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Renesas 7202LA12TPG
- Part No.:
- 7202LA12TPG
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 28-DIP (0.300", 7.62mm)
- Datasheet:
-
7202LA12TPG.pdf
- Description:
- IC FIFO ASYNC 1KX9 12NS 28DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,427
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Product details
Overview
7202LA12TPG from Renesas Electronics (formerly IDT) is a 1,024 × 9-bit CMOS asynchronous FIFO memory IC used for rate buffering and data synchronization between mismatched clock domains or bus protocols. It features 12 ns access time, ultra-high-speed operation, dual-port asynchronous read/write capability, and status flags (Empty, Full, Half-Full). It is deployed in legacy telecom line cards, industrial PLC backplanes, and military avionics data interfaces requiring deterministic latency and overflow/underflow protection.
For engineers reviewing the 7202LA12TPG datasheet, 7202LA12TPG pinout, 7202LA12TPG application, or 7202LA12TPG equivalent, key selection considerations include its 12 ns tA, 5 V single-supply operation, TSSOP-28 package, retransmit (RT) functionality, and compatibility with depth/width expansion architectures for scalable buffer design.
Technical Context
The 7202LA12TPG implements a ring-pointer-based FIFO architecture with no external address bus-data flows strictly on first-in/first-out basis via W (write) and R (read) control edges. Its 9-bit data width supports parity or control bits, enabling error-checked serial communications links.
It operates in three primary modes: Single Device (XI grounded), Depth Expansion (XO→XI daisy chain), and Width Expansion (parallel devices). Retransmit (RT) resets the read pointer without affecting write pointer, while FL/RT and XO/HF pins serve dual roles depending on mode-enabling flexible system-level integration without additional logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1,024 × 9-bit (9,216 bits total); supports parity/control bit insertion in data path |
| Access Time (tA) | 12 ns max - enables ≤83.3 MHz effective throughput in flow-through mode |
| Supply Voltage | 4.5 V to 5.5 V - compatible with legacy 5 V TTL/CMOS systems; no level-shifting required |
| Operating Temperature | –40°C to +85°C (Industrial grade) - validated for extended thermal cycling in embedded control environments |
| Power Consumption | Active: 440 mW max (80 mA @ 5 V); Power-down: 28 mW max - reduces thermal load in dense PCB layouts |
| Status Flags | EF (Empty), FF (Full), XO/HF (Half-Full or Expansion Out) - real-time buffer occupancy monitoring without polling |
| Retransmit Function | RT input pulses LOW to reset read pointer to start address - enables repeat transmission of buffered command sequences |
Pinout & Package
7202LA12TPG is housed in a 28-pin Thin Plastic DIP (TP) package per ordering code "TP", measuring 0.300″ wide with 0.100″ lead pitch. Pinout conforms to standard IDT720xLA family layout and supports drop-in replacement within same speed/package variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| W | Write Enable Input | Falling-edge-triggered write strobe; initiates storage of D0–D8 into next FIFO location if FF = HIGH |
| R | Read Enable Input | Falling-edge-triggered read strobe; outputs Q0–Q8 from current FIFO location if EF = HIGH |
| D0–D8 | Data Inputs | 9-bit parallel input bus; accepts TTL/CMOS-compatible logic levels; supports parity bit assignment |
| Q0–Q8 | Data Outputs | 3-state outputs enabled only during active read cycle (R = LOW); high-impedance otherwise |
| EF | Empty Flag Output | Open-drain output goes LOW when read pointer = write pointer - prevents underflow reads |
| FF | Full Flag Output | Open-drain output goes LOW when write pointer = (read pointer – 1) mod 1024 - prevents overflow writes |
| XO/HF | Dual-mode Output | In Single Mode: HF = LOW when ≥512 locations filled; in Depth Expansion: pulse signals next device's XI |
| FL/RT | Dual-mode Input | In Depth Expansion: FL = LOW marks first device; in Single Mode: RT = LOW triggers read pointer reset |
| RS | Reset Input | Asynchronous active-LOW reset - sets both read/write pointers to location zero; required at power-up |
| XI | Expansion In Input | Grounded in Single Mode; tied to prior device's XO in Depth Expansion - configures operational topology |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous dual-port operation | Independent W and R clocks allow seamless bridging between unrelated timing domains (e.g., UART ↔ microcontroller) |
| Auto-retransmit capability | RT pulse resets read pointer without disturbing write pointer - essential for retry-based protocol stacks (e.g., HDLC) |
| Expandable architecture | Depth expansion (XO→XI chaining) and width expansion (parallel devices) support custom buffer sizes up to 64k×9 with external flag logic |
| Half-Full Flag (HF) | Enables early warning interrupt generation at 50% fill level - allows preemptive DMA or CPU intervention before full/empty conditions |
| MIL-STD-883 Class B compliance | Qualified for military temperature range (–55°C to +125°C) and shock/vibration per standard - suitable for aerospace and defense platforms |
Applications
| Telecom Line Interface | Industrial PLC Backplane |
|---|---|
|
Use Scenario: Buffering asynchronous serial data between T1/E1 framer and DSP subsystem in legacy telecom shelf. IC Role / Device Role / Timing Role: Asynchronous rate-matching FIFO isolating 1.544 MHz T1 framing clock from variable-latency DSP processing clock. Use Value: Prevents bit errors caused by clock domain mismatch; 12 ns tA ensures sub-microsecond jitter contribution to frame alignment. |
Use Scenario: Interfacing multiple I/O modules to central controller over shared parallel backplane bus with varying arbitration delays. IC Role / Device Role / Timing Role: Decoupling write bursts from sensor modules and read scheduling from controller - eliminating bus contention stalls. Use Value: 1,024-word depth absorbs worst-case burst (e.g., 16-channel ADC snapshot), while EF/FF flags enable lock-free software handshaking. |
| Military Avionics Data Link | Legacy Test Equipment Interface |
|
