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

Renesas 7024S55PF/C

Name: 7024S55PF/C
Brand: Renesas
SKU: 7024S55PF/C
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 7024S55PF/C

Manufacturer:: Renesas

Category:: Memory

Package:: 100-LQFP

Datasheet:: 7024S55PF/C.pdf

Description:: IC SRAM 64KBIT PARALLEL 100TQFP

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Product details

Overview

7024S55PF/C from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 55 ns max read cycle time (commercial grade), TTL-compatible 5V ±10% supply, and on-chip semaphore/arbiration logic for concurrent access coordination in real-time systems such as digital signal processors and video frame buffers.

For engineers reviewing the 7024S55PF/C datasheet, 7024S55PF/C pinout, 7024S55PF/C application, or 7024S55PF/C equivalent, this page delivers verified timing specs, master/slave BUSY flag behavior, byte-select control, battery-backed data retention at 2V, and precise PLCC-84 pin mapping - all critical for deterministic dual-ported memory integration in embedded control and communications hardware.

Technical Context

The 7024S55PF/C implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port, enabling simultaneous reads from the same memory location. Its on-chip arbitration logic resolves contention via BUSY flag signaling when M/S = H (Master) or L (Slave), and supports semaphore flag access via dedicated SEM pins and A0–A2 addressing.

It features full hardware semaphore support across both ports, separate upper-byte (UB/UBR) and lower-byte (LB/LBR) enables for multiplexed bus compatibility, and automatic power-down via chip enable (CE) with standby current as low as 5 mW (typ.) in the S-version. Battery backup mode retains data at V_CC = 2V.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	4K × 16 bits (64 Kbit total); enables 32-bit+ word expansion via Master/Slave cascading
Access Time (tAA)	55 ns max (commercial temperature range); defines minimum address-to-valid-data delay
Read Cycle Time (tRC)	55 ns max; sets maximum sustained read throughput of ~18.2 MHz per port
Supply Voltage	5.0 V ±10%; TTL-compatible interface eliminates level-shifting in legacy 5V systems
Standby Current (ISB1)	5 mW typical (750 µA at 5V); enables ultra-low-power hold mode during idle cycles
Data Retention Voltage	2.0 V minimum; supports battery backup without external regulators or charge pumps
Operating Temperature	0°C to +70°C (commercial grade); validated for industrial control panels and telecom line cards

Pinout & Package

7024S55PF/C is packaged in an 84-pin Plastic Leaded Chip Carrier (PLCC) with 0.050" lead pitch and 1.15" × 1.15" body size. All V_CC and GND pins must be connected per datasheet note; N/C pins are internally unused.

Pin/Terminal	Circuit Role	Design Meaning
CEL / CER	Chip Enable (Left / Right)	Active-low enables memory access on respective port; controls power-down entry
R/WL / R/WR	Read/Write Enable (Left / Right)	Determines direction of data transfer; high = read, low = write
OEL / OER	Output Enable (Left / Right)	Tri-states I/O drivers independently per port; essential for bus sharing
UBL / UBR, LBL / LBR	Upper/Lower Byte Select	Enables 8-bit granularity writes/reads; supports multiplexed 16-bit bus interfaces
SEML / SEMR	Semaphore Enable	Activates semaphore flag access (A0–A2 addressed) instead of RAM array
BUSYL / BUSYR	Busy Flag (Master output / Slave input)	Indicates port contention; M/S = H configures BUSY as output, M/S = L as input
INTL / INTR	Interrupt Flag	Push-pull output signals semaphore or arbitration events to host controller
A0L–A11L / A0R–A11R	Address Inputs	12-bit address per port (4K depth); fully independent for concurrent access
I/O0L–I/O15L / I/O0R–I/O15R	Data I/O (16-bit bidirectional)	True dual-port data paths; simultaneous read/write to same location permitted

Key Features

Feature	Design Value
True Dual-Port Architecture	Independent left/right ports allow simultaneous read operations to identical memory locations without conflict
On-Chip Semaphore Logic	Eight hardware semaphore flags (addressed by A0–A2) enable atomic resource locking between processors or cores
Master/Slave Cascading Support	M/S pin configures BUSY as output (Master) or input (Slave), enabling error-free 32-bit+ word expansion without external logic
Full Asynchronous Operation	No clock required; timing governed solely by CE, R/W, OE, and address setup/hold constraints
Battery Backup Data Retention	Retains valid data at V_CC = 2.0 V with ISB3 ≤ 5 µA; eliminates need for external backup circuitry

