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Renesas 7024S55PF8
- Part No.:
- 7024S55PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7024S55PF8.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,705
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Product details
Overview
7024S55PF8 from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 55 ns maximum read cycle time, TTL-compatible 5V ±10% supply, and industrial temperature range (–40°C to +85°C). It supports simultaneous asynchronous access, on-chip semaphore arbitration, and battery-backed data retention down to 2V - enabling use in real-time embedded systems requiring concurrent CPU/DSP memory access.
For engineers reviewing the 7024S55PF8 datasheet, 7024S55PF8 pinout, 7024S55PF8 application, or 7024S55PF8 equivalent, key selection considerations include dual-port contention handling via BUSY/SEM logic, byte-selectable I/O (UBL/LBL), master/slave cascading for 32-bit+ bus expansion, and low-power standby modes (1 mW typ. for L-version).
Technical Context
The 7024S55PF8 implements fully asynchronous dual-port operation with separate address, control, and bidirectional I/O buses per port. Its on-chip arbitration logic resolves port conflicts using BUSY flag signaling and hardware semaphore registers addressed via A0–A2, supporting eight independent inter-processor synchronization flags.
It features separate upper-byte (I/O8–I/O15) and lower-byte (I/O0–I/O7) enables (UBL/LBL), allowing multiplexed bus compatibility. The M/S pin configures the device as master (BUSY output) or slave (BUSY input), enabling error-free cascaded operation without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 16 (64 Kbit), true dual-port SRAM with independent left/right access paths |
| Access Time | 55 ns max read cycle time - defines minimum clock period for synchronous interface integration |
| Supply Voltage | 5.0 V ±10% - compatible with legacy TTL logic families without level translation |
| Data Retention | 2 V minimum - enables battery backup operation during main power loss |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and communications equipment |
| Standby Current | 1 mA typical (IDT7024L variant) - reduces system power in idle states without losing memory contents |
| Package | 100-pin Thin Quad Flatpack (TQFP) - surface-mount compatible with automated PCB assembly |
Pinout & Package
7024S55PF8 is housed in a 100-pin TQFP (PNG100) package measuring 14 mm × 14 mm × 1.4 mm, with lead pitch of 0.5 mm and RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left/Right) | Active-low enable per port; controls port activation and power-down entry |
| R/WL / R/WR | Read/Write Control (Left/Right) | Determines direction of data transfer on respective I/O bus |
| OEL / OER | Output Enable (Left/Right) | Tri-states I/O pins independently; critical for bus sharing and contention avoidance |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select | Enables 8-bit granularity writes - essential for mixed-width processor interfacing |
| SEML / SEMR | Semaphore Enable | Activates 3-bit addressable semaphore register access (A0–A2) for inter-processor sync |
| BUSYL / BUSYR | Busy Flag (Master Output / Slave Input) | Indicates port contention; used in master/slave cascading to prevent write collisions |
| M/S | Master/Slave Select | Configures BUSY as output (master) or input (slave); enables seamless 32-bit+ bus expansion |
| A0L–A11L, A0R–A11R | Address Inputs (Left/Right) | 12-bit address per port → 4K depth; supports independent addressing of same memory location |
| I/O0L–I/O15L, I/O0R–I/O15R | Bidirectional Data (Left/Right) | 16-bit parallel data path per port; allows simultaneous read of identical location (true dual-port) |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables simultaneous reads from both ports to the same address - eliminates arbitration delay in real-time monitoring applications |
| On-chip semaphore logic | Eight hardware semaphore flags accessible via A0–A2 - removes need for external locking logic in multi-processor systems |
| Master/slave cascade support | Single M/S pin configures BUSY behavior - allows stacking multiple devices for 32-bit+ word systems without discrete glue logic |
| Full asynchronous operation | No clock required; timing defined by CE/R/W/OE setup/hold - simplifies integration with heterogeneous processors (e.g., DSP + MCU) |
| Battery backup data retention | Operates down to 2 V with ≤4 mA retention current - maintains state during brown-out or controlled shutdown sequences |
Applications
| Industrial PLC Memory Buffer | Digital Signal Processor Co-Processor Interface |
|---|---|
|
Use Scenario: Real-time I/O scanning and program execution in programmable logic controllers where ladder logic engine and communication coprocessor require concurrent memory access. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared scratchpad memory between main CPU and fieldbus controller, synchronized via semaphore flags. Use Value: Eliminates software polling or interrupt-driven handshaking; 55 ns access ensures deterministic response under worst-case scan cycles. |
Use Scenario: High-throughput audio/video processing pipeline where DSP handles algorithmic computation while host MCU manages configuration and metadata. IC Role / Device Role / Timing Role: Serves as zero-wait-state buffer between DSP data memory space and MCU peripheral interface, with BUSY signaling preventing write collisions. Use Value: Enables full utilization of DSP bandwidth without stalling - simultaneous read/write avoids pipeline bubbles in FIR filter or FFT stages. |
| Avionics Flight Control Data Exchange | Telecom Line Card Packet Buffer |
