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Renesas 70V05L35PF
- Part No.:
- 70V05L35PF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
70V05L35PF.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,419
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Product details
Overview
70V05L35PF from IDT (Integrated Device Technology) is a high-speed 3.3V 8K × 8 dual-port static RAM with true independent left/right ports, 35 ns maximum access time, industrial temperature range (–40°C to +85°C), and integrated semaphore/arbiter logic - used in real-time embedded systems requiring concurrent CPU/DSP memory access without external glue logic.
For engineers reviewing the 70V05L35PF datasheet, 70V05L35PF pinout, 70V05L35PF application, or 70V05L35PF equivalent, key selection criteria include dual-port arbitration timing (tAPS, tBDD), BUSY flag behavior under M/S configuration, 3.3V-only operation, and compatibility with 64-pin TQFP footprint for space-constrained industrial control and telecom line-card designs.
Technical Context
The 70V05L35PF implements fully asynchronous dual-port architecture with separate address, data, and control buses per port (L/R), enabling simultaneous read/write operations to distinct or identical addresses. Its on-chip arbitration logic resolves contention via BUSY signaling and supports both address-match and CE-controlled arbitration modes.
It integrates full hardware semaphore support (8 flags addressed by A0–A2), interrupt generation (INTL/INTR), and MASTER/SLAVE cascading capability using the M/S pin - allowing seamless expansion to 16-bit+ data widths without external logic. Power management includes CE-driven automatic standby mode with sub-mW quiescent current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8 bits (64 Kbit total), dual-port SRAM with independent L/R address/data/control paths |
| Access Time (tAA) | 35 ns max - guarantees deterministic read latency for real-time DSP or FPGA co-processor interfaces |
| Supply Voltage | 3.3 V ± 0.3 V only - requires dedicated 3.3V rail; not 5V-tolerant or multi-voltage capable |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including motor drives and base station equipment |
| Active Current (IDD) | 115 mA typical at fMAX - enables thermal budgeting for dense PCB layouts with multiple dual-port devices |
| Standby Current (ISB) | 660 µW typical - supports low-power sleep states in battery-backed or energy-sensitive applications |
| Package | 64-pin TQFP (PNG64), 14 mm × 14 mm × 1.4 mm - surface-mount compatible with standard reflow profiles |
Pinout & Package
70V05L35PF is housed in a 64-pin thin quad flatpack (TQFP, package code PNG64), with 32 pins per side, exposed thermal pad, and 0.5 mm pitch. Pin functions are strictly defined per port (Left/Right), with dedicated I/O0L–I/O7L, I/O0R–I/O7R, address (A0L–A12L / A0R–A12R), and control (CEL/CER, OEL/OER, R/WL/R/WR, BUSYL/BUSYR, INTL/INTR, SEM, M/S).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low enable per port; controls power-down entry and output driver state independently |
| OEL / OER | Output Enable (Left / Right) | Active-low tri-state control for respective I/O bus; allows shared data bus usage in multiplexed systems |
| R/WL / R/WR | Read/Write Control (Left / Right) | Active-low write strobe; determines direction of data transfer on each port's I/O lines |
| BUSYL / BUSYR | BUSY Flag (Left / Right) | Push-pull output (Master) or input (Slave); signals arbitration status during address/contention events |
| M/S | Master/Slave Select | VIH configures device as Master (BUSY outputs); VIL configures as Slave (BUSY inputs); enables cascaded 16-bit+ systems |
| SEML / SEMR | Semaphore Enable (Left / Right) | Controls access to 8-bit semaphore register bank; required for inter-processor synchronization |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous, independent reads/writes from two processors or cores without arbitration overhead or wait states |
| On-Chip Port Arbitration Logic | Resolves contention automatically via BUSY assertion with configurable timing (tAPS, tBDD), eliminating need for external logic |
| Hardware Semaphore Support | Eight dedicated flags accessible via A0–A2 address lines - provides atomic lock/unlock for critical section protection |
| Interrupt Generation (INTL/INTR) | Asynchronous interrupt output triggered by write to designated interrupt-set address - enables event-driven system response |
| Master/Slave Cascading | Single M/S pin enables seamless 16-bit+ word expansion using multiple 70V05L35PF devices without external decoding |
Applications
| Industrial Motion Controller | Digital Signal Processor Interface |
|---|---|
|
Use Scenario: Real-time servo loop coordination between motion controller CPU and FPGA-based PWM generator. IC Role / Device Role / Timing Role: Shared memory buffer for position setpoints, velocity commands, and feedback data; dual-port enables concurrent read/write without pipeline stalls. Use Value: 35 ns access time ensures sub-µs data exchange, meeting 20 kHz servo update requirements while eliminating software mutex overhead. |
Use Scenario: High-bandwidth data exchange between DSP and host ARM processor in audio processing engine. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-wait-state FIFO and parameter table store; left port for DSP, right for ARM. Use Value: Hardware semaphore support enables deterministic, lock-free synchronization of filter coefficient updates and buffer pointers. |
| Telecom Line Card Buffer | Redundant Control System Memory |
|
