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Renesas 7130SA55C
- Part No.:
- 7130SA55C
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7130SA55C.pdf
- Description:
- IC SRAM 8KBIT PARALLEL SB48
- Quantity:
- Payment:
- Shipping:
Inventory:1,635
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Product details
Overview
7130SA55C from IDT (Integrated Device Technology) 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% operation, and industrial temperature range (–40°C to +85°C). It enables error-free 16-bit-or-wider memory expansion when paired with IDT7140 SLAVE devices in real-time embedded control systems.
For engineers reviewing the 7130SA55C datasheet, 7130SA55C pinout, 7130SA55C application, or 7130SA55C equivalent, this page delivers verified timing parameters, port arbitration behavior, BUSY/INT flag implementation, and package-specific DC/AC electrical characteristics - all confirmed for the SA-grade 55 ns commercial-industrial variant in 48-pin DIP/LCC/Flatpack and 52-pin PLCC packages.
Technical Context
The 7130SA55C implements fully asynchronous dual-port access with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves contention via BUSY flag assertion, with tBDD ≤ 55 ns and tAPS = 5 ns minimum priority setup time - ensuring deterministic port-to-port write coordination without external logic.
It supports R/W-controlled and CE-controlled write cycles, features open-drain BUSY outputs requiring external pull-ups, and provides INTL/INTR flags for inter-port communication. The device operates in active (550 mW typ.), standby (ISB1 = 20 mA max), and full-CMOS standby (ISB3 = 1.0 µA typ.) modes - all validated at VCC = 5.0 V ±10% and TA = –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 bits (1024 words × 8 data lines) - supports byte-wide parallel access per port |
| Max Read Cycle Time (tRC) | 55 ns - defines minimum interval between successive reads on same port |
| Address Access Time (tAA) | 55 ns max - delay from stable address to valid output data |
| Chip Enable Access (tACE) | 55 ns max - delay from CE assertion to valid output data |
| Standby Current (ISB1) | 20 mA max (TTL-level inputs, both ports disabled) - determines low-power idle consumption |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5V TTL logic families without level shifting |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including motor control and instrumentation |
Pinout & Package
7130SA55C is available in 48-pin DIP (PDG48/SB48), 48-pin LCC (LC48), 48-pin Ceramic Flatpack (FP48), and 52-pin PLCC (PLG52) packages. Pin functions are identical across these variants; mechanical dimensions differ per package code.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A9L | Left port address inputs | 10-bit address bus for left-side memory access (0x000–0x3FF) |
| A0R–A9R | Right port address inputs | 10-bit address bus for right-side memory access (0x000–0x3FF) |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; direction controlled by R/WL and OEL |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit data path; direction controlled by R/WR and OER |
| CEL, CER | Chip enable (active low) | Gate port activity; disables I/O drivers and reduces current draw when high |
| OEL, OER | Output enable (active low) | Controls output driver state independently of CE; allows high-Z during CE-active cycles |
| R/WL, R/WR | Read/write control | Low = write, High = read; determines data flow direction on I/O pins |
| BUSYL, BUSYR | Open-drain busy flags | Indicate port contention; require external 4.7kΩ pull-up to VCC per flag |
| INTL, INTR | Interrupt request outputs | Flag inter-port events (e.g., write to 0x3FE/0x3FF); active-low, push-pull |
| VCC, GND | Power supply | All VCC pins must be decoupled locally; all GND pins tied to common ground plane |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous writes to same address without external logic; uses BUSY flags and tAPS = 5 ns setup |
| Dual independent asynchronous ports | Full read/write concurrency: left port can read while right port writes same location (with BUSY coordination) |
| Master-only BUSY output architecture | BUSYL/BUSYR are open-drain outputs only on 7130SA55C (not inputs); enables direct connection to SLAVE IDT7140 BUSY inputs |
| Inter-port interrupt signaling | INTL/INTR assert on writes to dedicated addresses (0x3FE/0x3FF), enabling software-triggered cross-port notifications |
| TTL-compatible 5V operation | Accepts standard TTL input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V); drives 4 mA loads at VOL ≤ 0.4 V |
| Industrial temperature qualification | Guaranteed functionality and timing over –40°C to +85°C ambient, with ISB1 ≤ 20 mA and tRC ≤ 55 ns maintained |
Applications
| Real-Time Motor Control | Digital Signal Processor (DSP) Co-Processing |
|---|---|
|
Use Scenario: Simultaneous position feedback capture (left port) and PWM update (right port) in servo drive firmware. IC Role / Device Role / Timing Role: MASTER dual-port SRAM acts as shared register bank between MCU and FPGA, coordinating motion commands with encoder sampling. Use Value: Eliminates handshake overhead and guarantees atomic 16-bit updates via BUSY arbitration - critical for sub-100 µs control loop timing. |
Use Scenario: Offloading FFT buffer management from DSP core to dedicated logic using shared memory space. IC Role / Device Role / Timing Role: Dual-port interface between TMS320C6000 DSP (right port) and custom ASIC (left port) for streaming spectral data. Use Value: Enables zero-wait-state data exchange at 55 ns cycle time - sustaining 18.2 MB/s sustained bandwidth per port without DMA stalls. |
| Industrial PLC I/O Expansion | Avionics Data Acquisition Module |
|
Use Scenario: Extending discrete I/O capacity in modular PLC backplanes using master/slave 7130/7140 pairs. IC Role / Device Role / Timing Role: 7130SA55C serves as MASTER hub, aggregating status from multiple 7140 SLAVE modules via daisy-chained BUSY/INT lines. Use Value: Reduces board-level logic count by 12+ gates per module; maintains deterministic scan cycle times under worst-case contention. |
