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Renesas 7024L45J
- Part No.:
- 7024L45J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 84-LCC (J-Lead)
- Datasheet:
-
7024L45J.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 84PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,027
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Product details
Overview
7024L45J from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 45 ns maximum read cycle time (tRC), 2V data retention capability, and full on-chip semaphore/arbiration logic - enabling simultaneous asynchronous access in real-time inter-processor communication systems such as radar signal processors and industrial motion controllers.
For engineers reviewing the 7024L45J datasheet, 7024L45J pinout, 7024L45J application, or 7024L45J equivalent, key selection criteria include its 45 ns access timing, L-version ultra-low standby current (1 µA typ. at 2V), dual-port arbitration behavior under M/S configuration, and compatibility with 84-pin PLCC packaging for legacy board reuse.
Technical Context
The 7024L45J implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port, supporting concurrent reads/writes to the same memory location without external logic. Its on-chip arbitration resolves contention via BUSY flag signaling and master/slave select (M/S) configuration.
It integrates dedicated semaphore logic accessible via A0–A2 addressing and I/O0 write, with guaranteed 5 ns semaphore update pulse (tSOP) and 5 ns contention window (tSPS). Battery backup mode operates down to 2V with ≤4 mA retention current across military/industrial temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 16 bits (64 Kbit total); supports 32-bit bus expansion via master/slave cascading |
| Access Time (tRC) | 45 ns max - defines minimum read cycle interval for sustained throughput in real-time DSP buffers |
| Standby Current (ISB3) | 0.2 µA typ. at 2V - enables battery-backed data retention for >10 years in power-critical applications |
| Operating Voltage | 5.0 V ±10%; TTL-compatible inputs ensure direct interfacing with legacy 5V logic families |
| Temperature Range | –40°C to +85°C - qualified for industrial embedded control and avionics subsystems |
| Package | 84-pin PLCC (PLG84) - surface-mount compatible with reflow assembly and field-replaceable socketing |
| Bus Width Control | Separate UBL/LBL enables byte-level writes on multiplexed 16-bit data buses without glue logic |
Pinout & Package
7024L45J is packaged in an 84-pin Plastic Leaded Chip Carrier (PLCC, package code PLG84), measuring approximately 1.15 in × 1.15 in × 0.17 in. All VCC and GND pins must be externally decoupled per datasheet layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left Port Address Inputs | 12-bit address bus for left-side memory access; independent of right port |
| I/O0L–I/O15L | Left Port Data I/O | Bidirectional 16-bit data path; controlled by UBL/LBL and R/WL |
| CEL, OEL, R/WL | Left Port Enables | Chip Enable, Output Enable, Read/Write control - fully asynchronous with no clock required |
| SEML, UBL, LBL | Left Port Semaphore/Byte Select | Enables semaphore flag access or upper/lower byte masking during writes |
| BUSYL, INTL, M/S | Left Port Status/Control | BUSY output (master) or input (slave); interrupt flag; master/slave mode select |
| A0R–A11R | Right Port Address Inputs | Fully independent 12-bit address space - allows concurrent access to same or different locations |
| I/O0R–I/O15R | Right Port Data I/O | Independent 16-bit bidirectional path; synchronized only by internal arbitration |
| CER, OER, R/WR | Right Port Enables | Asynchronous enable set mirroring left port - no shared timing constraints |
| SEMR, UBR, LBR | Right Port Semaphore/Byte Select | Full semaphore functionality mirrored on right port for symmetric inter-processor signaling |
| BUSYR, INTR | Right Port Status | BUSY flag indicates arbitration conflict; INTR signals semaphore or write completion events |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Simultaneous read/write to identical addresses without collision - eliminates need for external arbitration logic in multi-CPU systems |
| On-Chip Semaphore Logic | Eight hardware semaphore flags addressable via A0–A2; enables lock-step synchronization between independent processors |
| Master/Slave Cascading | M/S pin configures device as master (BUSY output) or slave (BUSY input) - supports error-free 32-bit+ word expansion |
| 2V Data Retention | Retains memory contents at 2V supply - enables seamless transition to battery backup during main power loss |
| Ultra-Low Standby Power | 1 µA typical ISB3 current at 2V - extends battery life in always-on monitoring or safety-critical holdover modes |
| Industrial Temperature Rating | –40°C to +85°C operation - validated for deployment in motor drives, PLC backplanes, and outdoor telecom equipment |
Applications
| Radar Signal Processing | Industrial Motion Controller |
|---|---|
Use Scenario: Real-time FFT buffer between ADC capture and DSP execution units in phased-array radar. IC Role / Device Role / Timing Role: Dual-port RAM acts as ping-pong memory - one port feeds incoming samples while the other serves processed outputs. Use Value: 45 ns tRC enables ≥22 MHz sustained data throughput; on-chip BUSY arbitration prevents sample corruption during port switching. |
Use Scenario: Coordinating position loop updates between FPGA-based trajectory planner and ARM-based HMI in CNC machine tools. IC Role / Device Role / Timing Role: Shared memory interface with semaphore-controlled access to coordinate axis command queues and status registers. Use Value: Hardware semaphore logic eliminates software polling overhead; 1 µA standby current preserves position data during emergency stop holdover. |
| Avionics Display System | Power Substation RTU |