Use Scenario: Packet buffering and header modification in carrier-grade Ethernet switch line card with dual CPU architecture. IC Role / Device Role / Timing Role: Shared packet descriptor memory accessed concurrently by traffic manager and classification engine. Use Value: BUSY arbitration prevents write collisions during bursty traffic; 64-pin TQFP fits high-density routing constraints. |
Use Scenario: Fault-tolerant voting system where primary and backup controllers maintain synchronized state. IC Role / Device Role / Timing Role: Dual-port SRAM stores mirrored control registers and status flags; one port for primary, one for backup. Use Value: Interrupt flag (INTL/INTR) signals state changes instantly across domains; industrial temp rating ensures reliability in chassis environments. |
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 CY7C024AV-35AXC | 35 ns access, 8K × 8, 3.3V, but uses 56-pin SOJ package and lacks integrated BUSY arbitration logic | Requires external arbitration circuitry for true concurrent access; not drop-in for M/S cascading | Select when board layout accommodates SOJ and external logic is acceptable for cost optimization |
| Renesas R1EX24002AS0I#U0 | 35 ns access, 8K × 8, 3.3V, 64-pin TQFP, but no semaphore or interrupt features; only basic dual-port functionality | Cannot replace 70V05L35PF in systems relying on hardware semaphores or interrupt-driven synchronization | Select for simpler dual-access use cases where arbitration and sync primitives are handled in firmware |
Compared with CY7C024AV-35AXC and R1EX24002AS0I#U0, the 70V05L35PF uniquely delivers integrated arbitration, semaphore, and interrupt logic in a 64-pin TQFP - reducing BOM count and PCB area while enabling deterministic real-time inter-processor communication.
Availability
70V05L35PF is available at Aetrix Electronics and suitable for industrial motion control, telecom infrastructure, and redundant control systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for 70V05L35PF 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 company specializing in timing, memory interface, and RF solutions for high-performance computing and communications.
The 70V05L35PF belongs to IDT's legacy dual-port SRAM product line, designed specifically for real-time embedded systems requiring deterministic, contention-free memory sharing between heterogeneous processors or accelerators.
FAQ
What is the maximum operating frequency supported by the 70V05L35PF?
The 70V05L35PF does not specify a clock frequency; it is an asynchronous SRAM. Its performance is defined by access time (35 ns max) and cycle time (tRC = 35 ns). Maximum effective throughput depends on system-level timing margins and control signal setup/hold requirements - typically supporting up to ~28.5 MHz sustained random access in well-designed interfaces.
Does the 70V05L35PF support 5V logic levels?
No, the 70V05L35PF operates exclusively at 3.3 V ± 0.3 V and is not 5V-tolerant. All inputs must remain within VIL ≤ 0.8 V and VIH ≥ 2.0 V relative to VDD = 3.3 V. Interfacing with 5V systems requires level-shifting circuitry on all control, address, and data lines.
How does the M/S pin affect BUSY pin behavior in the 70V05L35PF?
In the 70V05L35PF, when M/S = VIH, the device operates as Master: BUSYL and BUSYR are push-pull outputs reflecting local arbitration status. When M/S = VIL, it operates as Slave: BUSYL and BUSYR become inputs, and external BUSY signals from a Master device control write inhibition - enabling hierarchical multi-device configurations.
Can the 70V05L35PF be used without connecting all VDD and VSS pins?
No. The 70V05L35PF datasheet explicitly states: "All VDD pins must be connected to power supply" and "All GND pins must be connected to ground supply." Failure to connect all power/ground pins risks uneven current distribution, signal integrity degradation, and potential device malfunction or premature failure.
What is the purpose of the SEM pin in the 70V05L35PF?
The SEM pin in the 70V05L35PF enables access to the internal 8-bit semaphore register bank. When SEM = VIL and CE = VIH, the device enters semaphore mode - allowing read/write operations to semaphore flags via I/O0–I/O7 and A0–A2. This provides hardware-accelerated inter-processor synchronization without software polling or shared-memory locks.
70V05L35PF 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:
- 35ns
- Access Time:
- 35 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)
70V05L35PF FAQ
1.How can I place an order for 70V05L35PF through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V05L35PF 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 70V05L35PF reliable?
The price and inventory of 70V05L35PF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V05L35PF is usually 5 days.
3.What payment methods are accepted for 70V05L35PF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V05L35PF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V05L35PF?
70V05L35PF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V05L35PF 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 70V05L35PF?
For technical support, including 70V05L35PF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V05L35PF requirements.
6.How does Aetrix verify that 70V05L35PF is sourced from the original manufacturer or authorized distributors?
All 70V05L35PF 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 70V05L35PF meets industry standards.
7.What is the process for return or replacement of 70V05L35PF?
All 70V05L35PF units undergo pre-shipment inspection (PSI). If there is an issue with 70V05L35PF, 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 70V05L35PF part is unused and in its original packaging.
Return procedure for 70V05L35PF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V05L35PF Tags
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