Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Memory > Memory

Renesas 70V28L15PFI8/2703

Name: 70V28L15PFI8/2703
Brand: Renesas
SKU: 70V28L15PFI8/2703
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 70V28L15PFI8/2703

Manufacturer:: Renesas

Category:: Memory

Package:: 100-LQFP

Datasheet:: 70V28L15PFI8/2703.pdf

Description:: IC SRAM 1MBIT PARALLEL 100TQFP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,895

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

70V28L15PFI8/2703 from Integrated Device Technology is a high-speed 3.3V 64K × 16 true dual-ported static RAM with independent left/right ports, 15 ns max access time (commercial grade), LVTTL-compatible I/O, and on-chip semaphore/arbiter logic for inter-processor synchronization in real-time embedded systems.

For engineers reviewing the 70V28L15PFI8/2703 datasheet, 70V28L15PFI8/2703 pinout, 70V28L15PFI8/2703 application, or 70V28L15PFI8/2703 equivalent, this device supports simultaneous asynchronous read/write to shared memory locations, hardware BUSY arbitration, interrupt flag signaling, and byte-selectable upper/lower data access - critical for deterministic multi-CPU communication and lock-free resource sharing.

Technical Context

The 70V28L15PFI8/2703 implements fully asynchronous dual-port operation with separate address, control, and bidirectional I/O buses per port - enabling concurrent access without clock domain constraints. Its internal arbitration logic monitors address matches between ports and asserts push-pull BUSY flags to stall conflicting writes.

It integrates dedicated 3-bit addressable semaphore latches (A0–A2) accessible via CE=VIH/SEM=VIL, supporting token-passing protocols without software overhead. Interrupt flags (INTL/INTR) are triggered by writes to fixed addresses FFFE_H (left) and FFFF_H (right), providing mailbox-style inter-processor signaling.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	64K × 16 bits (1,048,576 total bits), true dual-ported SRAM array allowing simultaneous read/write to same location
Access Time (tAA)	15 ns max (commercial temperature range), enabling ≤66.7 MHz sustained random access throughput per port
Supply Voltage	3.3 V ± 0.3 V - single LVTTL-compatible rail; no level-shifting required for 3.3V microcontrollers or FPGAs
Power Consumption	Active: 145 mA typ (235 mA max); Standby (ISB3): 0.2 mA typ - supports low-power idle states in battery-backed systems
Operating Temperature	–40°C to +85°C (industrial grade confirmed for 70V28L20; 70V28L15PFI8/2703 is commercial-only per datasheet footnote)
Package	100-pin TQFP (14 mm × 14 mm × 1.4 mm), RoHS-compliant, green material option available
Bus Interface	Fully independent left/right ports with separate CE0/CE1, R/W, OE, UB/LB, SEM, INT, and BUSY signals - enables depth/width expansion without glue logic

Pinout & Package

70V28L15PFI8/2703 is housed in a 100-pin Thin Quad Flatpack (TQFP) with 0.5 mm pitch. All VCC pins must be connected to 3.3 V; all GND pins require solid grounding. The package body measures 14 mm × 14 mm × 1.4 mm.

Pin/Terminal	Circuit Role	Design Meaning
CE0L, CE1L / CE0R, CE1R	Dual chip enable inputs per port	Enable/disable each port independently; CE0/CE1 logic allows TTL- or CMOS-level active-low selection and automatic power-down when deselected
R/WL, R/WR	Read/write control per port	Active-low signal determining direction of data transfer; combined with CE and OE to define read/write cycles per Truth Table II
OEL, OER	Output enable per port	Tri-states I/O bus when high; used with R/W to isolate outputs during writes or disable reads without affecting internal state
A0L–A15L / A0R–A15R	Address inputs per port	16-bit address bus per port - supports full 64K address space; address match detection triggers BUSY arbitration
I/O0L–I/O15L / I/O0R–I/O15R	Bidirectional data I/O per port	16-bit parallel data path; upper-byte (I/O8–I/O15) and lower-byte (I/O0–I/O7) selectable via UBL/UBR and LBL/LBR
SEML, SEMR	Semaphore enable per port	Active-low input enabling access to 8 semaphore latches (addressed by A0–A2); CE=VIH/SEM=VIL required for semaphore mode
INTL, INTR	Interrupt flag outputs	Push-pull outputs asserted when opposite port writes to FFFE_H (INTL) or FFFF_H (INTR); self-clearing on read/access
BUSYL, BUSYR	Busy status per port	Push-pull output (Master) or input (Slave) indicating address contention; blocks writes when asserted; no external pull-ups needed
M/S	Master/Slave select	VIH configures device as Master (BUSY outputs); VIL configures as Slave (BUSY inputs); determines arbitration behavior
UBL, UBR / LBL, LBR	Upper/lower byte select per port	Enable byte-granular write masking - permits 8-bit updates without disturbing adjacent bytes in 16-bit word systems

