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Renesas 7024S35G
- Part No.:
- 7024S35G
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 84-BPGA
- Datasheet:
-
7024S35G.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 84PGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,228
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Product details
Overview
7024S35G from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 35 ns max read cycle time (commercial grade), TTL-compatible 5V ±10% supply, and on-chip semaphore arbitration logic. It enables simultaneous asynchronous access to the same memory location and supports master/slave cascading for 32-bit+ bus expansion in real-time embedded control systems.
For engineers reviewing the 7024S35G datasheet, 7024S35G pinout, 7024S35G application, or 7024S35G equivalent, key selection criteria include dual-port contention handling, BUSY/INT flag timing (tBAA ≤ 35 ns), battery-backed data retention at 2V (L-version only), and compatibility with 84-pin PLCC/PGA/Flatpack or 100-pin TQFP footprints.
Technical Context
The 7024S35G implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves port conflicts via BUSY flag signaling and supports semaphore flag management across eight dedicated registers addressed by A0–A2.
It features independent upper-byte (UB/UBR) and lower-byte (LB/LBR) enables for multiplexed bus compatibility, full TTL-level interface compliance, and automatic power-down when CE is deasserted - reducing standby current to 13 mA (TTL inputs) or 1.0 mA (CMOS inputs) in the S-version.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 16 bits (64 Kbit total), true dual-port SRAM with simultaneous read capability |
| Max Read Cycle Time | 35 ns - defines minimum clock period for reliable read operations in high-speed controllers |
| Supply Voltage | 5.0 V ±10% - single TTL-compatible rail; no auxiliary supplies required |
| Operating Temperature | 0°C to +70°C - commercial-grade rating suitable for industrial computing and communications equipment |
| Standby Current (ISB1) | 13 mA max (TTL inputs) - enables low-power idle mode without external power gating |
| Data Retention | 2 V min (L-version only) - not applicable to 7024S35G; this is an S-version part |
| Package Options | 84-pin PLCC, PGA, Flatpack; 100-pin TQFP - footprint flexibility for legacy and space-constrained designs |
Pinout & Package
7024S35G is available in 84-pin PLCC (PLG84), 84-pin PGA (GU84), 84-pin Flatpack (FP84), and 100-pin TQFP (PNG100) packages. Pin functions are identical across all variants; mechanical dimensions and thermal characteristics differ per package type.
| 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 port's I/O bus |
| OEL / OER | Output Enable (Left / Right) | Tri-states I/O pins independently; allows shared bus usage without contention |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select | Enables byte-granular writes (I/O8–I/O15 or I/O0–I/O7) for 8-bit subsystem interfacing |
| SEML / SEMR | Semaphore Enable | Activates 8-flag semaphore register access via A0–A2; critical for inter-processor synchronization |
| BUSYL / BUSYR | Busy Flag (Master Output / Slave Input) | Indicates port arbitration status; M/S = H configures BUSY as output, M/S = L as input |
| INTL / INTR | Interrupt Flag | Open-drain push-pull output signals semaphore or memory event completion to host processor |
| A0L–A11L / A0R–A11R | Address Inputs | 12-bit address per port selects one of 4K locations; independent addressing enables concurrent access |
| I/O0L–I/O15L / I/O0R–I/O15R | Data I/O Bus | 16-bit bidirectional data path per port; supports simultaneous reads from same address |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables concurrent, asynchronous reads/writes from both ports - eliminates software polling in real-time dual-CPU systems |
| On-Chip Semaphore Logic | Eight hardware semaphore flags accessible via A0–A2 simplify inter-processor resource locking without external logic |
| Master/Slave Cascading Support | M/S pin configures BUSY as output (master) or input (slave), enabling seamless 32-bit+ word-width expansion |
| Full Asynchronous Operation | No clock required; timing governed solely by CE/R/W/OE setup/hold - ideal for mixed-signal or legacy bus environments |
| TTL-Compatible Interface | Direct connection to 5V microcontrollers and FPGAs without level-shifting; VIH = 2.2 V, VIL = 0.8 V |
Applications
| Industrial Motion Controller | Avionics Data Acquisition Unit |
|---|---|
Use Scenario: Two independent processors manage servo positioning (CPU A) and safety monitoring (CPU B) sharing sensor and command data. IC Role / Device Role / Timing Role: 7024S35G serves as synchronized shared memory with hardware semaphore arbitration to prevent race conditions during joint access to motion profiles. Use Value: Eliminates need for discrete arbitration logic and reduces inter-processor latency to ≤35 ns for deterministic response. |
Use Scenario: Flight data recorder interfaces with analog front-end ADC and flight management system over separate buses. IC Role / Device Role / Timing Role: 7024S35G acts as buffer between high-speed sampled data stream (right port) and packetized telemetry upload (left port). Use Value: Enables continuous acquisition at 20+ MSPS while allowing non-blocking telemetry reads without FIFO overflow or dropped samples. |
| Telecom Line Card Buffer | Medical Imaging Subsystem |
Use Scenario: Packet processing ASIC and network processor exchange frame metadata and status flags in carrier-grade switching hardware. IC Role / Device Role / Timing Role: 7024S35G provides low-latency, contention-free memory for header parsing results and queue management counters. Use Value: Achieves sub-40 ns read access and hardware semaphore support ensures atomic counter updates across parallel packet paths. |
Use Scenario: Real-time image reconstruction engine (FPGA) and display controller (ARM SoC) share processed DICOM frames. IC Role / Device Role / Timing Role: 7024S35G functions as dual-access frame buffer with byte-select enables supporting partial region-of-interest transfers. Use Value: Allows FPGA to write reconstructed pixel blocks while ARM reads display-ready tiles - no software-managed copy overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1354V25 | 3.3V core, 25 ns access, QDR architecture with separate read/write ports - no native semaphore logic | Requires external arbitration for multi-processor sync; suited for high-throughput streaming, not lock-based control | Select when migrating to 3.3V systems and prioritizing bandwidth over hardware semaphores |
| IDT70V25S25PF | 3.3V supply, 25 ns access, integrated JTAG boundary scan, but no BUSY/INT flag outputs | Lacks dedicated interrupt signaling; requires polling or external logic for event notification | Choose for testability-critical avionics where JTAG debug access outweighs interrupt latency needs |
Compared with CY7C1354V25 and IDT70V25S25PF, the 7024S35G delivers native 5V TTL compatibility, hardware semaphore support, and BUSY/INT flag outputs - making it uniquely suited for legacy industrial and military dual-CPU architectures requiring deterministic, low-overhead inter-processor communication.
