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Renesas 7007L15PF8
- Part No.:
- 7007L15PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 80-LQFP
- Datasheet:
-
7007L15PF8.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 80TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,170
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Product details
Overview
7007L15PF8 from IDT (Integrated Device Technology) is a high-speed 32K × 8 dual-port static RAM with true independent left/right ports, 15 ns maximum access time (commercial grade), 5 V ±10% single-supply operation, and integrated hardware semaphore and interrupt logic - used in real-time interprocessor communication systems requiring deterministic arbitration.
For engineers reviewing the 7007L15PF8 datasheet, 7007L15PF8 pinout, 7007L15PF8 application, or 7007L15PF8 equivalent, key selection criteria include port-to-port contention resolution timing (tBDD ≤ 18 ns), BUSY flag behavior under M/S = VIH configuration, and compatibility with 68-pin PLCC footprint for legacy industrial control backplanes.
Technical Context
The 7007L15PF8 implements fully asynchronous dual-port architecture with separate address, data, and control buses per port (A0L–A14L/I/O0L–I/O7L/R/WL/CEL/OEL on left; A0R–A14R/I/O0R–I/O7R/R/WR/CER/OER on right), enabling simultaneous read/write to same memory location only when BUSY arbitration permits. Its on-chip arbitration logic resolves port conflicts via M/S-selectable master/slave mode and push-pull BUSY outputs.
It supports two distinct memory access modes: RAM mode (CE = VIL, SEM = VIH) and semaphore mode (CE = VIH, SEM = VIL), with dedicated 3-bit address decoding (A0–A2) for eight semaphore flags. Interrupt signaling uses fixed addresses 7FFEH (INTL set/clear) and 7FFFH (INTR set/clear), requiring no external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 32K × 8 bits (256 Kbit total); enables 8-bit parallel data exchange between two independent bus masters |
| Access Time (tAA) | 15 ns max (commercial temp range); guarantees deterministic latency for hard real-time inter-processor messaging |
| Supply Voltage | 4.5 V to 5.5 V; TTL-compatible single 5 V supply eliminates need for voltage translation in legacy 5 V systems |
| Power Consumption | Active: 850 mW typ.; Standby: 1 mW typ. - supports low-duty-cycle polling in power-sensitive embedded controllers |
| Operating Temperature | 0 °C to +70 °C (commercial grade); validated for use in non-extended-temperature industrial enclosures |
| Package | 68-pin Plastic Leaded Chip Carrier (PLCC); surface-mount compatible with standard reflow profiles and repair-friendly socketing |
| Arbitration Logic | Hardware-implemented semaphore and BUSY flag with tAPS = 5 ns setup - removes software arbitration overhead in multi-CPU designs |
Pinout & Package
68-pin PLCC package (body size ≈ 24.1 mm × 24.1 mm × 4.3 mm), lead pitch 1.27 mm, JEDEC MO-047 compliant. Pin 1 marked by corner notch; pin numbering counterclockwise from top-left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pins 12, 13, 20, 39, 68) | Power Supply | Five dedicated 5 V supply pins reduce IR drop and improve noise immunity across high-speed I/O switching |
| GND (Pins 11, 22, 34, 43, 52) | Ground Reference | Five ground pins provide low-inductance return paths essential for stable dual-port timing margins |
| CEL / CER | Chip Enable (Left/Right) | Independent port enable; HIGH disables port and forces standby current (ISB1 ≤ 60 mA) |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low write strobe; asserts write cycle only when CE is LOW and R/W is LOW |
| OEL / OER | Output Enable (Left/Right) | Controls tri-state of I/O pins; allows shared bus operation without external transceivers |
| A0L–A14L / A0R–A14R | Address Inputs (Left/Right) | 15-bit addressing per port; supports full 32K × 8 memory map independently on each side |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (Left/Right) | Bidirectional 8-bit data bus per port; electrically isolated to prevent cross-port coupling |
| SEML / SEMR | Semaphore Enable (Left/Right) | Activates semaphore register access (A0–A2 decoded) when CE = VIH and SEM = VIL |
| INTL / INTR | Interrupt Flag Output (Left/Right) | Open-collector compatible (push-pull); signals mailbox write at 7FFEH/7FFFH to partner processor |
| BUSYL / BUSYR | Busy Flag (Left/Right) | Push-pull output (MASTER) or input (SLAVE); blocks writes during port contention with tBDD ≤ 18 ns recovery |
| M/S | Master/Slave Select | HIGH configures as MASTER (BUSY outputs); LOW configures as SLAVE (BUSY inputs); enables cascaded 16-bit+ systems |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous read/write to same memory location only when BUSY arbitration permits - eliminates software locks in real-time IPC |
| Hardware Semaphore Logic | Eight dedicated semaphores addressed by A0–A2; accessed via CE = VIH/SEM = VIL - removes need for external arbitration ICs |
| Configurable Master/Slave Mode | M/S pin selects push-pull BUSY output (MASTER) or BUSY input (SLAVE) - supports scalable multi-device memory expansion |
| Dedicated Interrupt Mailboxes | Fixed addresses 7FFEH (INTL) and 7FFFH (INTR) act as hardware-triggered message flags - reduces ISR latency vs. polled status registers |
| Low-Power Standby | 1 mW typical standby power (ISB3) with all inputs at CMOS levels - extends uptime in battery-backed controller applications |
Applications
| Industrial PLC Backplane | Avionics Data Concentrator |
|---|---|
Use Scenario: Two independent CPU modules (e.g., safety-critical and non-safety partitions) share sensor data and control commands via a common memory space on a ruggedized backplane. IC Role / Device Role / Timing Role: 7007L15PF8 serves as deterministic interprocessor communication buffer with hardware-enforced write arbitration and BUSY flag synchronization. Use Value: Eliminates race conditions during concurrent access; tBDD ≤ 18 ns ensures predictable worst-case response for SIL-2 certified logic. | Use Scenario: ARINC 429 interface module and flight management computer exchange telemetry and command packets using mailbox-style messaging. IC Role / Device Role / Timing Role: 7007L15PF8 provides dual-port SRAM with interrupt-driven mailbox (7FFFH) and semaphore-controlled resource locking. Use Value: Reduces software overhead by 40% vs. software-managed queues; INTL/INTR flags trigger immediate context switch without polling. |
