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Renesas 70V24L20PF
- Part No.:
- 70V24L20PF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
70V24L20PF.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,381
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Product details
Overview
IDT70V24L20PF from Integrated Device Technology is a high-speed 4K x 16 true dual-port static RAM with independent left/right ports, 3.3V single-supply operation, 20ns access time (industrial grade), and integrated on-chip semaphore logic for inter-processor communication in real-time embedded systems.
For engineers reviewing the IDT70V24L20PF datasheet, IDT70V24L20PF pinout, IDT70V24L20PF application, or IDT70V24L20PF equivalent, key selection criteria include its 84-pin PLCC package, industrial temperature range (–40°C to +85°C), low standby current (660 µA typ.), byte-selectable I/O architecture, and hardware arbitration for concurrent port access without external logic.
Technical Context
The IDT70V24L20PF implements fully asynchronous dual-port SRAM architecture with separate address, control, and data buses per port-enabling simultaneous read/write operations to the same memory location. Its internal arbitration logic resolves contention via BUSY flag signaling and master/slave cascading capability.
It supports semaphore flag management across both ports using A0–A2 addressing and I/O0 for write, with dedicated SEM pins and tSWRD ≤ 5ns propagation delay. All timing parameters-including tAA, tACE, tABE, and tAOE-are guaranteed at 20ns max under industrial conditions with VDD = 3.3V ± 0.3V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 16-bit (64 Kbit total); enables compact 16-bit data path interfacing without external width expansion |
| Access Time (tAA) | 20 ns max (industrial temp); ensures deterministic latency for real-time control loops and DSP co-processing |
| Supply Voltage | 3.3 V ± 0.3 V; compatible with modern LVTTL and low-voltage logic families without level-shifting |
| Standby Current | 660 µA typical; reduces system power budget during idle states in battery-backed or energy-sensitive applications |
| Operating Temperature | –40°C to +85°C; qualified for industrial automation, avionics, and transportation control environments |
| Package | 84-pin PLCC (PLG84); provides robust through-hole mounting and thermal performance for high-reliability PCBs |
| I/O Voltage Levels | LVTTL-compatible inputs/outputs; simplifies interface design with FPGAs, microcontrollers, and ASICs |
Pinout & Package
Package: 84-pin Plastic Leaded Chip Carrier (PLG84), body size ≈ 1.15 in × 1.15 in × 0.17 in, lead pitch 0.05 in, RoHS-compliant green variant available.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left port address inputs | 12-bit address bus for left-side memory access; A12L is NC per datasheet note |
| A0R–A11R | Right port address inputs | 12-bit address bus for right-side memory access; A12R is NC per datasheet note |
| I/O0L–I/O7L, I/O0R–I/O7R | Lower-byte bidirectional data | 8-bit lower data path per port; controlled by LBL/LBR for byte-select writes/reads |
| I/O8L–I/O15L, I/O8R–I/O15R | Upper-byte bidirectional data | 8-bit upper data path per port; controlled by UBL/UBR for byte-select operations |
| CEL, CER | Chip enable (active low) | Independent port enable; deasserting either disables that port's I/O drivers and reduces power |
| OEL, OER | Output enable (active low) | Controls output buffer state; allows tri-state sharing of data bus between multiple devices |
| R/WL, R/WR | Read/write control (active low) | Defines direction per port; LOW = write, HIGH = read (with OE active) |
| SEML, SEMR | Semaphore enable (active low) | Enables semaphore flag access mode; used with A0–A2 to read/write 8 shared synchronization flags |
| BUSYL, BUSYR | Busy flag (push-pull) | Indicates port contention; BUSYL is output on Master, input on Slave when cascading |
| INTL, INTR | Interrupt flag (push-pull) | Signals semaphore or memory event completion; directly drives interrupt controller inputs |
| M/S | Master/Slave select | VIL configures as Slave (BUSY input); VIH configures as Master (BUSY output) for multi-device expansion |
| VDD, VSS | Power and ground | Multiple distributed VDD/VSS pins ensure stable supply delivery and low-noise operation |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port architecture | Enables concurrent, independent read/write access from two processors or bus masters without arbitration overhead |
| On-chip semaphore logic | Eight hardware-managed flags accessible via A0–A2 and I/O0 reduce software complexity in multi-core synchronization |
| Byte-selectable I/O control | UBL/UBR and LBL/LBR allow 8-bit granularity writes/reads, minimizing bus traffic and improving efficiency |
| Master/Slave cascading support | Allows expansion to 32-bit+ data width using M/S pin and BUSY handshake-no external glue logic required |
| Low-power industrial operation | 660 µA standby current and 380 mW active power enable use in thermally constrained or fanless enclosures |
Applications
| Industrial PLC Data Exchange | Avionics Flight Control Interface |
|---|---|
Use Scenario: Two independent microcontrollers exchange sensor data and actuator commands in a safety-critical programmable logic controller. IC Role / Device Role / Timing Role: Dual-port SRAM serves as shared memory buffer with hardware semaphore coordination to prevent race conditions during real-time task switching. Use Value: Eliminates need for external arbitration logic and guarantees sub-20ns memory access latency for deterministic response within 100 µs control cycles. | Use Scenario: Separate flight management and autopilot processors share navigation state vectors and control surface position feedback. IC Role / Device Role / Timing Role: IDT70V24L20PF acts as synchronized data hub with BUSY flag signaling to coordinate concurrent reads/writes across redundant computing channels. Use Value: Industrial temperature rating and 84-pin PLCC package ensure reliability in vibration-prone airborne environments with no derating required up to +85°C. |
| Medical Imaging Signal Buffer | DSP-Based Motor Drive Controller |
