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 IDT70824L25PFI

Name: IDT70824L25PFI
Brand: Renesas
SKU: IDT70824L25PFI
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: IDT70824L25PFI

Manufacturer:: Renesas

Category:: Memory

Package:: 80-LQFP

Datasheet:: IDT70824L25PFI.pdf

Description:: IC RAM 64KBIT PARALLEL 80TQFP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,700

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

Product details

Overview

IDT70824L25PFI from Integrated Device Technology is a high-speed 4K × 16-bit Sequential Access Random Access Memory (SARAM™) with dual-port architecture: one asynchronous random-access port and one synchronous sequential-access port. It delivers 25 ns clock cycle time, 20 ns random-access tAA, and 1 mW standby power consumption. Used in real-time data buffering for radar signal processors and digital communications baseband subsystems where concurrent streaming and random lookup are required.

For engineers reviewing the IDT70824L25PFI datasheet, IDT70824L25PFI pinout, IDT70824L25PFI application, or IDT70824L25PFI equivalent, this page provides verified functional identity, validated 80-pin TQFP package mapping, confirmed dual-port timing parameters, and two industry-validated alternative parts with documented interface and power differences.

Technical Context

The IDT70824L25PFI implements a true dual-port SRAM core with independent control paths: the random-access port uses TTL-compatible asynchronous signals (CE, OE, R/W, LB/UB), while the sequential port operates synchronously on SCLK with counter-driven address incrementing (CNTEN), pointer load controls (SLD, SSTRT1/2), and end-of-buffer flags (EOB1/EOB2). Both ports share the same 4K × 16 memory array but access it via separate I/O buses (I/O0–I/O15 and SI/O0–SI/O15).

It supports buffer chaining and STOP flow modes via programmable flow control registers accessed through CMD mode, enabling flexible circular or bounded sequential data handling. Battery backup operation at 2 V ensures data retention during power loss - a feature confirmed only for the 'L' variant and explicitly specified in Table 9.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	4K × 16-bit (64 Kbit) dual-port SRAM array with separate random and sequential I/O paths
Clock Cycle Time	25 ns - defines maximum sustained sequential throughput (40 MHz), critical for real-time streaming
Random Access tAA	20 ns - enables sub-50 ns read/write latency for host CPU or DSP random lookups
Sequential Port tCD	20 ns - guarantees deterministic 40 MHz data capture or output on SI/O bus per clock edge
Standby Current (ISB3)	0.2 mA - ultra-low full-standby power when both ports disabled with CMOS-level inputs
Operating Voltage	5.0 V ±10% - single-supply TTL-compatible interface, no level-shifting required
Temperature Range	−40°C to +85°C - industrial-grade qualification, validated across full voltage and speed range
Data Retention Voltage	2.0 V minimum - supports battery-backed operation during main supply interruption

Pinout & Package

Package: 80-pin Thin Quad Flatpack (TQFP), 14 mm × 14 mm × 1.4 mm body, lead-free and RoHS-compliant per IDT specification PN80-1(4). All seven VCC and ten GND pins must be connected; unused N/C pins (e.g., Pin 8, Pin 22) are no-connect and must remain unconnected.

Pin/Terminal	Circuit Role	Design Meaning
A0–A11	Random-access address inputs	12-bit address bus for 4K-word selection; asynchronous, sampled on CE/R/W transitions
I/O0–I/O15	Random-access bidirectional data	16-bit wide data path; LB/UB enable byte-selective reads/writes without external logic
SCLK	Sequential port clock input	Edge-triggered (LOW-to-HIGH); drives all sequential operations including pointer increment and register access
SI/O0–SI/O15	Sequential port bidirectional data	16-bit synchronous data bus; registered on SCLK rising edge, independent of random port activity
EOB1 / EOB2	End-of-buffer flag outputs	Active-low open-drain flags indicating pointer match with programmed buffer end addresses
RST	Asynchronous reset input	Resets internal registers, clears EOB flags, sets address pointer to zero - no clock dependency

Key Features

Feature	Design Value
Dual-port concurrency	Simultaneous random read/write and sequential streaming without arbitration delay or collision
Programmable buffer flow control	Two independent buffers with configurable BUFFER CHAINING or STOP modes via CMD register writes
Byte-selectable random access	LB and UB pins enable independent lower/upper byte access - eliminates need for external byte masking logic
Low-power standby	1 mW typical standby power (ISB3 = 0.2 mA @ 5 V) - enables always-on buffering in power-constrained systems
Battery-backed data retention	Guaranteed 2 V data retention (VDR = 2.0 V min) - maintains contents during main supply brownout or shutdown
Industrial temperature support	Full functionality validated from −40°C to +85°C at 25 ns speed grade - suitable for outdoor and embedded environments

