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Renesas 70V07L35PFGI
- Part No.:
- 70V07L35PFGI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 80-LQFP
- Datasheet:
-
70V07L35PFGI.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 80TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,972
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Product details
Overview
70V07L35PFGI from IDT (now Renesas) is a high-speed 32K × 8 true dual-port static RAM with independent left/right ports, 35 ns max access time (industrial grade), 3.3 V ±0.3 V supply, and integrated semaphore/arbiter logic for inter-processor synchronization in real-time embedded systems.
For engineers reviewing the 70V07L35PFGI datasheet, 70V07L35PFGI pinout, 70V07L35PFGI application, or 70V07L35PFGI equivalent, this device supports simultaneous asynchronous read/write to shared memory locations, hardware BUSY arbitration, interrupt flag signaling, and master/slave cascading for 16-bit+ data bus expansion - critical for deterministic multi-CPU communication.
Technical Context
The 70V07L35PFGI implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via BUSY flag assertion based on chip enable and address timing, not R/W state, ensuring deterministic priority resolution without external logic.
It integrates eight dedicated semaphore registers (addressed by A0–A2) accessible via SEM pin control, enabling atomic lock/unlock operations between processors. The M/S pin configures the device as master (BUSY output) or slave (BUSY input), supporting scalable width-expansion topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 32K × 8 bits (256 Kbit total); enables direct byte-wide access without data masking logic |
| Max Access Time | 35 ns (industrial temp range −40°C to +85°C); guarantees deterministic latency for hard real-time control loops |
| Supply Voltage | 3.3 V ±0.3 V; compatible with modern low-voltage FPGA and microcontroller I/O domains |
| Standby Current | 660 µA (typ.); ultra-low power retention mode for battery-backed or energy-constrained systems |
| Operating Temperature | −40°C to +85°C; qualified for industrial automation, avionics, and transportation electronics |
| Package | 80-pin TQFP (14 mm × 14 mm × 1.4 mm); surface-mount compatible with standard reflow profiles |
| Interface Type | TTL-compatible inputs/outputs; eliminates level-shifter requirements in mixed-voltage designs |
Pinout & Package
70V07L35PFGI is housed in an 80-pin thin quad flatpack (TQFP) package with exposed thermal pad (PN80-1). All VCC pins require decoupling to GND; all GND pins must be connected to system ground plane for signal integrity and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Independent port selection; high = standby mode (660 µA), low = active memory access |
| R/WL / R/WR | Read/Write Control (Left / Right) | Active-low write enable; high = read or high-Z output, low = write cycle initiation |
| OEL / OER | Output Enable (Left / Right) | Controls I/O driver state; low = outputs enabled, high = tri-state (prevents bus contention) |
| A0L–A14L / A0R–A14R | Address Inputs (Left / Right) | 15-bit address bus per port; supports full 32K address space independently on each side |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (Left / Right) | Bidirectional 8-bit data bus per port; supports simultaneous read/write across ports |
| SEML / SEMR | Semaphore Enable (Left / Right) | High = RAM access, low = semaphore register access (A0–A2 select one of eight flags) |
| INTL / INTR | Interrupt Flag Output (Left / Right) | Open-drain push-pull output; asserts when opposite port writes to mailbox addresses 7FFEh/7FFFh |
| BUSYL / BUSYR | Busy Flag (Left / Right) | Push-pull output (master) or input (slave); indicates port-to-port address contention for hardware stall coordination |
| M/S | Master/Slave Select | VIH = master (BUSY outputs), VIL = slave (BUSY inputs); enables cascaded width-expansion arrays |
| VCC / GND | Power / Ground | Eight VCC and ten GND pins distributed for low-impedance supply routing and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Independent, fully asynchronous access to same memory location - no internal arbitration delay or pipeline stalls |
| Hardware Semaphore Logic | Eight dedicated binary flags (A0–A2) with atomic read/write; eliminates software race conditions in multi-CPU resource sharing |
| On-Chip Arbitration | BUSY flag generation based solely on CE/address timing - no dependency on R/W state or external logic |
| Master/Slave Cascading | Single M/S pin configures device for width-expansion; supports error-free 16-bit+ word systems without glue logic |
| Ultra-Low Standby Power | 660 µW typical (ISB3, CMOS-level inputs); enables always-on memory retention in power-sensitive applications |
Applications
| Industrial PLC Communication Hub | Avionics Flight Control Data Exchange |
|---|---|
|
Use Scenario: Two independent CPUs (e.g., safety core and application core) share sensor fusion data and actuator command buffers in real time. IC Role / Device Role / Timing Role: Dual-port SRAM acts as deterministic, lock-free shared memory with hardware BUSY arbitration preventing concurrent writes to same address. Use Value: Eliminates software mutex overhead and guarantees sub-35 ns memory access latency for closed-loop control cycles. |
Use Scenario: Redundant flight computers exchange health status, navigation updates, and control authority handoff messages. IC Role / Device Role / Timing Role: Provides mailbox-style interrupt-driven messaging (7FFEh/7FFFh) with atomic semaphore-controlled access to shared mission-critical variables. Use Value: Ensures deterministic inter-processor synchronization without CPU polling or OS scheduler dependencies. |
| Medical Imaging Real-Time Buffer | Automotive ADAS Sensor Fusion Node |
|
Use Scenario: High-speed image acquisition processor writes raw frame data while DSP subsystem reads and processes prior frames. IC Role / Device Role / Timing Role: Acts as ping-pong buffer with independent read/write ports; semaphores coordinate buffer ownership transitions. Use Value: Sustains continuous 35 ns access throughput across both ports - no FIFO bottlenecks or DMA stalls. |
