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Renesas 7202LA15TPGI
- Part No.:
- 7202LA15TPGI
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 28-DIP (0.300", 7.62mm)
- Datasheet:
-
7202LA15TPGI.pdf
- Description:
- IC FIFO ASYNC 1KX9 15NS 28DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,230
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Product details
Overview
IDT7202LA15TPGI 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 15 ns access time, ultra-low active power (440 mW max), auto-retransmit capability, and status flags (Empty, Full, Half-Full). It is deployed in industrial communications interfaces requiring deterministic latency and overflow/underflow protection.
For engineers reviewing the IDT7202LA15TPGI datasheet, IDT7202LA15TPGI pinout, IDT7202LA15TPGI application, or IDT7202LA15TPGI equivalent, key selection criteria include its 1,024-word depth, 9-bit data width with parity support, TSSOP-28 package, industrial temperature range (–40°C to +85°C), and compatibility with depth/width expansion architectures.
Technical Context
The IDT7202LA15TPGI implements a dual-port ring-buffer architecture with independent read/write pointers, eliminating address management overhead. Its asynchronous operation allows fully independent W/R clocks, enabling seamless bridging between systems with different timing domains - e.g., UART-to-processor or DSP-to-FPGA data paths.
It supports three operating modes: Single Device (XI grounded), Depth Expansion (daisy-chained via XI/XO), and Width Expansion (parallel devices). The FL/RT pin serves dual roles - First Load in expansion mode and Retransmit trigger in single-device mode - with retransmit resetting only the read pointer while preserving write state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1,024 × 9-bit FIFO - provides 1,024 words of first-in/first-out buffering with 9-bit width supporting 8 data + 1 parity bit. |
| Access Time (tA) | 15 ns max - guarantees deterministic read latency critical for real-time rate-matching applications. |
| 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: ≤440 mW; Power-down: ≤28 mW - enables low-heat design in dense PCB layouts without forced cooling. |
| Status Flags | EF (Empty), FF (Full), XO/HF (Half-Full) - provide hardware-level flow control without software polling or CPU intervention. |
| Retransmit Function | RT pulse resets read pointer to start - enables repeat transmission of buffered data (e.g., protocol retransmission on ACK timeout). |
Pinout & Package
Package: 28-pin Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153 compliant, 4.4 mm width, lead-free (Pb-free) finish per RoHS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| W | Write Enable Input | Falling-edge-triggered write strobe; initiates storage of D0–D8 into FIFO when FF = HIGH. |
| R | Read Enable Input | Falling-edge-triggered read strobe; outputs Q0–Q8 from FIFO when EF = HIGH. |
| D0–D8 | Data Inputs | 9-bit parallel input bus; supports parity bit assignment for error detection in serial communication links. |
| Q0–Q8 | Data Outputs | Three-state outputs enabled only during valid read cycles; high-impedance otherwise to prevent bus contention. |
| EF, FF, XO/HF | Status Flag Outputs | Open-drain compatible; EF LOW = empty, FF LOW = full, XO/HF LOW = half-full (in single-device mode). |
| RS | Reset Input | Active-Low synchronous reset - clears both read/write pointers to location zero after power-up initialization. |
| FL/RT | First Load / Retransmit Input | In single-device mode: RT pulse resets read pointer; in depth expansion: FL = LOW selects first device in chain. |
| XI | Expansion In Input | Grounded for single-device operation; connected to XO of prior device in daisy-chain depth expansion. |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Read/Write | Independent W and R clocks eliminate synchronization logic and enable true multi-clock domain bridging. |
| Expandable Architecture | Supports unlimited depth (via XI/XO daisy chain) and width (parallel devices) - scalable from 1K×9 to >1M×9 without redesign. |
| Hardware Flow Control | EF/FF flags drive external logic directly - removes need for software polling or interrupt-driven buffer management. |
| Auto-Retransmit Capability | RT input resets read pointer without affecting write pointer - enables protocol-level retransmission without data loss or host CPU involvement. |
| 9-Bit Data Width with Parity Option | D0–D8 allows dedicated parity bit placement - simplifies implementation of error-checked UART, HDLC, or custom serial protocols. |
Applications
| Industrial Serial Bridge | Motor Control Data Buffer |
|---|---|
|
Use Scenario: Bridging a 115.2 kbps RS-485 fieldbus to a 25 MHz microcontroller bus with bursty traffic patterns. IC Role / Device Role / Timing Role: Asynchronous FIFO decouples UART TX/RX timing from MCU execution, absorbing jitter and preventing overrun/underrun. Use Value: Eliminates UART FIFO overruns during MCU interrupt latency spikes; ensures deterministic 15 ns read response for real-time command sequencing. |
Use Scenario: Storing position feedback samples from an encoder before batch transfer to a motion controller over SPI. IC Role / Device Role / Timing Role: Rate buffer between high-speed quadrature encoder (1 MHz update) and slower SPI master (10 MHz SCLK, 16-bit words). Use Value: Prevents sample loss during SPI transaction gaps; HF flag triggers DMA fetch at 512-sample threshold, optimizing bandwidth utilization. |
| Legacy System Protocol Adapter | Test Equipment Data Capture |
|
Use Scenario: Converting parallel 8-bit ISA bus writes into serial packetized output for a legacy diagnostic tool. IC Role / Device Role / Timing Role: First-in/first-out staging buffer with parity generation and retransmit on NAK response. Use Value: RT pin enables automatic retransmission of unacknowledged packets without host firmware intervention - reducing protocol stack complexity. |
Use Scenario: Capturing transient analog-to-digital samples at 1 MSPS and streaming to a PC via USB, where host read latency varies. IC Role / Device Role / Timing Role: Decoupling ADC sampling clock (fixed) from variable USB bulk transfer intervals using full/empty handshaking. Use Value: FF/EF flags directly control ADC EN and USB IN token timing - eliminates dropped samples even under OS scheduling jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FIFO memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74V293-15PGG4 | 1,024 × 18-bit, 15 ns, 3.3 V supply - wider data path, lower voltage, no RT or HF flag. | Requires level-shifting for 5 V systems; lacks retransmit function - unsuitable for parity-based retry protocols. | Choose when 18-bit width and 3.3 V operation are required; verify external logic handles missing HF/RT functions. |
| ICS650MI-15LF | 1,024 × 9-bit, 15 ns, 5 V, but only commercial temp range (0°C to +70°C) and no military-grade qualification. | Not rated for industrial ambient extremes; lacks MIL-STD-883 compliance - invalid for harsh-environment deployments. | Acceptable for lab or office equipment; reject for factory-floor or outdoor-rated systems requiring –40°C startup. |
Compared with SN74V293-15PGG4 and ICS650MI-15LF, the IDT7202LA15TPGI uniquely combines industrial temperature rating, hardware retransmit, half-full flag, and 5 V compatibility - making it the sole option for ruggedized, parity-aware, deterministic FIFO applications.
