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Renesas 7005L15J8
- Part No.:
- 7005L15J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
7005L15J8.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,826
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Product details
Overview
7005L15J8 from IDT is a high-speed 8K × 8 dual-port static RAM with true independent left/right ports, 15 ns maximum read cycle time (commercial grade), 5 V ±10% single-supply operation, and integrated hardware semaphore/arbitration logic for concurrent access coordination in real-time embedded systems such as industrial motion controllers.
For engineers reviewing the 7005L15J8 datasheet, 7005L15J8 pinout, 7005L15J8 application, or 7005L15J8 equivalent, key selection criteria include bus contention resolution via BUSY flag arbitration, battery-backed data retention at 2 V, and master/slave cascading support for 16-bit+ memory expansion without external logic.
Technical Context
The 7005L15J8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port-enabling simultaneous read/write operations to the same memory location without corruption. Its on-chip arbitration logic resolves port conflicts using either CE-controlled or address-match–based BUSY assertion with tAPS = 5 ns setup timing.
It supports two distinct operational modes: RAM access (CE = VIL, SEM = VIH) and semaphore register access (CE = VIH, SEM = VIL), where eight semaphore flags are addressed via A0–A2 and read/written through I/O0–I/O7. The M/S pin configures BUSYL/BUSYR as output (master) or input (slave) for system-level coordination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8 bits (64 Kbit), dual-port, true concurrent access |
| Access Time (tRC) | 15 ns max - enables ≤66.7 MHz sustained read cycles in commercial systems |
| Supply Voltage | 5.0 V ±10% - compatible with standard TTL logic families and legacy 5 V backplanes |
| Data Retention | 2 V minimum - supports battery backup with <5 µA standby current (ISB3 = 0.2 mA typ) |
| Operating Temperature | 0°C to +70°C - commercial-grade qualification for non-extended environment applications |
| Package | 64-pin TQFP (PNG64) - 14 mm × 14 mm footprint, surface-mount compatible |
| Power Consumption | Active: 700 mW typ; Standby (full): 500 µW typ - optimized for low-duty-cycle embedded control |
Pinout & Package
64-pin thin quad flatpack (TQFP, package code PNG64), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A12L | Left port address inputs | 13-bit address bus for left-side memory access (8K = 2¹³) |
| A0R–A12R | Right port address inputs | Independent 13-bit address bus enabling simultaneous dual-port addressing |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; tri-stated when OEL = H or CEL = H |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit data path; isolated from left port except via shared memory array |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; deassertion enters low-power standby |
| R/WL / R/WR | Read/write control (left/right) | Low = write, high = read; controls direction of I/O buffers |
| OEL / OER | Output enable (left/right) | Active-low enables output drivers; overrides R/W state for tristate control |
| SEML / SEMR | Semaphore enable (left/right) | Active-low selects semaphore register mode (vs. RAM mode) when CE = VIH |
| BUSYL / BUSYR | Busy flag (left/right) | Push-pull output (master) or input (slave); signals port contention during address match |
| INTL / INTR | Interrupt flag (left/right) | Open-drain capable; set/cleared by writing to dedicated addresses (1FFFh/1FFEh) |
| M/S | Master/slave select | H = BUSY outputs asserted; L = BUSY inputs accepted - enables daisy-chained arbitration |
| VCC / GND | Power supply | Multiple VCC/GND pins distributed for noise reduction and thermal management |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables simultaneous reads/writes to identical addresses without data corruption or wait states |
| Hardware semaphore logic | Eight dedicated flags accessible via A0–A2; eliminates need for external locking circuitry in multi-processor systems |
| Automatic power-down control | CE-driven standby reduces active current to 500 µW typ - extends battery life in backup mode |
| Master/slave cascading capability | M/S pin configures BUSY behavior to support 16-bit+ word systems with no glue logic or timing penalties |
| On-chip arbitration logic | Resolves port conflicts via address-match or CE-timing arbitration with guaranteed tAPS = 5 ns setup |
Applications
| Industrial Motion Controller | Avionics Data Buffer |
|---|---|
Use Scenario: Real-time coordination between FPGA-based trajectory planner and microcontroller-based motor driver in CNC equipment. IC Role / Device Role / Timing Role: Dual-port RAM serves as shared command/status buffer; left port writes motion commands, right port reads execution status with sub-20 ns latency. Use Value: Eliminates software polling and inter-processor handshaking overhead, enabling deterministic 15 ns response to position error interrupts. | Use Scenario: High-integrity data exchange between flight management computer (FMC) and inertial reference unit (IRU) in certified avionics subsystems. IC Role / Device Role / Timing Role: Acts as fault-isolated memory conduit; left port receives sensor telemetry, right port supplies processed navigation vectors with hardware-enforced mutual exclusion. Use Value: Built-in semaphore and BUSY arbitration ensures atomic updates under EMI stress, meeting DO-254 Level A design assurance requirements. |
