Renesas 70V7599S133BF

Overview

70V7599S133BF from Integrated Device Technology is a high-speed 128K × 36 synchronous bank-switchable dual-ported SRAM with 4 Mbit capacity, 133 MHz operation (7.5 ns clock cycle), pipelined/flow-through output mode selection, and independent 3.3 V core / 2.5 V or 3.3 V I/O interface per port. It serves as a shared memory buffer in high-bandwidth packet switching and real-time DSP co-processing systems.

For engineers reviewing the 70V7599S133BF datasheet, 70V7599S133BF pinout, 70V7599S133BF application, or 70V7599S133BF equivalent, key selection criteria include dual-port bank arbitration timing, JTAG-compliant IEEE 1149.1 test support, 208-pin fpBGA package compatibility, and differential voltage control via OPTL/OPTR pins for mixed-voltage system integration.

Technical Context

This device implements a true synchronous SRAM core-not a traditional dual-port architecture-enabling independent, concurrent access to any of 64 × 2K × 36 banks via BA0–BA5 address lines on each port. Bank conflict detection is user-managed: simultaneous access to the same bank by both ports invalidates both operations.

It supports full synchronous operation with register-controlled inputs (address, data, byte enables, control), enabling tight timing margins: 1.5 ns setup and 0.5 ns hold at 200 MHz. The self-timed write mechanism maintains fast cycle time without external wait-state logic.

Key Specifications

Pinout & Package

70V7599S133BF is housed in a 208-pin fine-pitch Ball Grid Array (fpBGA) package, designated BF208. The package measures 15 mm × 15 mm × 1.4 mm with 0.8 mm ball pitch and requires dedicated VDD (3.3 V), VDDQ (2.5 V or 3.3 V), and VSS connections per port domain.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362KV18-133BZI and AS7C3256B-133JCIN, the 70V7599S133BF uniquely delivers bank-switchable concurrency, per-port voltage selectability, and JTAG testability in a single 208-pin fpBGA - enabling compact, high-integrity, mixed-voltage embedded memory subsystems.

Availability

70V7599S133BF is available at Aetrix Electronics and suitable for packet switching buffers, DSP co-processor memory, telecom line card buffers, industrial motion controllers, and real-time signal processing systems requiring stable component supply across industrial temperature ranges.

Supply support for 70V7599S133BF 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 shared-memory applications in networking and real-time embedded systems - emphasizing bank-switchable concurrency, mixed-voltage I/O, and IEEE 1149.1 testability.

FAQ

What is the maximum guaranteed operating frequency of the 70V7599S133BF?

The 70V7599S133BF is rated for 133 MHz operation across the industrial temperature range (–40°C to +85°C). This corresponds to a 7.5 ns clock cycle time and is validated under worst-case voltage (3.15 V VDD) and temperature conditions. The device also supports 166 MHz and 200 MHz speed grades, but those are commercial-only and require BC256 packaging - not applicable to the BF208 variant.

How does bank switching work in the 70V7599S133BF, and what happens during a bank conflict?

In the 70V7599S133BF, bank switching is controlled directly by the BA0L–BA5L and BA0R–BA5R pins, selecting one of 64 independent 2K × 36 memory banks per port. If both ports attempt to access the same bank simultaneously, neither access is valid: reads return undefined data, and writes may corrupt memory contents. The device does not resolve conflicts internally - arbitration must be implemented externally or via software-coordinated bank allocation.

Can the left and right ports of the 70V7599S133BF operate at different I/O voltages?

Yes. The 70V7599S133BF supports independent I/O voltage selection per port via the OPTL and OPTR pins. Setting OPTL = VIH configures the left port for 3.3 V I/O operation (requiring VDDQL = 3.3 V), while setting OPTR = VIL configures the right port for 2.5 V I/O operation (requiring VDDQR = 2.5 V). This enables direct interfacing with mixed-voltage SoCs, FPGAs, and ASICs without external level shifters.

What is the function of the ADSL/ADSR and REPEATL/REPEATR signals in the 70V7599S133BF?

ADSL and ADSR are address strobe inputs that latch the current address into an internal counter, enabling auto-incrementing sequential access. REPEATL and REPEATR reset the counter to the last latched address - supporting circular buffer and ping-pong memory access patterns. These features eliminate the need for external address generation logic in streaming applications such as packet buffering or audio sample handling.

Does the 70V7599S133BF support JTAG boundary-scan, and which pins are used?

Yes, the 70V7599S133BF fully supports IEEE 1149.1 JTAG boundary-scan. The required pins are TDI (pin A4), TDO (pin A1), TCK (pin T2), TMS (pin P3), and TRST (pin R3), all located on the 208-pin fpBGA. These pins enable in-system testability of PCB interconnects and facilitate manufacturing test coverage without requiring physical probe access.