| Medical Imaging Subsystem | Test Equipment Pattern Generator |
Use Scenario: FPGA-based image acquisition engine writes raw frame buffers while DSP processor reads and processes prior frames - requiring zero-wait-state handoff. IC Role / Device Role / Timing Role: 7007L15PF8 acts as high-bandwidth, low-latency frame buffer with independent 15 ns access per port. Use Value: Sustains 66.7 MHz effective throughput (15 ns cycle) across both ports - meets real-time DICOM streaming requirements. | Use Scenario: Automated test system uses microcontroller to load stimulus patterns into memory while pattern generator ASIC reads and outputs sequences at 50 MHz. IC Role / Device Role / Timing Role: 7007L15PF8 functions as synchronized pattern store with M/S-configured master/slave arbitration for seamless reload. Use Value: Enables glitch-free pattern updates mid-sequence using BUSY-flag handshake - prevents waveform corruption during reload. |
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-15AXC | 15 ns access, 32K × 8, 80-pin TQFP; no integrated semaphore logic; requires external arbitration circuitry | Lacks hardware semaphore and interrupt mailboxes - increases BOM count and PCB area for equivalent functionality | Select when footprint flexibility (TQFP) outweighs need for on-chip arbitration; verify external logic meets tBDD < 20 ns |
| IDT70V25L15PF | 15 ns, 32K × 8, 68-pin PLCC; 3.3 V core (5 V tolerant I/O); lower active power (450 mW typ.) but requires level-shifting in pure 5 V systems | Not pin-compatible due to different VCC/GND pin mapping; incompatible with legacy 5 V-only backplanes | Choose for new 3.3 V designs prioritizing power efficiency; not suitable as drop-in replacement for 7007L15PF8 |
Compared with CY7C024AV-15AXC and IDT70V25L15PF, the 7007L15PF8 uniquely integrates semaphore, interrupt, and BUSY arbitration in a 5 V, 68-pin PLCC package - delivering lowest system-level component count for legacy industrial interprocessor links.
Availability
7007L15PF8 is available at Aetrix Electronics and suitable for industrial PLC backplanes, avionics data concentrators, medical imaging subsystems, and automated test equipment requiring stable component supply with long-term lifecycle support.
Supply support for 7007L15PF8 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) was a fabless semiconductor company specializing in timing, memory interface, and RF solutions before its acquisition by Renesas Electronics in 2019.
The IDT7007 family was designed specifically for deterministic interprocessor communication in real-time embedded systems - emphasizing hardware arbitration, low-latency dual-port access, and robust 5 V operation for industrial and aerospace applications.
FAQ
What is the maximum operating temperature range for the 7007L15PF8?
The 7007L15PF8 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 ranges - those require variants like 7007L20PF8 or 7007L25PF8 explicitly specified for extended temperature grades.
Does the 7007L15PF8 support true simultaneous read/write to the same memory address?
No - the 7007L15PF8 does not permit unrestricted simultaneous access to identical addresses. When both ports attempt concurrent write to the same location, hardware BUSY arbitration (via M/S configuration and tAPS timing) blocks one port until the other completes, ensuring data coherency. Simultaneous reads to the same address are allowed.
How is semaphore functionality implemented in the 7007L15PF8?
Semaphore functionality in the 7007L15PF8 is implemented via eight dedicated flags accessed when CE = VIH and SEM = VIL. Address lines A0–A2 select the semaphore; I/O0 writes the flag state and all I/O lines (I/O0–I/O7) read it. This operates independently of main RAM access and requires no external logic.
Can the 7007L15PF8 be used in a 16-bit data bus configuration?
Yes - the 7007L15PF8 supports 16-bit expansion using Master/Slave cascading. One device is configured as MASTER (M/S = H) and another as SLAVE (M/S = L); BUSY outputs from MASTER feed BUSY inputs on SLAVE, enabling coordinated access across two 8-bit devices to form a 16-bit wide memory interface.
What are the power supply requirements for reliable operation of the 7007L15PF8?
The 7007L15PF8 requires a single 5 V supply with tolerance of ±10% (4.5 V to 5.5 V). Five VCC and five GND pins must be individually decoupled with 0.1 µF ceramic capacitors near the package; failure to distribute power/ground connections increases timing skew and may cause BUSY arbitration failures.
7007L15PF8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 80-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 256Kbit
- Memory Organization:
- 32K 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:
- 80-TQFP (14x14)
7007L15PF8 FAQ
1.How can I place an order for 7007L15PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7007L15PF8 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 7007L15PF8 reliable?
The price and inventory of 7007L15PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7007L15PF8 is usually 5 days.
3.What payment methods are accepted for 7007L15PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7007L15PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7007L15PF8?
7007L15PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7007L15PF8 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 7007L15PF8?
For technical support, including 7007L15PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7007L15PF8 requirements.
6.How does Aetrix verify that 7007L15PF8 is sourced from the original manufacturer or authorized distributors?
All 7007L15PF8 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 7007L15PF8 meets industry standards.
7.What is the process for return or replacement of 7007L15PF8?
All 7007L15PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7007L15PF8, 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 7007L15PF8 part is unused and in its original packaging.
Return procedure for 7007L15PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7007L15PF8 Tags
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