Renesas 70V7599S133BF8

Overview

70V7599S133BF8 from Integrated Device Technology is a high-speed 128K × 36 (4 Mbit) synchronous bank-switchable dual-ported SRAM with true SRAM core architecture, 64 independent 2K × 36 banks, 133 MHz operation (7.5 ns clock cycle), and selectable pipelined or flow-through output mode. It supports independent 3.3 V core and dual-voltage I/O (2.5 V or 3.3 V per port) and is used in high-bandwidth packet buffering and telecom switching fabric.

For engineers reviewing the 70V7599S133BF8 datasheet, 70V7599S133BF8 pinout, 70V7599S133BF8 application, or 70V7599S133BF8 equivalent, key selection criteria include bank-switchable dual-port timing isolation, JTAG IEEE 1149.1 compliance, 208-pin fpBGA package compatibility, and support for depth expansion via dual chip enables without external logic.

Technical Context

The 70V7599S133BF8 implements a bank-switchable architecture where each port accesses memory via dedicated BA0–BA5 pins to select one of 64 independent 2K × 36 banks-preventing internal contention only when BAxL ≠ BAxR. Its true SRAM core eliminates traditional dual-port contention hazards but requires explicit bank arbitration by the system controller.

It features fully synchronous operation on both ports with register-controlled inputs (address, data, byte enables, control), enabling minimal setup (1.8 ns) and hold (0.5 ns) times at 133 MHz. The self-timed write and counter-enabled burst addressing (CNTEN/REPEAT) optimize throughput in streaming applications like frame buffering and protocol acceleration.

Key Specifications

Pinout & Package

70V7599S133BF8 is housed in a 208-pin fine-pitch Ball Grid Array (fpBGA) with 0.8 mm ball pitch and 15 mm × 15 mm body size. All VDD pins require 3.3 V supply; VDDQL/VDDQR must match OPTL/OPTR voltage selection (2.5 V or 3.3 V). Ground (VSS) balls are distributed across all four quadrants for low-inductance return paths.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-133AXC and IDT70V27L15PF8, the 70V7599S133BF8 uniquely delivers bank-switchable concurrency without arbitration overhead, dual-voltage I/O flexibility, and hardware-assisted burst addressing - making it optimal for high-throughput, low-latency embedded systems where timing predictability is critical.

Availability

70V7599S133BF8 is available at Aetrix Electronics and suitable for telecom switching fabric, network packet buffering, and industrial real-time control requiring stable component supply across commercial and industrial temperature ranges.

Supply support for 70V7599S133BF8 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 70V7599S product line targets high-bandwidth, low-latency embedded systems requiring deterministic dual-port memory access - especially in telecom infrastructure, test equipment, and real-time control where bank-switchable architecture eliminates arbitration bottlenecks.

FAQ

What is the operating temperature range supported by the 70V7599S133BF8?

The 70V7599S133BF8 is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the "Recommended Operating Temperature and Supply Voltage" table (page 7) of the official datasheet, and applies to all speed grades including the 133 MHz variant in the BF208 package.

Does the 70V7599S133BF8 support both 2.5 V and 3.3 V I/O on the same device?

Yes, the 70V7599S133BF8 supports independent I/O voltage selection per port: OPTL sets the left port's I/O voltage (2.5 V or 3.3 V), and OPTR sets the right port's. Both ports may operate at 2.5 V, both at 3.3 V, or one at each voltage - as specified in the Pin Names table (page 5) and DC Operating Conditions (pages 7–8).

How does bank-switching prevent memory access conflicts in the 70V7599S133BF8?

The 70V7599S133BF8 avoids internal contention by requiring BA0L–BA5L ≠ BA0R–BA5R for simultaneous access. If both ports target the same bank, neither access is valid and data corruption may occur. This explicit bank arbitration shifts conflict resolution to the system controller - ensuring deterministic timing unlike conventional dual-port SRAMs with internal arbitration logic.

What is the significance of the "S133" suffix in the 70V7599S133BF8 part number?

The "S133" suffix denotes the speed grade: guaranteed operation up to 133 MHz (7.5 ns clock cycle time) across commercial (0°C to +70°C) and industrial (–40°C to +85°C) temperature ranges. This is validated in the AC Electrical Characteristics table (page 11), where tCYC2 (pipelined) is specified at 7.5 ns max and tCD2 at 4.2 ns max.

Can the 70V7599S133BF8 be used in depth-expanded memory configurations without external logic?

Yes, the 70V7599S133BF8 supports depth expansion using its dual chip enables (CE0X and CE1X). By tying CE0 of one device LOW and CE1 HIGH while reversing the pair on the adjacent device, multiple units can be stacked on the same address/data bus - eliminating the need for external address decoders or glue logic, as described in the Features list (page 1) and Truth Table I (page 6).