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Renesas 7024L55PFG/S2899
- Part No.:
- 7024L55PFG/S2899
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7024L55PFG/S2899.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,516
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Product details
Overview
7024L55PFG/S2899 from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 55 ns max read cycle time, TTL-compatible 5V ±10% supply, and 2V data retention for battery backup operation. It supports simultaneous asynchronous access, on-chip semaphore signaling, and master/slave cascading for 32-bit+ bus expansion in real-time interprocessor communication systems.
For engineers reviewing the 7024L55PFG/S2899 datasheet, 7024L55PFG/S2899 pinout, 7024L55PFG/S2899 application, or 7024L55PFG/S2899 equivalent, key selection criteria include dual-port arbitration latency, BUSY flag timing (tBDD ≤ 30 ns), standby current (ISB3 = 0.2 mA typ.), and 100-pin TQFP package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The 7024L55PFG/S2899 implements full hardware port arbitration with dedicated BUSY output (master) or input (slave), enabling deterministic conflict resolution during concurrent access to the same memory location. Its semaphore logic uses A0–A2 addressing to manage eight shared flags across both ports without external logic.
It operates fully asynchronously per port, with separate CE, R/W, OE, UB/LB, and SEM controls for each side. The device supports two distinct operational modes: RAM access (SEM = VIH) and semaphore register access (SEM = VIL), with dedicated timing parameters (e.g., tSAA, tSWRD) validated for both.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 16 (64 Kbit), true dual-ported cells enabling simultaneous reads of identical addresses |
| Max Read Cycle Time | 55 ns - defines minimum clock period for sustained random-access throughput in real-time systems |
| Supply Voltage | 5.0 V ±10% - compatible with legacy TTL logic families without level-shifting |
| Data Retention Voltage | 2.0 V - enables low-power battery backup with guaranteed data hold during main power loss |
| Standby Current (ISB3) | 0.2 mA typical - ultra-low power consumption when both ports fully disabled via CMOS-level inputs |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation and transportation control |
| Package | 100-pin Thin Quad Flatpack (TQFP), 14 mm × 14 mm - surface-mount compatible with automated PCB assembly |
Pinout & Package
7024L55PFG/S2899 is housed in a 100-pin TQFP (PNG100) package with 0.5 mm pitch, 14 mm × 14 mm body, and 1.4 mm height. Pin assignments follow standard dual-port RAM layout with mirrored left/right I/O, address, and control groups, plus dedicated arbitration signals (BUSY, INT, SEM, M/S).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L / A0R–A11R | Address Inputs (Left/Right) | 12-bit address buses for independent memory addressing per port |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data (Left/Right) | 16-bit parallel data paths supporting byte-selectable writes via UBL/LBL and UBR/LBR |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables for port-specific power gating and arbitration isolation |
| R/WL / R/WR | Read/Write Control (Left/Right) | Determines data direction per port; required to be VIH during address transitions |
| OEL / OER | Output Enable (Left/Right) | Tri-states outputs independently; used with UB/LB for byte-granular read control |
| UBL / UBR | Upper-Byte Select (Left/Right) | Enables I/O8–I/O15 during read/write; supports multiplexed bus compatibility |
| LBL / LBR | Lower-Byte Select (Left/Right) | Enables I/O0–I/O7 during read/write; allows 8-bit subsystem interfacing |
| SEML / SEMR | Semaphore Enable (Left/Right) | Activates semaphore register access mode (SEM = VIL) for inter-processor synchronization |
| INTL / INTR | Interrupt Flag Output (Left/Right) | Open-drain or push-pull (per note) interrupt signal indicating semaphore state change or error |
| BUSYL / BUSYR | Busy Flag (Left/Right) | Master: output indicating port contention; Slave: input used to stall write operations |
| M/S | Master/Slave Select | Configures device role: HIGH = BUSY output (master); LOW = BUSY input (slave) |
| VCC / GND | Power / Ground | Multiple VCC/GND pins distributed for low-noise operation and reduced ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| On-chip port arbitration logic | Eliminates need for external glue logic in multi-CPU systems by resolving simultaneous access conflicts in hardware |
| Full semaphore signaling support | Eight hardware semaphore flags accessible via A0–A2, enabling atomic resource locking between processors |
| Separate upper/lower byte control | Allows independent 8-bit writes to either byte lane, essential for mixed-width bus architectures and legacy peripheral interfacing |
| Automatic power-down mode | Reduces active current to 0.2 mA typical when both chip enables are deasserted, extending battery life in backup mode |
| TTL-compatible interface | Operates directly with 5V TTL logic families without level shifters, simplifying integration into existing industrial control boards |
Applications
| Industrial PLC Memory Buffer | Avionics Flight Control Interface |
|---|---|
Use Scenario: Dual-CPU programmable logic controller where one CPU handles I/O scanning and the other executes ladder logic. IC Role / Device Role / Timing Role: Shared memory buffer enabling deterministic data exchange between CPUs with hardware-enforced mutual exclusion. Use Value: Eliminates software polling delays; BUSY flag timing (tBDD ≤ 30 ns) ensures sub-60 ns worst-case arbitration latency. | Use Scenario: Redundant flight management system requiring synchronized access to navigation parameter tables. IC Role / Device Role / Timing Role: Dual-port RAM acting as fault-tolerant shared memory with semaphore-based critical section protection. Use Value: 2V data retention preserves configuration during brownout; industrial temp rating ensures reliability at altitude. |
