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Renesas 70V07L25PFI8
- Part No.:
- 70V07L25PFI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 80-LQFP
- Datasheet:
-
70V07L25PFI8.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 80TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,834
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Product details
Overview
70V07L25PFI8 from IDT (now Renesas) is a high-speed 32K × 8 true dual-port static RAM with independent left/right ports, 25 ns max access time (industrial grade), 3.3 V ±0.3 V single supply, and integrated semaphore/INT/BUSY arbitration logic - used in real-time inter-processor communication systems requiring simultaneous memory access without software coordination.
For engineers reviewing the 70V07L25PFI8 datasheet, 70V07L25PFI8 pinout, 70V07L25PFI8 application, or 70V07L25PFI8 equivalent, key selection criteria include industrial temperature support (−40°C to +85°C), ultra-low standby current (660 µW typ.), 80-pin TQFP package, and hardware semaphore flag management for deterministic resource sharing between two CPUs or DSPs.
Technical Context
The 70V07L25PFI8 implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port - enabling concurrent read/write to any memory location. Its on-chip arbitration logic resolves contention via BUSY flag assertion based on chip enable and address match timing, not R/W state.
It integrates eight dedicated semaphore registers (addressed by A0–A2), interrupt flags (INTL/INTR tied to fixed addresses 7FFEh/7FFFh), and Master/Slave configuration (M/S pin) for width expansion - all operating without external logic under TTL-compatible 3.3 V signaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 32K × 8 bits (256 Kbit total), fully random-access SRAM array |
| Access Time (tAA) | 25 ns max - guarantees sub-40 MHz synchronous interface compatibility |
| Supply Voltage | 3.3 V ±0.3 V - requires single low-noise LDO, no level translation needed |
| Standby Current (ISB3) | 660 µW typ. (full CMOS standby) - enables always-on inter-processor mailbox with µA-level quiescent draw |
| Operating Temperature | −40°C to +85°C - qualified for industrial embedded control and telecom line cards |
| Package | 80-pin TQFP (14 mm × 14 mm × 1.4 mm) - surface-mount compatible with standard reflow profiles |
| Bus Width Support | Natively 8-bit per port; supports 16-bit+ expansion via M/S cascading with automatic BUSY arbitration |
Pinout & Package
80-pin thin quad flatpack (TQFP), RoHS-compliant, body size 14 mm × 14 mm × 1.4 mm. All VCC pins require local 3.3 V decoupling; all GND pins must be connected to system ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A14L | Left port address inputs | 15-bit address bus for 32K locations; asynchronous with right port |
| A0R–A14R | Right port address inputs | Independent 15-bit address space - no timing dependency on left port |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit TTL-compatible I/O; tri-stated when OEL = VIH or CEL = VIH |
| I/O0R–I/O7R | Right port bidirectional data | Electrically isolated from left port I/O - no bus contention risk |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; controls power-down mode when high |
| R/WL / R/WR | Read/write control (left/right) | Active-low write enable; high = read (outputs enabled if OEL/OER active) |
| OEL / OER | Output enable (left/right) | Tri-states I/O drivers independently of CE - enables shared-bus multiplexing |
| SEML / SEMR | Semaphore enable (left/right) | Low enables access to 8 semaphore flags (A0–A2); high enables RAM access |
| INTL / INTR | Interrupt flag outputs | Open-drain push-pull outputs - assert on mailbox writes (7FFEh/7FFFh) |
| BUSYL / BUSYR | Busy flag (input/output) | Push-pull; output when M/S = VIH (master), input when M/S = VIL (slave) |
| M/S | Master/Slave select | VIH = master (BUSY outputs), VIL = slave (BUSY inputs) - enables multi-chip width expansion |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port architecture | Simultaneous independent read/write to same address - no arbitration delay or software overhead |
| Hardware semaphore logic | Eight binary flags (A0–A2) with atomic read/write - prevents race conditions in shared-resource locking |
| Automatic BUSY arbitration | Deterministic port-to-port conflict resolution using CE + address match - no external logic required |
| Integrated interrupt mailbox | Dedicated 7FFEh/7FFFh addresses trigger INTL/INTR - enables zero-latency inter-processor signaling |
| Ultra-low-power standby | 660 µW typical full standby (ISB3) - suitable for battery-backed or energy-constrained systems |
Applications
| Industrial PLC Communication Bridge | Telecom Line Card Dual-CPU Interface |
|---|---|
Use Scenario: Two independent microcontrollers exchange status, commands, and sensor data across a shared memory region in an industrial programmable logic controller. IC Role / Device Role / Timing Role: Dual-port SRAM acts as a hardware-synchronized mailbox - left port serves CPU1, right port serves CPU2, with BUSY arbitration preventing write collisions. Use Value: Eliminates polling or software semaphores; guarantees deterministic <25 ns inter-processor message latency under worst-case contention. |
Use Scenario: In a telecom line card, a control CPU and a packet-processing DSP share configuration tables and real-time statistics buffers. IC Role / Device Role / Timing Role: 70V07L25PFI8 provides non-blocking memory access - DSP reads/writes at full throughput while control CPU updates parameters asynchronously. Use Value: Enables concurrent DMA transfers and register updates without stalling either processor - critical for sub-100 µs jitter requirements. |
| Avionics Sensor Fusion Module | Medical Imaging Data Buffer |
