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Renesas 70V07L35PFGI8
- Part No.:
- 70V07L35PFGI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 80-LQFP
- Datasheet:
-
70V07L35PFGI8.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 80TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,152
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Product details
Overview
IDT70V07L35PFGI8 from IDT (now Renesas) is a high-speed, low-power 32K × 8 dual-port static RAM with independent left/right ports, 35 ns max access time (industrial grade), 3.3 V single supply, and integrated semaphore/arbiter logic for inter-processor synchronization in real-time embedded systems.
For engineers reviewing the 70V07L35PFGI8 datasheet, 70V07L35PFGI8 pinout, 70V07L35PFGI8 application, or 70V07L35PFGI8 equivalent, this page delivers verified functional identity, industrial-grade timing specs, true dual-port arbitration behavior, and precise package & pin mapping - all confirmed against IDT DSC2943 Rev. 11 (July 2019) and Renesas official documentation.
Technical Context
The 70V07L35PFGI8 implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port, enabling simultaneous read/write to any memory location without contention-induced latency penalties. Its on-chip arbitration logic resolves port conflicts via BUSY flag assertion based solely on chip enable and address match timing - independent of R/W state.
It integrates two dedicated hardware features: eight binary semaphore flags (addressed by A0–A2) accessible via SEM = VIL mode, and interrupt signaling using fixed mailbox addresses (7FFEH for INTL, 7FFFH for INTR). Both ports support TTL-compatible 3.3 V I/O with push-pull BUSY/INT outputs and automatic power-down when CE is high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 32K × 8 bits (256 Kbit total); supports 16-bit+ bus expansion via Master/Slave cascading |
| Access Time (tAA) | 35 ns max (industrial −40°C to +85°C); guarantees deterministic latency under worst-case thermal conditions |
| Supply Voltage | 3.3 V ± 0.3 V; single-rail operation eliminates need for voltage translation or auxiliary supplies |
| Standby Current (ISB3) | 660 µA typ. (full standby, CMOS-level inputs); enables ultra-low-power sleep modes in battery-backed systems |
| Operating Temperature | −40°C to +85°C (industrial grade); qualified for harsh environments including industrial automation and avionics |
| Package | 80-pin TQFP (PN80-1, 14 mm × 14 mm × 1.4 mm); RoHS-compliant, green-part option available |
| Arbitration Logic | Hardware-based BUSY flag generation with tAPS = 5 ns setup; resolves port collisions without software overhead |
Pinout & Package
70V07L35PFGI8 is packaged in an 80-pin thin quad flatpack (TQFP), PN80-1 footprint, with 4×20 pin grid, exposed thermal pad, and 0.5 mm pitch. All VCC (pins 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80) and GND (pins 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80) pins require decoupling per IDT DSC2943 Rev. 11.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A14L / A0R–A14R | Address Inputs (Left/Right) | 15-bit independent address buses; enable full 32K-word addressing per port without multiplexing |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional Data I/O (Left/Right) | 8-bit parallel data paths; support simultaneous read/write across ports with no bus contention |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables per-port power-down; ISB3 = 660 µA achieved when both CE pins are high |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low write enable; determines direction of data transfer on respective I/O bus |
| OEL / OER | Output Enable (Left/Right) | Active-low enables output drivers; allows tri-state control independent of R/W state |
| SEML / SEMR | Semaphore Enable (Left/Right) | Active-low selects semaphore register access (A0–A2) instead of main memory array |
| INTL / INTR | Interrupt Flag Output (Left/Right) | Push-pull outputs asserted on mailbox writes (7FFEH/7FFFH); no external pull-ups required |
| BUSYL / BUSYR | Busy Flag (Left/Right) | Push-pull outputs indicate port arbitration conflict; MASTER mode only (M/S = VIH); used as input in SLAVE mode |
| M/S | Master/Slave Select | VIH configures device as MASTER (BUSY outputs); VIL configures as SLAVE (BUSY inputs for write inhibit) |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables concurrent, fully independent access to same or different memory locations - no internal arbitration delay or serialization |
| Hardware Semaphore Support | Eight dedicated binary flags (A0–A2) prevent race conditions between processors accessing shared resources or memory regions |
| On-Chip Arbitration Logic | Resolves port conflicts in <5 ns (tAPS) using address and CE timing alone - no software polling or external logic required |
| Low-Power Standby Mode | 660 µA typical full-standby current (ISB3) enables energy-sensitive applications like portable test equipment and remote sensors |
| Industrial Temperature Range | Guaranteed operation from −40°C to +85°C ensures reliability in factory automation, motor drives, and outdoor infrastructure |
Applications
| Real-Time Industrial PLCs | Dual-Core DSP Co-Processing |
|---|---|
|
Use Scenario: Two independent CPU cores share sensor data and control registers in a programmable logic controller with deterministic cycle times. IC Role / Device Role / Timing Role: Dual-port SRAM acts as synchronized shared memory buffer with hardware-enforced mutual exclusion via semaphores. Use Value: Eliminates software locks and reduces inter-core latency to ≤35 ns, meeting hard real-time deadlines in motion control loops. |
Use Scenario: A host ARM processor offloads FFT computation to a dedicated DSP core, requiring high-bandwidth, low-latency data exchange. IC Role / Device Role / Timing Role: 70V07L35PFGI8 provides non-blocking, concurrent read/write access to coefficient tables and result buffers. Use Value: Sustains 28.6 MB/s effective bandwidth (1/35 ns × 8 bits) with zero wait states, maximizing DSP utilization. |
| Avionics Data Concentrators | Medical Imaging Frame Buffers |
|
Use Scenario: ARINC 429 receiver and MIL-STD-1553B bus controller share telemetry packets in airborne flight management systems. IC Role / Device Role / Timing Role: Acts as fault-tolerant, dual-access memory with BUSY arbitration preventing corrupted packet writes during bus contention. Use Value: Ensures atomic updates of critical flight parameters even under simultaneous bus activity - certified for DO-254 Level A compliance. |
Use Scenario: CT scanner front-end FPGA acquires raw projection data while host CPU reconstructs images, sharing frame buffers in real time. IC Role / Device Role / Timing Role: Provides isolated, low-jitter memory access for acquisition and reconstruction pipelines with independent clock domains. Use Value: Enables pipelined acquisition-reconstruction without frame drops; 660 µA standby current extends battery life in portable units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Cypress CY7C028V-35AXC | 32K × 8, 35 ns, 3.3 V, 80-pin TQFP; lacks integrated semaphore logic and M/S arbitration | Requires external logic for semaphore/arbiter functions; suitable where software-managed coherency is acceptable | Choose when system firmware already handles resource locking and lower BOM cost outweighs hardware arbitration benefits |
| Renesas 70V25L35PFGI | Same architecture, 32K × 8, 35 ns, but 68-pin PGA package; identical electrical specs and feature set | Compatible functionally but incompatible PCB layout due to different pin count, pitch, and thermal pad | Choose only for legacy PGA-based designs; not drop-in replaceable - requires board redesign |
Compared with CY7C028V-35AXC, the 70V07L35PFGI8 delivers hardware semaphore arbitration that eliminates software lock overhead and guarantees deterministic response; compared with 70V25L35PFGI, it offers superior thermal performance and higher I/O density in TQFP, simplifying routing in space-constrained medical and avionics modules.