|
Use Scenario: Redundant flight control computers exchanging sensor fusion results and actuator commands in DO-254-certified avionics systems. IC Role / Device Role / Timing Role: Provides fault-tolerant shared memory with hardware-enforced mutual exclusion via semaphores and BUSY arbitration. Use Value: Meets MIL-PRF-38535 QML requirements for reliability; 2V data retention sustains state during transient power faults. |
Use Scenario: Multi-protocol line cards in carrier-grade switches buffering packets between ingress ASIC and egress scheduler. IC Role / Device Role / Timing Role: Acts as low-latency packet descriptor store accessed concurrently by traffic manager and classification engine. Use Value: 55 ns access time supports >10 Gbps line rates; byte-enable capability aligns with 64-bit AXI bus widths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1362BV33-55AXC | 3.3 V core supply, 55 ns access, 4K × 16 organization; LVCMOS I/O, no 2V retention | Targets modern low-voltage systems; lacks battery backup mode and TTL-level compatibility | Select when migrating to 3.3 V infrastructure and external level shifters are acceptable |
| AS7C34098B-55PCN | 5 V supply, 55 ns access, 4K × 16; no built-in semaphore logic or BUSY arbitration | Requires external logic for inter-processor sync; simpler interface but higher BOM count | Choose for cost-sensitive designs where software-managed semaphores suffice |
Compared with CY7C1362BV33-55AXC and AS7C34098B-55PCN, the 7024S55PF8 uniquely integrates hardware semaphore arbitration and 2V data retention within a TTL-compatible 5V interface - reducing system complexity in legacy industrial and aerospace platforms.
Availability
7024S55PF8 is available at Aetrix Electronics and suitable for industrial PLC memory buffers, avionics data exchange modules, and telecom line card packet buffers requiring stable component supply across extended product lifecycles.
Supply support for 7024S55PF8 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 semiconductor company specializing in timing, memory interface, RF, and power management ICs, now part of Renesas Electronics.
The IDT7024 family was designed specifically for high-reliability dual-processor systems requiring deterministic, contention-free memory access - targeting industrial automation, defense electronics, and telecommunications infrastructure.
FAQ
What is the maximum operating speed of the 7024S55PF8?
The 7024S55PF8 has a maximum read cycle time of 55 ns, corresponding to a theoretical maximum throughput of approximately 18.2 MHz for consecutive accesses. This speed is guaranteed over the full industrial temperature range (–40°C to +85°C) and 5.0 V ±10% supply voltage, making it suitable for real-time embedded applications demanding deterministic latency.
Does the 7024S55PF8 support battery backup operation?
Yes, the 7024S55PF8 supports battery backup operation with data retention down to 2.0 V. In this mode, the device maintains stored data with typical current consumption of ≤4 mA, enabling operation during main power failure or controlled shutdown sequences - a key requirement in avionics and industrial safety systems.
How does the M/S pin affect the BUSY signal behavior in the 7024S55PF8?
When M/S = HIGH, the 7024S55PF8 operates as a master and drives BUSY as an output flag indicating port contention. When M/S = LOW, it operates as a slave and accepts BUSY as an input signal to inhibit writes - enabling hierarchical arbitration in cascaded configurations without external logic.
Can the 7024S55PF8 perform simultaneous reads from both ports to the same memory location?
Yes, the 7024S55PF8 uses true dual-port SRAM cells that allow completely independent, simultaneous reads from both left and right ports to the identical address location. This capability eliminates arbitration delays and is essential for real-time monitoring and co-processor architectures.
What package type is used for the 7024S55PF8?
The 7024S55PF8 is packaged in a 100-pin Thin Quad Flatpack (TQFP) with dimensions of 14 mm × 14 mm × 1.4 mm and 0.5 mm lead pitch. This RoHS-compliant surface-mount package supports automated PCB assembly and provides thermal and mechanical reliability for industrial and aerospace applications.
7024S55PF8 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:
- 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)
7024S55PF8 FAQ
1.How can I place an order for 7024S55PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7024S55PF8 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 7024S55PF8 reliable?
The price and inventory of 7024S55PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7024S55PF8 is usually 5 days.
3.What payment methods are accepted for 7024S55PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7024S55PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7024S55PF8?
7024S55PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7024S55PF8 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 7024S55PF8?
For technical support, including 7024S55PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7024S55PF8 requirements.
6.How does Aetrix verify that 7024S55PF8 is sourced from the original manufacturer or authorized distributors?
All 7024S55PF8 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 7024S55PF8 meets industry standards.
7.What is the process for return or replacement of 7024S55PF8?
All 7024S55PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7024S55PF8, 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 7024S55PF8 part is unused and in its original packaging.
Return procedure for 7024S55PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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