| Medical Imaging Subsystem | Telecom Line Card Buffer |
Use Scenario: Frame buffering between high-speed ADC digitizer and DSP-based image reconstruction engine in ultrasound systems. IC Role / Device Role / Timing Role: Left port captures raw RF samples at 40 MSPS; right port streams processed B-mode frames to display controller with zero-copy DMA handshake. Use Value: 15 ns tRC and concurrent access eliminate frame-drop risk during real-time beamforming computation bursts. | Use Scenario: Packet buffering in carrier-grade Ethernet line cards handling mixed voice/data traffic with strict jitter constraints. IC Role / Device Role / Timing Role: Dual-port RAM decouples ingress packet assembly (left port) from egress scheduling (right port), synchronized via INTL/INTR signaling. Use Value: Hardware interrupt flags and 2 V data retention ensure graceful failover during hot-swap events without packet loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C028V-15AXC | 16K × 16 organization, 15 ns access, 3.3 V core (5 V tolerant I/O), different pinout (100-pin TQFP) | Higher density and lower voltage; requires level-shifting or redesign for 5 V-only systems | Select when migrating to 3.3 V infrastructure or requiring >64 Kbit capacity |
| IDT70V25L15PF | 8K × 8, 15 ns, 3.3 V supply only, 64-pin TQFP, no 2 V data retention | Lacks battery backup capability; incompatible with 5 V legacy designs | Choose for new 3.3 V designs prioritizing lower power over data retention |
Compared with CY7C028V-15AXC and IDT70V25L15PF, the 7005L15J8 uniquely combines 5 V compatibility, 2 V data retention, and 64-pin TQFP packaging-making it the only drop-in replacement for legacy industrial controllers requiring battery-backed dual-port operation without voltage translation or PCB rework.
Availability
7005L15J8 is available at Aetrix Electronics and suitable for industrial motion control, avionics data buffering, and medical imaging subsystems requiring stable component supply across extended product lifecycles.
Supply support for 7005L15J8 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 IDT7005 family was designed specifically for real-time embedded systems requiring deterministic, contention-free memory sharing between heterogeneous processors or ASICs-targeting industrial automation, defense electronics, and medical instrumentation.
FAQ
What is the maximum operating temperature range for the 7005L15J8?
The 7005L15J8 is rated for commercial temperature operation from 0°C to +70°C. It is not qualified for industrial (–40°C to +85°C) or military temperature ranges; those require suffix variants such as 7005L15J8I or 7005L15J8M explicitly specified in the ordering code.
Does the 7005L15J8 support battery backup operation?
Yes, the 7005L15J8 supports battery backup with data retention down to 2 V (VDR = 2.0 V min), drawing only 500 µW typical standby current (ISB3). This enables nonvolatile storage during main power loss without external capacitors or supercapacitors.
How does the M/S pin affect BUSY signal behavior on the 7005L15J8?
When M/S = H, BUSYL and BUSYR function as push-pull outputs indicating port contention; when M/S = L, they become inputs accepting BUSY assertions from upstream masters. This enables hierarchical arbitration in multi-device configurations without external logic.
Can the 7005L15J8 perform simultaneous read operations on both ports to the same memory address?
Yes, the 7005L15J8 uses true dual-port memory cells that allow concurrent reads from identical addresses on left and right ports with no timing penalty or data corruption-verified by its "True Dual-Ported memory cells" feature and functional block diagram.
What is the purpose of the SEM pin on the 7005L15J8?
The SEM pin (SEML/SEMR) enables semaphore register access mode: when CE = VIH and SEM = VIL, the device routes I/O0–I/O7 to eight internal semaphore flags addressed by A0–A2-providing hardware mutex support without software intervention or external latches.
7005L15J8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-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:
- 8K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 15ns
- Access Time:
- 15 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 68-PLCC (24.21x24.21)
7005L15J8 FAQ
1.How can I place an order for 7005L15J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7005L15J8 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 7005L15J8 reliable?
The price and inventory of 7005L15J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7005L15J8 is usually 5 days.
3.What payment methods are accepted for 7005L15J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7005L15J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7005L15J8?
7005L15J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7005L15J8 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 7005L15J8?
For technical support, including 7005L15J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7005L15J8 requirements.
6.How does Aetrix verify that 7005L15J8 is sourced from the original manufacturer or authorized distributors?
All 7005L15J8 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 7005L15J8 meets industry standards.
7.What is the process for return or replacement of 7005L15J8?
All 7005L15J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7005L15J8, 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 7005L15J8 part is unused and in its original packaging.
Return procedure for 7005L15J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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