Applications

Digital Signal Processor Memory	Video Frame Buffer
Use Scenario: Real-time audio/video processing where DSP core and DMA engine concurrently access shared coefficient or pixel data. IC Role / Device Role / Timing Role: Dual-port SRAM serves as zero-wait-state shared memory buffer with deterministic arbitration via BUSY and semaphore flags. Use Value: Eliminates pipeline stalls during simultaneous read/write; 55 ns access ensures sub-microsecond latency for 16-bit parallel data transfers.	Use Scenario: Interlaced video capture system requiring separate read (display engine) and write (sensor interface) paths to frame memory. IC Role / Device Role / Timing Role: Acts as non-blocking frame buffer with independent left/right ports mapped to sensor and display controllers. Use Value: Enables seamless field-to-field transfer without frame tearing; byte-select enables partial-line updates without full-frame overhead.
Industrial PLC Communication Module	Military Avionics Data Logger
Use Scenario: Programmable logic controller with dual-CPU architecture (control + comms) sharing configuration and status tables. IC Role / Device Role / Timing Role: Provides coherent shared memory with hardware semaphore for inter-processor synchronization and mutual exclusion. Use Value: Guarantees atomic flag updates and prevents race conditions; 5V TTL compatibility simplifies integration with legacy RS-485 and CAN interface ICs.	Use Scenario: Flight data recorder capturing sensor telemetry and pilot inputs under extreme thermal cycling (-40°C to +85°C). IC Role / Device Role / Timing Role: Stores mission-critical data with battery-backed retention during main power loss or brownout events. Use Value: Maintains integrity of last 64 Kbit of flight data at 2V supply; industrial-grade temp rating ensures reliability across operational envelope.

Digital Signal Processor Memory

Video Frame Buffer

Use Scenario: Real-time audio/video processing where DSP core and DMA engine concurrently access shared coefficient or pixel data.

IC Role / Device Role / Timing Role: Dual-port SRAM serves as zero-wait-state shared memory buffer with deterministic arbitration via BUSY and semaphore flags.

Use Value: Eliminates pipeline stalls during simultaneous read/write; 55 ns access ensures sub-microsecond latency for 16-bit parallel data transfers.

Use Scenario: Interlaced video capture system requiring separate read (display engine) and write (sensor interface) paths to frame memory.

IC Role / Device Role / Timing Role: Acts as non-blocking frame buffer with independent left/right ports mapped to sensor and display controllers.

Use Value: Enables seamless field-to-field transfer without frame tearing; byte-select enables partial-line updates without full-frame overhead.

Industrial PLC Communication Module

Military Avionics Data Logger

Use Scenario: Programmable logic controller with dual-CPU architecture (control + comms) sharing configuration and status tables.

IC Role / Device Role / Timing Role: Provides coherent shared memory with hardware semaphore for inter-processor synchronization and mutual exclusion.

Use Value: Guarantees atomic flag updates and prevents race conditions; 5V TTL compatibility simplifies integration with legacy RS-485 and CAN interface ICs.

Use Scenario: Flight data recorder capturing sensor telemetry and pilot inputs under extreme thermal cycling (-40°C to +85°C).

IC Role / Device Role / Timing Role: Stores mission-critical data with battery-backed retention during main power loss or brownout events.

Use Value: Maintains integrity of last 64 Kbit of flight data at 2V supply; industrial-grade temp rating ensures reliability across operational envelope.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY7C024AV-55AXC	55 ns access, 4K × 16, 3.3V core (5V tolerant I/O), 100-pin TQFP only	Requires level translation in pure 5V systems; lacks native 2V data retention	Select if migrating to lower-voltage design with mixed-signal I/O tolerance
IDT70V24S55PF	Same pinout and function but 3.3V supply; 55 ns, commercial grade, PLCC-84	Not 5V compatible; incompatible with legacy 5V bus systems without translators	Choose only when redesigning for 3.3V infrastructure and verifying voltage margin on all control lines

Compared with CY7C024AV-55AXC and IDT70V24S55PF, the 7024S55PF/C uniquely delivers native 5V operation, 2V battery retention, and PLCC-84 packaging - making it irreplaceable in cost-sensitive, thermally stable, legacy 5V embedded systems requiring guaranteed data persistence during power interruption.

