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Renesas 7130SA55TFI8
- Part No.:
- 7130SA55TFI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7130SA55TFI8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,284
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Product details
Overview
7130SA55TFI8 from IDT is a high-speed 1K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 55 ns maximum read/write cycle time, TTL-compatible 5V ±10% supply, and industrial temperature range (–40°C to +85°C). It enables full-speed 16-bit-or-wider memory expansion when paired with IDT7140 SLAVE devices in real-time embedded control systems.
For engineers reviewing the 7130SA55TFI8 datasheet, 7130SA55TFI8 pinout, 7130SA55TFI8 application, or 7130SA55TFI8 equivalent, key selection criteria include BUSY flag timing (tBDD ≤ 55 ns), dual-port asynchronous access capability, master arbitration support, and compatibility with 48-pin TQFP packaging for space-constrained industrial PCB layouts.
Technical Context
The 7130SA55TFI8 implements fully independent left/right ports with separate address (A0L–A9L, A0R–A9R), data (I/O0L–I/O7L, I/O0R–I/O7R), and control lines (CEL/OEL/R/WL, CER/OER/R/WR), enabling concurrent read/write operations without external logic. Its on-chip arbitration logic resolves port contention via BUSYL/BUSYR open-drain outputs requiring pull-up resistors.
It supports port-to-port interrupt signaling via INTL/INTR pins and includes automatic power-down modes triggered by CE assertion, delivering 20 mA typical standby current (ISB1) at 55 ns speed grade under industrial conditions. Battery backup data retention is not supported - only LA variants provide 2V data retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide), sufficient for small real-time buffers or register file storage in dual-CPU systems. |
| Access Time | 55 ns max (tAA, tACE, tAOE), enabling interface with 12–18 MHz microcontrollers without wait states. |
| Supply Voltage | 4.5 V to 5.5 V DC - compatible with standard TTL/CMOS 5V logic families and legacy industrial power rails. |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade operation in motor drives, PLCs, and telecom line cards. |
| Standby Current | 20 mA typical (ISB1, both ports disabled), critical for low-power sleep modes in always-on embedded controllers. |
| Package | 48-pin TQFP (PPG64/PNG64 footprint), surface-mount compatible with automated assembly and thermal performance suitable for convection-cooled enclosures. |
| BUSY Timing | tBDD ≤ 55 ns - defines minimum delay between BUSY deassertion and valid read data, essential for deterministic inter-processor synchronization. |
Pinout & Package
7130SA55TFI8 is supplied in a 48-pin Thin Quad Flat Package (TQFP) with 0.5 mm pitch, body size approximately 10 mm × 10 mm × 1.4 mm (PPG64) or 14 mm × 14 mm × 1.4 mm (PNG64), RoHS-compliant and green-part qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | Four dedicated ground pins minimize ground bounce during simultaneous dual-port transitions; must be connected to low-impedance system ground plane. |
| VCC (Pins 23, 26) | Power supply | Dual VCC pins reduce IR drop and improve noise immunity; require local 0.1 µF ceramic decoupling per pin. |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables respective port; controls dynamic current (ICC) and entry into ISB1/ISB2 standby modes. |
| OEL / OER | Output Enable (Left/Right) | Active-low enables I/O drivers; when high, places I/O pins in high-impedance state to prevent bus contention. |
| R/WL / R/WR | Read/Write Control (Left/Right) | High = read, low = write; determines direction of data flow on associated I/O bus during active CE cycle. |
| BUSYL / BUSYR | Arbitration Flag Output (Left/Right) | Open-drain outputs requiring external pull-up; assert low to block writes on opposite port during address contention. |
| INTL / INTR | Interrupt Flag (Left/Right) | Open-drain status flags indicating inter-port communication events; used to signal completion or request service from peer processor. |
| A0L–A9L / A0R–A9R | Address Inputs (Left/Right) | 10-bit address buses select one of 1024 memory locations independently per port; no internal latching. |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (Left/Right) | Bidirectional 8-bit data paths; driven only when OE and CE are active low and R/W configures direction. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Eliminates need for external priority encoder or glue logic in dual-processor memory sharing, reducing BOM count and layout complexity. |
| Asynchronous dual-port operation | Enables independent, unsynchronized access from two CPUs or DMA engines - no clock domain crossing required. |
| Open-drain BUSY/INT outputs | Support wired-OR interrupt and arbitration busing across multiple dual-port SRAMs or processors without level-shifting. |
| Master-only BUSY generation | 7130SA55TFI8 asserts BUSY on conflict; 7140 SLAVE uses BUSY as input - ensures deterministic resolution in MASTER/SLAVE topology. |
| TTL-compatible interface | Direct connection to legacy 5V microcontrollers (e.g., 80C51, 68HC11) without level translators or bus buffers. |
Applications
| Industrial PLC Memory Buffer | Dual-Core DSP Data Exchange |
|---|---|
Use Scenario: Real-time I/O scanning and ladder logic execution in programmable logic controllers where deterministic memory access is required between CPU and I/O coprocessor. IC Role / Device Role / Timing Role: MASTER dual-port SRAM acts as shared scratchpad memory; BUSY arbitration prevents race conditions during concurrent read/write from main CPU and motion control ASIC. Use Value: 55 ns access time ensures sub-100 ns inter-processor handshaking latency, meeting hard real-time scan cycle deadlines under worst-case contention. | Use Scenario: High-throughput audio/video processing in broadcast equipment using two synchronized DSPs sharing coefficient tables and intermediate buffers. IC Role / Device Role / Timing Role: 7130SA55TFI8 serves as low-latency shared memory with INTL/INTR signaling for pipeline stage coordination between parallel processing cores. Use Value: Asynchronous port independence allows one DSP to write FFT results while the other reads prior frame data - no pipeline stalls or software locks needed. |
