Renesas 70V9199L9PFI8

Overview

70V9199L9PFI8 from Renesas Electronics (formerly IDT) is a high-speed, synchronous, pipelined dual-port static RAM with true dual-ported 128K × 9-bit memory architecture, 9 ns clock-to-data access in pipelined mode, LVTTL-compatible 3.3 V ±0.3 V operation, and industrial temperature range (–40°C to +85°C). It enables simultaneous read/write access from independent left and right ports in real-time communication buffers and digital signal processing systems.

For engineers reviewing the 70V9199L9PFI8 datasheet, 70V9199L9PFI8 pinout, 70V9199L9PFI8 application, or 70V9199L9PFI8 equivalent, key selection criteria include pipelined vs. flow-through output timing modes, dual chip enable for depth expansion, address counter control (CNTEN/CNTRST), synchronous register-based interface, and low-power standby (1.5 mW typ.) under CE-driven power-down.

Technical Context

The 70V9199L9PFI8 implements fully synchronous dual-port operation with registered address, data, and control inputs clocked on the rising edge of CLKL/CLKR - delivering 4 ns setup / 1 ns hold timing margins. Its internal architecture supports two independent output modes: pipelined (FT/PIPE = VIH, tCYC2 = 15 ns, tCD2 = 9 ns max) and flow-through (FT/PIPE = VIL, tCYC1 = 25 ns, tCD1 = 20 ns max), selectable per port.

It integrates dual address counters (one per port) with asynchronous ADS strobe and synchronous CNTEN/CNTRST controls, enabling burst-mode sequential addressing without external logic. Dual CE0/CE1 enables per port allow depth expansion without glue logic, while automatic self-timed write ensures minimal cycle time dependency on clock duty cycle.

Key Specifications

Pinout & Package

70V9199L9PFI8 is housed in a 100-pin Thin Quad Flatpack (TQFP, package code PNG100) with exposed pad not electrically connected. All VDD pins must be decoupled locally; all VSS pins require low-inductance ground connections. Pin 1 is located at top-left corner (notch-marked side).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1371BV33-100AXC and AS7C3128B-12JIN, the 70V9199L9PFI8 uniquely balances pipelined performance (9 ns tCD2), integrated address counters, dual CE expansion, and ultra-low standby (1.5 mW), making it optimal for resource-constrained, real-time embedded systems requiring both speed and configurability.

Availability

70V9199L9PFI8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, DSP co-processing, and test equipment requiring stable component supply, long-lifecycle support, and guaranteed industrial-grade qualification.

Supply support for 70V9199L9PFI8 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 Corporation is a global semiconductor leader formed from the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.

The 70V9199L9PFI8 belongs to Renesas' legacy IDT synchronous dual-port SRAM product line, engineered specifically for deterministic, low-latency shared memory in real-time embedded systems where concurrent access, burst efficiency, and power-aware operation are critical.

FAQ

What is the maximum operating frequency of the 70V9199L9PFI8 in pipelined mode?

The 70V9199L9PFI8 supports up to 66 MHz operation in pipelined mode, derived from its 15 ns clock cycle time (tCYC2). This is validated across the full industrial temperature range (–40°C to +85°C) and 3.3 V ±0.3 V supply. The device achieves this with guaranteed 9 ns clock-to-data valid (tCD2) and 6 ns minimum clock high/low times (tCH2/tCL2), ensuring robust timing margin in high-speed designs.

Does the 70V9199L9PFI8 support independent output modes on left and right ports?

Yes, the 70V9199L9PFI8 supports independent output mode selection per port via FT/PIPEL (left) and FT/PIPER (right). Each pin configures its respective port for pipelined (VIH) or flow-through (VIL) operation. This allows mixed-mode usage - for example, left port in pipelined mode for high-throughput data streaming, and right port in flow-through mode for low-latency control register access - without hardware modification.

How does the address counter function in the 70V9199L9PFI8, and what signals control it?

The 70V9199L9PFI8 integrates independent 17-bit address counters for left and right ports, controlled by CNTENL/CNTRSTL and CNTENR/CNTRSTR. When CNTEN = low on a rising clock edge, the counter increments; CNTRST = low resets it to address 0. ADS (Address Strobe) selects between external address loading (ADS = low) or counter-generated address (ADS = high). This enables autonomous burst addressing without host CPU intervention.

What power-saving features does the 70V9199L9PFI8 offer, and how are they activated?

70V9199L9PFI8 offers three power-saving states: active (500 mW typ.), standby (1.5 mW typ.), and full standby (0.4 mW typ.). Standby is activated per port by setting CE0 = high and CE1 = low (or vice versa); full standby occurs when both CE0 and CE1 are driven to CMOS high/low thresholds (e.g., >VDD–0.2 V or <0.2 V). These modes are fully synchronous and do not require reset - the device resumes operation within one clock cycle upon re-enable.

Is the 70V9199L9PFI8 pin-compatible with other members of the IDT70V9xxx family, such as the 70V9099?

No, the 70V9199L9PFI8 is not pin-compatible with the 70V9099. While both use the same 100-pin TQFP (PNG100) package, the 70V9199L9PFI8 implements a 128K × 9-bit organization with dedicated I/O0–I/O8 pins per port, whereas the 70V9099 is 128K × 8-bit and uses I/O0–I/O7. Pin functions differ - notably, 70V9199L9PFI8 assigns I/O8R/I/O8L to pins 89/12, which are NC on 70V9099 - requiring PCB redesign for substitution.