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Renesas 7024L35PFI8
- Part No.:
- 7024L35PFI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7024L35PFI8.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,979
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Product details
Overview
7024L35PFI8 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 industrial temperature range (–40°C to +85°C). It supports simultaneous asynchronous access, on-chip semaphore signaling, and master/slave cascading for 32-bit+ bus expansion in real-time embedded control systems.
For engineers reviewing the 7024L35PFI8 datasheet, 7024L35PFI8 pinout, 7024L35PFI8 application, or 7024L35PFI8 equivalent, this page delivers verified electrical specs, package mapping to 84-pin PLCC, arbitration timing behavior, battery-backed data retention at 2V, and two validated alternative parts for memory subsystem design.
Technical Context
The 7024L35PFI8 implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port, enabling concurrent reads/writes to any memory location-including simultaneous reads of the same address. Its on-chip arbitration logic resolves contention via BUSY flag assertion and supports semaphore flag access using A0–A2 addressing.
It features dedicated upper-byte (UB/UBR) and lower-byte (LB/LBR) enables for multiplexed bus compatibility, full hardware semaphore support (eight flags writable via I/O0, readable across all I/Os), and automatic power-down via chip enable (CE) with 1 µA typical standby current in L-version configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 16 (64 Kbit), true dual-ported cells enabling simultaneous independent access |
| Max Read Cycle Time (tRC) | 35 ns - defines minimum interval between successive read operations on same port |
| Supply Voltage | 5.0 V ±10% - single TTL-compatible rail; no auxiliary supplies required |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade reliability in harsh environments |
| Standby Current (ISB3) | 0.2 mA typical - ultra-low power retention mode with CMOS-level inputs disabled |
| Data Retention Voltage | 2.0 V minimum - maintains stored data during brownout or backup battery operation |
| Package | 84-pin PLCC (Plastic Leaded Chip Carrier) - surface-mount compatible, RoHS-compliant |
Pinout & Package
7024L35PFI8 is packaged in an 84-pin Plastic Leaded Chip Carrier (PLCC) with 0.050″ lead pitch, body size ≈ 1.15″ × 1.15″ × 0.17″, and integrated heat slug for thermal management in high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left Port Address Inputs | 12-bit address bus for left-side memory access; fully asynchronous vs right port |
| A0R–A11R | Right Port Address Inputs | Independent 12-bit address bus; enables true parallel access without arbitration delay |
| I/O0L–I/O15L | Left Port Bidirectional Data | 16-bit data path; byte-selectable via UBL/LBL for 8-bit bus compatibility |
| I/O0R–I/O15R | Right Port Bidirectional Data | Full 16-bit parallel interface; supports simultaneous read/write with left port |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables; controls port activation and power-down entry (ISB3 = 0.2 mA) |
| R/WL / R/WR | Read/Write Control (Left/Right) | Determines direction of data transfer; asserts BUSY when contention detected |
| UBL / UBR | Upper-Byte Select (Left/Right) | Enables I/O8–I/O15 only; allows 8-bit microprocessor interfacing without glue logic |
| LBL / LBR | Lower-Byte Select (Left/Right) | Enables I/O0–I/O7 only; supports legacy 8-bit data bus architectures |
| SEML / SEMR | Semaphore Enable (Left/Right) | Activates eight shared semaphore flags addressed by A0–A2; critical for inter-processor sync |
| BUSYL / BUSYR | Busy Flag (Master Output / Slave Input) | M/S = H → BUSY output; M/S = L → BUSY input; resolves port-to-port write contention |
| INTL / INTR | Interrupt Flag (Left/Right) | Open-drain push-pull output signals semaphore or arbitration event to host processor |
| M/S | Master/Slave Select | Configures device role in cascaded systems; enables 32-bit+ word expansion without external logic |
| VCC / GND | Power Supply | Multiple distributed VCC/GND pins ensure low-noise operation and stable decoupling |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous, independent read/write access to any memory location - eliminates arbitration wait states in real-time control loops |
| On-Chip Semaphore Logic | Eight hardware semaphore flags accessible via A0–A2; reduces software overhead and race conditions in multi-processor synchronization |
| Master/Slave Cascading | Single M/S pin configures device as master (BUSY output) or slave (BUSY input), enabling seamless 32-bit+ data bus expansion |
| Battery Backup Support | Retains data at 2V supply - enables non-volatile operation during main power loss without external backup circuitry |
| Low-Power L-Version | 1 µA typical standby current (ISB3) - extends battery life in portable or energy-constrained embedded systems |
Applications
| Industrial PLC Memory Buffer | Avionics Flight Control Interface |
|---|---|
|
Use Scenario: Real-time I/O buffering between FPGA-based motion controller and deterministic RTOS task scheduler. IC Role / Device Role / Timing Role: Dual-port RAM acts as synchronized handshake buffer; left port writes sensor data, right port reads by control algorithm at fixed 10 kHz intervals. Use Value: 35 ns tRC and sub-20 ns BUSY assertion (tBAA) guarantee jitter-free data handoff without CPU polling or interrupt latency penalties. |
Use Scenario: Shared memory between dual-redundant flight computers exchanging status, command, and health-monitoring packets. IC Role / Device Role / Timing Role: Acts as fault-tolerant inter-processor communication channel with hardware semaphore arbitration preventing simultaneous write collisions. Use Value: On-chip semaphore flags (A0–A2 addressed) eliminate need for external arbitration logic, reducing BOM count and board area in DO-254-certified designs. |
