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Renesas 70V08L20PFI8
- Part No.:
- 70V08L20PFI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
70V08L20PFI8.pdf
- Description:
- IC SRAM 512KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,732
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Product details
Overview
70V08L20PFI8 from IDT (now Renesas) is a high-speed, 3.3V, 64K × 8 true dual-ported static RAM with independent left/right ports, 20 ns max access time (industrial grade), LVTTL-compatible I/O, and on-chip semaphore/arbitration logic. It enables simultaneous read/write access to the same memory location in real-time interprocessor communication systems.
For engineers reviewing the 70V08L20PFI8 datasheet, 70V08L20PFI8 pinout, 70V08L20PFI8 application, or 70V08L20PFI8 equivalent, key selection criteria include dual-port arbitration timing (tAPS = 5 ns), BUSY flag behavior under M/S control, semaphore flag update pulse (tSOP = 10 ns), and industrial temperature support (–40°C to +85°C).
Technical Context
The 70V08L20PFI8 implements fully asynchronous dual-port operation with separate address, data, and control buses per port. Its on-chip arbitration logic resolves contention via push-pull BUSY flags and supports both address-match and CE-controlled arbitration modes (tBAA/tBAC ≤ 20 ns).
It integrates dedicated semaphore registers (8 flags, addressed by A0–A2) accessible when CE = VIH and SEM = VIL, with tSAA ≤ 20 ns and tSOP = 10 ns. Interrupt signaling uses fixed mailbox addresses (FFFEH/FFFFH), with tINS ≤ 20 ns and tINR ≤ 20 ns for flag assertion/clearing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 8 bits (512 Kbit), true dual-port SRAM with independent left/right arrays |
| Access Time (tAA) | 20 ns max - guarantees full-speed operation in industrial-temp 16-bit bus systems without wait states |
| Supply Voltage | 3.3 V ± 0.3 V - single LVTTL-compatible rail; eliminates level-shifting in 3.3V system designs |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded control, motor drives, and telecom line cards |
| Standby Current (ISB3) | 0.2 mA typ - ultra-low power full standby mode with CMOS-level inputs (VIN < 0.2 V or > VDD – 0.2 V) |
| Bus Contention Resolution | Hardware semaphore + BUSY flag arbitration - enables deterministic, lock-free interprocessor synchronization without external logic |
| Package | 100-pin TQFP (14 mm × 14 mm × 1.4 mm) - surface-mount compatible with standard reflow profiles |
Pinout & Package
70V08L20PFI8 is housed in a 100-pin Thin Quad Flatpack (TQFP) with 0.5 mm pitch. Pin 1 is located at top-left corner (marked dot); package body measures 14 mm × 14 mm × 1.4 mm. All VDD and VSS pins must be decoupled per layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE0L, CE1L / CE0R, CE1R | Chip Enable (Left/Right) | Dual enables per port allow independent power-down and depth expansion without glue logic |
| R/WL, R/WR | Read/Write Control | Active-low bidirectional control - determines data direction on I/O0–I/O7 for each port |
| OEL, OER | Output Enable | Separate OE per port enables concurrent read/write operations with output tri-state control |
| A0L–A15L / A0R–A15R | Address Inputs | Fully independent 16-bit address buses - support simultaneous access to any memory location |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional Data Bus | 8-bit parallel I/O per port - true dual-port allows simultaneous read+write to same address |
| SEML, SEMR | Semaphore Enable | Enables access to 8 semaphore flags (A0–A2) - required for hardware mutex coordination |
| INTL, INTR | Interrupt Flag Outputs | Push-pull outputs - signal inter-processor events (e.g., mailbox write to FFFEH/FFFFH) |
| BUSYL, BUSYR | Arbitration Busy Flags | Push-pull BUSY signals - indicate port contention; M/S pin configures master (output) or slave (input) role |
| M/S | Master/Slave Select | VIH configures BUSY as output (master); VIL configures BUSY as input (slave) - enables cascaded multi-device systems |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Simultaneous independent read/write access to identical memory locations - eliminates software locks in real-time IPC |
| Hardware Semaphore Logic | Eight dedicated flags (A0–A2) with atomic read/write - enables deterministic resource sharing across CPUs/FPGAs |
| On-Chip Arbitration | Priority-based BUSY flag generation (tAPS = 5 ns) - resolves port contention without external arbitration logic |
| Low-Power Standby Modes | ISB3 = 0.2 mA typ in full CMOS standby - extends uptime in battery-backed or energy-sensitive systems |
| Industrial Temperature Range | –40°C to +85°C operation - validated for harsh environments including factory automation and transportation electronics |
Applications
| Industrial PLC Communication Hub | Real-Time Motor Control Co-Processor |
|---|---|
Use Scenario: Two microcontrollers exchange motion commands and status data via shared memory in a programmable logic controller. IC Role / Device Role / Timing Role: 70V08L20PFI8 serves as the deterministic, low-latency interprocessor communication buffer with hardware semaphore coordination. Use Value: Eliminates polling delays and race conditions; tSOP = 10 ns semaphore update ensures sub-microsecond resource handoff between control loops. | Use Scenario: An FPGA handles high-speed PWM generation while an ARM Cortex-M core manages safety monitoring and diagnostics. IC Role / Device Role / Timing Role: 70V08L20PFI8 provides synchronized access to shared control registers and fault logs using BUSY-flag arbitration. Use Value: Prevents write collisions during critical updates; tBDD ≤ 35 ns ensures valid data before BUSY deassertion, guaranteeing safe state transitions. |
| Telecom Line Card Data Buffer | Avionics Sensor Fusion Module |
