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Renesas 7008L20PFGI8
- Part No.:
- 7008L20PFGI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7008L20PFGI8.pdf
- Description:
- IC SRAM 512KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,290
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Product details
Overview
7008L20PFGI8 from IDT (now Renesas) is a high-speed 64K × 8 true dual-port static RAM with independent left/right ports, 20 ns max access time (industrial grade), TTL-compatible 5V ±10% supply, and integrated BUSY arbitration logic for master/slave configurations. It enables simultaneous read/write access to the same memory location and supports 16-bit-or-wider bus expansion in real-time control systems.
For engineers reviewing the 7008L20PFGI8 datasheet, 7008L20PFGI8 pinout, 7008L20PFGI8 application, or 7008L20PFGI8 equivalent, key selection criteria include industrial temperature operation (–40°C to +85°C), dual chip-enable architecture for depth expansion, on-chip semaphore signaling, and push-pull BUSY/INT outputs with no external logic required.
Technical Context
The 7008L20PFGI8 implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via BUSY flag assertion based on address match or CE timing, with tAPS = 5 ns priority setup time ensuring deterministic port-to-port synchronization.
It integrates full hardware semaphore support across eight flags (addressed by A0–A2), accessed via dedicated SEM pins and controlled by CE = VIH/SEM = VIL, enabling lock-free inter-processor communication. The device uses CMOS process technology and features automatic power-down via CE0/CE1, achieving 1 mW typical standby power in low-power mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 8 bits (512 Kbit), two independent addressable ports |
| Access Time (max) | 20 ns - guarantees worst-case read latency for real-time deterministic response |
| Supply Voltage | 5.0 V ±10% - compatible with legacy 5V TTL logic families without level shifting |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded environments including motor drives and PLCs |
| Standby Current (ISB3) | 0.2 mA typ. - ultra-low power retention during idle cycles in battery-backed or energy-sensitive systems |
| Bus Width Expansion | Master/Slave (M/S) pin enables seamless 16-bit+ data bus stacking without glue logic |
| BUSY Logic Type | Push-pull (totem-pole), non-tri-state - eliminates need for external pull-ups in arbitration signaling |
Pinout & Package
7008L20PFGI8 is packaged in a 100-pin TQFP (Thin Quad Flatpack) with 0.5 mm pitch, body size ≈14 mm × 14 mm × 1.4 mm. All VCC and GND pins must be connected per datasheet requirements; NC pins are no-connect and must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE0L / CE0R | Left/Right Port Chip Enable 0 | Primary enable for port access; active-low TTL/CMOS compatible; controls power-down entry |
| R/WL / R/WR | Left/Right Port Read/Write Control | Active-low signal determining direction of data transfer on respective I/O bus |
| OEL / OER | Left/Right Port Output Enable | Active-low control for tri-stating I/O drivers; decoupled from CE for flexible timing |
| A0L–A15L / A0R–A15R | Left/Right Port Address Inputs | 16-bit address bus per port; enables independent random access to any of 65,536 locations |
| I/O0L–I/O7L / I/O0R–I/O7R | Left/Right Port Data I/O | Bidirectional 8-bit data path; supports simultaneous read/write to same location (true dual-port) |
| SEML / SEMR | Left/Right Semaphore Enable | Active-low signal selecting semaphore register access (A0–A2) instead of memory array |
| INTL / INTR | Left/Right Interrupt Flag Output | Open-drain compatible push-pull output; asserted when opposite port writes to FFFE/FFFF |
| BUSYL / BUSYR | Left/Right Busy Flag | Push-pull output (Master) or input (Slave); blocks write if asserted, resolving port contention |
| M/S | Master/Slave Select | VIH configures as Master (BUSY outputs), VIL configures as Slave (BUSY inputs); enables cascading |
| VCC / GND | Power Supply / Ground | Multiple distributed VCC/GND pins ensure stable core voltage and low-noise operation |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables concurrent read/write to identical memory addresses-critical for real-time inter-processor messaging |
| Hardware Semaphore Support | Eight dedicated flags (A0–A2) accessible via SEM pins eliminate software locks and reduce CPU overhead |
| Master/Slave Cascading | M/S pin allows up to 16-bit bus expansion using multiple 7008L20PFGI8 devices without external arbitration logic |
| Low-Power Standby Mode | 1 mW typical ISB3 current enables energy-efficient operation in always-on industrial controllers |
| Industrial Temperature Range | –40°C to +85°C qualification ensures reliability in harsh environments like factory automation and power inverters |
| Push-Pull BUSY/INT Outputs | Eliminates external pull-up resistors and reduces BOM count while improving noise immunity and edge rate |
Applications
| Motor Control System | Industrial PLC Data Exchange |
|---|---|
Use Scenario: Real-time coordination between motion controller (Port A) and safety monitor (Port B) sharing position and status registers. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared mailbox with hardware BUSY arbitration preventing race conditions during simultaneous access. Use Value: Deterministic 20 ns access and tAPS = 5 ns priority setup guarantee sub-microsecond interlock response, meeting SIL-2 timing constraints. |
Use Scenario: Synchronized I/O mapping between main CPU and fieldbus coprocessor in modular PLC backplane. IC Role / Device Role / Timing Role: 7008L20PFGI8 serves as dual-access buffer for cyclic process data exchange with interrupt-driven event notification. Use Value: INTL/INTR flags and FFFE/FFFF mailbox addressing enable zero-latency fault reporting without polling overhead. |
| Redundant Communication Controller | Test Equipment Pattern Memory |
