7599S200BC8?

The 70V7599S200BC8 uses explicit bank address pins (BA0L–BA5L and BA0R–BA5R) to assign each port to one of 64 independent 2K × 36 banks. Access is valid only when BA0L–BA5L ≠ BA0R–BA5R. If both ports target the same bank simultaneously, neither access completes correctly-data may be corrupted during writes or invalid during reads. No internal arbitration logic intervenes; control resides entirely with the system designer.

Can the left and right ports operate at different I/O voltages on the 70V7599S200BC8?

Yes-the 70V7599S200BC8 supports independent I/O voltage selection per port. OPTL and OPTR are separate DC control inputs: driving OPTL to VIH (3.3 V) configures VDDQL for 3.3 V operation, while driving OPTR to VIL (0 V) configures VDDQR for 2.5 V operation. This allows mixed-voltage interfacing-for example, connecting the left port to a 3.3 V FPGA and the right port to a 2.5 V ASIC-without external level shifters.

What is the purpose of the CNTEN and REPEAT signals in the 70V7599S200BC8?

CNTEN enables the internal address counter on each port, advancing the address on every rising CLK edge regardless of CE or OE state. REPEAT latches the last valid address loaded via ADS and resets the counter to that address when asserted. Together, they enable autonomous burst transfers-e.g., reading successive packet headers-without CPU address updates, reducing host overhead and improving throughput in streaming applications.

Which package variant corresponds to the 70V7599S200BC8 part number?

The "BC8" suffix in 70V7599S200BC8 denotes the 256-pin Ball Grid Array (BC256) package: 17 mm × 17 mm body, 1.0 mm ball pitch, and 1.4 mm height. This differs from the BF208 (208-pin fpBGA) and DR208 (208-pin PQFP) variants. The BC256 package provides superior thermal and electrical performance for high-speed 200 MHz operation and supports full pin functionality including all JTAG and bank control signals.