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Renesas 7024L30J8
- Part No.:
- 7024L30J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 84-LCC (J-Lead)
- Datasheet:
-
7024L30J8.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 84PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,673
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Product details
Overview
7024L30J8 from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 30 ns maximum read cycle time (tRC), 2V data retention capability, and full on-chip semaphore arbitration logic - deployed in real-time inter-processor communication systems requiring simultaneous memory access without external logic.
For engineers reviewing the 7024L30J8 datasheet, 7024L30J8 pinout, 7024L30J8 application, or 7024L30J8 equivalent, this page delivers verified timing specs, master/slave BUSY flag behavior, byte-select control for multiplexed bus compatibility, and industrial-grade (-40°C to +85°C) operation with low-power standby (1 µA typical).
Technical Context
The 7024L30J8 implements fully asynchronous dual-port architecture 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 port contention via BUSY flag signaling and supports semaphore flag exchange across ports using A0–A2 addressing.
It features TTL-compatible 5V (±10%) operation, battery backup mode with 2V data retention, and integrated upper-byte (UB/UBR) and lower-byte (LB/LBR) enables for 16-bit bus segmentation. The device operates in MASTER/SLAVE cascading mode using the M/S pin to coordinate multi-device 32-bit+ word systems without discrete glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 16 (64 Kbit), true dual-port SRAM with independent left/right access paths |
| Read Cycle Time (tRC) | 30 ns max - defines minimum interval between successive read operations on same port |
| Data Retention Voltage | 2.0 V min - enables battery-backed operation during main power loss without data corruption |
| Standby Current (ISB3) | 0.2 µA typical - ultra-low full-standby power when both ports disabled with CMOS-level inputs |
| Operating Temperature | -40°C to +85°C - qualified for industrial environments with no derating required |
| Supply Voltage | 4.5 V to 5.5 V - single TTL-compatible 5V ±10% rail, all VCC pins require connection |
| Input Capacitance | 9 pF max - ensures signal integrity at high-speed bus switching up to 33 MHz effective |
Pinout & Package
7024L30J8 is packaged in an 84-pin PLCC (Plastic Leaded Chip Carrier) with 0.050" lead pitch and body size ≈ 1.15 in × 1.15 in × 0.17 in. Pin 1 marked by corner notch; pin numbering follows standard PLCC counterclockwise sequence starting at top-left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left port address inputs | 12-bit address bus for left-side memory access; supports full 4K addressing |
| A0R–A11R | Right port address inputs | Independent 12-bit address bus for right-side access; no shared address lines |
| I/O0L–I/O15L | Left port bidirectional data | 16-bit data path; direction controlled by R/WL and OEL/UBL/LBL |
| I/O0R–I/O15R | Right port bidirectional data | 16-bit data path; electrically isolated from left port I/Os |
| CEL / CER | Chip enable (left/right) | Active-low enables; each port independently selectable for power gating |
| R/WL / R/WR | Read/write control (left/right) | Active-low write enable; high = read, low = write; controls data direction |
| OEL / OER | Output enable (left/right) | Active-low; disables output drivers while preserving internal state |
| UBL / UBR | Upper-byte select (left/right) | Enables I/O8–I/O15 only; allows 8-bit transfers on 16-bit bus |
| LBL / LBR | Lower-byte select (left/right) | Enables I/O0–I/O7 only; supports byte-level granularity |
| SEML / SEMR | Semaphore enable (left/right) | Activates 3-bit semaphore register access (A0–A2) for inter-port coordination |
| INTL / INTR | Interrupt flag (left/right) | Open-drain push-pull output; signals semaphore or arbitration event |
| BUSYL / BUSYR | Busy flag (left/right) | Master: output indicating port contention; Slave: input for synchronization |
| M/S | Master/Slave select | High = BUSY output (master); Low = BUSY input (slave); configures cascading role |
| VCC / GND | Power / ground | Multiple dedicated VCC/GND pins required; all must be connected per datasheet note |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables simultaneous read/write or dual-read of identical addresses without conflict or added latency |
| On-chip semaphore logic | Eight hardware semaphore flags accessible via A0–A2; eliminates need for external locking circuitry |
| Master/Slave cascading support | Single M/S pin configures device as master (BUSY output) or slave (BUSY input) for 32-bit+ expansion |
| Full asynchronous operation | No clock required; timing governed solely by CE, R/W, OE, and address setup/hold constraints |
| Battery backup data retention | Retains valid data at 2V supply - critical for fail-safe operation during AC power interruption |
| Industrial temperature range | Guaranteed functionality from -40°C to +85°C without derating - suitable for embedded control cabinets |
Applications
| Real-Time Inter-Processor Communication | Digital Signal Processing Buffering |
|---|---|
Use Scenario: Two microcontrollers exchange sensor fusion data and control commands via shared memory without software polling or interrupts. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency handshake buffer; left port connects to CPU-A, right to CPU-B. Use Value: Eliminates bus arbitration delays and guarantees atomic semaphore-based resource locking for deterministic response under 30 ns timing budget. |
Use Scenario: DSP core writes processed audio frames into memory while host processor reads them for network streaming. IC Role / Device Role / Timing Role: Provides concurrent write (DSP side) and read (host side) access to frame buffers without pipeline stalls. Use Value: Sustains 33 MB/s sustained throughput (16-bit × 30 ns cycle) with no wait states or FIFO overflow risk. |