Availability
7024S35G is available at Aetrix Electronics and suitable for industrial motion control, avionics data acquisition, and telecom line card applications requiring stable component supply, long-term obsolescence management, and traceable sourcing from authorized channels.
Supply support for 7024S35G 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 high-performance interconnect solutions, now part of Renesas Electronics.
The 7024S35G belongs to IDT's legacy dual-port SRAM product line, designed specifically for real-time embedded systems requiring deterministic, contention-free memory access between independent processors or data paths.
FAQ
What is the maximum operating speed of the 7024S35G?
The 7024S35G has a maximum read cycle time of 35 ns, corresponding to a theoretical maximum throughput of approximately 28.6 MHz for consecutive read operations. This speed applies under commercial temperature conditions (0°C to +70°C) with VCC = 5.0 V ±10% and specified AC test loads. The 7024S35G does not require a clock signal - its timing is fully asynchronous and governed by CE, R/W, and OE setup/hold relationships.
Does the 7024S35G support battery backup for data retention?
No, the 7024S35G does not support battery backup data retention. That feature is exclusive to the 'L' version (e.g., 7024L35G), which specifies 2 V minimum VCC for data retention. The 'S' suffix denotes standard power consumption (750 mW active, 13 mA ISB1 standby), and the 7024S35G requires continuous 5 V operation to maintain memory state.
How does the BUSY flag function in master/slave configuration with the 7024S35G?
When M/S = HIGH, the 7024S35G operates as a master and drives BUSYL/BUSYR as outputs indicating port contention; when M/S = LOW, it acts as a slave and accepts BUSY as inputs to stall writes. In cascaded systems, the master's BUSY output connects to the slave's BUSY input, enabling hardware-enforced serialization of conflicting accesses - a key mechanism for deterministic dual-processor coordination in the 7024S35G.
Can the 7024S35G be used with 3.3V logic interfaces?
The 7024S35G is strictly a 5V TTL-compatible device: VIH = 2.2 V min, VIL = 0.8 V max, and VCC must be 4.5–5.5 V. Direct connection to 3.3V logic risks violating input voltage thresholds and may cause unreliable operation. Level translation (e.g., TXB0108 or discrete MOSFET buffers) is required for interoperability with 3.3V FPGAs or microcontrollers - the 7024S35G itself provides no internal voltage translation.
What package types are available for the 7024S35G?
The 7024S35G is offered in four industry-standard packages: 84-pin PLCC (PLG84), 84-pin ceramic PGA (GU84), 84-pin Flatpack (FP84), and 100-pin thin quad flatpack (PNG100). All share identical pinout and electrical behavior; selection depends on thermal requirements, PCB assembly method (through-hole vs. surface-mount), and board space constraints - the PLCC variant is most common in legacy industrial designs.
7024S35G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 84-BPGA
- 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:
- 35ns
- Access Time:
- 35 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 84-PGA (27.94x27.94)
7024S35G FAQ
1.How can I place an order for 7024S35G through Aetrix?
Please submit a Request for Quotation (RFQ) for 7024S35G 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 7024S35G reliable?
The price and inventory of 7024S35G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7024S35G is usually 5 days.
3.What payment methods are accepted for 7024S35G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7024S35G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7024S35G?
7024S35G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7024S35G 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 7024S35G?
For technical support, including 7024S35G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7024S35G requirements.
6.How does Aetrix verify that 7024S35G is sourced from the original manufacturer or authorized distributors?
All 7024S35G 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 7024S35G meets industry standards.
7.What is the process for return or replacement of 7024S35G?
All 7024S35G units undergo pre-shipment inspection (PSI). If there is an issue with 7024S35G, 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 7024S35G part is unused and in its original packaging.
Return procedure for 7024S35G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7024S35G Tags
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AT24C02C-XHM-T
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