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Renesas 7282L12PAG8
- Part No.:
- 7282L12PAG8
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
7282L12PAG8.pdf
- Description:
- IC FIFO ASYNC 1KX9X2 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,940
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Product details
Overview
IDT7282L12PAG8 from Integrated Device Technology (IDT) is a CMOS dual asynchronous FIFO memory IC with two independent 1,024 × 9-bit data buffers, 12 ns access time, 5 V supply operation, and industrial temperature range support (–40°C to +85°C). It enables simultaneous read/write across separate clock domains in multiprocessing and rate-matching applications such as serial communication interfaces and bus bridging.
For engineers reviewing the IDT7282L12PAG8 datasheet, IDT7282L12PAG8 pinout, IDT7282L12PAG8 application, or IDT7282L12PAG8 equivalent, key selection considerations include dual-FIFO depth expansion capability, retransmit functionality, half-full flag support, TSSOP-56 package compatibility, and verified 12 ns timing performance under industrial conditions.
Technical Context
This device implements two fully independent asynchronous FIFOs sharing no internal address logic-each uses ring pointers for sequential data flow without external addressing. Read and write operations are controlled by dedicated R/W/RS/RT pins per FIFO, with status flags (EF, FF, HF) generated per channel.
It supports three primary operating modes: single-device (XI grounded), width expansion (parallel data paths), and depth expansion (daisy-chained via XI/XO). Retransmit (RT) resets only the read pointer and is disabled in depth expansion mode; half-full flag (XO/HF) operates only in single-device or width-expansion configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Depth | Dual 1,024 × 9-bit FIFOs - provides 1,024 words of buffering per channel with 9-bit data width supporting parity or control bits. |
| Access Time (tA) | 12 ns max - guarantees deterministic latency for high-speed data handoff between mismatched clock domains. |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V TTL/CMOS logic families and legacy industrial power rails. |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation and motor control systems. |
| Power Consumption | Active: 685 mW max; Power-down: 83 mW max - enables low-heat operation in dense PCB layouts without forced cooling. |
| Pin Count & Package | 56-pin TSSOP (PA code) - surface-mount footprint with 0.5 mm pitch, optimized for automated assembly and space-constrained designs. |
| Status Flags | Per-FIFO Empty (EF), Full (FF), and Half-Full (HF) - enables precise buffer management without host CPU polling overhead. |
Pinout & Package
Package: 56-pin Thin Shrink Small Outline Package (TSSOP), SO56-2, order code PA. Lead finish: SnPb (EOL as of June 15, 2018).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DA0–DA8, DB0–DB8 | Data Inputs (A/B) | Two independent 9-bit parallel input buses accepting data into FIFO A and FIFO B respectively. |
| QA0–QA8, QB0–QB8 | Data Outputs (A/B) | Three-state outputs delivering FIFO A/B contents; high-impedance when corresponding R is HIGH. |
| WA, WB | Write Enable (A/B) | Falling-edge-triggered write strobes; inhibit writes when respective FF = LOW. |
| RA, RB | Read Enable (A/B) | Falling-edge-triggered read strobes; inhibit reads when respective EF = LOW. |
| RSA, RSB | Reset (A/B) | Synchronous reset inputs that initialize both read/write pointers to location zero on active LOW. |
| FLA/RTA, FLB/RTB | First Load / Retransmit (A/B) | Dual-function pins: grounded for depth expansion; pulsed LOW for retransmit (read pointer reset) in single-device mode. |
| XIA, XIB | Expansion In (A/B) | Ground to enable single-device mode; connect to XO of prior device in depth expansion chain. |
| XOA/HFA, XOB/HFB | Expansion Out / Half-Full Flag (A/B) | In single-device mode: active-LOW half-full indicator; in depth expansion: daisy-chain pulse signal to next device. |
| EFA, EFB | Empty Flag (A/B) | Active-LOW output indicating FIFO A/B contains no valid data; used to gate read operations. |