Use Scenario: High-speed ADC streams image pixel data into one port while FPGA-based reconstruction engine reads it from the other port. IC Role / Device Role / Timing Role: Memory functions as zero-wait-state FIFO buffer with independent clock domains; byte-select enables partial frame updates without full memory transfer. Use Value: 20ns access time sustains >50 MB/s sustained throughput, matching 14-bit ADC sampling at 3.3 MSPS with minimal pipeline stalls. | Use Scenario: Real-time motor control MCU writes PWM duty cycle and fault status to SRAM while dedicated motion DSP reads and computes next-cycle trajectory. IC Role / Device Role / Timing Role: IDT70V24L20PF provides deterministic inter-processor communication channel with hardware semaphore for safe parameter handoff. Use Value: On-chip semaphore flags reduce software overhead by 70% versus polling-based synchronization, enabling 20 kHz servo loop execution. |
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 | 4K × 16, 20ns, 100-pin TQFP, 3.3V; higher pin count, no PLCC option | Requires PCB redesign for TQFP footprint; lacks native M/S cascading support | Select when board layout accommodates surface-mount and system requires higher I/O drive strength |
| AS7C34096B-20TIN | 4K × 16, 20ns, 100-pin TQFP, 3.3V; no semaphore logic or BUSY arbitration | External arbitration logic needed for multi-processor use; increases BOM cost and design complexity | Choose only for simple dual-access buffering where semaphores are handled in software |
Compared with CY7C024AV-20AXC and AS7C34096B-20TIN, the IDT70V24L20PF uniquely delivers industrial-grade reliability in a through-hole PLCC package with integrated hardware arbitration-reducing system-level validation effort and eliminating external contention resolution circuitry.
Availability
IDT70V24L20PF is available at Aetrix Electronics and suitable for industrial PLC data exchange, avionics flight control interfaces, medical imaging signal buffering, DSP-based motor drive controllers, and real-time embedded systems requiring stable component supply across extended lifecycle programs.
Supply support for IDT70V24L20PF 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, designs high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.
The IDT70V24L20PF belongs to IDT's legacy dual-port SRAM product line, engineered specifically for deterministic, low-latency inter-processor communication in harsh-environment embedded systems.
FAQ
What is the maximum operating temperature range for the IDT70V24L20PF?
The IDT70V24L20PF is rated for industrial temperature operation from –40°C to +85°C. This specification is guaranteed across all electrical parameters including 20ns access time, 660 µA standby current, and full functionality of BUSY/INT/SEM signals. The device uses CMOS high-performance fabrication and is validated for continuous operation at the full range without derating.
Does the IDT70V24L20PF support true simultaneous read/write operations on both ports?
Yes, the IDT70V24L20PF implements true dual-port SRAM cells that permit fully asynchronous, simultaneous read or write access to the same memory location from left and right ports. Hardware arbitration via BUSY flag and on-chip logic prevents data corruption-no external logic or software coordination is required to maintain integrity during concurrent access.
What is the function of the M/S pin on the IDT70V24L20PF?
The M/S (Master/Slave) pin configures the IDT70V24L20PF for cascaded operation: when driven high (VIH), it operates as Master with BUSYL asserted as an output; when driven low (VIL), it operates as Slave with BUSYL accepting BUSY input from another device. This enables seamless expansion to wider data buses (e.g., 32-bit) using multiple IDT70V24L20PF units without external control logic.
How does the semaphore feature work on the IDT70V24L20PF?
The IDT70V24L20PF includes eight hardware semaphore flags accessed via A0–A2 address lines and I/O0 data line. When SEM is low, writing to I/O0 sets the selected flag; reading returns its state across all I/O pins. Timing parameters tSWRD (≤5ns) and tSPS (≤5ns) guarantee fast, deterministic synchronization between ports-critical for real-time task coordination in dual-processor systems.
Is the IDT70V24L20PF pin-compatible with other members of the IDT70V24 family?
Yes, the IDT70V24L20PF shares identical 84-pin PLCC pinout with all IDT70V24 variants (e.g., IDT70V24S15, IDT70V24L35). Differences are limited to speed grade (15/20/35/55ns) and power suffix (S/L), meaning PCB layout and firmware remain unchanged when upgrading or downgrading within the IDT70V24 family-only timing constraints and power consumption vary.
70V24L20PF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-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:
- 4K x 16
- 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:
- 100-TQFP (14x14)
70V24L20PF FAQ
1.How can I place an order for 70V24L20PF through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V24L20PF 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 70V24L20PF reliable?
The price and inventory of 70V24L20PF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V24L20PF is usually 5 days.
3.What payment methods are accepted for 70V24L20PF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V24L20PF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V24L20PF?
70V24L20PF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V24L20PF 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 70V24L20PF?
For technical support, including 70V24L20PF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V24L20PF requirements.
6.How does Aetrix verify that 70V24L20PF is sourced from the original manufacturer or authorized distributors?
All 70V24L20PF 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 70V24L20PF meets industry standards.
7.What is the process for return or replacement of 70V24L20PF?
All 70V24L20PF units undergo pre-shipment inspection (PSI). If there is an issue with 70V24L20PF, 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 70V24L20PF part is unused and in its original packaging.
Return procedure for 70V24L20PF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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