Key Features

Feature	Design Value
True dual-port architecture	Enables deterministic, zero-wait-state concurrent access from two independent processors or bus masters - eliminates software polling delays
Hardware semaphore logic	Eight dedicated, addressable (A0–A2) binary latches provide lock-free, atomic resource allocation without CPU intervention or instruction overhead
Automatic BUSY arbitration	Detects address collisions in real time and asserts push-pull BUSY flags to stall conflicting writes - prevents data corruption without external logic
Independent port power management	Dual CE0/CE1 per port enables selective standby: ISB3 = 0.2 mA typ when both ports fully deselected (CMOS-level inputs)
Interrupt mailbox addressing	Fixed-location interrupt triggers (FFFE_H/FFFF_H) allow reliable inter-processor messaging with user-defined 16-bit payload - no reserved memory overhead

Applications

Industrial PLC Communication Hub	Real-Time Avionics Data Buffer
Use Scenario: Two independent PLC CPUs share sensor/actuator data via a common memory region while avoiding race conditions during concurrent updates. IC Role / Device Role / Timing Role: 70V28L15PFI8/2703 acts as a hardware-synchronized shared memory buffer with BUSY-driven write blocking and semaphore-controlled critical section entry. Use Value: Eliminates need for software mutexes or polling loops - guarantees sub-15 ns response to address conflicts and deterministic worst-case latency.	Use Scenario: Flight control and navigation processors exchange telemetry and command packets through a tightly coupled dual-port interface requiring guaranteed atomicity and zero-latency handshaking. IC Role / Device Role / Timing Role: 70V28L15PFI8/2703 serves as a mailbox-based inter-processor communication channel with interrupt-triggered packet arrival notification and byte-selectable payload writes. Use Value: Enables lock-free, cycle-accurate data exchange at 66.7 MHz - meets DO-254 timing certification requirements for safety-critical avionics subsystems.
Multi-Core DSP Co-Processing Node	High-Speed Test Equipment Memory Bridge
Use Scenario: A host controller and DSP co-processor jointly access FFT coefficient tables and result buffers, requiring conflict-free concurrent read/write operations. IC Role / Device Role / Timing Role: 70V28L15PFI8/2703 functions as a non-blocking shared memory fabric with independent 16-bit I/O paths and hardware semaphore coordination for pipeline stage synchronization. Use Value: Sustains full bandwidth on both ports simultaneously - avoids pipeline stalls caused by memory arbitration, improving overall DSP throughput by ≥35% vs. single-port alternatives.	Use Scenario: Automated test equipment routes high-speed digital patterns between pattern generator and acquisition logic using a common memory staging area. IC Role / Device Role / Timing Role: 70V28L15PFI8/2703 operates as a deterministic, low-jitter memory bridge with 15 ns access guarantee and push-pull BUSY signaling for precise trigger alignment. Use Value: Reduces pattern setup/hold uncertainty to <10 ns - enables sub-nanosecond timing resolution in 100+ MHz digital test applications.

Industrial PLC Communication Hub

Real-Time Avionics Data Buffer

Use Scenario: Two independent PLC CPUs share sensor/actuator data via a common memory region while avoiding race conditions during concurrent updates.

IC Role / Device Role / Timing Role: 70V28L15PFI8/2703 acts as a hardware-synchronized shared memory buffer with BUSY-driven write blocking and semaphore-controlled critical section entry.

Use Value: Eliminates need for software mutexes or polling loops - guarantees sub-15 ns response to address conflicts and deterministic worst-case latency.

Use Scenario: Flight control and navigation processors exchange telemetry and command packets through a tightly coupled dual-port interface requiring guaranteed atomicity and zero-latency handshaking.

IC Role / Device Role / Timing Role: 70V28L15PFI8/2703 serves as a mailbox-based inter-processor communication channel with interrupt-triggered packet arrival notification and byte-selectable payload writes.

Use Value: Enables lock-free, cycle-accurate data exchange at 66.7 MHz - meets DO-254 timing certification requirements for safety-critical avionics subsystems.

Multi-Core DSP Co-Processing Node

High-Speed Test Equipment Memory Bridge

Use Scenario: A host controller and DSP co-processor jointly access FFT coefficient tables and result buffers, requiring conflict-free concurrent read/write operations.

IC Role / Device Role / Timing Role: 70V28L15PFI8/2703 functions as a non-blocking shared memory fabric with independent 16-bit I/O paths and hardware semaphore coordination for pipeline stage synchronization.

Use Value: Sustains full bandwidth on both ports simultaneously - avoids pipeline stalls caused by memory arbitration, improving overall DSP throughput by ≥35% vs. single-port alternatives.

Use Scenario: Automated test equipment routes high-speed digital patterns between pattern generator and acquisition logic using a common memory staging area.

IC Role / Device Role / Timing Role: 70V28L15PFI8/2703 operates as a deterministic, low-jitter memory bridge with 15 ns access guarantee and push-pull BUSY signaling for precise trigger alignment.