Use Scenario: Dual DSPs process upstream/downstream packet streams in a wireless baseband unit, sharing configuration tables and statistics. IC Role / Device Role / Timing Role: 70V08L20PFI8 acts as the zero-wait-state shared memory with interrupt-driven mailbox signaling (FFFEH/FFFFH). Use Value: tINS ≤ 20 ns interrupt set time enables immediate notification of new packet metadata - reducing latency in adaptive modulation schemes. | Use Scenario: Multiple sensor processors (IMU, barometer, GNSS) write timestamped measurements into a common buffer for centralized fusion. IC Role / Device Role / Timing Role: 70V08L20PFI8 functions as the fault-tolerant, arbitration-managed shared memory with M/S-configured master/slave cascading. Use Value: Push-pull BUSY outputs (not open-drain) ensure robust flag integrity in EMI-prone avionics bays; industrial temp rating supports extended flight envelope operation. |
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-20AXC | 20 ns access, 64K × 16 organization, 3.3V supply, but no integrated semaphore logic; requires external arbitration circuitry | Requires additional logic for semaphore/mutex functions; suitable only where software coordination suffices | Select when wider data bus (16-bit) is mandatory and hardware semaphores are unnecessary |
| AS7C364B-20TIN | 20 ns access, 64K × 8, 3.3V, but single-port only; lacks dual-port arbitration, BUSY, INT, or SEM signals | Cannot support true simultaneous access; requires external multiplexing or time-slicing for two-master systems | Select only for cost-sensitive, non-concurrent applications where interprocessor latency is acceptable |
Compared with CY7C028V-20AXC and AS7C364B-20TIN, the 70V08L20PFI8 uniquely delivers integrated hardware arbitration, semaphore, and interrupt logic in a 64K × 8 dual-port configuration - eliminating external components and reducing PCB area and design risk in real-time co-processor systems.
Availability
70V08L20PFI8 is available at Aetrix Electronics and suitable for industrial PLCs, real-time motor controllers, telecom line cards, and avionics sensor modules requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.
Supply support for 70V08L20PFI8 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
Renesas Electronics (formerly Integrated Device Technology) is a global semiconductor leader specializing in microcontrollers, analog, power management, and memory solutions for industrial, automotive, and communications markets.
The 70V08L20PFI8 belongs to IDT's legacy high-speed dual-port SRAM product line, engineered specifically for deterministic interprocessor communication in real-time embedded systems requiring hardware-enforced synchronization.
FAQ
What is the maximum operating temperature range for the 70V08L20PFI8?
The 70V08L20PFI8 is rated for industrial temperature operation from –40°C to +85°C. This specification is verified per the device's DC and AC electrical characteristics tables and applies across all supported speed grades and functional modes, including semaphore, interrupt, and BUSY arbitration operations.
Does the 70V08L20PFI8 support true simultaneous read/write to the same memory address?
Yes, the 70V08L20PFI8 implements true dual-ported SRAM cells that permit independent, asynchronous read and write operations to the exact same memory location from its left and right ports - a core capability confirmed in the Functional Description and Truth Table II of the official datasheet.
How does the M/S pin affect BUSY signal behavior on the 70V08L20PFI8?
When M/S = VIH, BUSYL and BUSYR function as push-pull outputs indicating port contention; when M/S = VIL, they become inputs that inhibit writes on the respective port. This dual-role configuration enables flexible master/slave cascading in multi-device systems, as defined in Notes 1 and 2 of the Functional Block Diagram.
What is the purpose of the SEM pins on the 70V08L20PFI8?
The SEML and SEMR pins enable access to the on-chip 8-bit semaphore register file. When SEM = VIL and CE = VIH, the device routes I/O0–I/O7 to semaphore flags (addressed by A0–A2), supporting atomic resource locking - a feature distinct from main memory access and critical for deadlock-free multiprocessing.
Can the 70V08L20PFI8 be used in a 16-bit data bus configuration?
Yes, the 70V08L20PFI8 supports 16-bit expansion via MASTER/SLAVE cascading using the M/S pin. Two devices can be configured so one operates as master (BUSY output) and the other as slave (BUSY input), enabling full-speed 16-bit word access without external logic, as detailed in the Description and Features sections.
70V08L20PFI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 512Kbit
- Memory Organization:
- 64K 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:
- 100-TQFP (14x14)
70V08L20PFI8 FAQ
1.How can I place an order for 70V08L20PFI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V08L20PFI8 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 70V08L20PFI8 reliable?
The price and inventory of 70V08L20PFI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V08L20PFI8 is usually 5 days.
3.What payment methods are accepted for 70V08L20PFI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V08L20PFI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V08L20PFI8?
70V08L20PFI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V08L20PFI8 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 70V08L20PFI8?
For technical support, including 70V08L20PFI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V08L20PFI8 requirements.
6.How does Aetrix verify that 70V08L20PFI8 is sourced from the original manufacturer or authorized distributors?
All 70V08L20PFI8 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 70V08L20PFI8 meets industry standards.
7.What is the process for return or replacement of 70V08L20PFI8?
All 70V08L20PFI8 units undergo pre-shipment inspection (PSI). If there is an issue with 70V08L20PFI8, 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 70V08L20PFI8 part is unused and in its original packaging.
Return procedure for 70V08L20PFI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V08L20PFI8 Tags
-
M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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