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Renesas 7130LA20TF8
- Part No.:
- 7130LA20TF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7130LA20TF8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,291
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Product details
Overview
7130LA20TF8 from IDT (Integrated Device Technology) is a high-speed 1K × 8 dual-port static RAM with master arbitration logic, 20 ns max access time, TTL-compatible 5V ±10% supply, and battery-backed data retention down to 2V. It supports fully asynchronous left/right port operation and is used in real-time interprocessor communication systems requiring concurrent read/write access without external logic.
For engineers reviewing the 7130LA20TF8 datasheet, 7130LA20TF8 pinout, 7130LA20TF8 application, or 7130LA20TF8 equivalent, key selection criteria include its 20 ns read cycle time, 1 mW standby power, on-chip BUSY/INT arbitration, dual 10-bit address buses (A0L–A9L / A0R–A9R), and TQFP-64 package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The 7130LA20TF8 implements independent left and right ports with separate CE/OE/R/W controls, enabling true simultaneous access. Its on-chip arbitration logic resolves contention via open-drain BUSYL/BUSYR outputs (requiring external pull-ups) and supports priority-based write inhibition when address matches occur across ports.
It features automatic power-down control per port via CE assertion, CMOS-level full-standby mode (ISB3 ≤ 0.2 mA), and battery-retention capability (VDR = 2.0 V) - a defining characteristic of the LA variant absent in SA versions. All timing parameters (tRC, tAA, tACE, tAOE) are specified at 20 ns maximum for commercial-grade operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit data bus per port) |
| Access Time (max) | 20 ns - guarantees worst-case read latency under commercial conditions (0°C to +70°C) |
| Supply Voltage | 5.0 V ±10% - single TTL-compatible rail; no dual-supply or level-shifting required |
| Standby Current | 1 mA (typ.) - enables ultra-low-power hold mode during system sleep or battery backup |
| Data Retention | 2.0 V minimum - sustains memory contents during main power loss using auxiliary 2V source |
| Operating Temp | –40°C to +85°C - qualified for industrial environments without derating |
| Package | 64-pin TQFP (PNG64) - 14 mm × 14 mm body, surface-mount, RoHS-compliant |
Pinout & Package
7130LA20TF8 is housed in a 64-pin Thin Quad Flat Package (TQFP), designated PNG64, with 0.5 mm pitch and exposed thermal pad. Pin assignments follow standard dual-port SRAM layout: dual 10-bit address buses (A0L–A9L / A0R–A9R), dual 8-bit I/Os (I/O0L–I/O7L / I/O0R–I/O7R), independent control signals per port (CEL/OEL/R/WL and CER/OER/R/WR), plus shared interrupt (INTL/INTR) and arbitration (BUSYL/BUSYR) pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL, CER | Chip Enable (Left/Right) | Active-low enable for respective port; controls power-down entry/exit and memory access gating |
| OEL, OER | Output Enable (Left/Right) | Active-low tri-state control for I/O drivers; allows bus sharing without external transceivers |
| R/WL, R/WR | Read/Write Control (Left/Right) | Direction control: HIGH = read, LOW = write; determines I/O driver state and internal path selection |
| BUSYL, BUSYR | Arbitration Flag (Open Drain) | Indicates port contention; requires external pull-up; asserts LOW to block writes during address collision |
| INTL, INTR | Interrupt Flag (Open Drain) | Signals inter-port event completion (e.g., flag set/clear); enables hardware-triggered synchronization |
| A0L–A9L, A0R–A9R | Address Inputs (Left/Right) | 10-bit address buses selecting one of 1024 locations independently per port |
| I/O0L–I/O7L, I/O0R–I/O7R | Data I/O (Left/Right) | Bidirectional 8-bit data paths; electrically isolated between ports; no internal bus contention |
| VCC, GND | Power Supply | Multiple VCC/GND pins distributed for low-noise operation and reduced ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Eliminates need for external priority encoders or glue logic in MASTER/SLAVE configurations |
| Open-drain BUSY/INT outputs | Enables wired-OR interrupt aggregation and flexible voltage-level interfacing via external pull-ups |
| 2V data retention | Preserves memory state during main power interruption using low-current backup source (≤100 µA) |
| Independent port power control | Per-port CE allows selective shutdown - e.g., keep right port active while left port sleeps |
| Full asynchronous operation | No clock required; timing governed solely by setup/hold and access specifications (tAS, tDH, tRC) |
Applications
| Real-Time Interprocessor Communication | Digital Signal Processing Buffering |
|---|---|
Use Scenario: Two microcontrollers exchange sensor data and control commands via shared memory without polling or software handshaking. IC Role / Device Role / Timing Role: 7130LA20TF8 acts as a non-blocking, hardware-arbitrated mailbox with BUSY/INT signaling for deterministic synchronization. Use Value: Enables sub-20 ns inter-core data transfer with zero CPU overhead and guaranteed atomicity during address collisions. | Use Scenario: A DSP core writes processed audio samples into memory while a host processor reads them for streaming or storage. IC Role / Device Role / Timing Role: 7130LA20TF8 serves as a ping-pong buffer with independent read/write ports, eliminating FIFO management firmware. Use Value: Sustains continuous 50 MB/s throughput (at 20 ns cycle) with no wait states or bus turnaround delays. |
| Industrial PLC Data Exchange | Battery-Backed Configuration Storage |