Use Value: Reduces pattern setup/hold uncertainty to <10 ns - enables sub-nanosecond timing resolution in 100+ MHz digital test applications.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Cypress CY7C028V-15ZC	Same 64K×16 organization and 15 ns access, but uses 3.3 V core + 2.5 V I/O; requires dual-supply design and has different BUSY/SEM pin mapping	Lacks integrated master/slave M/S pin; arbitration requires external logic for multi-device arrays	Choose only if existing board uses Cypress footprint and dual-voltage regulation is already present
IDT70V36S15PF8	Higher density (128K×16), same 15 ns speed, but lacks semaphore logic and interrupt mailbox addressing	Requires software-managed semaphores; no hardware-assisted inter-processor signaling - increases firmware complexity and latency	Select when memory capacity is primary requirement and arbitration can be handled in software or external logic

Compared with CY7C028V-15ZC and IDT70V36S15PF8, the 70V28L15PFI8/2703 uniquely delivers integrated hardware semaphores, master/slave arbitration control via M/S, and interrupt mailbox addressing - reducing BOM count, PCB area, and firmware development effort for real-time multi-processor systems.

Availability

70V28L15PFI8/2703 is available at Aetrix Electronics and suitable for industrial PLC communication hubs, real-time avionics data buffers, and multi-core DSP co-processing nodes requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for 70V28L15PFI8/2703 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 computing solutions.

The 70V28L15PFI8/2703 belongs to IDT's legacy high-speed dual-port SRAM product line, engineered specifically for deterministic inter-processor communication in real-time embedded systems where hardware arbitration and low-latency memory sharing are critical.

FAQ

What is the maximum operating temperature range supported by the 70V28L15PFI8/2703?

The 70V28L15PFI8/2703 is rated for commercial temperature operation only: 0°C to +70°C. While the datasheet notes industrial-grade variants (e.g., 70V28L20) support –40°C to +85°C, the "15" speed suffix and PFI8/2703 ordering code confirm this specific part is commercial-grade. Thermal derating or extended testing is required for use beyond 70°C.

How does the BUSY arbitration logic function in master versus slave configuration for the 70V28L15PFI8/2703?

In master mode (M/S = VIH), BUSYL and BUSYR are push-pull outputs that assert LOW when address contention occurs, internally inhibiting writes on the contending port. In slave mode (M/S = VIL), they become inputs - tying BUSYL or BUSYR LOW disables writes to that port entirely. The 70V28L15PFI8/2703 requires no external pull-ups in either mode due to its totem-pole output structure.

Can the 70V28L15PFI8/2703 be used for 32-bit data bus expansion, and how is it implemented?

Yes - the 70V28L15PFI8/2703 supports 32-bit expansion via master/slave cascading. One device is configured as master (M/S = VIH), another as slave (M/S = VIL); the master's BUSY outputs drive the slave's BUSY inputs to coordinate arbitration across both devices. This preserves full 15 ns access speed without external logic, as documented in the IDT70V28 functional description.

What are the valid voltage levels for VIH and VIL on control inputs like CE, R/W, and OE for the 70V28L15PFI8/2703?

Per the datasheet DC specifications, VIH is defined as ≥2.0 V (with VCC = 3.3 V ± 0.3 V), and VIL is ≤0.8 V. Inputs below –0.3 V or above VCC + 0.3 V risk damage. The device accepts standard LVTTL logic levels, ensuring direct compatibility with 3.3 V FPGAs, microcontrollers, and ASICs without level shifters.

How are the eight semaphore flags addressed and controlled on the 70V28L15PFI8/2703?

The eight semaphore flags are addressed using A0–A2 (3 bits) and accessed only when CE = VIH and SEM = VIL - a distinct control mode separate from normal RAM operation. Writing to I/O0 sets/clears the selected flag; reading returns the flag state across all 16 I/O lines. This dedicated semaphore mode prevents accidental overwrites of RAM contents during token-passing sequences.

70V28L15PFI8/2703 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 100-LQFP

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Volatile

Memory Format:: SRAM

Technology:: SRAM - Dual Port, Asynchronous

Memory Size:: 1Mbit

Memory Organization:: 64K x 16

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 15ns

Access Time:: 15 ns

Voltage - Supply:: 3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 100-TQFP (14x14)

70V28L15PFI8/2703 FAQ

1.How can I place an order for 70V28L15PFI8/2703 through Aetrix?

Please submit a Request for Quotation (RFQ) for 70V28L15PFI8/2703 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 70V28L15PFI8/2703 reliable?

The price and inventory of 70V28L15PFI8/2703 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V28L15PFI8/2703 is usually 5 days.

3.What payment methods are accepted for 70V28L15PFI8/2703?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V28L15PFI8/2703 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 70V28L15PFI8/2703?

70V28L15PFI8/2703 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 70V28L15PFI8/2703 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 70V28L15PFI8/2703?

For technical support, including 70V28L15PFI8/2703 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V28L15PFI8/2703 requirements.

6.How does Aetrix verify that 70V28L15PFI8/2703 is sourced from the original manufacturer or authorized distributors?

All 70V28L15PFI8/2703 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 70V28L15PFI8/2703 meets industry standards.

7.What is the process for return or replacement of 70V28L15PFI8/2703?

All 70V28L15PFI8/2703 units undergo pre-shipment inspection (PSI). If there is an issue with 70V28L15PFI8/2703, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 70V28L15PFI8/2703 part is unused and in its original packaging.

Return procedure for 70V28L15PFI8/2703:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…