Availability
IDT7202LA15TPGI is available at Aetrix Electronics and suitable for industrial serial bridges, motor control data buffers, legacy system protocol adapters, and test equipment data capture requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for IDT7202LA15TPGI 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 delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, infrastructure, and IoT applications.
IDT7202LA15TPGI belongs to the legacy IDT7200L family of high-speed asynchronous FIFOs, designed specifically for deterministic data buffering in industrial communications, motor control, and instrumentation systems where clock domain isolation and hardware flow control are essential.
FAQ
What is the maximum operating frequency supported by the IDT7202LA15TPGI?
The IDT7202LA15TPGI does not operate on a fixed clock but supports asynchronous read/write cycles. Its 15 ns access time enables reliable operation up to 40 MHz shift frequency (tS = 25 ns min), verified under industrial conditions (–40°C to +85°C) with 5 V ±10% supply. Timing margins must be validated per AC Electrical Characteristics Table in the datasheet for specific layout and load conditions.
Does the IDT7202LA15TPGI support 3.3 V logic interfaces?
No - the IDT7202LA15TPGI is a 5 V-only device. Its DC operating conditions specify VCC = 4.5 V to 5.5 V, and input thresholds (VIH = 2.0 V min for commercial/industrial) are defined relative to 5 V. Direct connection to 3.3 V logic requires level-shifting circuitry to avoid undefined states or excessive current draw on inputs.
How does the retransmit (RT) function behave during depth expansion mode?
In depth expansion mode, the RT function is disabled and not available. The IDT7202LA15TPGI datasheet explicitly states that "the Retransmit (RT) function and Half-Full Flag (HF) are not available in the Depth Expansion Mode." When cascading multiple IDT7202LA15TPGI devices, RT must be left unconnected or held inactive (VIH) to prevent unintended behavior.
Can the IDT7202LA15TPGI be used in a bidirectional data path between two processors?
Yes - the IDT7202LA15TPGI supports bidirectional operation when paired with a second unit. Figure 16 in the datasheet shows two IDT7202LA15TPGI devices configured back-to-back: one handles processor A → B writes/reads, the other handles B → A traffic. This avoids bus contention and enables full-duplex buffering without arbitration logic.
Is the IDT7202LA15TPGI still in active production?
The IDT7202LA15TPGI is obsolete per Renesas' Product Discontinuation Notice PDN# SP-17-02: leaded (SnPb) versions entered EOL in 2017, and last-time-buy expired June 15, 2018. However, Aetrix Electronics maintains legacy inventory with full traceability and offers lifecycle support including obsolescence forecasting and cross-reference assistance for migration paths.
7202LA15TPGI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 7200
- Package/Case:
- 28-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Size:
- 9K (1K x 9)
- Function:
- Asynchronous
- Data Rate:
- 40MHz
- Access Time:
- 15ns
- 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:
- -40°C ~ 85°C
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 28-PDIP
7202LA15TPGI FAQ
1.How can I place an order for 7202LA15TPGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7202LA15TPGI 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 7202LA15TPGI reliable?
The price and inventory of 7202LA15TPGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7202LA15TPGI is usually 5 days.
3.What payment methods are accepted for 7202LA15TPGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7202LA15TPGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7202LA15TPGI?
7202LA15TPGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7202LA15TPGI 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 7202LA15TPGI?
For technical support, including 7202LA15TPGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7202LA15TPGI requirements.
6.How does Aetrix verify that 7202LA15TPGI is sourced from the original manufacturer or authorized distributors?
All 7202LA15TPGI 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 7202LA15TPGI meets industry standards.
7.What is the process for return or replacement of 7202LA15TPGI?
All 7202LA15TPGI units undergo pre-shipment inspection (PSI). If there is an issue with 7202LA15TPGI, 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 7202LA15TPGI part is unused and in its original packaging.
Return procedure for 7202LA15TPGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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