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Renesas 7024S35PF8
- Part No.:
- 7024S35PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7024S35PF8.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,279
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Product details
Overview
7024S35PF8 from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 35 ns maximum read cycle time (tRC), TTL-compatible 5V ±10% supply, and on-chip semaphore/arbiration logic for concurrent access coordination - used in real-time digital signal processors, military avionics bus controllers, and redundant communication buffers requiring simultaneous read/write to same memory location.
For engineers reviewing the 7024S35PF8 datasheet, 7024S35PF8 pinout, 7024S35PF8 application, or 7024S35PF8 equivalent, key selection considerations include its Master/Slave BUSY flag arbitration, battery-backed data retention at 2V (L-version only), separate upper/lower byte enables, and compatibility with 84-pin PLCC packaging for legacy industrial control systems.
Technical Context
The 7024S35PF8 implements fully asynchronous dual-port operation with independent address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via BUSY flag signaling when M/S = H (Master) or L (Slave), and supports semaphore flag access using A0–A2 addressing with dedicated SEM pins.
It features full hardware semaphore support across both ports, interrupt flag generation (INTL/INTR), and separate upper-byte (UBR/UBL) and lower-byte (LBR/LBL) controls enabling multiplexed bus interfacing. The device operates in commercial temperature range (0°C to +70°C) and uses CMOS process for 750 mW typical active power consumption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 16 (64 Kbit), true dual-ported cells enabling simultaneous reads/writes to same address |
| Access Time (tRC) | 35 ns max - defines minimum read cycle interval for guaranteed timing compliance |
| Supply Voltage | 5.0 V ±10% - TTL-compatible single supply; no auxiliary voltage rails required |
| Operating Temperature | 0°C to +70°C - commercial grade; suitable for non-extended-environment embedded systems |
| Power Consumption | 750 mW typical active, 5 mW typical standby - enables low-heat-density board layouts |
| Package | 84-pin PLCC (PLG84) - surface-mount compatible with standard reflow profiles |
| Data Retention | 2 V minimum - supports battery backup mode only in L-version; S-version not rated |
Pinout & Package
7024S35PF8 is packaged in an 84-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 1.15 in × 1.15 in × 0.17 in. All VCC and GND pins must be connected per datasheet note; N/C pins are internally unconnected and must remain floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left/Right) | Active-low enable per port; deassertion places respective port in high-impedance standby |
| R/WL / R/WR | Read/Write Control (Left/Right) | Low = write, high = read; controls direction of data flow on associated I/O bus |
| OEL / OER | Output Enable (Left/Right) | Active-low; gates output drivers independently of CE/R/W state for bus sharing |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select | Enable 8-bit sub-word access; essential for 8-bit microprocessor bus compatibility |
| SEML / SEMR | Semaphore Enable | Activates 8-flag semaphore register accessed via A0–A2; enables inter-port synchronization |
| BUSYL / BUSYR | Busy Flag (Master Output / Slave Input) | M/S = H → BUSY is output; M/S = L → BUSY is input; signals port contention resolution status |
| INTL / INTR | Interrupt Flag | Open-collector push-pull output; asserts on semaphore change or arbitration event |
| A0L–A11L / A0R–A11R | Address Inputs (Left/Right) | 12-bit address bus per port; supports full 4K address space independently |
| I/O0L–I/O15L / I/O0R–I/O15R | Data I/O (Left/Right) | 16-bit bidirectional data bus per port; true dual-port allows concurrent access to same location |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous, independent read/write operations on left and right ports without external arbitration logic |
| On-Chip Semaphore Logic | Eight hardware semaphore flags accessible via A0–A2; eliminates need for discrete lock registers in multi-CPU systems |
| Master/Slave BUSY Arbitration | Configurable via M/S pin: Master outputs BUSY during contention; Slave inputs BUSY to stall writes - ensures deterministic priority |
| Separate Byte Enables | UBL/UBR and LBL/LBR allow 8-bit sub-word access - critical for integration with 8-bit peripherals or legacy microcontrollers |
| Asynchronous Operation | No clock required; timing governed solely by CE, R/W, OE, and address setup/hold - simplifies timing closure in mixed-signal designs |
Applications
| Real-Time DSP Buffering | Military Avionics Bus Controller |
|---|---|
|
Use Scenario: Dual-CPU system where one processor writes sensor data while another reads for FFT processing. IC Role / Device Role / Timing Role: Shared memory buffer with atomic semaphore-controlled access prevents race conditions during frame updates. Use Value: 35 ns tRC enables sub-30 MHz real-time sampling rates; true dual-port eliminates pipeline stalls during concurrent access. |
Use Scenario: Redundant flight control computer exchanging status vectors between primary and backup units. IC Role / Device Role / Timing Role: Inter-processor communication channel with BUSY-flag arbitration ensuring deterministic failover handshake timing. Use Value: M/S-configurable BUSY logic guarantees master-side priority during critical transitions; 84-pin PLCC supports ruggedized PCB mounting. |
| Industrial PLC I/O Mapping | Telecom Line Card Buffer |
|