Use Scenario: Programmable logic controller modules share I/O status and ladder logic variables across redundant CPUs. IC Role / Device Role / Timing Role: 7130LA20TF8 functions as a fault-tolerant shared register bank with hardware-enforced write protection during contention. Use Value: Prevents data corruption during hot-swapping or failover by asserting BUSY before conflicting writes commit. | Use Scenario: Embedded system stores calibration coefficients and operational settings that must survive AC power loss. IC Role / Device Role / Timing Role: 7130LA20TF8 operates in data retention mode powered by coin-cell battery (2V), preserving critical parameters indefinitely. Use Value: Eliminates supercapacitor or EEPROM wear-out concerns; retains data at <100 µA quiescent current. |
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 | 5V, 1K × 16, 20 ns, QCC68 package; no built-in arbitration; requires external logic for BUSY/INT | Supports wider data bus but lacks native port-to-port signaling; higher pin count and board area | Select when 16-bit word width is mandatory and arbitration can be implemented externally |
| IS61LV25616AL-10TLI | 3.3V, 256K × 16, 10 ns, TSOP-54; single-port only; no dual-access or arbitration logic | Higher density and speed but no concurrent access; requires two chips + external arbitration for dual-port function | Select for cost-sensitive, non-real-time buffering where latency is more critical than concurrency |
Compared with CY7C024AV-20AXC and IS61LV25616AL-10TLI, the 7130LA20TF8 uniquely integrates arbitration, interrupt, and battery retention in a compact 64-pin TQFP - delivering deterministic dual-port operation without design compromises in space-constrained industrial controllers.
Availability
7130LA20TF8 is available at Aetrix Electronics and suitable for real-time interprocessor communication, digital signal processing buffering, and industrial PLC data exchange requiring stable component supply across extended product lifecycles.
Supply support for 7130LA20TF8 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) is a fabless semiconductor company specializing in high-performance memory, timing, interface, and RF solutions, now part of Renesas Electronics.
The 7130LA20TF8 belongs to IDT's legacy dual-port SRAM product line, engineered specifically for deterministic, low-latency interprocessor communication in military, industrial, and telecom infrastructure equipment.
FAQ
What is the maximum operating temperature range for the 7130LA20TF8?
The 7130LA20TF8 is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the "Recommended Operating Temperature and Supply Voltage" table (2689 tbl 03), where the LA variant is explicitly qualified for industrial grade. It does not meet military-grade (–55°C to +125°C) or extended commercial (0°C to +70°C only) ranges.
Does the 7130LA20TF8 support true simultaneous read/write operations on both ports?
Yes, the 7130LA20TF8 supports fully asynchronous, independent read and write operations on left and right ports. The functional block diagram and "Fully asynchronous operation from either port" feature confirm this. However, simultaneous writes to the same memory location trigger BUSY arbitration to prevent corruption - the winning port completes its write, and the losing port's write is inhibited.
How is battery backup implemented on the 7130LA20TF8?
Battery backup on the 7130LA20TF8 is implemented via the VDR = 2.0 V data retention threshold (2689 tbl 07). When main VCC drops below 2.0 V, the device enters retention mode drawing ≤100 µA (typical), preserving stored data as long as the backup source remains ≥2.0 V. No external circuitry beyond the 2V source and decoupling is required.
Are BUSYL and BUSYR pins push-pull or open-drain on the 7130LA20TF8?
BUSYL and BUSYR are open-drain outputs on the 7130LA20TF8, as stated in Note 1 of the Functional Block Diagram ("IDT7130: BUSY is open drain output and requires pullup resistor") and Truth Table I footnote. They must be externally pulled up to VCC (or another logic-high rail) to generate valid HIGH signals; floating operation is undefined.
Can the 7130LA20TF8 be used as a SLAVE device in a MASTER/SLAVE configuration?
No, the 7130LA20TF8 is exclusively a MASTER device. Per the datasheet description, "IDT7130 is designed to be used as a stand-alone 8-bit Dual-Port RAM or as a 'MASTER' Dual-Port RAM together with the IDT7140 'SLAVE'". The 7130LA20TF8 contains on-chip arbitration logic and BUSY outputs - features absent in SLAVE-only 7140 variants. Using it as a SLAVE would violate functional intent and timing assumptions.
7130LA20TF8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 8Kbit
- Memory Organization:
- 1K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 20ns
- Access Time:
- 20 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (10x10)
7130LA20TF8 FAQ
1.How can I place an order for 7130LA20TF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA20TF8 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 7130LA20TF8 reliable?
The price and inventory of 7130LA20TF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA20TF8 is usually 5 days.
3.What payment methods are accepted for 7130LA20TF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA20TF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA20TF8?
7130LA20TF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA20TF8 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 7130LA20TF8?
For technical support, including 7130LA20TF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA20TF8 requirements.
6.How does Aetrix verify that 7130LA20TF8 is sourced from the original manufacturer or authorized distributors?
All 7130LA20TF8 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 7130LA20TF8 meets industry standards.
7.What is the process for return or replacement of 7130LA20TF8?
All 7130LA20TF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA20TF8, 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 7130LA20TF8 part is unused and in its original packaging.
Return procedure for 7130LA20TF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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