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Renesas 7024L35PFI
- Part No.:
- 7024L35PFI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7024L35PFI.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,703
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Product details
Overview
7024L35PFI from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 35 ns max 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 signaling, and master/slave arbitration for 32-bit+ bus expansion in real-time embedded systems.
For engineers reviewing the 7024L35PFI datasheet, 7024L35PFI pinout, 7024L35PFI application, or 7024L35PFI equivalent, key selection criteria include dual-port arbitration latency, BUSY flag timing (tBAA ≤ 20 ns), data retention at 2V, low standby current (1 µA typ.), and compatibility with PLCC-84 or TQFP-100 footprints in deterministic multi-processor memory interfaces.
Technical Context
The 7024L35PFI implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port, enabling concurrent read/write operations-even to the same memory location-via true dual-ported SRAM cells. Its on-chip arbitration logic resolves port contention using BUSY flag assertion and M/S-selectable master/slave mode.
It integrates full hardware semaphore support (8 flags addressed by A0–A2), interrupt flag generation (INTL/INTR), and byte-level control (UBL/UBR, LBL/LBR) for multiplexed bus interfacing. Battery backup operation retains data at VCC = 2V with ICCDR ≤ 4 mA (industrial grade).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 16 (64 Kbit), true dual-port SRAM with independent left/right address/data/control paths |
| Access Time (max) | 35 ns - guarantees worst-case read latency for real-time deterministic response in industrial control loops |
| Supply Voltage | 5.0 V ±10% - compatible with legacy TTL logic families without level-shifting |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation and motor drives |
| Standby Current (typ.) | 1 µA - enables ultra-low-power battery-backed data retention during system sleep states |
| Data Retention Voltage | 2.0 V minimum - sustains memory contents during brown-out or backup battery operation |
| I/O Interface | TTL-compatible inputs/outputs - direct interfacing with 5V microcontrollers, FPGAs, and ASICs |
Pinout & Package
7024L35PFI is available in 84-pin PLCC (PLG84) and 100-pin TQFP (PNG100) packages. The PLCC variant uses a standard 28.57 mm × 28.57 mm body with J-lead configuration; the TQFP variant measures 14 mm × 14 mm × 1.4 mm with 0.5 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L / A0R–A11R | Address Inputs (Left/Right) | 12-bit independent address buses enable full 4K-word addressing per port without external decoding |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data I/O (Left/Right) | 16-bit parallel data paths per port; upper/lower byte enables (UBL/LBL, UBR/LBR) support 8-bit bus multiplexing |
| CEL / CER | Chip Enable (Left/Right) | Asynchronous port activation; deassertion places respective port in ultra-low-power standby (ISB3 ≤ 5 µA) |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low write enable; combined with CE and OE, defines full read/write cycle timing (tWC = 35 ns) |
| OEL / OER | Output Enable (Left/Right) | Tri-states I/O drivers independently per port; critical for bus sharing in multi-master systems |
| SEML / SEMR | Semaphore Enable (Left/Right) | Activates 8-flag semaphore register (addressed by A0–A2); enables inter-processor synchronization without software overhead |
| BUSYL / BUSYR | Busy Flag (Left/Right) | Open-collector output (master) or input (slave); signals port contention during simultaneous access to same address |
| M/S | Master/Slave Select | Configures device role: HIGH = BUSY output (master), LOW = BUSY input (slave) for cascaded multi-device systems |
| INTL / INTR | Interrupt Flag (Left/Right) | Push-pull output asserts on semaphore change or write completion; triggers CPU interrupt without polling |
| VCC / GND | Power Supply | Multiple VCC/GND pins (12 total) ensure low-noise operation and robust decoupling for high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Simultaneous reads/writes to identical addresses on both ports-enables lock-free shared memory in dual-CPU systems |
| On-Chip Semaphore Logic | Hardware-managed 8-flag semaphore bank (A0–A2 addressable) eliminates need for external arbitration logic or software mutexes |
| Master/Slave Cascading | Supports 32-bit+ data bus expansion via M/S pin; eliminates external glue logic when stacking multiple 7024L35PFI devices |
| 2V Data Retention | Maintains stored data during power loss or brown-out using backup battery-critical for nonvolatile state preservation |
| Industrial Temperature Range | Validated operation from –40°C to +85°C ensures reliability in harsh environments like industrial PLCs and motor controllers |
| Low-Power Standby Mode | 1 µA typical ISB3 current (CMOS-level inputs) enables energy-efficient idle states in battery-powered edge nodes |
Applications
| Industrial Motion Control | Dual-Core DSP Memory Interface |
|---|---|
|
Use Scenario: Real-time coordination between motion controller CPU and FPGA-based servo driver using shared trajectory buffers. IC Role / Device Role / Timing Role: Dual-port RAM acts as deterministic, low-latency shared memory with hardware semaphore synchronization between CPU and FPGA. Use Value: Eliminates software polling and reduces inter-processor latency to ≤35 ns, enabling sub-millisecond motion loop updates. |
Use Scenario: Two DSP cores accessing common coefficient tables and FFT result buffers in audio processing equipment. IC Role / Device Role / Timing Role: Provides concurrent, conflict-free memory access with BUSY flag arbitration to prevent data corruption during simultaneous writes. Use Value: Guarantees atomic semaphore flag updates (tSPS = 5 ns), enabling reliable core-to-core handshaking without external logic. |
