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Renesas 70V05L20PF8
- Part No.:
- 70V05L20PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
70V05L20PF8.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,499
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Product details
Overview
IDT70V05L20PF8 from Integrated Device Technology (IDT) is a high-speed 3.3V 8K × 8 dual-port static RAM with true independent read/write access on left and right ports, 20ns maximum access time (industrial grade), 64-pin TQFP package, and full hardware semaphore/arbitration logic - deployed in real-time embedded systems requiring concurrent memory access by two processors or DMA engines.
For engineers reviewing the IDT70V05L20PF8 datasheet, IDT70V05L20PF8 pinout, IDT70V05L20PF8 application, or IDT70V05L20PF8 equivalent, key selection considerations include BUSY/INT flag timing, master/slave port arbitration behavior, 3.3V-only operation, industrial temperature support (−40°C to +85°C), and compatibility with 16-bit bus expansion via cascaded MASTER/SLAVE configuration.
Technical Context
The IDT70V05L20PF8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port, enabling simultaneous non-contention reads from identical memory locations. Its on-chip arbitration logic resolves port conflicts using address-match or CE-based timing, with push-pull BUSY outputs (master mode) or inputs (slave mode).
It integrates eight dedicated semaphore flags accessible via A0–A2 addressing, supporting inter-processor synchronization without external logic. The device uses CMOS process technology, supports TTL-compatible signaling at 3.3V ±0.3V, and features automatic power-down via CE-controlled standby mode with typical 660μW consumption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8 bits (64 Kbit total), dual-port SRAM with independent left/right address/data/control paths |
| Access Time (tAA) | 20 ns max (industrial temperature range −40°C to +85°C), defines minimum cycle time for reliable read setup |
| Supply Voltage | 3.3 V ±0.3 V only - no 5V or mixed-voltage operation; requires clean, regulated 3.3V rail |
| Active Power (IDD) | Typ. 380 mW at 20 ns access - enables low-heat operation in dense embedded PCB layouts |
| Standby Current | Typ. 660 μW with CE = VIH - supports ultra-low-power sleep states in battery-backed systems |
| Operating Temperature | −40°C to +85°C (industrial grade), validated across full voltage and timing margins |
| Package | 64-pin TQFP (PNG64), 14 mm × 14 mm × 1.4 mm body, lead-free and RoHS-compliant |
Pinout & Package
Package: 64-pin thin quad flatpack (TQFP), PN64, 14 mm × 14 mm × 1.4 mm, surface-mount, lead-free.
| 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 | 13-bit address bus for right-side memory access; fully independent of left port |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; tri-stated when OEL = VIH or CEL = VIH |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit data path; tri-stated when OER = VIH or CER = VIH |
| CEL / CER | Chip enable (left/right) | Active-low enables memory access; controls active/standby current state per port |
| OEL / OER | Output enable (left/right) | Active-low enables data output drivers; allows read-only control without disabling chip |
| R/WL / R/WR | Read/write control (left/right) | Active-low = write; high = read - determines direction of I/O data flow per port |
| SEML / SEMR | Semaphore enable (left/right) | Active-low selects semaphore register access (A0–A2) instead of memory array |
| BUSYL / BUSYR | Busy flag (left/right) | Push-pull output (master) or input (slave); indicates port contention during address match |
| INTL / INTR | Interrupt flag (left/right) | Push-pull output; asserts when opposite port writes to interrupt-set address |
| M/S | Master/Slave select | VIL = slave (BUSY input); VIH = master (BUSY output); configures arbitration role |
| VDD | Power supply | 3.3 V ±0.3 V; all VDD pins must be decoupled locally to GND |
| VSS | Ground | All VSS pins must be connected to common system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables simultaneous reads from same location on both ports - eliminates arbitration delay for shared status registers |
| On-chip port arbitration logic | Resolves contention via address-match or CE-timing detection; no external glue logic required |
| Full hardware semaphore support | Eight dedicated flags accessed via A0–A2; enables lock-step synchronization between heterogeneous processors |
| Master/Slave cascading capability | Supports 16-bit+ data bus expansion using M/S pin; maintains full-speed operation without timing penalty |
| TTL-compatible 3.3V interface | Direct interfacing with 3.3V microcontrollers, FPGAs, and ASICs - no level-shifting circuitry needed |
Applications
| Industrial Motion Controller | Avionics Data Recorder |
|---|---|
|
Use Scenario: Dual-CPU architecture where one processor handles real-time servo loop execution while the other manages logging and diagnostics. IC Role / Device Role: Shared memory buffer between safety-critical control CPU and non-safety monitoring CPU. Use Value: Enables deterministic, zero-latency inter-processor communication via semaphore-protected memory regions - critical for DO-178C compliance. |
Use Scenario: High-reliability flight data recorder capturing sensor streams and telemetry under vibration, temperature extremes, and EMI stress. IC Role / Device Role: Buffer between ADC acquisition engine (right port) and flash controller (left port) with atomic timestamping. Use Value: 20ns access time and −40°C to +85°C rating ensure uninterrupted capture during rapid thermal transients and shock events. |
| Medical Imaging Subsystem | Telecom Line Card |
|
