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Renesas 7008L15PFG
- Part No.:
- 7008L15PFG
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7008L15PFG.pdf
- Description:
- IC SRAM 512KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,524
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Product details
Overview
IDT7008L15PFG from Integrated Device Technology (IDT) is a high-speed 64K × 8 true dual-port static RAM with independent left/right ports, 15 ns maximum read cycle time, TTL-compatible 5V ±10% operation, and integrated semaphore/arbitration logic for inter-processor communication in real-time embedded systems.
For engineers reviewing the IDT7008L15PFG datasheet, IDT7008L15PFG pinout, IDT7008L15PFG application, or IDT7008L15PFG equivalent, key selection criteria include port-to-port contention handling via BUSY flag timing (tBDD ≤ 15 ns), low-power standby current (1 µA typ.), master/slave cascading capability, and 100-pin TQFP packaging for space-constrained industrial control designs.
Technical Context
The IDT7008L15PFG implements fully asynchronous dual-port access with separate address, data, and control lines per port-enabling simultaneous reads/writes to any memory location without bus turnaround delay. Its on-chip arbitration logic resolves port conflicts using push-pull BUSY flags and M/S-selectable master/slave configuration.
It supports two distinct memory access modes: standard RAM access (CE = VIL, SEM = VIH) and semaphore register access (CE = VIH, SEM = VIL), with eight dedicated semaphore flags addressed by A0–A2 and written via I/O0. All I/Os are bidirectional and TTL-compatible.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 8 bits (512 Kbit total); enables 16-bit+ word systems via master/slave cascading |
| Access Time (tAA) | 15 ns max (commercial grade); guarantees deterministic latency for real-time interrupt response |
| Supply Voltage | 5.0 V ±10%; compatible with legacy 5V TTL logic families without level-shifting |
| Standby Current (ISB3) | 0.2 mA typical (full CMOS standby); reduces power in idle multi-processor nodes |
| Operating Temperature | 0°C to +70°C (commercial); validated for stable operation in office/industrial ambient environments |
| Package | 100-pin TQFP (14 mm × 14 mm × 1.4 mm); RoHS-compliant, surface-mount compatible |
| BUSY Timing (tBDD) | 15 ns max (M/S = VIH); ensures valid read data after port-to-port write contention resolution |
Pinout & Package
Package: 100-pin Thin Quad Flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A15L | Left port address inputs | 16-bit address bus for left-side memory access; supports full 64K addressing |
| A0R–A15R | Right port address inputs | Independent 16-bit address bus enabling concurrent access from second processor or DMA engine |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; tri-stated when OEL = VIH or CE0L/CE1L = VIH |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit data path; isolated from left port-no shared bus contention |
| CE0L, CE1L | Left port chip enables | Dual enables allow depth expansion without external logic; CE1L enables power-down mode |
| CE0R, CE1R | Right port chip enables | Independent enable control per port; supports selective port sleep for dynamic power management |
| R/WL, R/WR | Read/write controls | Active-low signals defining direction of data flow per port; no bus turnaround required |
| OEL, OER | Output enables | Gate output drivers independently; allows one port to drive while other remains high-Z |
| SEML, SEMR | Semaphore enables | Enable access to 8 semaphore registers (A0–A2) for inter-processor synchronization |
| INTL, INTR | Interrupt flags | Open-drain compatible outputs (push-pull); assert on mailbox writes to FFFE/FFFF addresses |
| BUSYL, BUSYR | Busy flags | Push-pull outputs (master) or inputs (slave); resolve port-to-port write collisions in hardware |
| M/S | Master/slave select | VIL configures as slave (BUSY input); VIH configures as master (BUSY output) |
| VCC, GND | Power/ground | Multiple VCC/GND pins ensure low-noise operation; all must be connected per datasheet note |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port architecture | Simultaneous independent read/write to same memory location-eliminates software arbitration overhead |
| Hardware semaphore logic | Eight dedicated flags accessible via A0–A2; enables lock-free resource sharing between processors |
| Master/slave cascading | Single M/S pin configures device as master (BUSY output) or slave (BUSY input) for 16-bit+ bus expansion |
| Low-power standby modes | ISB3 = 0.2 mA typ. (full CMOS standby); reduces system power during idle cycles without losing state |
| Asynchronous port operation | No clock required-simplifies timing design in mixed-signal or legacy 5V systems with variable bus speeds |
Applications
| Industrial PLC Controller | Real-Time Data Acquisition System |
|---|---|
Use Scenario: Two microcontrollers share sensor data and control commands via shared memory in a deterministic motion control loop. IC Role / Device Role / Timing Role: Dual-port SRAM acts as synchronized message buffer with hardware BUSY arbitration ensuring no race conditions during concurrent access. Use Value: Eliminates need for external arbitration logic and reduces worst-case interrupt latency by 12 ns vs. software semaphores. | Use Scenario: High-speed ADC streams samples to one port while DSP processes and stores results to the same memory array via second port. IC Role / Device Role / Timing Role: Provides zero-wait-state buffering between mismatched-speed peripherals-ADC runs at 10 MHz, DSP at 25 MHz. Use Value: Enables continuous sampling without FIFO overflow; tAA = 15 ns ensures sub-67 ns data handoff latency. |
| Multi-Core Communication Bridge | Legacy Bus Interface Adapter |
Use Scenario: ARM Cortex-M7 and RISC-V core exchange status flags and command packets in an automotive ECU with ASIL-B compliance requirements. IC Role / Device Role / Timing Role: Acts as fault-tolerant inter-core mailbox using hardware semaphore registers (A0–A2) and interrupt flags (INTL/INTR). Use Value: Reduces inter-core handshake time by 40% vs. spinlock-based software solutions; supports deterministic MISRA-C verification. | Use Scenario: Bridges ISA bus (8-bit, 8 MHz) to PCI Express endpoint in industrial PC-based test equipment requiring backward compatibility. IC Role / Device Role / Timing Role: Serves as protocol-transparent data staging buffer-left port interfaces ISA, right port connects to PCIe bridge controller. Use Value: Absorbs timing skew between buses; 5V TTL compatibility avoids level translators, reducing BOM cost by $0.82/unit. |
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; 3.3V supply only; no built-in semaphore logic | Requires external logic for inter-processor sync; suited for 3.3V-only systems with narrower data paths | Select when migrating to lower-voltage design and external arbitration is acceptable |
| AS7C362000B-15TCN | 256K × 8 organization; 15 ns access; 3.3V supply; no BUSY/SEM/INT hardware support | Larger memory but lacks hardware coherency features-requires software-managed semaphores | Select when memory density >64K is required and real-time arbitration is handled in firmware |
Compared with CY7C028V-15AXC and AS7C362000B-15TCN, the IDT7008L15PFG uniquely integrates BUSY arbitration, semaphore registers, and interrupt flags in a 5V-compatible 100-pin TQFP-making it the only drop-in solution for legacy industrial systems requiring deterministic, hardware-enforced dual-processor coordination without voltage translation or external logic.
