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Renesas 70V05L20PFI
- Part No.:
- 70V05L20PFI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
70V05L20PFI.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,891
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Product details
Overview
70V05L20PFI from IDT is a high-speed 3.3V 8K × 8 dual-port static RAM with true independent left/right ports, 20ns maximum access time (industrial grade), 380mW typical active power, and full on-chip semaphore and BUSY arbitration logic - deployed in real-time embedded systems requiring concurrent CPU/DSP memory access without external logic.
For engineers reviewing the 70V05L20PFI datasheet, 70V05L20PFI pinout, 70V05L20PFI application, or 70V05L20PFI equivalent, key selection criteria include industrial temperature support (−40°C to +85°C), TQFP-64 packaging, master/slave cascading capability for 16-bit+ bus expansion, and hardware semaphore flag management across ports.
Technical Context
The 70V05L20PFI implements fully asynchronous dual-port operation: each port (Left/Right) has independent address, data, control (CE/OE/R/W), and interrupt/semaphore signaling. Port arbitration is handled entirely in hardware via BUSY flag generation (push-pull output) and automatic write inhibition during contention.
It supports two distinct operational modes: standalone 64K-bit SRAM or master/slave configuration using M/S pin to enable BUSY-driven coordination - where master asserts BUSYL/BUSYR as outputs and slave accepts them as inputs to gate writes, eliminating external arbitration logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8 bits (64K-bit total), dual-port architecture enabling simultaneous read/write to same location |
| Access Time (tAA) | 20 ns max (industrial temp range −40°C to +85°C), enabling 50 MHz sustained random access |
| Supply Voltage | 3.3 V ± 0.3 V - single TTL-compatible rail, no auxiliary supplies required |
| Active Power (IDD) | 380 mW typ. at 3.3 V, 20 ns access - low enough for dense embedded memory subsystems |
| Standby Power (ISB) | 660 μW typ. - achieved by CE-controlled automatic power-down per port |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade reliability without derating |
| Package | 64-pin TQFP (PNG64), 14 mm × 14 mm × 1.4 mm - surface-mount compatible with automated assembly |
Pinout & Package
64-pin thin quad flatpack (TQFP), package code PNG64, body size 14 mm × 14 mm × 1.4 mm. All VDD pins require local 3.3 V decoupling; all VSS pins must be connected to ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A12L | Left port address inputs | 13-bit address bus for left-side memory access (8K = 2¹³) |
| A0R–A12R | Right port address inputs | Independent 13-bit address bus for right-side access |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; direction controlled by R/WL and OEL |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit data path; direction controlled by R/WR and OER |
| CEL, CER | Chip enable (active low) | Per-port enable - deasserting CEL or CER places that port in ultra-low-power standby |
| OEL, OER | Output enable (active low) | Controls tri-state of I/O drivers - enables shared bus usage |
| R/WL, R/WR | Read/write control (active low = write) | Determines data flow direction per port; synchronous with CE and OE |
| SEML, SEMR | Semaphore enable (active low) | Selects semaphore register access mode instead of memory array |
| INTL, INTR | Interrupt flags (open-drain push-pull) | Indicate semaphore state change or write completion; require external pull-up |
| BUSYL, BUSYR | Arbitration status (push-pull) | When M/S = VIH (master): outputs indicating port contention; when M/S = VIL (slave): inputs disabling writes |
| M/S | Master/Slave select | Voltage-level configured: VIH = master (BUSY outputs), VIL = slave (BUSY inputs) |
| VDD, VSS | Power and ground | Multiple dedicated VDD/VSS pins ensure stable core voltage under fast switching |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables simultaneous reads/writes to identical addresses - eliminates software serialization overhead in multi-processor systems |
| Hardware semaphore logic | Eight dedicated flags (addressed via A0–A2) managed entirely on-die - no external latches or glue logic needed |
| Automatic BUSY arbitration | Push-pull BUSY signals resolve port contention in hardware; configurable master/slave behavior via M/S pin |
| Per-port power management | Individual CE control allows one port to remain active while the other enters 660 μW standby - critical for asymmetric workloads |
| Master/slave cascading | Supports 16-bit+ data bus expansion using multiple devices with no external arbitration - reduces PCB layer count and timing complexity |
Applications
| Real-Time DSP Systems | Industrial PLC Controllers |
|---|---|
|
Use Scenario: Dual-core DSP system where one core processes sensor data while the other runs motor control algorithms, sharing telemetry buffers. IC Role / Device Role / Timing Role: 70V05L20PFI serves as shared memory buffer with zero-wait-state concurrent access - eliminating inter-core handshake latency. Use Value: Enables deterministic sub-20ns memory coherency between cores without software locks or polling, meeting hard real-time deadlines. |
Use Scenario: Programmable logic controller with separate I/O scan engine and user program execution engine accessing common tag database. IC Role / Device Role / Timing Role: 70V05L20PFI acts as dual-access scratchpad memory - I/O engine writes sensor inputs while program engine reads/writes control variables. Use Value: Guarantees atomic semaphore-based synchronization for tag updates, preventing race conditions during cyclic scan operations. |
| Avionics Data Recorders | Medical Imaging Front-Ends |
|