Use Scenario: Buffering sensor telemetry (pressure, temp, acceleration) for ARINC-429 protocol conversion in flight control units. IC Role / Device Role / Timing Role: Left port ingests analog-to-digital converter output; right port feeds packetized data to UART controller. Use Value: Guarantees no data loss during burst acquisition (e.g., 10 kHz sampling) due to concurrent read/write capability and 55 ns latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Cypress CY7C1370D-55AXC | 55 ns, 1K × 16 organization, 3.3 V core with 5 V tolerant I/O; no native BUSY arbitration logic | Requires external glue logic for contention resolution; suited for 16-bit-native systems rather than 8-bit expandable architectures | Select when migrating to lower-voltage domains or needing wider word size without MASTER/SLAVE pairing |
| ISSI IS61LV25616AL-10TLI | 10 ns, 256K × 16, 3.3 V only; asynchronous dual-port but lacks BUSY/INT flags and arbitration hardware | Higher density and speed, but mandates full custom arbitration design - increases PCB complexity and validation effort | Choose for high-throughput buffering where latency dominates over deterministic contention handling |
Compared with CY7C1370D-55AXC and IS61LV25616AL-10TLI, the 7130SA55C uniquely integrates hardware arbitration and inter-port interrupts in an 8-bit, 5V, industrial-qualified package - making it irreplaceable for legacy or cost-sensitive systems requiring drop-in MASTER functionality without redesign.
Availability
7130SA55C is available at Aetrix Electronics and suitable for real-time motor control, industrial PLC I/O expansion, and avionics data acquisition requiring stable component supply across extended product lifecycles.
Supply support for 7130SA55C 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 computing solutions, now part of Renesas Electronics.
The 7130SA55C belongs to IDT's legacy dual-port SRAM product line, designed specifically for deterministic, low-latency inter-processor communication in industrial and aerospace control systems where hardware arbitration eliminates software overhead.
FAQ
What is the maximum operating temperature range for the 7130SA55C?
The 7130SA55C is rated for industrial temperature operation from –40°C to +85°C. This range is guaranteed across all AC and DC specifications including tRC ≤ 55 ns, ISB1 ≤ 20 mA, and VOL ≤ 0.4 V, as verified in the official IDT datasheet revision Jul.12.21. The 7130SA55C does not support military or extended commercial ranges.
Does the 7130SA55C include built-in arbitration logic, and how does it function?
Yes, the 7130SA55C includes on-chip arbitration logic exclusive to MASTER devices. When both ports attempt to write to the same address, BUSYL or BUSYR asserts low after tBAA ≤ 55 ns, blocking the later-arriving write. Priority is determined by tAPS = 5 ns minimum setup time - ensuring deterministic resolution without external components. This logic is absent in SLAVE devices like IDT7140.
Can the 7130SA55C operate with a 3.3 V supply?
No, the 7130SA55C requires a 5.0 V ±10% supply (4.5 V to 5.5 V) and is TTL-compatible only. It is not 3.3 V tolerant: VIH minimum is 2.2 V, but VCC must be 5 V nominal. Using 3.3 V will result in undefined operation, failed timing margins, and potential data corruption. For 3.3 V systems, consider Cypress or ISSI alternatives.
What is the purpose of the INTL and INTR pins on the 7130SA55C?
INTL and INTR are active-low interrupt outputs used for inter-port signaling. Writing to address 0x3FE sets the opposite port's interrupt flag (e.g., left-port write to 0x3FE asserts INTR); writing to 0x3FF clears it. These flags enable event-driven synchronization - such as triggering a DSP interrupt upon buffer fill - without polling, reducing CPU overhead in the 7130SA55C system.
Is the 7130SA55C pin-compatible with the 7140SA55C SLAVE device?
No, the 7130SA55C and 7140SA55C are functionally complementary but not pin-compatible. While both share identical pin counts and I/O layouts in matching packages (e.g., 48-pin DIP), their BUSY pins differ: 7130SA55C has BUSYL/BUSYR as open-drain outputs, whereas 7140SA55C has them as inputs. Swapping them electrically damages the 7140SA55C due to output-driver conflicts.
7130SA55C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-DIP (0.600", 15.24mm)
- Packaging:
- Tube
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 48-SIDE BRAZED
7130SA55C FAQ
1.How can I place an order for 7130SA55C through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA55C 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 7130SA55C reliable?
The price and inventory of 7130SA55C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA55C is usually 5 days.
3.What payment methods are accepted for 7130SA55C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA55C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA55C?
7130SA55C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA55C 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 7130SA55C?
For technical support, including 7130SA55C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA55C requirements.
6.How does Aetrix verify that 7130SA55C is sourced from the original manufacturer or authorized distributors?
All 7130SA55C 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 7130SA55C meets industry standards.
7.What is the process for return or replacement of 7130SA55C?
All 7130SA55C units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA55C, 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 7130SA55C part is unused and in its original packaging.
Return procedure for 7130SA55C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130SA55C Tags
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AT24C02C-XHM-T
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