Use Scenario: Real-time buffering of MIL-STD-1553B message payloads between bus controller and payload processor with deterministic latency. IC Role / Device Role / Timing Role: Synchronizing 1553B BC-initiated transfers with internal processor DMA cycles using RT-triggered retransmission of command queues. Use Value: MIL-STD-883 qualification ensures operation across flight envelope; HF flag enables predictive buffer management during high-G maneuvers. |
Use Scenario: Adapting vintage GPIB-controlled instruments to modern USB/Ethernet host controllers via FPGA bridge with limited on-chip RAM. IC Role / Device Role / Timing Role: Offloading bursty instrument response data (e.g., spectrum analyzer trace dumps) into external FIFO before host transfer. Use Value: 9-bit width accommodates GPIB's 8-bit data + handshake bit; TSSOP-28 footprint fits space-constrained adapter PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FIFO memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 7202LA15TPG | Slower 15 ns access time; identical pinout, package, and feature set | Suitable where system timing margin allows relaxed tA; lower power draw in active state | Select when 12 ns timing is unnecessary and cost optimization is prioritized over peak throughput |
| 7202LA20TPG | 20 ns access time; same industrial temp range, TSSOP-28 package, and functional compatibility | Used in thermally constrained designs where reduced switching activity lowers junction temperature | Prefer for long-life deployments in sealed enclosures where thermal derating justifies timing trade-off |
Compared with 7202LA15TPG and 7202LA20TPG, the 7202LA12TPG delivers the highest throughput in the IDT7202LA family while maintaining identical footprint and interface behavior-making it optimal for latency-critical upgrades without PCB revision.
Availability
7202LA12TPG is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and defense electronics requiring stable component supply amid end-of-life transitions.
Supply support for 7202LA12TPG 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 Corporation is a global semiconductor leader formed through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and legacy interface solutions.
The IDT7202LA series was originally developed by Integrated Device Technology (acquired by Renesas in 2019) to address high-reliability, asynchronous data buffering needs in mission-critical communications and control systems.
FAQ
What is the memory depth and width of the 7202LA12TPG?
The 7202LA12TPG provides a fixed 1,024 × 9-bit memory organization - meaning it stores up to 1,024 words, each 9 bits wide. This 9-bit width explicitly supports an 8-bit data byte plus one parity or control bit, making it ideal for error-checked serial protocols. The depth is not programmable and cannot be altered via configuration pins or registers.
Does the 7202LA12TPG support simultaneous read and write operations?
Yes, the 7202LA12TPG supports fully asynchronous and simultaneous read and write operations - a core feature of its FIFO architecture. The internal ring pointers operate independently, allowing data to be written on the W edge while being read on the R edge, provided EF and FF flags permit the respective actions. No arbitration logic is required.
What does the "TPG" suffix indicate in 7202LA12TPG?
The "TPG" suffix in 7202LA12TPG decodes as: T = Thin Plastic DIP package, P = Plastic DIP body, G = Green (lead-free) finish. This confirms the device uses SnAgCu (SAC) solder finish and complies with RoHS Directive 2011/65/EU - distinct from legacy SnPb versions discontinued in 2018.
Can the 7202LA12TPG be used in depth-expanded configurations?
Yes, the 7202LA12TPG supports depth expansion via its XI (Expansion In) and XO/HF (Expansion Out) pins. When chained in daisy configuration (XO of Device N → XI of Device N+1), multiple units create a deeper FIFO - e.g., three devices yield 3,072 × 9-bit capacity. Note: RT and HF functions are disabled in this mode, and composite EF/FF logic must be added externally.
Is the 7202LA12TPG still in production or subject to obsolescence?
The 7202LA12TPG is marked End-of-Life (EOL) per Renesas PDN# SP-17-02, with last-time-buy expiring June 15, 2018. Aetrix Electronics maintains legacy inventory and offers controlled-lifecycle supply support - including date-code transparency, traceable sourcing, and BOM continuity planning - for ongoing maintenance and repair of installed systems.
7202LA12TPG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 7200
- Package/Case:
- 28-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Size:
- 9K (1K x 9)
- Function:
- Asynchronous
- Data Rate:
- 50MHz
- Access Time:
- 12ns
- Voltage - Supply:
- 4.5 V ~ 5.5 V
- Current - Supply (Max):
- 80mA
- 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:
- Through Hole
- Supplier Device Package:
- 28-PDIP
7202LA12TPG FAQ
1.How can I place an order for 7202LA12TPG through Aetrix?
Please submit a Request for Quotation (RFQ) for 7202LA12TPG 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 7202LA12TPG reliable?
The price and inventory of 7202LA12TPG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7202LA12TPG is usually 5 days.
3.What payment methods are accepted for 7202LA12TPG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7202LA12TPG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7202LA12TPG?
7202LA12TPG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7202LA12TPG 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 7202LA12TPG?
For technical support, including 7202LA12TPG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7202LA12TPG requirements.
6.How does Aetrix verify that 7202LA12TPG is sourced from the original manufacturer or authorized distributors?
All 7202LA12TPG 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 7202LA12TPG meets industry standards.
7.What is the process for return or replacement of 7202LA12TPG?
All 7202LA12TPG units undergo pre-shipment inspection (PSI). If there is an issue with 7202LA12TPG, 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 7202LA12TPG part is unused and in its original packaging.
Return procedure for 7202LA12TPG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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