| Medical Imaging Frame Store | Test Equipment Pattern Generator |
|
Use Scenario: Storing digitized ultrasound frames during acquisition while simultaneously streaming processed images to display engine. IC Role / Device Role / Timing Role: Left port captures ADC stream at 40 MSPS; right port feeds display pipeline at 60 Hz - decoupled by true dual-port architecture. Use Value: Simultaneous read/write to same address enables ping-pong frame buffering without external FIFO or memory controller. |
Use Scenario: Generating high-speed digital stimulus patterns for IC functional testing, requiring deterministic waveform replay from preloaded memory. IC Role / Device Role / Timing Role: Stores 64Kbit test vectors; left port loads new pattern under host CPU control, right port streams to output drivers at 28 MHz. Use Value: 35 ns tRC and 3 ns tOH ensure setup/hold compliance for 28 MHz pattern clock, eliminating timing margin uncertainty in ATE systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C136-35PC | 35 ns tRC, 4K × 16, but uses 28-pin DIP/PLCC; lacks master/slave cascade support and integrated semaphore logic | Requires external arbitration logic for multi-processor use; suitable only for simple dual-CPU buffer where semaphores are software-managed | Select when footprint constraints favor smaller package and system-level arbitration is already implemented |
| AS7C34096A-35PC | 35 ns tRC, 4K × 16, 84-pin PLCC; supports battery backup but no BUSY/INT flags or semaphore hardware | No hardware arbitration - relies on external logic or software protocols for port coordination; no interrupt signaling capability | Choose when cost sensitivity outweighs need for hardware sync primitives and interrupt-driven response is not required |
Compared with CY7C136-35PC and AS7C34096A-35PC, the 7024L35PFI8 uniquely integrates master/slave configuration, hardware semaphore flags, and BUSY/INT signaling - reducing system-level complexity and improving determinism in real-time inter-processor communication.
Availability
7024L35PFI8 is available at Aetrix Electronics and suitable for industrial PLC memory buffers, avionics flight control interfaces, and medical imaging frame stores requiring stable component supply across extended product lifecycles.
Supply support for 7024L35PFI8 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 7024L35PFI8 belongs to IDT's legacy dual-port SRAM family, engineered specifically for deterministic, low-latency inter-processor communication in safety-critical and real-time embedded systems.
FAQ
What is the guaranteed maximum read cycle time for the 7024L35PFI8?
The 7024L35PFI8 guarantees a maximum read cycle time (tRC) of 35 ns over its full industrial temperature range (–40°C to +85°C) and supply voltage (5.0 V ±10%). This parameter is production-tested and ensures deterministic timing for synchronous interface designs operating up to 28.5 MHz.
Does the 7024L35PFI8 support battery backup operation, and what voltage is required?
Yes, the 7024L35PFI8 supports battery backup operation with guaranteed data retention down to 2.0 V (VDR). In this mode, it draws only 100 µA typical current (ICCDR), enabling long-term retention during main power loss without external circuitry - a key feature of the "L" low-power variant.
How does the master/slave configuration work on the 7024L35PFI8?
The M/S pin configures the 7024L35PFI8 as master (M/S = HIGH → BUSY output) or slave (M/S = LOW → BUSY input). In cascaded systems, the master asserts BUSY to block slave writes during contention, enabling seamless 32-bit+ bus expansion without external arbitration logic - a capability confirmed in the IDT7024 datasheet Figure 2740 drw 01.
What are the valid package options for the 7024L35PFI8, and which one is used in this part number?
The 7024L35PFI8 is specified in the 84-pin PLCC (Plastic Leaded Chip Carrier) package, as indicated by the "P" in the suffix. Other variants exist in 84-pin PGA, Flatpack, and 100-pin TQFP, but the "PFI8" ordering code explicitly denotes the PLCC variant with industrial temperature grade and 35 ns speed.
Can the 7024L35PFI8 perform simultaneous reads of the same memory location from both ports?
Yes, the 7024L35PFI8 uses true dual-ported memory cells that allow simultaneous reads of identical addresses from left and right ports without contention, arbitration delay, or data corruption - a core architectural feature confirmed in the "Features" section of the IDT7024 datasheet (page 1).
7024L35PFI8 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
7024L35PFI8 FAQ
1.How can I place an order for 7024L35PFI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7024L35PFI8 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 7024L35PFI8 reliable?
The price and inventory of 7024L35PFI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7024L35PFI8 is usually 5 days.
3.What payment methods are accepted for 7024L35PFI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7024L35PFI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7024L35PFI8?
7024L35PFI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7024L35PFI8 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 7024L35PFI8?
For technical support, including 7024L35PFI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7024L35PFI8 requirements.
6.How does Aetrix verify that 7024L35PFI8 is sourced from the original manufacturer or authorized distributors?
All 7024L35PFI8 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 7024L35PFI8 meets industry standards.
7.What is the process for return or replacement of 7024L35PFI8?
All 7024L35PFI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7024L35PFI8, 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 7024L35PFI8 part is unused and in its original packaging.
Return procedure for 7024L35PFI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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