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Renesas 7024S20PFI8
- Part No.:
- 7024S20PFI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7024S20PFI8.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,690
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Product details
Overview
7024S20PFI8 from IDT is a high-speed 4K × 16 true dual-port static RAM with independent asynchronous left/right ports, 20 ns max access time (industrial grade), TTL-compatible 5V ±10% supply, and on-chip semaphore/arbiration logic-designed for real-time inter-processor communication in military-grade embedded systems requiring deterministic memory coherency.
For engineers reviewing the 7024S20PFI8 datasheet, 7024S20PFI8 pinout, 7024S20PFI8 application, or 7024S20PFI8 equivalent, key selection criteria include dual-port arbitration timing (tAPS = 5 ns), BUSY flag behavior under M/S = VIH, battery-backed data retention at 2V (L-version only), and compatibility with 84-pin PLCC packaging for legacy avionics backplanes.
Technical Context
The 7024S20PFI8 implements full hardware port arbitration using dedicated BUSY, INT, and SEM signals, enabling conflict-free simultaneous read/write operations across ports without external logic. Its dual independent control paths support master/slave cascading for 32-bit+ bus expansion via M/S pin configuration.
It features separate upper-byte (UBR/UBL) and lower-byte (LBR/LBL) enables for multiplexed bus interfacing, and supports two distinct operational modes: standard RAM access (SEM = VIH) and semaphore register access (SEM = VIL), with dedicated timing parameters (tSAA, tSWRD, tSPS) validated for contention resolution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4,096 × 16-bit (64 Kbit), true dual-port SRAM with independent address/data/control per port |
| Access Time (max) | 20 ns - guarantees deterministic latency for real-time interrupt handlers and DSP co-processors |
| Supply Voltage | 5.0 V ±10% - compatible with legacy TTL logic families without level-shifting |
| Operating Temperature | –40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
| Standby Current (ISB3) | 0.2 mA typ. - enables ultra-low-power sleep mode when both ports are fully disabled |
| Arbitration Priority Setup | tAPS = 5 ns - ensures reliable winner-determination during simultaneous port contention |
| Data Retention | 2 V minimum - supported only in L-version; S-version (7024S) does not retain data below 4.5 V |
Pinout & Package
7024S20PFI8 is packaged in an 84-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 1.15 in × 1.15 in × 0.17 in, with 4 ground pins (pins 2, 13, 45, 72), 4 VCC pins (pins 1, 25, 46, 73), and dual-port I/O banks (I/O0L–I/O15L and I/O0R–I/O15R) arranged for symmetrical PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low enable per port; controls power-up/down of respective port's internal circuitry |
| R/WL / R/WR | Read/Write Control (Left / Right) | Determines direction of data transfer on associated port; asserts write when low |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select | Enables byte-granular writes to 16-bit data bus-critical for mixed-endian or partial-word updates |
| SEML / SEMR | Semaphore Enable | Switches port between RAM array access (VIH) and 8-flag semaphore register access (VIL) |
| BUSYL / BUSYR | Busy Flag (Master Output / Slave Input) | When M/S = H: BUSYR outputs contention status; when M/S = L: BUSYL accepts BUSYR as input |
| INTL / INTR | Interrupt Flag | Open-collector push-pull output signaling semaphore acquisition or write completion event |
| M/S | Master/Slave Select | Configures device role in cascaded systems: H = Master (BUSY output), L = Slave (BUSY input) |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Simultaneous independent reads/writes to same memory location-enables lock-free inter-processor messaging |
| On-Chip Semaphore Logic | Eight dedicated hardware flags (A0–A2 addressed) with atomic acquire/release-eliminates need for software mutexes |
| Full Hardware Arbitration | Automatic BUSY assertion and priority resolution (tAPS = 5 ns) prevents data corruption during port contention |
| Byte-Controlled Write Enable | Separate UBL/LBL and UBR/LBR allows 8-bit sub-word writes without read-modify-write cycles |
| Asynchronous Dual-Port Operation | No shared clock required-ports operate independently with no synchronization overhead or skew constraints |
Applications
| Avionics Flight Control System | Industrial PLC Redundancy Module |
|---|---|
|
Use Scenario: Real-time exchange of sensor fusion data and actuator commands between primary and backup flight computers. IC Role / Device Role / Timing Role: Dual-port RAM acts as coherent shared memory buffer with hardware-enforced arbitration to prevent race conditions during failover. Use Value: 20 ns access time and tAPS = 5 ns guarantee sub-microsecond response to critical control interrupts without software intervention. |
Use Scenario: Synchronized state mirroring between active and standby PLC CPUs in safety-critical manufacturing lines. IC Role / Device Role / Timing Role: Acts as deterministic interlock memory with semaphore flags ensuring exclusive access during hot-switchover sequences. Use Value: On-chip BUSY/INT signaling eliminates external arbitration logic, reducing BOM count and board area by >3 components per channel. |
| Military Radar Signal Processor | Medical Imaging Data Pipeline |
|