Availability

7024S55PF/C is available at Aetrix Electronics and suitable for digital signal processor memory, video frame buffering, and industrial PLC communication modules requiring stable component supply across extended production lifecycles.

Supply support for 7024S55PF/C 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

IDT (Integrated Device Technology) is a fabless semiconductor company specializing in timing, memory interface, and RF solutions, now part of Renesas Electronics since 2019.

The IDT7024 family was designed specifically for high-reliability, real-time dual-ported memory applications in telecommunications, military avionics, and industrial automation where deterministic arbitration and battery-backed retention are mandatory.

FAQ

What is the maximum operating speed of the 7024S55PF/C?

The 7024S55PF/C has a maximum read cycle time (tRC) of 55 ns and address access time (tAA) of 55 ns, supporting sustained dual-port operation up to approximately 18.2 MHz per port under commercial temperature conditions (0°C to +70°C). This speed is guaranteed across all 4K × 16 memory locations with TTL-level inputs and 5V ±10% supply.

Does the 7024S55PF/C support battery backup operation?

Yes, the 7024S55PF/C supports battery backup data retention at V_CC = 2.0 V minimum, with full standby current (ISB3) specified at ≤ 5 µA. This allows the device to retain valid memory contents during main power loss without external circuitry - a key feature confirmed in datasheet Table 10 and Figure 5.

How does the Master/Slave (M/S) pin configure BUSY behavior on the 7024S55PF/C?

When M/S = H (high), BUSYL and BUSYR function as push-pull outputs indicating port contention; when M/S = L (low), they become inputs accepting BUSY signals from a Master device. This configuration enables scalable multi-device cascading for 32-bit+ word systems, as documented in the Functional Block Diagram and Truth Table I.

What package type is used for the 7024S55PF/C?

The 7024S55PF/C uses an 84-pin Plastic Leaded Chip Carrier (PLCC) package with 1.15" × 1.15" body size and standard JEDEC MO-047 footprint. Pin layout matches the PLG84 diagram in the datasheet (drawing 2740 drw 02F), including dedicated V_CC, GND, and N/C positions.

Can the 7024S55PF/C perform simultaneous reads from both ports to the same memory address?

Yes, the 7024S55PF/C implements true dual-port memory cells that permit simultaneous reads from identical addresses on the left and right ports without conflict or timing penalty - a defining characteristic confirmed in the Features section and Functional Block Diagram of the official datasheet.

7024S55PF/C Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 100-LQFP

Packaging:: Tray

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Volatile

Memory Format:: SRAM

Technology:: SRAM - Dual Port, Asynchronous

Memory Size:: 64Kbit

Memory Organization:: 4K x 16

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 55ns

Access Time:: 55 ns

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

7024S55PF/C FAQ

1.How can I place an order for 7024S55PF/C through Aetrix?

Please submit a Request for Quotation (RFQ) for 7024S55PF/C 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 7024S55PF/C reliable?

The price and inventory of 7024S55PF/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7024S55PF/C is usually 5 days.

3.What payment methods are accepted for 7024S55PF/C?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7024S55PF/C transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 7024S55PF/C?

7024S55PF/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 7024S55PF/C 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 7024S55PF/C?

For technical support, including 7024S55PF/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7024S55PF/C requirements.

6.How does Aetrix verify that 7024S55PF/C is sourced from the original manufacturer or authorized distributors?

All 7024S55PF/C 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 7024S55PF/C meets industry standards.

7.What is the process for return or replacement of 7024S55PF/C?

All 7024S55PF/C units undergo pre-shipment inspection (PSI). If there is an issue with 7024S55PF/C, 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 7024S55PF/C part is unused and in its original packaging.

Return procedure for 7024S55PF/C:

1.Submit a request within 90 days.

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

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