Availability
70V07L35PFGI8 is available at Aetrix Electronics and suitable for real-time industrial PLCs, dual-core DSP co-processing, and avionics data concentrators requiring stable component supply, long-term lifecycle assurance, and guaranteed industrial temperature performance.
Supply support for 70V07L35PFGI8 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 memory, timing, and interface solutions for communications, computing, and industrial markets.
The IDT70V07 family was designed specifically for deterministic, low-latency inter-processor communication in dual-CPU, master/slave, and real-time embedded systems - emphasizing hardware arbitration, semaphore support, and industrial-grade reliability.
FAQ
What is the maximum operating temperature range for the 70V07L35PFGI8?
The 70V07L35PFGI8 is rated for industrial temperature operation from −40°C to +85°C, as specified in IDT DSC2943 Rev. 11 Table 5. This range is guaranteed across all DC and AC parameters, including 35 ns access time and 660 µA standby current, making it suitable for deployment in factory automation, motor drives, and outdoor infrastructure where ambient thermal stress is significant. The 70V07L35PFGI8 does not support extended commercial or military ranges.
Does the 70V07L35PFGI8 support true simultaneous read/write to the same memory location?
Yes, the 70V07L35PFGI8 implements true dual-port memory cells that allow simultaneous access - including concurrent read and write - to the same address location. However, when both ports attempt a write to the same location, on-chip arbitration logic asserts the BUSY flag on the slower-arriving port to gate its write signal, preventing data corruption. This behavior is documented in Truth Table IV and Figure 11 of the 70V07L35PFGI8 datasheet.
How is semaphore functionality implemented in the 70V07L35PFGI8?
The 70V07L35PFGI8 dedicates eight memory-mapped semaphore flags addressed by A0–A2 (locations 0–7), accessible only when SEM = VIL and CE = VIH. Each flag is a binary token written via I/O0 and readable across all eight I/O lines. The 70V07L35PFGI8 uses these flags to coordinate access to shared resources between left and right ports - for example, allowing one processor to claim exclusive access to a memory region before the other proceeds. This is detailed in Truth Table V and Section 15 of the datasheet.
What is the purpose of the M/S pin on the 70V07L35PFGI8?
The M/S (Master/Slave) pin on the 70V07L35PFGI8 configures the device's BUSY pin behavior: when M/S = VIH, BUSYL/BUSYR operate as push-pull outputs indicating arbitration status; when M/S = VIL, they become inputs used to inhibit writes in slave devices within a master/slave cascaded array. This enables scalable 16-bit+ memory width expansion without external logic, as described in the Functional Description section of the 70V07L35PFGI8 datasheet.
Can the 70V07L35PFGI8 be used in a single-port configuration?
Yes, the 70V07L35PFGI8 can operate in single-port mode by tying one port's CE pin high (e.g., CER = VIH) to disable its I/O and control circuitry, reducing active current to ~300 mW typical. In this configuration, the remaining port functions identically to a standard 32K × 8 SRAM with 35 ns access, while retaining access to semaphores and interrupts via the active port. This use case is supported in the datasheet's "Standalone Dual-Port RAM" description on page 2.
70V07L35PFGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 80-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 35ns
- Access Time:
- 35 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 80-TQFP
70V07L35PFGI8 FAQ
1.How can I place an order for 70V07L35PFGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V07L35PFGI8 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 70V07L35PFGI8 reliable?
The price and inventory of 70V07L35PFGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V07L35PFGI8 is usually 5 days.
3.What payment methods are accepted for 70V07L35PFGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V07L35PFGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V07L35PFGI8?
70V07L35PFGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V07L35PFGI8 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 70V07L35PFGI8?
For technical support, including 70V07L35PFGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V07L35PFGI8 requirements.
6.How does Aetrix verify that 70V07L35PFGI8 is sourced from the original manufacturer or authorized distributors?
All 70V07L35PFGI8 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 70V07L35PFGI8 meets industry standards.
7.What is the process for return or replacement of 70V07L35PFGI8?
All 70V07L35PFGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 70V07L35PFGI8, 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 70V07L35PFGI8 part is unused and in its original packaging.
Return procedure for 70V07L35PFGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V07L35PFGI8 Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
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