Use Scenario: High-throughput buffering of digitized RF samples between ADC front-end and FPGA-based beamformer. IC Role / Device Role / Timing Role: Provides zero-wait-state memory interface for parallel data ingestion and processing streams. Use Value: Independent left/right ports allow concurrent DMA fetch (right) and FFT computation store (left) at full 50 MHz sustained bandwidth. |
Use Scenario: Real-time DICOM frame staging between CT scanner detector array and reconstruction engine. IC Role / Device Role / Timing Role: Serves as dual-access frame buffer enabling pipelined acquisition and post-processing without memory contention stalls. Use Value: 84-pin PLCC package ensures mechanical robustness and thermal stability in long-duration medical equipment deployments. |
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-20AXC | 20 ns access, 4K × 16, but uses 100-pin TQFP; no M/S pin-requires external arbitration logic for cascading | Lacks integrated master/slave BUSY protocol; suitable only for single-device configurations | Select when footprint flexibility and higher pin-count routing are acceptable, and cascading is unnecessary |
| AS7C34096A-20TIN | 20 ns access, 4K × 16, 84-pin PLCC, but no semaphore or BUSY logic-pure dual-port with no arbitration | Requires external semaphores and arbitration ICs for multi-processor use cases | Select only for cost-sensitive designs where all arbitration is handled in FPGA or software |
Compared with CY7C024AV-20AXC and AS7C34096A-20TIN, the 7024S20PFI8 uniquely integrates master/slave arbitration, semaphore registers, and BUSY signaling in a drop-in PLCC package-reducing system-level complexity and validation effort for safety-critical dual-CPU architectures.
Availability
7024S20PFI8 is available at Aetrix Electronics and suitable for avionics flight control systems, industrial PLC redundancy modules, and military radar signal processors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 7024S20PFI8 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 for communications, computing, and industrial markets.
The 7024S series was designed specifically for deterministic, low-latency inter-processor communication in harsh-environment embedded systems-prioritizing hardware arbitration, industrial temperature operation, and legacy-compatible packaging.
FAQ
What is the maximum operating temperature range for the 7024S20PFI8?
The 7024S20PFI8 is rated for industrial temperature operation from –40°C to +85°C, as confirmed in the Absolute Maximum Ratings table and DC Electrical Characteristics section. It does not support military-grade (–55°C to +125°C) or commercial-grade (0°C to +70°C) variants-this specific part number is exclusively industrial.
Does the 7024S20PFI8 support battery backup data retention?
No, the 7024S20PFI8 does not support battery backup data retention. Only the 'L' version (e.g., 7024L20PFI8) provides 2V data retention capability. The 'S' suffix denotes standard power consumption (750 mW active, 5 mW standby), and its data retention specification is undefined below 4.5 V.
How does the M/S pin configure master versus slave operation in the 7024S20PFI8?
When M/S = H (high), the 7024S20PFI8 operates as Master: BUSYR becomes an output flag indicating port contention, and INTL/INTR reflect local events. When M/S = L (low), it operates as Slave: BUSYL accepts BUSYR from the Master as an input, halting writes until BUSY deasserts-enabling synchronized cascaded memory expansion.
Can the 7024S20PFI8 perform simultaneous reads from both ports to the same memory address?
Yes, the 7024S20PFI8 uses true dual-ported memory cells that permit simultaneous reads from both left and right ports to identical addresses without contention, arbitration, or timing penalty-verified in the Functional Block Diagram and Features section.
What package type is used for the 7024S20PFI8, and how many pins does it have?
The 7024S20PFI8 uses an 84-pin Plastic Leaded Chip Carrier (PLCC) package, as explicitly stated in the Pin Configurations section and confirmed by the "PLG84" designation in the package diagrams. It is not available in PGA, Flatpack, or TQFP variants under this specific part number.
7024S20PFI8 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:
- 64Kbit
- Memory Organization:
- 4K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 20ns
- Access Time:
- 20 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)
7024S20PFI8 FAQ
1.How can I place an order for 7024S20PFI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7024S20PFI8 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 7024S20PFI8 reliable?
The price and inventory of 7024S20PFI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7024S20PFI8 is usually 5 days.
3.What payment methods are accepted for 7024S20PFI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7024S20PFI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7024S20PFI8?
7024S20PFI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7024S20PFI8 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 7024S20PFI8?
For technical support, including 7024S20PFI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7024S20PFI8 requirements.
6.How does Aetrix verify that 7024S20PFI8 is sourced from the original manufacturer or authorized distributors?
All 7024S20PFI8 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 7024S20PFI8 meets industry standards.
7.What is the process for return or replacement of 7024S20PFI8?
All 7024S20PFI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7024S20PFI8, 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 7024S20PFI8 part is unused and in its original packaging.
Return procedure for 7024S20PFI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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