| Military Avionics Sensor Fusion | Telecom Line Card Packet Buffer |
Use Scenario: Radar and inertial sensor data fusion in airborne mission computers operating across –40°C to +85°C ambient with EMI-hardened requirements. IC Role / Device Role / Timing Role: Dual-port SRAM provides radiation-tolerant, non-volatile-coupled memory for time-critical sensor timestamp alignment and cross-checking between redundant flight control channels. Use Value: Industrial temperature rating and MIL-PRF-38535 QML compliance ensure reliability in extended environmental stress screening (ESS) and burn-in testing. | Use Scenario: ATM or packet switching line cards requiring low-jitter buffering between ingress and egress MAC layers in carrier-grade access equipment. IC Role / Device Role / Timing Role: 7130SA55TFI8 functions as a ping-pong buffer controller - one port accepts incoming frames while the other services transmit scheduler, synchronized via BUSY handshake. Use Value: 55 ns tBDD timing guarantees predictable worst-case latency for frame forwarding, supporting <1 µs jitter budgets in IEEE 1588 PTP implementations. |
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-55AXC | 55 ns access, 2K × 16 organization, 3.3V core (5V tolerant I/O), 100-pin TQFP package. | Higher density and wider bus, but requires voltage translation or mixed-supply design; larger footprint increases PCB area. | Select when 2K×16 capacity and 3.3V system integration outweigh 48-pin TQFP layout advantages. |
| AS7C31026B-55JIN | 55 ns access, 1K × 16 organization, 3.3V supply only, 48-pin SOJ package. | Wider data path but incompatible 3.3V-only interface; SOJ limits reflow yield vs. TQFP; no built-in arbitration logic. | Choose only if board already uses 3.3V logic and external arbitration is acceptable; not drop-in replaceable. |
Compared with CY7C024AV-55AXC and AS7C31026B-55JIN, the 7130SA55TFI8 offers native 5V operation, compact 48-pin TQFP packaging, and integrated arbitration - making it optimal for cost-sensitive, space-constrained industrial designs requiring guaranteed contention resolution without external components.
Availability
7130SA55TFI8 is available at Aetrix Electronics and suitable for industrial automation, avionics subsystems, and telecom infrastructure requiring stable component supply across extended product lifecycles and temperature extremes.
Supply support for 7130SA55TFI8 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 timing, memory interface, RF, and sensor signal conditioning ICs, now part of Renesas Electronics.
The 7130SA/LA family was designed specifically for deterministic dual-processor memory sharing in real-time control systems, emphasizing low-latency arbitration, industrial temperature resilience, and seamless MASTER/SLAVE scalability.
FAQ
What is the maximum operating temperature range for the 7130SA55TFI8?
The 7130SA55TFI8 is rated for industrial temperature operation from –40°C to +85°C, verified per manufacturer specifications and qualified to MIL-PRF-38535 QML for high-reliability applications. This range supports deployment in harsh environments such as factory floors, outdoor telecom cabinets, and vehicle-mounted control units without derating.
Does the 7130SA55TFI8 support battery backup data retention?
No, the 7130SA55TFI8 does not support battery backup data retention. Only LA-suffixed variants (e.g., 7130LA55TFI8) provide 2V data retention capability. The 'SA' suffix denotes standard active power consumption and excludes the low-voltage retention circuitry present in LA versions.
How does BUSY arbitration work on the 7130SA55TFI8 during simultaneous access?
When both ports attempt to access the same memory address, the 7130SA55TFI8 asserts BUSYL or BUSYR low (open-drain) to inhibit writes on the contending port. The winning port is determined by which address/control signals stabilize first relative to the arbitration priority setup time (tAPS = 5 ns). The 7130SA55TFI8 implements this entirely on-die - no external logic required.
Can the 7130SA55TFI8 be used as a SLAVE device in a MASTER/SLAVE configuration?
No, the 7130SA55TFI8 is exclusively a MASTER device. It features BUSY outputs and on-chip arbitration logic required for MASTER operation. SLAVE functionality (BUSY inputs, no arbitration logic) is implemented only in the IDT7140 series. Using 7130SA55TFI8 as a SLAVE would result in incorrect BUSY behavior and potential data corruption.
What package type is used for the 7130SA55TFI8, and are there footprint alternatives?
The 7130SA55TFI8 uses a 48-pin TQFP package, available in PPG64 (10 mm × 10 mm) and PNG64 (14 mm × 14 mm) variants. While IDT also offered 48-pin DIP, LCC, and flatpack options for the 7130 family, the 'TFI8' suffix specifically denotes TQFP packaging - no pin-compatible alternative packages exist for this exact speed/temp/part number combination.
7130SA55TFI8 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:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (10x10)
7130SA55TFI8 FAQ
1.How can I place an order for 7130SA55TFI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA55TFI8 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 7130SA55TFI8 reliable?
The price and inventory of 7130SA55TFI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA55TFI8 is usually 5 days.
3.What payment methods are accepted for 7130SA55TFI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA55TFI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA55TFI8?
7130SA55TFI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA55TFI8 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 7130SA55TFI8?
For technical support, including 7130SA55TFI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA55TFI8 requirements.
6.How does Aetrix verify that 7130SA55TFI8 is sourced from the original manufacturer or authorized distributors?
All 7130SA55TFI8 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 7130SA55TFI8 meets industry standards.
7.What is the process for return or replacement of 7130SA55TFI8?
All 7130SA55TFI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA55TFI8, 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 7130SA55TFI8 part is unused and in its original packaging.
Return procedure for 7130SA55TFI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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