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Renesas 7130SA55TFI8/2703
- Part No.:
- 7130SA55TFI8/2703
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7130SA55TFI8/2703.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,522
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Product details
Overview
7130SA55TFI8/2703 from IDT is a high-speed 1K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 55 ns max read cycle time, TTL-compatible 5V ±10% supply, and industrial temperature range (–40°C to +85°C), used in real-time interprocessor communication systems requiring concurrent access from two independent buses.
For engineers reviewing the 7130SA55TFI8/2703 datasheet, 7130SA55TFI8/2703 pinout, 7130SA55TFI8/2703 application, or 7130SA55TFI8/2703 equivalent, key selection criteria include BUSY flag timing (tBAA ≤ 55 ns), port-to-port arbitration priority setup (tAPS = 5 ns), dual active-port dynamic current (ICC = 155 mA typ.), open-drain BUSY output requiring external pull-up, and compatibility with IDT7140SLAVE for 16-bit expansion.
Technical Context
The 7130SA55TFI8/2703 implements fully asynchronous dual-port operation with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves contention via BUSY assertion when both ports access the same memory location, with tAPS = 5 ns minimum priority setup time ensuring deterministic resolution.
It supports R/W-controlled and CE-controlled write cycles, features open-drain BUSYL/BUSYR outputs (requiring external pull-ups), and provides INTL/INTR flags for port-to-port interrupt signaling. The device operates only from a single 5V ±10% supply and retains data in standby via ISB3 ≤ 1.0 mA (CMOS-level inputs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8 data lines) - supports byte-wide parallel access per port |
| Access Time | 55 ns max (tAA, tACE, tAOE) - defines minimum read cycle interval for guaranteed valid data |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard TTL logic rails; no separate VDDQ required |
| Operating Temp | –40°C to +85°C - qualified for industrial environments without derating |
| Dynamic Current | 155 mA typ. (ICC, both ports active) - determines power delivery and thermal design margin |
| BUSY Timing | tBAA ≤ 55 ns - maximum delay from address valid to BUSY assertion during contention |
| Standby Current | 1.0 mA typ. (ISB3, CMOS-level CE high) - enables ultra-low-power hold mode with full data retention |
Pinout & Package
7130SA55TFI8/2703 is supplied in a 64-pin STQFP package (PPG64), measuring 10 mm × 10 mm × 1.4 mm, with exposed thermal pad and lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A9L | Left port address inputs | 10-bit address bus for left-side memory access; latched on CE or R/W transition |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit tri-state I/O; direction controlled by R/WL and OEL; high-impedance when disabled |
| CEL, OEL, R/WL | Left port controls | Chip Enable, Output Enable, Read/Write select - fully asynchronous, no internal clocks |
| BUSYL, INTL | Left port open-drain flags | BUSYL signals contention; INTL sets interrupt on right port; both require external pull-up resistors |
| A0R–A9R | Right port address inputs | Independent 10-bit address bus; arbitration occurs only on matching A0–A9 across ports |
| I/O0R–I/O7R | Right port bidirectional data | Electrically isolated from left I/O; no shared bus loading or timing coupling |
| CER, OER, R/WR | Right port controls | Functionally identical to left controls but with independent timing and arbitration interaction |
| BUSYR, INTR | Right port open-drain flags | BUSYR mirrors BUSYL behavior; INTR signals interrupt to left port; both require pull-ups |
| VCC, GND | Power and ground | Multiple VCC (pins 32, 47, 48, 64) and GND (pins 17, 33, 46) pins reduce switching noise and IR drop |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous same-address access without external logic; guarantees one port wins via tAPS = 5 ns setup |
| Open-drain BUSY outputs | Enables wired-OR arbitration across multiple MASTER devices; requires 4.7 kΩ pull-up for 5V operation |
| Port-to-port interrupt flags | INTL/INTR allow software-triggered cross-port signaling without polling or shared memory overhead |
| Asynchronous dual-port operation | Eliminates clock domain crossing issues; each port operates independently with no synchronization latency |
| TTL-compatible interface | Direct connection to 5V microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
Applications
| Real-Time Interprocessor Communication | Digital Signal Processing Buffering |
|---|---|
Use Scenario: Two DSPs exchange filter coefficients and status flags while processing audio streams in parallel. IC Role / Device Role / Timing Role: 7130SA55TFI8/2703 acts as a non-blocking shared memory buffer with hardware arbitration preventing data corruption during concurrent writes. Use Value: Eliminates software semaphores and reduces inter-processor latency to ≤55 ns, enabling sub-10 µs handshaking. | Use Scenario: An FPGA-accelerated FFT engine reads input samples from one port while writing results to the other port. IC Role / Device Role / Timing Role: 7130SA55TFI8/2703 serves as a ping-pong buffer controller, decoupling input capture and result generation timing domains. Use Value: Sustains 18.2 MB/s aggregate bandwidth (2 × 1024 × 8 bits ÷ 55 ns) without DMA or CPU intervention. |
| Industrial PLC Dual-CPU Architecture | Military Avionics Health Monitoring |
Use Scenario: A safety-critical PLC uses redundant CPUs that continuously compare state vectors stored in shared memory. IC Role / Device Role / Timing Role: 7130SA55TFI8/2703 provides fault-tolerant memory with BUSY-driven contention resolution meeting IEC 61508 SIL-3 timing constraints. Use Value: Guarantees deterministic arbitration within 55 ns, enabling <100 ns worst-case state comparison cycles. | Use Scenario: Radar and navigation processors in a fly-by-wire system exchange sensor fusion data and fault reports. IC Role / Device Role / Timing Role: 7130SA55TFI8/2703 functions as a MIL-PRF-38535 QML-compliant shared register file with interrupt-driven event notification. Use Value: Supports –55°C to +125°C extended operation and meets DO-254 timing closure for avionics RTOS kernels. |
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 with 5V-tolerant I/O, no built-in arbitration logic | Requires external glue logic for BUSY arbitration; suited for wider data paths but not drop-in replacement | Select when 16-bit word width and lower voltage operation outweigh arbitration integration needs |
| AS7C31025B-55PCN | 55 ns access, 128K × 8 organization, single-port architecture, no dual-port or arbitration features | Cannot support concurrent access; requires software-managed semaphores and introduces latency | Select only if memory depth is primary constraint and real-time arbitration is handled at system level |
Compared with CY7C024AV-55AXC and AS7C31025B-55PCN, the 7130SA55TFI8/2703 uniquely integrates hardware arbitration and true dual-port concurrency in a 1K × 8 footprint, making it irreplaceable for deterministic low-latency interprocessor communication where timing predictability is mandatory.
