Renesas 70V7319S200BC8

Overview

70V7319S200BC8 from IDT (Integrated Device Technology) is a high-speed synchronous bank-switchable dual-ported SRAM with 256K × 18-bit organization (4 Mbit), designed for simultaneous independent access on left and right ports in burst-oriented systems. It delivers 3.4 ns clock-to-data-out (pipelined mode), supports 200 MHz operation, features selectable 3.3 V or 2.5 V I/O interfaces per port, and operates across industrial temperature range (–40°C to +85°C) in the 256-pin BGA package.

For engineers reviewing the 70V7319S200BC8 datasheet, 70V7319S200BC8 pinout, 70V7319S200BC8 application, or 70V7319S200BC8 equivalent, key selection criteria include bank-switchable architecture enabling non-conflicting multi-port access, dual-voltage I/O flexibility, JTAG IEEE 1149.1 compliance, pipelined/flow-through output mode selection, and support for depth expansion via dual chip enables.

Technical Context

The 70V7319S200BC8 implements a true SRAM core with 64 independent 4K × 18 banks, where bank selection is controlled directly by BA0–BA5 pins on each port. Conflicting simultaneous accesses to the same bank by both ports invalidate both operations and risk data corruption - requiring explicit software/hardware coordination.

It uses fully synchronous timing on both ports with registered inputs (address, control, data), enabling minimal setup (1.5 ns) and hold (0.5 ns) times at 200 MHz. The device supports two distinct output modes: pipelined (3.4 ns tCD2, 5 ns cycle time) and flow-through (10 ns tCD1, 15 ns cycle time), selected independently per port via PL/FTL and PL/FTR pins.

Key Specifications

Pinout & Package

70V7319S200BC8 is housed in a 256-pin BGA (package code BC256), with 17 mm × 17 mm body size, 1.0 mm ball pitch, and standard LVTTL-compatible signaling. Power distribution includes dedicated VDD (3.3 V core), VDDQL/VDDQR (I/O supply per port), and multiple VSS balls for noise suppression.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-200BZI and AS7C3256B-20JC, the 70V7319S200BC8 uniquely delivers bank-switchable architecture for conflict-free parallel access, per-port I/O voltage selection, and integrated address counter - making it optimal for high-bandwidth, mixed-voltage, real-time embedded systems demanding deterministic timing and minimal software overhead.

Availability

70V7319S200BC8 is available at Aetrix Electronics and suitable for telecom infrastructure, avionics data fusion, and industrial motion control applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.

Supply support for 70V7319S200BC8 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, is a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance interconnect solutions.

The 70V7319S series was engineered for high-throughput, low-latency memory subsystems in networking, defense, and industrial real-time systems - emphasizing bank-switched concurrency, flexible I/O voltage, and JTAG-enabled testability.

FAQ

What is the maximum operating frequency of the 70V7319S200BC8, and under what conditions is it guaranteed?

The 70V7319S200BC8 is rated for 200 MHz operation, but this speed grade is commercially qualified only and requires VDDQ = 3.3 V on the active port(s), confirmed by setting OPTL/OPTR to VIH. Industrial temperature support (–40°C to +85°C) is limited to 133 MHz. The 200 MHz specification is validated with pipelined output mode (PL/FTX = VIH) and meets tCYC2 ≤ 5 ns and tCD2 ≤ 3.4 ns timing.

How does the bank-switchable architecture of the 70V7319S200BC8 differ from conventional dual-port SRAMs?

Unlike traditional dual-port SRAMs that use arbitration logic and shared memory arrays, the 70V7319S200BC8 implements 64 independent 4K × 18 banks. Each port selects its target bank via BA0–BA5 pins. Simultaneous access to the same bank by both ports invalidates both operations - requiring explicit coordination. This eliminates arbitration latency but shifts conflict resolution to system-level design, enabling higher sustained throughput in well-orchestrated systems.

Can the left and right ports of the 70V7319S200BC8 operate at different I/O voltages, and how is this configured?

Yes - the 70V7319S200BC8 supports independent I/O voltage selection per port. OPTL set to VIH (3.3 V) configures the left port for 3.3 V operation with VDDQL = 3.3 V; OPTL = VIL (0 V) configures it for 2.5 V with VDDQL = 2.5 V. The same applies to OPTR/VDDQR for the right port. Both ports may run at 3.3 V, both at 2.5 V, or one at each voltage - enabling direct interfacing with mixed-voltage FPGAs, ASICs, and microcontrollers without external level shifters.

What is the role of the CNTEN and REPEAT signals in the 70V7319S200BC8, and how do they improve system efficiency?

CNTEN enables the internal address counter, which auto-increments on each clock cycle regardless of ADS or R/W state. REPEAT resets the counter to the last valid address loaded via ADS - useful for circular buffer restarts or burst re-reads. Together, they eliminate CPU or DMA overhead for sequential memory access patterns. For example, in radar sampling, CNTEN allows continuous write to consecutive addresses while REPEAT lets the DSP instantly replay the latest frame without reloading base address.

Does the 70V7319S200BC8 support JTAG boundary-scan, and what IEEE standard does it comply with?

Yes, the 70V7319S200BC8 fully supports IEEE 1149.1 JTAG boundary-scan via dedicated TDI, TDO, TCK, TMS, and TRST pins. This enables board-level interconnect testing, in-system programming verification, and diagnostic access to internal registers and I/O states - critical for high-reliability applications in aerospace, defense, and industrial automation where test coverage and field serviceability are mandatory.