| Redundant PLC Memory Module | Avionics Data Logger Buffer |
|
Use Scenario: Hot-swap-capable PLC backplane where primary and backup CPUs share configuration and I/O status data. IC Role / Device Role / Timing Role: Acts as fault-tolerant shared memory with master/slave arbitration; M/S pin configures active/standby roles. Use Value: Enables seamless failover with <20 ns BUSY assertion (tBAA), preserving real-time determinism during switchover. |
Use Scenario: High-integrity flight data recorder capturing sensor streams from multiple avionics buses into persistent buffer memory. IC Role / Device Role / Timing Role: Serves as radiation-tolerant, battery-backed memory buffer with 2V data retention for crash survivability. Use Value: Ensures 64 Kbit of critical telemetry remains intact after main power loss, meeting DO-178C data integrity requirements. |
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 access, 4K × 16, but uses 3.3V supply and LVCMOS I/O; no 2V data retention | Requires level translation in 5V systems; unsuitable for battery backup scenarios | Select when migrating to lower-voltage designs with existing 3.3V infrastructure |
| AS7C34096B-35JCIN | 35 ns access, 4K × 16, but single-port only; lacks BUSY, semaphore, and M/S logic | No hardware arbitration or inter-processor sync capability; requires external logic for dual-CPU use | Select only for cost-sensitive, single-processor applications where dual-port features are unused |
Compared with CY7C024AV-35AXC and AS7C34096B-35JCIN, the 7024L35PFI uniquely delivers 5V TTL compatibility, 2V data retention, and integrated hardware arbitration-making it irreplaceable in legacy industrial and safety-critical dual-processor systems requiring zero-software-sync memory sharing.
Availability
7024L35PFI is available at Aetrix Electronics and suitable for industrial motion control, redundant PLCs, dual-core DSP interfaces, and avionics data loggers requiring stable component supply across extended product lifecycles.
Supply support for 7024L35PFI 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 sensor solutions, now part of Renesas Electronics.
The 7024L35PFI belongs to IDT's legacy high-speed dual-port SRAM family, engineered for deterministic real-time memory sharing in industrial, military, and telecom infrastructure where hardware arbitration and data retention are mission-critical.
FAQ
What is the maximum operating temperature range for the 7024L35PFI?
The 7024L35PFI is rated for industrial temperature operation from –40°C to +85°C, verified across all electrical parameters including access time, standby current, and data retention. This range is explicitly specified in the datasheet's "Maximum Operating Temperature" table and applies to the PFI suffix variant.
Does the 7024L35PFI support battery backup operation, and what voltage is required?
Yes, the 7024L35PFI supports battery backup operation with guaranteed data retention down to VCC = 2.0 V. The "L" in the part number denotes the low-power version optimized for this function, and ICCDR is specified at ≤4 mA under industrial conditions per the Data Retention Characteristics table.
How does the M/S pin configure master versus slave operation in the 7024L35PFI?
When M/S = HIGH, the 7024L35PFI operates as a master: BUSYL and BUSYR become push-pull outputs indicating port contention. When M/S = LOW, it operates as a slave: BUSYL and BUSYR become inputs, allowing external master arbitration-enabling scalable multi-device 32-bit+ memory systems without external logic.
What is the purpose of the semaphore functionality in the 7024L35PFI, and how is it accessed?
The 7024L35PFI provides eight hardware semaphores addressed by A0–A2 and controlled via SEML/SEMR. Access occurs when CE = VIH (or UB & LB = VIH) and SEM = VIL-separating semaphore operations from main memory access to prevent interference. Each flag supports atomic set/clear for inter-processor synchronization.
Which package options are available for the 7024L35PFI, and are they pin-compatible?
The 7024L35PFI is offered in 84-pin PLCC (PLG84) and 100-pin TQFP (PNG100) packages. These are not pin-compatible: PLCC has dedicated I/O pin mapping per port with shared VCC/GND, while TQFP adds NC pins and redistributes control signals. Designers must select one footprint and verify against the corresponding pin diagram in the datasheet.
7024L35PFI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tray
- 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)
7024L35PFI FAQ
1.How can I place an order for 7024L35PFI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7024L35PFI 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 7024L35PFI reliable?
The price and inventory of 7024L35PFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7024L35PFI is usually 5 days.
3.What payment methods are accepted for 7024L35PFI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7024L35PFI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7024L35PFI?
7024L35PFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7024L35PFI 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 7024L35PFI?
For technical support, including 7024L35PFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7024L35PFI requirements.
6.How does Aetrix verify that 7024L35PFI is sourced from the original manufacturer or authorized distributors?
All 7024L35PFI 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 7024L35PFI meets industry standards.
7.What is the process for return or replacement of 7024L35PFI?
All 7024L35PFI units undergo pre-shipment inspection (PSI). If there is an issue with 7024L35PFI, 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 7024L35PFI part is unused and in its original packaging.
Return procedure for 7024L35PFI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7024L35PFI Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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