Use Scenario: Radar and camera processors concurrently access fused object list and trajectory prediction tables. IC Role / Device Role / Timing Role: Serves as time-critical shared memory with hardware BUSY arbitration resolving simultaneous access to dynamic object metadata. Use Value: Prevents data corruption during concurrent read-modify-write operations on shared tracking structures. |
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-35AXC | 32K × 8, 35 ns, 3.3 V, but uses 100-pin TQFP; higher pin count increases PCB area and routing complexity | Lacks integrated semaphore logic - requires external logic or firmware for resource locking | Choose if footprint compatibility with legacy Cypress designs is required and semaphores are implemented in software |
| AS7C33256P-35TIN | 32K × 8, 35 ns, 3.3 V, 86-pin TSOP-II; lower I/O count but no BUSY arbitration or M/S cascading support | No hardware arbitration - relies on external BUSY logic or software coordination for conflict resolution | Prefer for cost-sensitive, space-constrained designs where deterministic hardware arbitration is not mandatory |
Compared with CY7C028V-35AXC and AS7C33256P-35TIN, the 70V07L35PFGI uniquely delivers integrated semaphore registers, master/slave cascading, and push-pull BUSY signaling in a compact 80-pin TQFP - reducing BOM count and guaranteeing inter-processor synchronization without external components.
Availability
70V07L35PFGI is available at Aetrix Electronics and suitable for industrial PLC communication hubs, avionics flight control systems, and medical imaging real-time buffers requiring stable component supply across extended product lifecycles.
Supply support for 70V07L35PFGI 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 semiconductor leader specializing in high-performance memory, timing, and interface solutions for real-time embedded systems.
The 70V07L35PFGI belongs to IDT's high-speed dual-port SRAM product line, engineered specifically for deterministic multi-processor communication in industrial, aerospace, and medical applications demanding sub-40 ns latency and hardware-enforced resource coherency.
FAQ
What is the guaranteed maximum access time for 70V07L35PFGI over its full industrial temperature range?
The 70V07L35PFGI guarantees a maximum access time of 35 ns across the full industrial temperature range (−40°C to +85°C) and supply voltage range (3.0 V to 3.6 V), as specified in Table 11 of the official datasheet. This value applies to tAA, tACE, and tAOE parameters under worst-case operating conditions and is production-tested for every unit.
How does the 70V07L35PFGI implement hardware semaphore functionality?
The 70V07L35PFGI dedicates eight memory-mapped semaphore registers (addressed by A0–A2) within its 32K × 8 array. When SEM = VIL and CE = VIH, writes to I/O0 set the flag state, and reads from any I/O0–I/O7 return the current value. This enables atomic lock/unlock operations between processors without software intervention or external logic.
Can 70V07L35PFGI operate in a master/slave configuration with devices of different speed grades?
No - the 70V07L35PFGI must be paired only with other 70V07X35-grade devices (e.g., 70V07S35PFGI or 70V07L35PFGI) in master/slave cascades. Mixing speed grades (e.g., 35 ns master with 25 ns slave) violates the BUSY arbitration timing window (tAPS = 5 ns minimum), risking metastability and unreliable write inhibition during contention.
What is the function of the M/S pin on the 70V07L35PFGI, and how does it affect BUSY behavior?
The M/S pin configures the 70V07L35PFGI as master (M/S = VIH) or slave (M/S = VIL). In master mode, BUSYL and BUSYR are push-pull outputs asserting during address contention; in slave mode, they become inputs that internally inhibit writes when driven low - enabling hardware-coordinated width expansion without external gates.
Does the 70V07L35PFGI support true simultaneous read/write to the same memory location?
Yes - the 70V07L35PFGI features true dual-ported memory cells allowing simultaneous read and write operations to the same address. However, simultaneous writes to the same location trigger BUSY arbitration, permitting only one write to complete while stalling the other - preserving data coherency without corruption.
70V07L35PFGI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 80-LQFP
- Packaging:
- Tube
- 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
70V07L35PFGI FAQ
1.How can I place an order for 70V07L35PFGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V07L35PFGI 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 70V07L35PFGI reliable?
The price and inventory of 70V07L35PFGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V07L35PFGI is usually 5 days.
3.What payment methods are accepted for 70V07L35PFGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V07L35PFGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V07L35PFGI?
70V07L35PFGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V07L35PFGI 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 70V07L35PFGI?
For technical support, including 70V07L35PFGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V07L35PFGI requirements.
6.How does Aetrix verify that 70V07L35PFGI is sourced from the original manufacturer or authorized distributors?
All 70V07L35PFGI 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 70V07L35PFGI meets industry standards.
7.What is the process for return or replacement of 70V07L35PFGI?
All 70V07L35PFGI units undergo pre-shipment inspection (PSI). If there is an issue with 70V07L35PFGI, 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 70V07L35PFGI part is unused and in its original packaging.
Return procedure for 70V07L35PFGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V07L35PFGI Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
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AT24C02C-SSHM-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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