Applications

Radar Signal Processing Buffer	Digital Communications Baseband
Use Scenario: Real-time capture of pulsed RF return data followed by DSP-based FFT and CFAR processing. IC Role / Device Role / Timing Role: IDT70824L25PFI acts as a ping-pong streaming buffer: sequential port ingests ADC samples at 40 MSPS while random port allows DSP core to fetch arbitrary frames for analysis. Use Value: 20 ns tAA and 20 ns tCD ensure zero-wait-state access for both ingestion and retrieval, eliminating pipeline stalls in high-throughput radar chains.	Use Scenario: Frame assembly/disassembly in TDMA/FDMA base station transceivers with burst-mode traffic. IC Role / Device Role / Timing Role: IDT70824L25PFI serves as a dual-interface frame buffer: sequential port handles continuous symbol stream from modulator/demodulator; random port enables MAC layer to insert/extract control headers. Use Value: Independent LB/UB control permits header-only writes to upper byte while payload streams through lower byte - reducing bus contention and latency.
Avionics Data Recorder Interface	Industrial Motion Control FIFO
Use Scenario: Continuous logging of flight sensor data (IMU, GPS, pressure) with guaranteed retention during power interruption. IC Role / Device Role / Timing Role: IDT70824L25PFI functions as a battery-backed ring buffer: sequential port records sensor streams; random port allows ground system to extract timestamped segments post-flight. Use Value: 2 V data retention capability ensures no loss of critical telemetry during aircraft power cycling or emergency shutdown.	Use Scenario: Synchronizing encoder feedback and PWM command updates in servo drive systems with jitter-sensitive timing. IC Role / Device Role / Timing Role: IDT70824L25PFI implements deterministic motion profile storage: sequential port loads trajectory points from host; random port allows FPGA controller to fetch next point with fixed 20 ns latency. Use Value: 25 ns clock cycle and 20 ns tAA guarantee worst-case access jitter < 5 ns - meeting sub-microsecond motion loop requirements.

Radar Signal Processing Buffer

Digital Communications Baseband

Use Scenario: Real-time capture of pulsed RF return data followed by DSP-based FFT and CFAR processing.

IC Role / Device Role / Timing Role: IDT70824L25PFI acts as a ping-pong streaming buffer: sequential port ingests ADC samples at 40 MSPS while random port allows DSP core to fetch arbitrary frames for analysis.

Use Value: 20 ns tAA and 20 ns tCD ensure zero-wait-state access for both ingestion and retrieval, eliminating pipeline stalls in high-throughput radar chains.

Use Scenario: Frame assembly/disassembly in TDMA/FDMA base station transceivers with burst-mode traffic.

IC Role / Device Role / Timing Role: IDT70824L25PFI serves as a dual-interface frame buffer: sequential port handles continuous symbol stream from modulator/demodulator; random port enables MAC layer to insert/extract control headers.

Use Value: Independent LB/UB control permits header-only writes to upper byte while payload streams through lower byte - reducing bus contention and latency.

Avionics Data Recorder Interface

Industrial Motion Control FIFO

Use Scenario: Continuous logging of flight sensor data (IMU, GPS, pressure) with guaranteed retention during power interruption.

IC Role / Device Role / Timing Role: IDT70824L25PFI functions as a battery-backed ring buffer: sequential port records sensor streams; random port allows ground system to extract timestamped segments post-flight.

Use Value: 2 V data retention capability ensures no loss of critical telemetry during aircraft power cycling or emergency shutdown.

Use Scenario: Synchronizing encoder feedback and PWM command updates in servo drive systems with jitter-sensitive timing.

IC Role / Device Role / Timing Role: IDT70824L25PFI implements deterministic motion profile storage: sequential port loads trajectory points from host; random port allows FPGA controller to fetch next point with fixed 20 ns latency.

Use Value: 25 ns clock cycle and 20 ns tAA guarantee worst-case access jitter < 5 ns - meeting sub-microsecond motion loop requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Cypress CY7C024AV-25AXC	4K × 16, 25 ns, 3.3 V core (5 V tolerant I/O), 35 mA active current, no EOB flags or buffer chaining	Lacks dedicated sequential port control logic (SCLK, CNTEN, SSTRT); requires external state machine for streaming	Choose when migrating to 3.3 V systems and streaming logic resides in FPGA; avoid if EOB-driven interrupt handling is required.
ISSI IS61LV25616AL-10TLI	256K × 16, 10 ns, 5 V only, single-port, no sequential interface, 35 mA active current	No dual-port or sequential access capability; purely asynchronous SRAM with higher density and speed	Choose only for pure random-access upgrades requiring higher capacity; not a functional substitute for IDT70824L25PFI's dual-port streaming architecture.

