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Renesas 70V09L20PFGI
- Part No.:
- 70V09L20PFGI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
70V09L20PFGI.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,940
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Product details
Overview
70V09L20PFGI from IDT (now Renesas) is a high-speed, 128K × 8 true dual-ported static RAM with independent left/right ports, 20 ns max access time (industrial grade), 3.3 V ±0.3 V single supply, and integrated hardware semaphore/arbiration logic. It enables simultaneous read/write to the same memory location in real-time interprocessor communication systems.
For engineers reviewing the 70V09L20PFGI datasheet, 70V09L20PFGI pinout, 70V09L20PFGI application, or 70V09L20PFGI equivalent, this page delivers verified timing specs (tAA = 20 ns, tRC = 20 ns), BUSY/INT/SEM signal behavior, TQFP-100 package mapping, industrial temperature support (–40°C to +85°C), and validated alternatives for dual-port SRAM migration.
Technical Context
The 70V09L20PFGI implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port-no shared timing constraints between left and right sides. Its on-chip arbitration logic resolves contention via push-pull BUSY flags (BUSYL/BUSYR), while semaphore latches (A0–A2 addressed, I/O0 write / I/O0–I/O7 read) provide hardware-assisted token passing without software overhead.
It supports MASTER/SLAVE cascading via M/S pin: as MASTER (M/S = VIH), BUSY pins output active-high flags; as SLAVE (M/S = VIL), BUSY pins become write-inhibit inputs. Dual CE0/CE1 enables allow depth expansion without external logic, and automatic power-down reduces standby current to 0.2 mA (full CMOS standby).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 128K × 8 bits (1024 Kbit); supports 16-bit+ bus width expansion via MASTER/SLAVE mode |
| Access Time (tAA) | 20 ns max (industrial temp, –40°C to +85°C); guarantees deterministic latency for real-time co-processor handshaking |
| Supply Voltage | 3.3 V ±0.3 V; LVTTL-compatible I/O levels eliminate level-shifting in 3.3 V system designs |
| Operating Temp | –40°C to +85°C; qualified for industrial embedded control, avionics data buffers, and telecom line cards |
| Standby Current | 0.2 mA typical (ISB3, full CMOS standby); enables low-power sleep modes in battery-backed or energy-sensitive systems |
| Package | 100-pin TQFP (14 mm × 14 mm × 1.4 mm); RoHS-compliant, green variant available per ordering code |
| Bus Arbitration | Hardware BUSY flag with tBDD ≤ 17 ns; blocks conflicting writes at silicon level-no firmware polling required |
Pinout & Package
70V09L20PFGI is housed in a 100-pin Thin Quad Flatpack (TQFP) with 0.5 mm pitch, body size 14 mm × 14 mm × 1.4 mm. All VCC and GND pins must be connected per layout guidelines; NC pins are no-connect and must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE0L, CE1L / CE0R, CE1R | Dual chip enable per port | Independent port selection; enables depth expansion without glue logic-CE0L+CE1L both low selects left port |
| R/WL, R/WR | Read/write control | Active-low; controls direction of data flow on respective I/O bus-no OE needed for reads when R/W = HIGH |
| OEL, OER | Output enable | Active-low; overrides R/W state to force I/O pins into high-Z during shared-bus contention or debug states |
| A0L–A16L / A0R–A16R | Address inputs | 17-bit addressing per port (128K = 2¹⁷); A0–A2 used for semaphore flag addressing (8 latches) |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional data | 8-bit parallel interface per port; I/O0 used to write semaphore tokens; all 8 bits read back semaphore state |
| SEML, SEMR | Semaphore enable | Active-low; enables access to 8 semaphore latches instead of main memory array-CE = VIH, SEM = VIL required |
| INTL, INTR | Interrupt flags | Open-drain compatible (push-pull); asserted when opposite port writes to mailbox addresses 1FFFEh (INTL) or 1FFFFh (INTR) |
| BUSYL, BUSYR | Arbitration status | Push-pull outputs (MASTER) or inputs (SLAVE); indicates port-to-port address collision-no pull-ups required |
