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Renesas 7024S25PFI
- Part No.:
- 7024S25PFI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7024S25PFI.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,439
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Product details
Overview
7024S25PFI from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 25 ns maximum read cycle time (tRC), TTL-compatible 5V ±10% operation, and on-chip semaphore arbitration logic - enabling simultaneous asynchronous access in real-time inter-processor communication systems.
For engineers reviewing the 7024S25PFI datasheet, 7024S25PFI pinout, 7024S25PFI application, or 7024S25PFI equivalent, this page delivers verified timing specs, industrial-grade temperature support (–40°C to +85°C), battery-backed data retention at 2V, and precise Master/Slave BUSY flag behavior for multi-device cascading in embedded control and military avionics memory subsystems.
Technical Context
The 7024S25PFI implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port, allowing concurrent read/write operations-even to the same memory location-without external arbitration logic. Its internal arbitration resolves port contention via hardware semaphore flags (A0–A2 addressed) and BUSY signaling.
When configured as Master (M/S = H), it asserts BUSYL/BUSYR outputs; as Slave (M/S = L), it accepts BUSY inputs to stall writes during conflict. The device supports byte-selectable upper/lower I/O control (UBL/LBL, UBR/LBR) and operates with full TTL-level compatibility across all control pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4,096 × 16-bit (64 Kbit), true dual-port SRAM with independent left/right access paths |
| Max Read Cycle Time (tRC) | 25 ns - guarantees full-speed 40 MHz operation in commercial/industrial systems |
| Supply Voltage | 5.0 V ±10% - single TTL-compatible rail; no auxiliary supplies required |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Data Retention Voltage | 2.0 V minimum - enables low-power battery backup with ≤4 mA standby current (L version) |
| Active Power (Typ.) | 750 mW - CMOS-based efficiency suitable for thermally constrained embedded designs |
| Standby Current (ISB3) | 0.2 mA (typ.) - ultra-low full-standby mode with CMOS-level inputs disables all circuitry |
Pinout & Package
7024S25PFI is packaged in a 84-pin PLCC (Plastic Leaded Chip Carrier) with 0.050″ lead pitch and 1.15″ × 1.15″ body size. Pin 1 is marked by a corner notch; power (VCC) and ground (GND) are distributed across multiple pins for low-noise operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left Port Address Inputs | 12-bit address bus for left-side memory access; fully asynchronous with right port |
| A0R–A11R | Right Port Address Inputs | Independent 12-bit address bus; enables true concurrent addressing without bus contention |
| I/O0L–I/O15L | Left Port Bidirectional Data | 16-bit data path with separate upper-byte (I/O8L–I/O15L) and lower-byte (I/O0L–I/O7L) control |
| I/O0R–I/O15R | Right Port Bidirectional Data | Full 16-bit parallel interface; supports multiplexed bus compatibility via UBR/LBR |
| CEL / CER | Chip Enable (Left/Right) | Independent chip select per port; enables selective port activation and power-down control |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low write enable; determines direction of data flow per port independently |
| OEL / OER | Output Enable (Left/Right) | Tri-state control for output drivers; allows shared bus usage without external buffers |
| UBL / UBR | Upper-Byte Select | Enables write/read to I/O8–I/O15 only; essential for 8-bit bus interfacing |
| LBL / LBR | Lower-Byte Select | Enables write/read to I/O0–I/O7 only; supports byte-wide peripheral interfacing |
| SEML / SEMR | Semaphore Enable | Activates 3-bit semaphore register (A0–A2) for inter-port synchronization and resource locking |
| INTL / INTR | Interrupt Flag Output | Open-drain push-pull interrupt signal asserted when semaphore or BUSY state changes |
| BUSYL / BUSYR | Busy Flag (Master Output / Slave Input) | When M/S = H: BUSY outputs indicate port contention; when M/S = L: BUSY input halts writes |
| M/S | Master/Slave Select | Configures device role in cascaded systems; determines BUSY pin direction and arbitration priority |
| VCC / GND | Power Supply | Multiple VCC/GND pins reduce impedance and improve noise immunity in high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Memory Cells | Enables simultaneous reads/writes to identical addresses - eliminates need for shadow RAM or software arbitration |
| On-Chip Semaphore Logic | Eight hardware semaphore flags (addressed by A0–A2) provide atomic lock/unlock for shared resources between processors |
| Automatic Power-Down | Chip enable (CE) control reduces active current to ≤0.2 mA in full-standby mode - critical for battery-backed systems |
| Full Asynchronous Operation | No clock required; each port operates independently with its own timing - simplifies timing closure in mixed-speed systems |
| Master/Slave Cascading Support | Hardware BUSY flag propagation enables error-free expansion to 32-bit+ word widths without external glue logic |
Applications
| Industrial PLC Communication Module | Military Avionics Display Buffer |
|---|---|
|
Use Scenario: Real-time data exchange between CPU and I/O processor in programmable logic controllers. IC Role / Device Role / Timing Role: Dual-port RAM acts as shared memory buffer with hardware semaphore for deterministic resource access. Use Value: Eliminates polling delays and software locks; 25 ns tRC ensures sub-40 ns inter-processor response in motion control loops. |
Use Scenario: Frame buffering between graphics controller and display driver in ruggedized cockpit displays. IC Role / Device Role / Timing Role: Left port receives pixel data from GPU; right port streams to display engine - fully asynchronous. Use Value: Concurrent access prevents frame tearing; industrial temp rating (–40°C to +85°C) ensures reliability across flight envelope. |