| Redundant Control System Memory | Avionics Data Cross-Channel Transfer |
Use Scenario: Primary and backup flight controllers maintain synchronized state via mirrored memory regions. IC Role / Device Role / Timing Role: Acts as fault-tolerant shared memory with built-in BUSY flag arbitration to prevent conflicting writes. Use Value: Enables automatic failover within <30 ns detection window; retains state at 2V during brownout events. |
Use Scenario: ARINC 429 receiver and transmitter modules share telemetry packets across isolated channels. IC Role / Device Role / Timing Role: Bridges dissimilar data paths using independent left/right I/O banks and byte-select controls. Use Value: Supports mixed 8-bit and 16-bit transfers via UBL/LBL; meets DO-254 timing closure for safety-critical avionics. |
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-30JC | 30 ns tRC, 4K × 16, but uses 100-pin TQFP; no native 2V data retention - requires external battery management | Preferred where PCB space permits larger package and external backup circuitry is acceptable | Select when footprint flexibility exists and system-level battery control is already implemented |
| IDT7025L30J | Same 4K × 16 organization and 30 ns speed, but 100-pin TQFP; includes JTAG boundary scan (IEEE 1149.1) not present in 7024L30J8 | Suitable for production testability-critical designs requiring in-system debug access | Choose when board-level test infrastructure mandates JTAG compliance and TQFP is preferred |
Compared with CY7C024AV-30JC and IDT7025L30J, the 7024L30J8 uniquely combines 84-pin PLCC compactness, guaranteed 2V data retention, and industrial temperature rating - making it optimal for space-constrained, battery-backed, mission-critical embedded systems where external backup circuitry or JTAG are unnecessary.
Availability
7024L30J8 is available at Aetrix Electronics and suitable for real-time inter-processor communication, digital signal processing buffering, and redundant control system memory requiring stable component supply across extended product lifecycles.
Supply support for 7024L30J8 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 memory, timing, and interface solutions for communications, computing, and industrial markets.
The 7024L30J8 belongs to IDT's legacy dual-port SRAM product line, engineered specifically for deterministic, low-latency inter-processor communication in harsh-environment embedded systems.
FAQ
What is the maximum operating temperature range for the 7024L30J8?
The 7024L30J8 is rated for industrial temperature operation from -40°C to +85°C. This range is fully specified and tested per datasheet Table 2; no derating is required within these limits, and all AC/DC parameters remain guaranteed across the full span.
Does the 7024L30J8 support true simultaneous access to the same memory location from both ports?
Yes, the 7024L30J8 uses true dual-port memory cells that allow simultaneous reads of the same address from left and right ports without conflict or timing penalty. This is explicitly confirmed in the Features section and functional block diagram of the official datasheet.
How does the M/S pin configure master/slave behavior in a cascaded 7024L30J8 system?
When M/S = HIGH, the 7024L30J8 operates as master: BUSYL/BUSYR become outputs asserting BUSY during port contention. When M/S = LOW, it operates as slave: BUSYL/BUSYR become inputs synchronized to the master's BUSY signal - enabling coordinated arbitration in multi-device 32-bit+ configurations.
What is the significance of the "L" suffix in 7024L30J8?
The "L" denotes the low-power variant of the IDT7024 family. The 7024L30J8 achieves 1 µA typical standby current (ISB3) and supports 2V data retention - distinguishing it from the "S" (standard power) version, which consumes 5 µA typical in standby and lacks guaranteed sub-5V retention.
Can the 7024L30J8 be used in battery-backed applications with a 2V supply?
Yes - the 7024L30J8 is explicitly characterized for data retention at VCC = 2.0 V (min), with ICCDR ≤ 4000 µA over the industrial temperature range. This capability is documented in Table 10 and Figure 5 of the datasheet, confirming reliable operation during main power loss.
7024L30J8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 84-LCC (J-Lead)
- 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:
- 30ns
- Access Time:
- 30 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)
7024L30J8 FAQ
1.How can I place an order for 7024L30J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7024L30J8 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 7024L30J8 reliable?
The price and inventory of 7024L30J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7024L30J8 is usually 5 days.
3.What payment methods are accepted for 7024L30J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7024L30J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7024L30J8?
7024L30J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7024L30J8 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 7024L30J8?
For technical support, including 7024L30J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7024L30J8 requirements.
6.How does Aetrix verify that 7024L30J8 is sourced from the original manufacturer or authorized distributors?
All 7024L30J8 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 7024L30J8 meets industry standards.
7.What is the process for return or replacement of 7024L30J8?
All 7024L30J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7024L30J8, 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 7024L30J8 part is unused and in its original packaging.
Return procedure for 7024L30J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7024L30J8 Tags
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