| Medical Imaging Data Pipeline | Test Equipment Pattern Generator |
Use Scenario: Real-time MRI image acquisition system where FPGA acquires raw sensor data and DSP processes frames. IC Role / Device Role / Timing Role: High-bandwidth memory bridge allowing concurrent write (FPGA) and read (DSP) at 18.2 MB/s (55 ns cycle). Use Value: True dual-port architecture avoids FIFO bottlenecks; 55 ns access enables >17 MHz sustained throughput per port. | Use Scenario: Automated test equipment generating stimulus patterns while simultaneously capturing response waveforms. IC Role / Device Role / Timing Role: Synchronization memory enabling pattern generator and capture engine to share waveform definitions and results. Use Value: Master/slave cascading supports 32-bit word expansion; 100-pin TQFP fits dense test board layouts. |
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 with 5V tolerant I/O; lower active power (120 mW typ.) | Requires level translation for pure 5V systems; optimized for mixed-voltage embedded designs | Select when migrating to lower-voltage infrastructure or when power budget is constrained below 150 mW |
| AS7C34098B-55PCN | 55 ns access, 4K × 16, 3.3V supply only; no 2V data retention or BUSY arbitration logic | Lacks hardware semaphore and master/slave mode; requires external arbitration for multi-processor use | Select for cost-sensitive 3.3V-only applications where interprocessor coordination is handled in software |
Compared with CY7C024AV-55AXC and AS7C34098B-55PCN, the 7024L55PFG/S2899 uniquely delivers 5V-native operation with integrated BUSY arbitration and 2V battery backup-critical for industrial control and avionics where voltage stability and deterministic latency are non-negotiable.
Availability
7024L55PFG/S2899 is available at Aetrix Electronics and suitable for industrial PLC memory buffers, avionics flight control interfaces, and medical imaging data pipelines requiring stable component supply across extended product lifecycles.
Supply support for 7024L55PFG/S2899 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, RF, and sensor solutions, now part of Renesas Electronics.
The IDT7024 family was engineered for real-time interprocessor communication in harsh environments, delivering deterministic dual-port access with hardware arbitration and battery-backed data retention for mission-critical industrial and defense systems.
FAQ
What is the maximum operating frequency supported by the 7024L55PFG/S2899?
The 7024L55PFG/S2899 has a maximum read cycle time of 55 ns, corresponding to a theoretical maximum sustained access rate of approximately 18.2 MHz per port. This is not a clock frequency but the minimum interval between consecutive read operations under worst-case timing conditions defined in the AC specifications.
Does the 7024L55PFG/S2899 support true simultaneous read operations from both ports to the same memory address?
Yes, the 7024L55PFG/S2899 uses true dual-ported memory cells that allow concurrent reads from identical addresses on the left and right ports without contention or delay. This capability is fundamental to its architecture and explicitly confirmed in the functional description and block diagram.
How does the BUSY signal function in master versus slave configuration for the 7024L55PFG/S2899?
In master mode (M/S = HIGH), BUSY is an output that asserts when the opposite port attempts access to an occupied address. In slave mode (M/S = LOW), BUSY is an input used to stall local write operations until the master releases the resource. Both behaviors are implemented in hardware and require no firmware intervention.
What is the significance of the "L" suffix in the 7024L55PFG/S2899 part number?
The "L" denotes the low-power variant of the IDT7024 family. It reduces standby current to 0.2 mA typical (ISB3) and enables 2V data retention for battery backup operation-key differentiators from the standard "S" version, which consumes 5 mW typical in standby and lacks guaranteed 2V retention.
Can the 7024L55PFG/S2899 be used in military temperature applications?
No, the 7024L55PFG/S2899 is rated for industrial temperature range (–40°C to +85°C) only. While the broader IDT7024 family includes military-grade versions (e.g., 7024L55PGI), this specific part number carries the "PFG" suffix indicating industrial qualification and is not screened or tested to MIL-PRF-38535 requirements.
7024L55PFG/S2899 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- 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)
7024L55PFG/S2899 FAQ
1.How can I place an order for 7024L55PFG/S2899 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7024L55PFG/S2899 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 7024L55PFG/S2899 reliable?
The price and inventory of 7024L55PFG/S2899 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7024L55PFG/S2899 is usually 5 days.
3.What payment methods are accepted for 7024L55PFG/S2899?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7024L55PFG/S2899 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7024L55PFG/S2899?
7024L55PFG/S2899 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7024L55PFG/S2899 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 7024L55PFG/S2899?
For technical support, including 7024L55PFG/S2899 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7024L55PFG/S2899 requirements.
6.How does Aetrix verify that 7024L55PFG/S2899 is sourced from the original manufacturer or authorized distributors?
All 7024L55PFG/S2899 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 7024L55PFG/S2899 meets industry standards.
7.What is the process for return or replacement of 7024L55PFG/S2899?
All 7024L55PFG/S2899 units undergo pre-shipment inspection (PSI). If there is an issue with 7024L55PFG/S2899, 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 7024L55PFG/S2899 part is unused and in its original packaging.
Return procedure for 7024L55PFG/S2899:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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