Use Scenario: Programmable logic controller synchronizing field I/O scan cycles with HMI update cycles. IC Role / Device Role / Timing Role: Memory-mapped I/O register bank accessed simultaneously by scan engine (left port) and HMI interface (right port). Use Value: Separate UBL/LBL enables byte-granular updates; 5V TTL compatibility matches legacy RS-485 transceiver voltage levels. |
Use Scenario: TDM switch fabric buffering voice packets between line interface and switching matrix. IC Role / Device Role / Timing Role: Low-latency packet staging buffer with semaphore-based ownership handoff between ingress/egress engines. Use Value: 35 ns access time meets E1/T1 frame boundary timing; interrupt flag (INTL/INTR) triggers DMA on packet readiness. |
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-35AXC | 35 ns tRC, 4K × 16, 3.3V core with 5V-tolerant I/O; different pinout (100-pin TQFP) | Requires level-shifting for pure 5V systems; better suited for newer 3.3V designs with mixed-voltage interfaces | Select when migrating to lower-power 3.3V architecture and redesigning PCB layout is feasible |
| IDT7025S35PF8 | Same 4K × 16 organization and 35 ns speed, but adds JTAG boundary-scan test capability | Supports IEEE 1149.1 testing; requires additional TCK/TMS/TDO pins not present on 7024S35PF8 | Choose when production test coverage and debug visibility are mandatory for high-reliability deployments |
Compared with CY7C024AV-35AXC and IDT7025S35PF8, the 7024S35PF8 offers direct 5V-only compatibility and PLCC packaging ideal for legacy repair or drop-in replacement in existing commercial-grade systems without voltage translation or footprint changes.
Availability
7024S35PF8 is available at Aetrix Electronics and suitable for real-time DSP buffering, military avionics bus controllers, and industrial PLC I/O mapping requiring stable component supply across extended product lifecycles.
Supply support for 7024S35PF8 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.
The IDT7024 family was designed for high-reliability dual-processor systems requiring deterministic memory coherency - targeting aerospace, defense, and industrial automation applications where bus contention must be resolved in hardware.
FAQ
What is the maximum operating speed of the 7024S35PF8?
The 7024S35PF8 has a maximum read cycle time (tRC) of 35 ns, corresponding to a theoretical maximum throughput of approximately 28.6 MHz for consecutive read operations. This speed rating applies across the commercial temperature range (0°C to +70°C) under VCC = 5.0 V ±10%. The 7024S35PF8 does not support faster speeds - no 25 ns or 20 ns variants exist for this specific part number.
Does the 7024S35PF8 support battery backup data retention?
No, the 7024S35PF8 does not support battery backup data retention. Only the 'L' version (e.g., 7024L35PF8) is specified for 2V data retention operation. The 'S' suffix denotes standard power consumption (750 mW active, 5 mW standby) without low-voltage retention capability. Using 7024S35PF8 below 4.5 V may result in data loss.
How is port arbitration handled on the 7024S35PF8?
Port arbitration on the 7024S35PF8 is managed via the M/S pin and BUSY flag signaling. When M/S = H, the device acts as Master and drives BUSYL/BUSYR outputs to indicate contention; when M/S = L, it acts as Slave and samples BUSY inputs to stall writes. This hardware-based scheme eliminates software polling and ensures deterministic resolution without external logic.
What package type is used for the 7024S35PF8?
7024S35PF8 uses an 84-pin Plastic Leaded Chip Carrier (PLCC), designated PLG84 in IDT documentation. The package measures approximately 1.15 in × 1.15 in × 0.17 in and is leaded for through-hole or surface-mount assembly. It is not offered in PGA, Flatpack, or TQFP variants under this specific part number.
Can the 7024S35PF8 be used in a Master/Slave cascaded configuration?
Yes, the 7024S35PF8 supports Master/Slave cascading via the M/S pin to expand data bus width beyond 16 bits. Multiple devices can be connected with one set as Master (M/S = H) and others as Slaves (M/S = L), using BUSY flag handshaking to coordinate access. This configuration enables seamless 32-bit or wider memory systems without external glue logic.
7024S35PF8 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:
- 35ns
- Access Time:
- 35 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)
7024S35PF8 FAQ
1.How can I place an order for 7024S35PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7024S35PF8 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 7024S35PF8 reliable?
The price and inventory of 7024S35PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7024S35PF8 is usually 5 days.
3.What payment methods are accepted for 7024S35PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7024S35PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7024S35PF8?
7024S35PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7024S35PF8 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 7024S35PF8?
For technical support, including 7024S35PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7024S35PF8 requirements.
6.How does Aetrix verify that 7024S35PF8 is sourced from the original manufacturer or authorized distributors?
All 7024S35PF8 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 7024S35PF8 meets industry standards.
7.What is the process for return or replacement of 7024S35PF8?
All 7024S35PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7024S35PF8, 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 7024S35PF8 part is unused and in its original packaging.
Return procedure for 7024S35PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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