Use Scenario: Flight data recorder capturing high-rate sensor streams while simultaneously allowing maintenance interface to read logged data. IC Role / Device Role / Timing Role: 70V05L20PFI functions as circular buffer memory - one port continuously writes new samples, the other services read requests. Use Value: 20ns access and industrial temp rating ensure uninterrupted capture at 50 MHz sampling rates, even in extended thermal environments. |
Use Scenario: Ultrasound beamformer ASIC acquiring echo data while host processor configures acquisition parameters and retrieves processed frames. IC Role / Device Role / Timing Role: 70V05L20PFI provides low-latency parameter/data exchange memory - beamformer writes raw echoes, host reads compressed frames. Use Value: Hardware semaphore flags coordinate frame handoff without CPU intervention, reducing host load and improving frame throughput. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C024AV-20AXC | 20 ns access, 8K × 16 organization, 3.3 V supply, but requires external arbitration logic for semaphore/BUSY | Larger word width simplifies 16-bit bus design but increases layout complexity due to missing integrated arbitration | Choose if 16-bit native width outweighs need for external glue logic and higher power (550 mW active) |
| AS7C38099B-20TIN | 20 ns access, 8K × 8, 3.3 V, but lacks hardware semaphore, BUSY, and master/slave modes - only basic dual-port | Suitable for simple dual-CPU sharing but cannot replace 70V05L20PFI in systems requiring atomic flag coordination or contention resolution | Choose only for cost-sensitive designs where semaphore/BUSY functionality is implemented in FPGA or software |
Compared with CY7C024AV-20AXC and AS7C38099B-20TIN, the 70V05L20PFI uniquely integrates full hardware arbitration - reducing BOM count, PCB area, and firmware complexity in real-time deterministic systems.
Availability
70V05L20PFI is available at Aetrix Electronics and suitable for industrial automation, avionics data logging, and medical imaging front-ends requiring stable component supply across extended product lifecycles.
Supply support for 70V05L20PFI 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) is a fabless semiconductor company specializing in high-performance timing, memory, and interface solutions, now part of Renesas Electronics.
The 70V05L20PFI belongs to IDT's legacy dual-port SRAM family, designed specifically for deterministic real-time systems requiring concurrent, conflict-free memory access between heterogeneous processors or peripherals.
FAQ
What is the operating temperature range for the 70V05L20PFI?
70V05L20PFI is rated for industrial temperature operation from −40°C to +85°C. This is confirmed in the datasheet's "Features" section and DC/AC Electrical Characteristics tables, where all 20 ns timing specifications and power values are explicitly validated across this range.
Does the 70V05L20PFI support true simultaneous read/write to the same memory location?
Yes, the 70V05L20PFI features true dual-ported memory cells that allow simultaneous reads of the same location - explicitly stated in the "Features" list. Simultaneous write-to-same-location is not supported; hardware arbitration (via BUSY) prevents conflicting writes.
How does the M/S pin configure master vs. slave behavior in the 70V05L20PFI?
When M/S = VIH, the 70V05L20PFI operates as master: BUSYL and BUSYR become push-pull outputs indicating port contention. When M/S = VIL, it operates as slave: BUSYL and BUSYR become inputs that inhibit writes when asserted - enabling daisy-chained arbitration without external logic.
What package type is used for the 70V05L20PFI, and what are its dimensions?
70V05L20PFI uses a 64-pin TQFP package (code PNG64), with physical dimensions of 14 mm × 14 mm × 1.4 mm. This is documented in the "Pin Configurations" section and confirmed in the mechanical drawing notes on page 2 of the datasheet.
Can the 70V05L20PFI be used in a 16-bit data bus configuration?
Yes - the 70V05L20PFI supports 16-bit expansion via master/slave cascading. The datasheet states: "IDT70V05 easily expands data bus width to 16 bits or more using the Master/Slave select when cascading more than one device," with BUSY signaling coordinating access between devices.
70V05L20PFI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 20ns
- Access Time:
- 20 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (14x14)
70V05L20PFI FAQ
1.How can I place an order for 70V05L20PFI through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V05L20PFI 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 70V05L20PFI reliable?
The price and inventory of 70V05L20PFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V05L20PFI is usually 5 days.
3.What payment methods are accepted for 70V05L20PFI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V05L20PFI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V05L20PFI?
70V05L20PFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V05L20PFI 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 70V05L20PFI?
For technical support, including 70V05L20PFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V05L20PFI requirements.
6.How does Aetrix verify that 70V05L20PFI is sourced from the original manufacturer or authorized distributors?
All 70V05L20PFI 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 70V05L20PFI meets industry standards.
7.What is the process for return or replacement of 70V05L20PFI?
All 70V05L20PFI units undergo pre-shipment inspection (PSI). If there is an issue with 70V05L20PFI, 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 70V05L20PFI part is unused and in its original packaging.
Return procedure for 70V05L20PFI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V05L20PFI Tags
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