Compared with CY7C024AV-25AXC and IS61LV25616AL-10TLI, the IDT70824L25PFI uniquely integrates hardware-managed sequential addressing with dual-port concurrency and battery-backed retention - making it irreplaceable in applications requiring autonomous streaming with deterministic random access.

Availability

IDT70824L25PFI is available at Aetrix Electronics and suitable for radar signal processing, digital communications baseband, avionics data recorders, and industrial motion control systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for IDT70824L25PFI 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) was a fabless semiconductor company specializing in timing, memory interface, and RF solutions before its acquisition by Renesas in 2019. IDT pioneered high-performance dual-port memory architectures for real-time embedded systems.

The IDT70824L25PFI belongs to IDT's SARAM™ family, designed specifically for applications demanding concurrent streaming and random access - such as radar, telecom infrastructure, and test equipment - where traditional FIFOs or single-port SRAMs introduce latency bottlenecks.

FAQ

What is the function of the CMD pin on the IDT70824L25PFI?

The CMD (Control Register Enable) pin on the IDT70824L25PFI selects buffer command mode: when CMD is LOW and CE is HIGH, address lines A0–A2 and I/O0–I/O11 access internal registers for configuring start/end addresses and flow control of Buffers #1 and #2. CMD and CE must never be LOW simultaneously, as this violates operational constraints defined in Table 11.

Does the IDT70824L25PFI support true simultaneous access on both ports?

Yes, the IDT70824L25PFI supports true concurrent operation: the random-access port (asynchronous) and sequential-access port (synchronous on SCLK) operate independently with no internal arbitration. Conflicts are avoided by design - e.g., write to I/O0–I/O15 and read from SI/O0–SI/O15 can occur in the same clock cycle without data corruption or wait states.

What is the purpose of EOB1 and EOB2 pins on the IDT70824L25PFI?

EOB1 and EOB2 are active-low end-of-buffer flag outputs that assert when the sequential port address pointer matches the respective buffer's end address. They enable hardware-triggered interrupts or DMA handshaking - for example, EOB1 can signal a processor to reload Buffer #1 while Buffer #2 continues streaming, supporting seamless ping-pong operation in the IDT70824L25PFI.

Can the IDT70824L25PFI operate with only one port enabled?

Yes, the IDT70824L25PFI supports single-port operation: when CE = VIH, the random port enters low-power standby (ISB2 ≤ 90 mA), while the sequential port remains fully functional if SCE = VIL. Conversely, when SCE = VIH, the sequential port powers down and the random port operates normally - enabling flexible power gating per subsystem requirement.

Is battery backup supported on the IDT70824L25PFI, and what voltage is required?

Yes, battery backup is supported exclusively on the 'L' variant (IDT70824L25PFI). Data retention is guaranteed at VCC ≥ 2.0 V (per Table 9), with ICCDR ≤ 4000 µA over military temperature range. This allows connection to a 2.0–3.6 V coin cell or supercapacitor to preserve contents during main supply loss - a feature not available on the 'S' variant.

IDT70824L25PFI Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 80-LQFP

Packaging:: Tray

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Volatile

Memory Format:: RAM

Technology:: SARAM

Memory Size:: 64Kbit

Memory Organization:: 4K x 16

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 25ns

Access Time:: 25 ns

Voltage - Supply:: 4.5V ~ 5.5V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 80-TQFP (14x14)

IDT70824L25PFI FAQ

1.How can I place an order for IDT70824L25PFI through Aetrix?

Please submit a Request for Quotation (RFQ) for IDT70824L25PFI 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 IDT70824L25PFI reliable?

The price and inventory of IDT70824L25PFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT70824L25PFI is usually 5 days.

3.What payment methods are accepted for IDT70824L25PFI?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT70824L25PFI transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IDT70824L25PFI?

IDT70824L25PFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IDT70824L25PFI 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 IDT70824L25PFI?

For technical support, including IDT70824L25PFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT70824L25PFI requirements.

6.How does Aetrix verify that IDT70824L25PFI is sourced from the original manufacturer or authorized distributors?

All IDT70824L25PFI 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 IDT70824L25PFI meets industry standards.

7.What is the process for return or replacement of IDT70824L25PFI?

All IDT70824L25PFI units undergo pre-shipment inspection (PSI). If there is an issue with IDT70824L25PFI, 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 IDT70824L25PFI part is unused and in its original packaging.

Return procedure for IDT70824L25PFI:

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…