Use Scenario: Hot-swappable primary/backup Ethernet controllers sharing configuration and statistics tables. IC Role / Device Role / Timing Role: True dual-port memory provides atomic read-modify-write capability for failover state tracking via semaphore flags. Use Value: On-chip semaphore logic (A0–A2 addressed) ensures lock-free ownership transfer, eliminating software deadlock risk. |
Use Scenario: High-speed pattern generator storing stimulus/response vectors for semiconductor ATE systems. IC Role / Device Role / Timing Role: 7008L20PFGI8 delivers 20 ns random access to 64K × 8 vector space with independent port timing for parallel load/execute. Use Value: Asynchronous dual-port operation enables continuous waveform streaming from one port while loading next sequence on the other. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1370D-200BZI | 16-bit bus width, 200 MHz QDR interface, 1.8 V core / 3.3 V I/O, 165-ball BGA | Targets high-bandwidth networking ASIC interfaces-not pin-compatible; requires PCB redesign and level-shifting | Select only when migrating to QDR architecture with bandwidth >1.6 Gbps; not drop-in for legacy 5V systems. |
| AS7C362000B-20TIN | 64K × 16 organization, 20 ns access, 3.3 V supply, 100-pin TQFP, no BUSY/semaphore logic | Lacks hardware arbitration and semaphore support; requires external logic for multi-processor sync | Choose for cost-sensitive 3.3 V designs where software-managed locking suffices and bus width is fixed at 16 bits. |
Compared with CY7C1370D-200BZI and AS7C362000B-20TIN, the 7008L20PFGI8 uniquely combines 5V TTL compatibility, integrated BUSY arbitration, and hardware semaphores in a 100-pin TQFP-enabling direct replacement in legacy industrial controllers without layout or firmware changes.
Availability
7008L20PFGI8 is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controllers, and redundant communication controllers requiring stable component supply across extended product lifecycles.
Supply support for 7008L20PFGI8 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), now part of Renesas Electronics, is a fabless semiconductor company specializing in high-performance timing, memory, and interface solutions for industrial and communications infrastructure.
The 7008L20PFGI8 belongs to IDT's legacy dual-port SRAM family, designed specifically for deterministic real-time inter-processor communication in industrial automation, test equipment, and embedded control systems.
FAQ
What is the maximum operating temperature range for the 7008L20PFGI8?
The 7008L20PFGI8 is rated for industrial temperature operation from –40°C to +85°C. This specification is validated per the datasheet's DC electrical characteristics table under "Recommended DC Operating Conditions" and confirmed in the Absolute Maximum Ratings section. The 7008L20PFGI8 maintains full functionality-including 20 ns access time and BUSY arbitration-across this entire range.
Does the 7008L20PFGI8 support true simultaneous read/write to the same memory address?
Yes, the 7008L20PFGI8 implements true dual-ported memory cells that allow independent, asynchronous reads or writes to the same address location from left and right ports. This capability is explicitly stated in the "Features" section and verified in the functional block diagram and truth tables. No arbitration delay or data corruption occurs during such concurrent access.
How does the M/S pin configure master versus slave operation in the 7008L20PFGI8?
When M/S = VIH, the 7008L20PFGI8 operates as a Master: BUSYL and BUSYR become push-pull outputs asserting busy status during contention. When M/S = VIL, it operates as a Slave: BUSYL and BUSYR become inputs that inhibit writes when driven low by a Master. This behavior is defined in Note 1 of the Functional Block Diagram and Truth Table V.
What are the power consumption characteristics of the 7008L20PFGI8 in standby mode?
The 7008L20PFGI8 achieves 0.2 mA typical full-standby current (ISB3) when both ports are disabled with CMOS-level inputs (CE > VCC − 0.2 V). This value is specified in Table 10a for the "L" speed grade under industrial conditions. Active current is 180 mA typical (ICC) at fMAX, confirming its low-power design for always-on industrial systems.
Can the 7008L20PFGI8 be used without external pull-up resistors on BUSY and INT pins?
Yes-the 7008L20PFGI8 features push-pull (totem-pole) outputs for BUSYL, BUSYR, INTL, and INTR, as confirmed in Note 2 of the Features section and the Pin Names table. These outputs drive high/low actively and do not require external pull-up resistors, simplifying board design and improving noise immunity compared to open-drain alternatives.
7008L20PFGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tape & Reel (TR)
- 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:
- 20ns
- Access Time:
- 20 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
7008L20PFGI8 FAQ
1.How can I place an order for 7008L20PFGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7008L20PFGI8 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 7008L20PFGI8 reliable?
The price and inventory of 7008L20PFGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7008L20PFGI8 is usually 5 days.
3.What payment methods are accepted for 7008L20PFGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7008L20PFGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7008L20PFGI8?
7008L20PFGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7008L20PFGI8 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 7008L20PFGI8?
For technical support, including 7008L20PFGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7008L20PFGI8 requirements.
6.How does Aetrix verify that 7008L20PFGI8 is sourced from the original manufacturer or authorized distributors?
All 7008L20PFGI8 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 7008L20PFGI8 meets industry standards.
7.What is the process for return or replacement of 7008L20PFGI8?
All 7008L20PFGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7008L20PFGI8, 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 7008L20PFGI8 part is unused and in its original packaging.
Return procedure for 7008L20PFGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7008L20PFGI8 Tags
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