Use Scenario: Ultrasound beamformer FPGA and host ARM processor share image frame buffers and calibration tables. IC Role / Device Role: Dual-port SRAM acting as ping-pong frame buffer with hardware semaphore coordination. Use Value: Eliminates software mutex overhead and guarantees sub-microsecond context switching latency for real-time image processing pipelines. |
Use Scenario: Packet buffering in carrier-grade Ethernet line cards with separate ingress/egress traffic paths. IC Role / Device Role: Shared packet descriptor memory between network processor (left port) and switch fabric interface (right port). Use Value: BUSY flag arbitration prevents descriptor corruption during concurrent read-modify-write operations - essential for 99.999% uptime SLAs. |
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, 100-pin TQFP, 3.3V core / 2.5V I/O option | Wider data bus; requires PCB redesign for 16-bit interface; higher pin count increases layout complexity | Select when 16-bit native word width is mandatory and board space permits larger footprint |
| AS7C38097A-20JCIN | 20 ns access, 8K × 8, 64-pin TQFP, 3.3V only, no built-in semaphore or BUSY logic | Lacks hardware arbitration - requires external logic or firmware polling for port coordination | Select for cost-sensitive designs where arbitration is handled in software and timing margins allow added latency |
Compared with CY7C024AV-20AXC and AS7C38097A-20JCIN, the IDT70V05L20PF8 delivers integrated arbitration and semaphore logic in a pin-compatible 64-pin TQFP, reducing BOM count and eliminating timing-critical external logic - making it optimal for space-constrained, real-time deterministic systems.
Availability
IDT70V05L20PF8 is available at Aetrix Electronics and suitable for industrial motion controllers, avionics data recorders, and medical imaging subsystems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for IDT70V05L20PF8 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
Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance computing solutions.
The IDT70V05L20PF8 belongs to IDT's legacy dual-port SRAM product line, designed specifically for deterministic, low-latency inter-processor communication in real-time embedded systems across industrial, aerospace, and medical domains.
FAQ
What is the operating temperature range for the IDT70V05L20PF8?
The IDT70V05L20PF8 is rated for industrial temperature operation from −40°C to +85°C, with all AC and DC specifications guaranteed across this full range. This makes the IDT70V05L20PF8 suitable for deployment in harsh environments such as factory automation equipment, outdoor telecom infrastructure, and vehicle-mounted control units where ambient thermal stability cannot be assumed.
Does the IDT70V05L20PF8 support 5V-tolerant I/O?
No, the IDT70V05L20PF8 operates exclusively at 3.3V ±0.3V and is not 5V-tolerant. All inputs must remain within VSS to VDD + 0.3V (i.e., 0 V to 3.6 V). Connecting 5V signals directly to any pin will exceed absolute maximum ratings and may cause permanent damage. Level-shifting circuitry is required for interfacing with 5V logic families.
How does the BUSY signal function in master vs. slave configuration on the IDT70V05L20PF8?
When M/S = VIH, the IDT70V05L20PF8 operates as a master: BUSYL and BUSYR are push-pull outputs that assert low during port contention. When M/S = VIL, it operates as a slave: BUSYL and BUSYR become inputs used to inhibit writes when the opposing port is active. This dual-role design enables flexible system-level arbitration without external logic.
Can the IDT70V05L20PF8 be used in a 16-bit data bus configuration?
Yes - the IDT70V05L20PF8 supports 16-bit expansion via MASTER/SLAVE cascading. Two devices can be configured with M/S = VIH (master) and M/S = VIL (slave), using the BUSY flag to coordinate access. This preserves full 20ns performance without added wait states or external arbitration logic, enabling seamless upgrade from 8-bit to 16-bit word systems.
What is the purpose of the SEM pins on the IDT70V05L20PF8?
The SEML and SEMR pins on the IDT70V05L20PF8 enable access to the internal 8-bit semaphore register bank. When SEM = VIL and CE = VIH, the device ignores the memory array and routes I/O0–I/O7 to eight dedicated flags addressed by A0–A2. This provides hardware-accelerated inter-processor locking without consuming main memory space or requiring software polling loops.
70V05L20PF8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tape & Reel (TR)
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (14x14)
70V05L20PF8 FAQ
1.How can I place an order for 70V05L20PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V05L20PF8 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 70V05L20PF8 reliable?
The price and inventory of 70V05L20PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V05L20PF8 is usually 5 days.
3.What payment methods are accepted for 70V05L20PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V05L20PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V05L20PF8?
70V05L20PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V05L20PF8 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 70V05L20PF8?
For technical support, including 70V05L20PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V05L20PF8 requirements.
6.How does Aetrix verify that 70V05L20PF8 is sourced from the original manufacturer or authorized distributors?
All 70V05L20PF8 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 70V05L20PF8 meets industry standards.
7.What is the process for return or replacement of 70V05L20PF8?
All 70V05L20PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 70V05L20PF8, 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 70V05L20PF8 part is unused and in its original packaging.
Return procedure for 70V05L20PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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