| FFA, FFB | Full Flag (A/B) | Active-LOW output indicating FIFO A/B has no remaining space; used to gate write operations. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent FIFO architecture | Enables true bi-directional buffering-e.g., one FIFO handles transmit path while the other manages receive path without shared resource contention. |
| Retransmit (RT) capability | Resets only the read pointer to start position without affecting write pointer or data integrity-critical for protocol retransmission in UART or SPI bridge applications. |
| Half-Full Flag (HF) | Provides early warning at 512-word fill level (half of 1,024) to trigger proactive data consumption before full condition occurs. |
| Depth and width expansion support | Allows scalable memory capacity: depth expansion increases word count (e.g., 2× IDT7282L12PAG8 → 2,048 × 9); width expansion increases data bus width (e.g., 18-bit interface). |
| Asynchronous read/write with no address lines | Eliminates need for external address generation logic-data flows via R/W edge control and internal ring pointers, reducing system complexity. |
Applications
| Serial Communication Bridge | Industrial Bus Interface |
|---|---|
Use Scenario: Isolating UART or RS-232/485 transceivers from microcontroller peripherals with mismatched baud rates and interrupt latencies. IC Role / Device Role / Timing Role: Dual FIFO acts as rate-matching buffer-FIFO A absorbs incoming serial data; FIFO B feeds outgoing data-both operating asynchronously. Use Value: Prevents data loss during MCU servicing delays; eliminates software-based circular buffer management and associated CPU overhead. | Use Scenario: Interfacing legacy parallel buses (e.g., ISA, PC/104) with modern controllers requiring burst-mode transfers. IC Role / Device Role / Timing Role: IDT7282L12PAG8 serves as bidirectional width-expansion FIFO pair-18-bit data path formed by paralleling DA/QA and DB/QB buses. Use Value: Enables seamless 16-bit+ data transfer without glue logic; supports mixed-speed bus arbitration using EF/FF handshaking. |
| Multiprocessor Data Exchange | Real-Time Control Buffering |
Use Scenario: Synchronizing data exchange between two independent processors (e.g., DSP + ARM) running at different clock frequencies. IC Role / Device Role / Timing Role: Each processor accesses its own FIFO channel (A or B) with dedicated R/W/RS controls-no shared clocks or arbitration required. Use Value: Guarantees deterministic inter-processor latency; avoids race conditions and lock-step synchronization constraints. | Use Scenario: Storing sensor acquisition bursts (e.g., ADC samples) before real-time processing in PLC or motion controller. IC Role / Device Role / Timing Role: IDT7282L12PAG8 operates in single-device mode with RT pin triggering retransmission of latest sensor frame upon fault recovery. Use Value: Maintains data continuity after reset; HF flag alerts firmware to initiate DMA transfer before buffer overflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual asynchronous FIFO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT7282L15PAG8 | 15 ns access time vs. 12 ns; otherwise identical pinout, function, and specs. | Suitable where timing margin allows relaxed access time; lower cost in some volume scenarios. | Select IDT7282L12PAG8 when system-level setup/hold timing budgets require ≤12 ns propagation. |
| ON Semiconductor NB3N502DG | Single 1,024 × 9 FIFO; no dual-channel or retransmit capability; 10 ns access time; 3.3 V only. | Limited to unidirectional buffering; incompatible with dual-FIFO or RT-dependent protocols. | Only consider if design requires single FIFO + faster speed + 3.3 V operation-and can accept loss of retransmit and half-full features. |
Compared with IDT7282L15PAG8, IDT7282L12PAG8 delivers tighter timing control critical for high-throughput rate adaptation; versus NB3N502DG, it retains dual-channel independence and industrial-temperature retransmit functionality essential for robust embedded control.
Availability
IDT7282L12PAG8 is available at Aetrix Electronics and suitable for industrial automation, serial communications infrastructure, and embedded multiprocessor systems requiring stable component supply and long-term lifecycle support.