Availability
IDT7008L15PFG is available at Aetrix Electronics and suitable for industrial PLC controllers, real-time data acquisition systems, multi-core communication bridges, and legacy bus interface adapters requiring stable component supply across extended production lifecycles.
Supply support for IDT7008L15PFG 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
Integrated Device Technology (IDT) was a fabless semiconductor company specializing in timing, memory interface, RF, and sensor signal conditioning ICs before its acquisition by Renesas Electronics in 2019.
The IDT7008 product line was designed specifically for deterministic inter-processor communication in real-time embedded systems-emphasizing hardware arbitration, low-latency dual-port access, and 5V TTL compatibility for industrial and telecom infrastructure.
FAQ
What is the maximum operating frequency supported by the IDT7008L15PFG?
The IDT7008L15PFG does not operate on a clock signal-it is a fully asynchronous static RAM. Its performance is specified by access times: tAA, tACE, and tAOE are all rated at 15 ns maximum (commercial grade), enabling reliable operation in systems where address/control signals toggle at up to ~67 MHz effective rate. The device requires no external clock and derives timing solely from input signal transitions.
How does the BUSY arbitration logic function in the IDT7008L15PFG?
In the IDT7008L15PFG, BUSY arbitration resolves port-to-port write conflicts. When configured as master (M/S = VIH), BUSYL/BUSYR are outputs that go LOW if the opposite port initiates a write to the same address. This inhibits the local write until BUSY returns HIGH. As slave (M/S = VIL), BUSY pins become inputs-allowing external master to control access. The tAPS (5 ns) setup time ensures deterministic priority assignment.
Can the IDT7008L15PFG be used in a 3.3V system?
No-the IDT7008L15PFG is specified only for 5.0 V ±10% operation (4.5 V to 5.5 V). Its input thresholds (VIH = 2.2 V min, VIL = 0.8 V max) and output drive levels (VOH = 2.4 V min at –4 mA) are TTL-compatible and not guaranteed at 3.3V. Using it in a 3.3V system risks incorrect logic interpretation and violates absolute maximum ratings for VTERM.
What is the purpose of the SEM pins on the IDT7008L15PFG?
The SEML and SEMR pins on the IDT7008L15PFG enable access to eight dedicated hardware semaphore registers. When CE = VIH and SEM = VIL, the device enters semaphore mode-addressed by A0–A2-and I/O0 writes the flag value while all I/Os (I/O0–I/O7) read it. This provides atomic, glitch-free inter-processor signaling without software intervention or memory-mapped register overhead.
Does the IDT7008L15PFG support depth expansion without external logic?
Yes-the IDT7008L15PFG supports depth expansion using its dual chip-enable inputs (CE0L/CE1L and CE0R/CE1R). By tying CE1L and CE1R to VCC and controlling CE0L/CE0R with decoded higher-order address bits, multiple devices can be stacked to increase memory depth without additional gates or CPLDs-reducing board area and signal integrity complexity.
7008L15PFG 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:
- 512Kbit
- Memory Organization:
- 64K 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:
- 100-TQFP (14x14)
7008L15PFG FAQ
1.How can I place an order for 7008L15PFG through Aetrix?
Please submit a Request for Quotation (RFQ) for 7008L15PFG 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 7008L15PFG reliable?
The price and inventory of 7008L15PFG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7008L15PFG is usually 5 days.
3.What payment methods are accepted for 7008L15PFG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7008L15PFG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7008L15PFG?
7008L15PFG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7008L15PFG 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 7008L15PFG?
For technical support, including 7008L15PFG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7008L15PFG requirements.
6.How does Aetrix verify that 7008L15PFG is sourced from the original manufacturer or authorized distributors?
All 7008L15PFG 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 7008L15PFG meets industry standards.
7.What is the process for return or replacement of 7008L15PFG?
All 7008L15PFG units undergo pre-shipment inspection (PSI). If there is an issue with 7008L15PFG, 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 7008L15PFG part is unused and in its original packaging.
Return procedure for 7008L15PFG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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