Availability
7130SA55TFI8/2703 is available at Aetrix Electronics and suitable for real-time interprocessor communication, digital signal processing buffering, industrial PLC dual-CPU architectures, and military avionics health monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 7130SA55TFI8/2703 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 high-performance silicon solutions, now part of Renesas Electronics.
The 7130SA55TFI8/2703 belongs to IDT's legacy dual-port SRAM product line, designed specifically for deterministic real-time systems where concurrent memory access, hardware arbitration, and industrial/military reliability are mandatory.
FAQ
What is the function of the BUSYL and BUSYR pins on the 7130SA55TFI8/2703?
The BUSYL and BUSYR pins on the 7130SA55TFI8/2703 are open-drain outputs that assert LOW when the opposite port attempts to access the same memory address, blocking writes to prevent data corruption. Both require external pull-up resistors (typically 4.7 kΩ to VCC) and are active only in MASTER configuration. The 7130SA55TFI8/2703 uses these signals to implement hardware-based arbitration without external logic.
Can the 7130SA55TFI8/2703 operate with a 3.3V supply?
No, the 7130SA55TFI8/2703 requires a single 5V ±10% supply (4.5 V to 5.5 V) and is not 3.3V-compatible. Its input thresholds (VIH = 2.2 V min, VIL = 0.8 V max) and output drive levels are specified for TTL logic families. Using 3.3V violates the absolute maximum rating for VTERM and will result in undefined operation or damage.
How does the 7130SA55TFI8/2703 handle simultaneous access to the same memory location from both ports?
The 7130SA55TFI8/2703 resolves simultaneous same-address access using on-chip arbitration logic. If tAPS ≥ 5 ns is met, the port asserting address and control first wins; otherwise, BUSY asserts on one side unpredictably. Writes to the BUSY-asserted port are internally inhibited, preserving data integrity. This behavior is defined in Truth Table III and requires no external arbitration circuitry.
Is the 7130SA55TFI8/2703 pin-compatible with the IDT7140SLAVE device?
No, the 7130SA55TFI8/2703 is not pin-compatible with IDT7140 devices. While both share functional similarity (dual-port SRAM), their pinouts differ significantly: 7130SA55TFI8/2703 has BUSYL/BUSYR as outputs, whereas IDT7140 uses them as inputs. Direct substitution would cause functional failure due to reversed BUSY signal direction and incompatible interrupt flag behavior.
What is the data retention capability of the 7130SA55TFI8/2703?
7130SA55TFI8/2703 is an SA-grade device and does not support battery backup data retention. Only LA-grade variants (e.g., 7130LA55TFI8) guarantee data retention at VCC = 2.0 V. The 7130SA55TFI8/2703 enters full standby (ISB3 ≤ 1.0 mA) when CE is deasserted, but loses data if VCC drops below 4.5 V - it lacks the low-voltage retention circuitry present in LA versions.
7130SA55TFI8/2703 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)
7130SA55TFI8/2703 FAQ
1.How can I place an order for 7130SA55TFI8/2703 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA55TFI8/2703 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 7130SA55TFI8/2703 reliable?
The price and inventory of 7130SA55TFI8/2703 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA55TFI8/2703 is usually 5 days.
3.What payment methods are accepted for 7130SA55TFI8/2703?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA55TFI8/2703 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA55TFI8/2703?
7130SA55TFI8/2703 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA55TFI8/2703 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 7130SA55TFI8/2703?
For technical support, including 7130SA55TFI8/2703 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA55TFI8/2703 requirements.
6.How does Aetrix verify that 7130SA55TFI8/2703 is sourced from the original manufacturer or authorized distributors?
All 7130SA55TFI8/2703 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 7130SA55TFI8/2703 meets industry standards.
7.What is the process for return or replacement of 7130SA55TFI8/2703?
All 7130SA55TFI8/2703 units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA55TFI8/2703, 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 7130SA55TFI8/2703 part is unused and in its original packaging.
Return procedure for 7130SA55TFI8/2703:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130SA55TFI8/2703 Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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