| M/S | Master/Slave select | VIL configures as SLAVE (BUSY pins input); VIH configures as MASTER (BUSY pins output)-enables multi-chip arrays |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables simultaneous read/write to identical addresses-critical for lock-free interprocessor messaging without software serialization |
| Hardware semaphore logic | Eight dedicated binary latches (A0–A2 addressable) accessed via I/O0 write / I/O0–I/O7 read-eliminates need for atomic software semaphores |
| Configurable BUSY arbitration | Push-pull BUSY outputs (MASTER) or write-inhibit inputs (SLAVE); supports scalable multi-chip arrays with external AND for depth expansion |
| Asynchronous dual-port operation | No clock required; left/right ports operate independently-removes timing skew concerns in heterogeneous processor systems |
| Low-power standby modes | 0.2 mA ISB3 (full CMOS standby); 35 mA ISB1 (TTL standby); enables dynamic power gating per port using CE0/CE1 |
Applications
| Industrial PLC Data Exchange | Avionics Sensor Fusion Buffer |
|---|---|
|
Use Scenario: Two independent PLC CPUs share real-time I/O status and motion control commands via shared memory. IC Role / Device Role / Timing Role: 70V09L20PFGI acts as a non-blocking, hardware-synchronized message buffer-left port serves CPU A, right port serves CPU B. Use Value: 20 ns access time ensures sub-microsecond inter-CPU handshaking; BUSY logic prevents corrupted writes during concurrent updates to shared registers. |
Use Scenario: Radar and inertial measurement units feed time-critical sensor data into a central flight controller running deterministic real-time OS. IC Role / Device Role / Timing Role: 70V09L20PFGI provides zero-wait-state dual-port access for sensor preprocessing (left port) and flight control algorithm execution (right port). Use Value: Hardware semaphore flags coordinate access to shared calibration tables-avoiding software mutex delays that could exceed 10 µs jitter budget. |
| Telecom Line Card Packet Buffer | Medical Imaging DICOM Gateway |
|
Use Scenario: High-throughput packet processors on a telecom line card exchange frame metadata and buffer pointers across FPGA and ARM subsystems. IC Role / Device Role / Timing Role: 70V09L20PFGI serves as a descriptor ring buffer-FPGA writes packet headers (left port), ARM reads and forwards (right port). Use Value: 128K × 8 capacity holds >1000 descriptors; tRC = 20 ns sustains >50 M transfers/sec-matching 10G Ethernet line rate processing demands. |
Use Scenario: MRI scanner front-end acquires raw image frames while backend server compresses and formats DICOM packets for PACS network transmission. IC Role / Device Role / Timing Role: 70V09L20PFGI functions as a ping-pong frame buffer-acquisition engine writes (left port), compression engine reads (right port). Use Value: Industrial temperature rating (–40°C to +85°C) ensures reliability in fanless medical enclosures; low standby current extends uptime during idle scanning intervals. |
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, 128K × 8, 3.3 V, but uses 3-state BUSY outputs requiring external pull-ups; no integrated semaphore logic | Lacks hardware semaphore latches-requires software-managed mutual exclusion, increasing firmware complexity and latency | Choose when legacy Cypress footprint compatibility is required and semaphore functionality is implemented in firmware |
| AS7C3128A-20JIN | 20 ns access, 128K × 8, 3.3 V, but only single-port architecture with external arbitration logic; no native BUSY/INT/SEM signals | Requires discrete gates or CPLD for port arbitration-increases BOM count, PCB area, and timing validation effort | Choose only if cost sensitivity outweighs design cycle time; not suitable for true dual-port timing-critical use cases |
Compared with CY7C028V-20AXC and AS7C3128A-20JIN, the 70V09L20PFGI uniquely integrates arbitration, semaphore, and interrupt logic in a single 100-pin TQFP-reducing system-level complexity, eliminating external components, and guaranteeing sub-20 ns deterministic access without software intervention.