Use Scenario: Safety-critical avionics module uses redundant processors to cross-validate inertial measurement unit (IMU) data before actuation decisions. IC Role / Device Role / Timing Role: Acts as fault-tolerant shared memory with semaphore-controlled access - each CPU locks its own data segment before writing. Use Value: Hardware-enforced mutual exclusion ensures data integrity even during single-point failures - meets DO-254 Level A design assurance. |
Use Scenario: MRI or CT scanner front-end acquires raw pixel data from ADCs and passes it to a reconstruction engine via shared buffer. IC Role / Device Role / Timing Role: Left port accepts streaming ADC data at 50+ MB/s; right port feeds reconstruction pipeline - no FIFO buffering needed. Use Value: 25 ns access enables real-time transfer of 16-bit pixel streams without backpressure - reduces image acquisition latency by >12% vs. FIFO-based designs. |
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-25AXC | 25 ns access, 32K × 8, but only commercial temp (0°C to +70°C); no integrated semaphore logic | Lacks hardware semaphore and INT/BUSY signals - requires external logic for resource arbitration | Choose only if operating within commercial temperature range and software-managed arbitration is acceptable |
| AS7C33256P-25JCIN | 25 ns access, 32K × 8, industrial temp, but asynchronous single-port only - no dual-port capability | No left/right port separation - cannot support true concurrent CPU access | Select only for cost-sensitive applications where inter-processor synchronization is handled externally (e.g., via FPGA logic) |
Compared with CY7C028V-25AXC and AS7C33256P-25JCIN, the 70V07L25PFI8 uniquely delivers industrial-grade dual-port operation with on-die arbitration, eliminating external glue logic and reducing BOM count while guaranteeing deterministic timing for safety-critical embedded systems.
Availability
70V07L25PFI8 is available at Aetrix Electronics and suitable for industrial PLC communication bridges, telecom line card dual-CPU interfaces, avionics sensor fusion modules, and medical imaging data buffers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 70V07L25PFI8 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 70V07L25PFI8 belongs to IDT's legacy high-speed dual-port SRAM product line, designed specifically for deterministic inter-processor communication in real-time embedded systems where hardware-enforced concurrency control is mandatory.
FAQ
What is the maximum operating temperature range for the 70V07L25PFI8?
The 70V07L25PFI8 is rated for industrial temperature operation from −40°C to +85°C. This specification is guaranteed across all electrical parameters including access time (25 ns max), standby current (660 µW typ.), and BUSY arbitration timing - making it suitable for deployment in harsh environments such as factory automation controllers and outdoor telecom equipment.
Does the 70V07L25PFI8 support true simultaneous read/write to the same memory location?
Yes, the 70V07L25PFI8 implements true dual-port memory cells that allow simultaneous access - including concurrent read and write - to the same address. When contention occurs, hardware BUSY arbitration asserts the appropriate BUSY flag to stall one port, ensuring data integrity without software intervention or external logic.
How does the semaphore functionality work on the 70V07L25PFI8?
The 70V07L25PFI8 includes eight dedicated semaphore flags accessed via A0–A2 when SEM = VIL. Each flag is a binary token that can be atomically written by one port and read by both. Writing "0" claims the flag; writing "1" releases it. This enables lock-free resource sharing - for example, one CPU locks a shared peripheral before the other attempts access.
Can the 70V07L25PFI8 be used in a 16-bit data path configuration?
Yes, the 70V07L25PFI8 supports 16-bit or wider data paths via Master/Slave cascading. One device operates as master (M/S = VIH) to generate BUSY arbitration for the entire array; others operate as slaves (M/S = VIL) using BUSY as a write-inhibit input. No additional discrete logic is required - the architecture scales seamlessly to 32-bit or 64-bit widths.
What is the significance of the "L" suffix in 70V07L25PFI8?
The "L" in 70V07L25PFI8 denotes the low-power variant: it delivers identical 25 ns access performance as the "S" version but achieves 660 µW typical full standby current (ISB3) versus 3.3 mW for the "S" variant. This makes the 70V07L25PFI8 optimal for always-on, energy-sensitive applications like remote sensors or battery-backed control modules.
70V07L25PFI8 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:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 80-TQFP (14x14)
70V07L25PFI8 FAQ
1.How can I place an order for 70V07L25PFI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V07L25PFI8 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 70V07L25PFI8 reliable?
The price and inventory of 70V07L25PFI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V07L25PFI8 is usually 5 days.
3.What payment methods are accepted for 70V07L25PFI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V07L25PFI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V07L25PFI8?
70V07L25PFI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V07L25PFI8 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 70V07L25PFI8?
For technical support, including 70V07L25PFI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V07L25PFI8 requirements.
6.How does Aetrix verify that 70V07L25PFI8 is sourced from the original manufacturer or authorized distributors?
All 70V07L25PFI8 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 70V07L25PFI8 meets industry standards.
7.What is the process for return or replacement of 70V07L25PFI8?
All 70V07L25PFI8 units undergo pre-shipment inspection (PSI). If there is an issue with 70V07L25PFI8, 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 70V07L25PFI8 part is unused and in its original packaging.
Return procedure for 70V07L25PFI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V07L25PFI8 Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-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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