Supply support for IDT7282L12PAG8 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and sensor signal conditioning solutions before its acquisition by Renesas Electronics in 2019.
IDT7282L12PAG8 belongs to the IDT728x family of dual asynchronous FIFOs, designed specifically for high-reliability data buffering in industrial and communications equipment where clock domain isolation and deterministic latency are mandatory.
FAQ
What is the maximum operating frequency supported by IDT7282L12PAG8?
IDT7282L12PAG8 supports a maximum shift frequency of 50 MHz under commercial conditions (0°C to +70°C) and 40 MHz under industrial conditions (–40°C to +85°C), as specified in AC Electrical Characteristics. This corresponds to a minimum read/write cycle time of 20 ns (commercial) or 25 ns (industrial), consistent with its 12 ns access time rating.
Does IDT7282L12PAG8 support 3.3 V operation?
No, IDT7282L12PAG8 is a 5 V-only device with recommended DC operating conditions specifying VCC = 4.5 V to 5.5 V. It is not 3.3 V tolerant-applying 3.3 V to VCC will result in non-functional behavior or potential damage. For 3.3 V dual FIFO solutions, alternative families such as IDT72V2110 must be evaluated.
Can IDT7282L12PAG8 be used in depth expansion mode with other IDT728x devices?
Yes, IDT7282L12PAG8 supports depth expansion with any member of the IDT7280–IDT7285 family-including same- or different-depth variants-via XI/XO daisy-chaining. However, all devices in the chain must share identical speed grade (e.g., all L12) and temperature range to ensure timing compatibility across the expanded array.
Is the retransmit (RT) function available in width expansion mode?
Yes, the retransmit (RT) function remains fully operational in width expansion mode because this configuration grounds XI on all devices, preserving single-device behavior per channel. RT pulses reset only the read pointer of the associated FIFO (A or B), enabling repeat transmission of buffered data without disturbing write operations or other channels.
What is the purpose of the 9-bit data width in IDT7282L12PAG8?
The 9-bit data width in IDT7282L12PAG8 accommodates an extra bit beyond standard 8-bit bytes-typically used for parity (odd/even) or protocol control bits in serial communications. This allows error detection during transmission/reception without requiring external parity generators, simplifying system-level data integrity handling in applications like modems or industrial fieldbus nodes.
7282L12PAG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 7200
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Size:
- 18K (1K x 9 x 2)
- Function:
- Asynchronous
- Data Rate:
- 50MHz
- Access Time:
- 12ns
- Voltage - Supply:
- 4.5 V ~ 5.5 V
- Current - Supply (Max):
- 125mA
- Bus Directional:
- Uni-Directional
- Expansion Type:
- Depth, Width
- Programmable Flags Support:
- No
- Retransmit Capability:
- Yes
- FWFT Support:
- No
- Operating Temperature:
- 0°C ~ 70°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
7282L12PAG8 FAQ
1.How can I place an order for 7282L12PAG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7282L12PAG8 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 7282L12PAG8 reliable?
The price and inventory of 7282L12PAG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7282L12PAG8 is usually 5 days.
3.What payment methods are accepted for 7282L12PAG8?
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4.How is shipping managed for 7282L12PAG8?
7282L12PAG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7282L12PAG8 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 7282L12PAG8?
For technical support, including 7282L12PAG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7282L12PAG8 requirements.
6.How does Aetrix verify that 7282L12PAG8 is sourced from the original manufacturer or authorized distributors?
All 7282L12PAG8 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 7282L12PAG8 meets industry standards.
7.What is the process for return or replacement of 7282L12PAG8?
All 7282L12PAG8 units undergo pre-shipment inspection (PSI). If there is an issue with 7282L12PAG8, 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 7282L12PAG8 part is unused and in its original packaging.
Return procedure for 7282L12PAG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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