Availability
70V09L20PFGI is available at Aetrix Electronics and suitable for industrial PLC data exchange, avionics sensor fusion buffers, and telecom line card packet buffers requiring stable component supply across extended product lifecycles.
Supply support for 70V09L20PFGI 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 70V09L20PFGI belongs to IDT's high-speed dual-port SRAM product line, designed specifically for real-time interprocessor communication where deterministic latency, hardware arbitration, and zero-software-overhead resource sharing are critical.
FAQ
What is the maximum operating temperature range certified for the 70V09L20PFGI?
70V09L20PFGI is rated for industrial temperature operation from –40°C to +85°C. This specification is validated per the datasheet's Recommended DC Operating Conditions table and applies to all timing parameters including tAA = 20 ns and tRC = 20 ns. The device maintains full functionality-including BUSY arbitration, semaphore flag integrity, and interrupt assertion-across this full range without derating.
How does the M/S pin affect BUSY pin behavior in the 70V09L20PFGI?
When M/S = VIH, 70V09L20PFGI operates as MASTER: BUSYL and BUSYR are push-pull outputs asserting active-high during port-to-port address contention. When M/S = VIL, it operates as SLAVE: BUSYL and BUSYR become write-inhibit inputs-tying either LOW blocks writes to that port regardless of R/W state. This enables scalable multi-chip arrays using one MASTER to drive BUSY signals to multiple SLAVES.
Can the 70V09L20PFGI perform simultaneous read and write operations on the same memory address?
Yes-the 70V09L20PFGI supports true simultaneous access to identical addresses: one port may read while the other writes. However, if both ports attempt writes to the same location, BUSY logic asserts within 17 ns (tBDD max) to gate the later write. The memory cell itself permits concurrent R/W, but hardware arbitration ensures data coherency without software locks.
What are the valid address ranges for interrupt mailbox locations in the 70V09L20PFGI?
The 70V09L20PFGI uses fixed interrupt mailbox addresses: INTL is asserted when the right port writes to 1FFFEh (hex), and INTR is asserted when the left port writes to 1FFFFh (hex). Both locations are standard SRAM cells-user-defined 8-bit values can be stored there. Clearing requires the asserting port to read (for INTR) or access with OEL/OER = VIL (for INTL), per Truth Table IV.
Is external pull-up resistance required on BUSY pins when using the 70V09L20PFGI in MASTER mode?
No-BUSYL and BUSYR are push-pull (totem-pole) outputs in MASTER mode (M/S = VIH), as explicitly stated in Note 2 of the datasheet's Functional Block Diagram. They drive actively HIGH or LOW without external components. Pull-ups are only needed if interfacing with open-drain receivers, which is not the default or recommended configuration per IDT's application guidance.
70V09L20PFGI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K 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
70V09L20PFGI FAQ
1.How can I place an order for 70V09L20PFGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V09L20PFGI 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 70V09L20PFGI reliable?
The price and inventory of 70V09L20PFGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V09L20PFGI is usually 5 days.
3.What payment methods are accepted for 70V09L20PFGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V09L20PFGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V09L20PFGI?
70V09L20PFGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V09L20PFGI 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 70V09L20PFGI?
For technical support, including 70V09L20PFGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V09L20PFGI requirements.
6.How does Aetrix verify that 70V09L20PFGI is sourced from the original manufacturer or authorized distributors?
All 70V09L20PFGI 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 70V09L20PFGI meets industry standards.
7.What is the process for return or replacement of 70V09L20PFGI?
All 70V09L20PFGI units undergo pre-shipment inspection (PSI). If there is an issue with 70V09L20PFGI, 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 70V09L20PFGI part is unused and in its original packaging.
Return procedure for 70V09L20PFGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V09L20PFGI 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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AT24C04C-SSHM-T
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24LC01BT-I/SN
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AT24C08C-STUM-T
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