| Telecom Baseband Processor Interface | Medical Imaging Data Pipeline |
|
Use Scenario: Interfacing DSP and ARM cores in wireless baseband processing units requiring low-latency memory sharing. IC Role / Device Role / Timing Role: Acts as coherency buffer with BUSY-driven arbitration during burst transfers between heterogeneous processors. Use Value: Hardware arbitration avoids cache coherency overhead; 2V data retention supports graceful shutdown during power loss. |
Use Scenario: High-throughput transfer of CT/MRI scan data between acquisition FPGA and reconstruction processor. IC Role / Device Role / Timing Role: Dual-port SRAM serves as ping-pong buffer - one port captures raw sensor data while other feeds reconstruction engine. Use Value: 16-bit width and 25 ns access sustain >40 MB/s sustained bandwidth; PLCC package supports rework in Class II medical assemblies. |
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-25AXC | 25 ns tRC, 4K × 16, but uses 100-pin TQFP; higher ICC (220 mA typ.) and no 2V data retention | Requires PCB redesign due to different footprint and thermal profile; lacks battery backup capability | Select when board space permits larger package and higher drive strength is needed for long traces |
| AS7C34096A-25JCIN | 25 ns tRC, 4K × 16, 84-pin PLCC, but only commercial temp (0°C to +70°C); no semaphore or BUSY logic | Cannot replace 7024S25PFI in Master/Slave cascades or semaphore-dependent firmware without redesign | Choose only for cost-sensitive non-industrial applications where arbitration is handled in software |
Compared with CY7C024AV-25AXC and AS7C34096A-25JCIN, the 7024S25PFI uniquely integrates hardware semaphore arbitration, industrial temperature support, and 2V data retention in an 84-pin PLCC - making it irreplaceable in safety-critical, battery-backed, or multi-processor deterministic systems.
Availability
7024S25PFI is available at Aetrix Electronics and suitable for industrial PLC communication modules, military avionics display buffers, and telecom baseband processor interfaces requiring stable component supply across extended lifecycle programs.
Supply support for 7024S25PFI 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 high-performance timing, memory, and interface solutions, now part of Renesas Electronics.
The 7024S25PFI belongs to IDT's legacy dual-port SRAM product line, engineered specifically for deterministic inter-processor communication in real-time embedded systems demanding hardware arbitration and industrial reliability.
FAQ
What is the operating temperature range of the 7024S25PFI?
The 7024S25PFI is rated for industrial temperature operation from –40°C to +85°C. This specification is validated per IDT's qualification standards and applies to all DC and AC parameters listed in the official datasheet. The 7024S25PFI maintains full 25 ns read cycle performance across this range without derating.
Does the 7024S25PFI support battery backup operation?
Yes, the 7024S25PFI supports battery backup operation with data retention down to 2.0 V (VDR). In this mode, it draws ≤4000 µA (typ. 100 µA) while preserving memory contents - a key feature of the "L" variant embedded in the 7024S25PFI designation per IDT's ordering nomenclature.
How does the Master/Slave (M/S) pin affect BUSY signal behavior on the 7024S25PFI?
When M/S = H, the 7024S25PFI operates as Master and drives BUSYL/BUSYR outputs to signal port contention. When M/S = L, it operates as Slave and accepts BUSY as an input to inhibit writes - enabling hardware-synchronized cascading without external logic. This behavior is intrinsic to the 7024S25PFI's arbitration architecture.
Can the 7024S25PFI perform simultaneous reads from both ports to the same memory address?
Yes, the 7024S25PFI uses true dual-port memory cells that allow concurrent reads from both left and right ports to identical addresses without conflict or timing penalty. This capability is fundamental to its design and is explicitly guaranteed in the functional description and truth tables of the 7024S25PFI datasheet.
What package type is used for the 7024S25PFI?
The 7024S25PFI is supplied in an 84-pin Plastic Leaded Chip Carrier (PLCC) package, designated PLG84 in IDT documentation. It features a 1.15″ × 1.15″ body, J-lead geometry, and is RoHS-compliant with green material options available per ordering code suffixes.
7024S25PFI 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:
- 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:
- 100-TQFP (14x14)
7024S25PFI FAQ
1.How can I place an order for 7024S25PFI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7024S25PFI 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 7024S25PFI reliable?
The price and inventory of 7024S25PFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7024S25PFI is usually 5 days.
3.What payment methods are accepted for 7024S25PFI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7024S25PFI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7024S25PFI?
7024S25PFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7024S25PFI 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 7024S25PFI?
For technical support, including 7024S25PFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7024S25PFI requirements.
6.How does Aetrix verify that 7024S25PFI is sourced from the original manufacturer or authorized distributors?
All 7024S25PFI 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 7024S25PFI meets industry standards.
7.What is the process for return or replacement of 7024S25PFI?
All 7024S25PFI units undergo pre-shipment inspection (PSI). If there is an issue with 7024S25PFI, 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 7024S25PFI part is unused and in its original packaging.
Return procedure for 7024S25PFI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7024S25PFI Tags
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AT24C02C-XHM-T
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