Use Scenario: Frame buffer sharing between graphics processor and flight management computer in integrated cockpit displays. IC Role / Device Role / Timing Role: Left port writes rendered frames; right port reads for display scan-out - both operating asynchronously. Use Value: True dual-port operation ensures zero-frame-drop rendering; 84-pin PLCC supports conformal coating and vibration-resistant mounting. |
Use Scenario: Storing fault event logs and protection relay settings in hardened remote terminal units deployed in high-EMI substations. IC Role / Device Role / Timing Role: Nonvolatile shadow memory backed by 2V battery; retains critical trip records during AC mains failure. Use Value: 2V data retention guarantees ≥10-year log integrity; industrial temp rating ensures reliability at 70°C ambient cabinet temperatures. |
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-45AXC | 45 ns tRC, 5V supply, 84-pin TQFP - no battery retention; higher ISB3 (5 µA) | Lacks 2V data retention; requires external backup circuitry for holdover | Select when footprint compatibility with modern TQFP layouts is prioritized over battery backup |
| IDT70V24L25PFGI | 25 ns tRC, 3.3V supply, 100-pin TQFP - lower power but incompatible voltage and pinout | Requires level-shifting and PCB redesign; unsuitable for drop-in replacement | Choose only for new designs targeting higher speed and lower voltage operation |
Compared with CY7C024AV-45AXC and IDT70V24L25PFGI, the 7024L45J uniquely delivers 2V data retention in a legacy 84-pin PLCC package - making it irreplaceable for maintaining functional continuity in field-deployed industrial and defense systems requiring long-term data integrity without redesign.
Availability
7024L45J is available at Aetrix Electronics and suitable for radar signal processing, industrial motion control, avionics display systems, and power substation RTUs requiring stable component supply across extended product lifecycles.
Supply support for 7024L45J 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 since 2019.
The 7024L45J belongs to IDT's legacy high-speed dual-port SRAM product line, designed specifically for deterministic inter-processor communication in real-time embedded systems where latency, data integrity, and long-term reliability are critical.
FAQ
What is the maximum access speed of the 7024L45J?
The 7024L45J has a maximum read cycle time (tRC) of 45 ns, corresponding to a theoretical peak bandwidth of ~22.2 MHz per port. This timing is guaranteed across the full industrial temperature range (–40°C to +85°C) and 5.0 V ±10% supply, making it suitable for demanding real-time buffering applications where deterministic latency is essential.
Does the 7024L45J support battery backup operation?
Yes, the 7024L45J supports battery backup operation with guaranteed data retention at VCC = 2.0 V. In this mode, typical data retention current is 100 µA, enabling multi-year retention when paired with standard lithium backup cells - a key feature distinguishing the "L" variant from the "S" version.
How does the master/slave (M/S) configuration work on the 7024L45J?
When M/S = HIGH, the 7024L45J operates as a master: BUSYL/BUSYR become output flags indicating arbitration conflict. When M/S = LOW, it operates as a slave: BUSYL/BUSYR become inputs accepting BUSY signals from a master device - enabling scalable multi-device 32-bit+ memory systems without external logic.
What package type is used for the 7024L45J?
The 7024L45J uses an 84-pin Plastic Leaded Chip Carrier (PLCC) package, designated PLG84. Its dimensions are approximately 1.15 in × 1.15 in × 0.17 in, with gull-wing leads compatible with standard surface-mount reflow processes and socket-based field upgrades.
Can the 7024L45J perform simultaneous reads from both ports to the same memory location?
Yes, the 7024L45J features true dual-ported memory cells that allow completely independent, simultaneous reads from both left and right ports to the exact same address - with no timing penalty or arbitration delay. This capability is fundamental to its use in lock-free inter-processor data exchange.
7024L45J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 84-LCC (J-Lead)
- Packaging:
- Tube
- 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:
- 45ns
- Access Time:
- 45 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 84-PLCC (29.31x29.31)
7024L45J FAQ
1.How can I place an order for 7024L45J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7024L45J 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 7024L45J reliable?
The price and inventory of 7024L45J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7024L45J is usually 5 days.
3.What payment methods are accepted for 7024L45J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7024L45J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7024L45J?
7024L45J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7024L45J 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 7024L45J?
For technical support, including 7024L45J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7024L45J requirements.
6.How does Aetrix verify that 7024L45J is sourced from the original manufacturer or authorized distributors?
All 7024L45J 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 7024L45J meets industry standards.
7.What is the process for return or replacement of 7024L45J?
All 7024L45J units undergo pre-shipment inspection (PSI). If there is an issue with 7024L45J, 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 7024L45J part is unused and in its original packaging.
Return procedure for 7024L45J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7024L45J Tags
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AT24C02C-XHM-T
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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