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Renesas 7130SA55L48B
- Part No.:
- 7130SA55L48B
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-LCC
- Datasheet:
-
7130SA55L48B.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 48LCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,260
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Product details
Overview
7130SA55L48B 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, open-drain BUSY outputs requiring pull-up resistors, and TTL-compatible 5V ±10% operation - used in real-time inter-processor communication buffers for industrial motion controllers.
For engineers reviewing the 7130SA55L48B datasheet, 7130SA55L48B pinout, 7130SA55L48B application, or 7130SA55L48B equivalent, key selection criteria include BUSY arbitration timing (tBAA ≤ 30 ns), dual-port asynchronous access independence, 55 ns speed grade compatibility, and 48-pin flatpack package mechanical fit in legacy military/industrial PCBs.
Technical Context
The 7130SA55L48B implements fully independent left/right port control 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). Its on-chip arbitration logic resolves simultaneous access to the same memory location by asserting BUSYL/BUSYR outputs - with tBDD ≤ 55 ns delay to valid read data after BUSY deassertion.
It supports MASTER-only functions: BUSY outputs (open-drain), INTL/INTR flags for port-to-port signaling, and automatic power-down via CE assertion. Unlike SLAVE IDT7140, it does not accept BUSY as input and cannot be cascaded as a slave unit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide), enabling compact dual-CPU shared memory without external width expansion logic |
| Access Time | 55 ns max (tAA, tACE, tAOE), guaranteeing deterministic latency for hard real-time interrupt response in motion control loops |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V), compatible with legacy TTL logic families and eliminating need for voltage translation |
| Operating Temp | –40°C to +85°C (Industrial grade), validated for deployment in factory automation enclosures without forced cooling |
| Standby Current | 20 mA max (ISB1, TTL-level CE high), enabling low-power sleep modes during CPU idle periods |
| Package | 48-pin ceramic flatpack (FP48), hermetically sealed for high-reliability aerospace/military applications |
| BUSY Logic | Open-drain BUSYL/BUSYR outputs (require external pull-up), providing wired-OR arbitration signaling between co-located processors |
Pinout & Package
48-pin ceramic flatpack (FP48) package, body size ≈ 0.75 in × 0.75 in × 0.11 in, side-brazed construction for thermal and mechanical stability in high-vibration environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Two dedicated ground pins minimize ground bounce during simultaneous dual-port transitions |
| VCC (Pin 25) | Power supply | Single 5V supply pin; all VCC pins must be connected per datasheet Note 1 |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; controls dynamic current (ICC) and standby modes (ISB1–ISB4) |
| OEL / OER | Output enable (left/right) | Active-low tri-states I/O bus; allows shared data bus usage with other peripherals |
| R/WL / R/WR | Read/write direction (left/right) | High = read, low = write; determines data flow direction independently per port |
| BUSYL / BUSYR | Arbitration flag (output only) | Open-drain outputs indicating port contention; require external 4.7kΩ pull-up to VCC |
| INTL / INTR | Interrupt flag (output) | Asynchronous set/reset signals for cross-port event notification (e.g., buffer full) |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses supporting full 1K memory map per port, no address latching required |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (bidirectional) | 8-bit parallel data paths; high-impedance when OE or CE inactive, enabling bus sharing |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves same-address contention without external glue logic; guarantees deterministic priority via tAPS ≥ 5 ns setup |
| Dual independent asynchronous ports | Enables concurrent read/write operations - e.g., CPU A writes status while CPU B reads command queue - with zero wait states |
| Open-drain BUSY outputs | Supports wired-OR arbitration bus across multiple dual-port RAMs in multi-master systems |
| Port-to-port interrupt signaling | INTL/INTR flags allow one processor to signal completion or request service from the other without polling overhead |
| 55 ns industrial-grade timing | Meets hard real-time deadlines in PLC scan cycles and servo loop updates at up to 18.2 kHz |
Applications
| Industrial Motion Controller | Military Avionics Data Buffer |
|---|---|
Use Scenario: Two tightly coupled DSPs exchange position commands and encoder feedback in a closed-loop servo drive. IC Role / Device Role / Timing Role: MASTER dual-port SRAM acts as deterministic shared memory with hardware arbitration, eliminating software mutex overhead. Use Value: 55 ns access ensures sub-100 ns inter-processor message latency, meeting IEC 61800-3 functional safety timing constraints. | Use Scenario: Flight control computer and sensor acquisition module share telemetry and health status in a DO-254-compliant avionics box. IC Role / Device Role / Timing Role: FP48-packaged 7130SA55L48B provides radiation-tolerant, hermetic shared memory with MIL-PRF-38535 QML compliance. Use Value: Open-drain BUSY outputs interface directly with discrete arbitration logic in legacy analog-digital hybrid systems. |
| Automated Test Equipment (ATE) | Redundant Programmable Logic Controller (PLC) |
Use Scenario: Pattern generator and response analyzer cores access shared test vector memory in boundary-scan validation hardware. IC Role / Device Role / Timing Role: Dual-port architecture enables simultaneous vector load (port A) and result capture (port B) without pipeline stalls. Use Value: tBDD ≤ 55 ns ensures valid response data appears within one ATE clock cycle after BUSY deassertion. | Use Scenario: Primary and backup CPU modules maintain synchronized process state via mirrored memory in safety-critical infrastructure control. IC Role / Device Role / Timing Role: MASTER arbitration prevents conflicting writes during failover handshaking sequences. Use Value: INTL/INTR flags trigger deterministic switchover within <1 µs, satisfying SIL-3 diagnostic coverage requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C131-55JC | 55 ns, 1K × 8, 5V, 48-pin DIP; no on-chip arbitration - requires external logic for BUSY generation | Lacks integrated arbitration; suitable only where external CPLD handles contention resolution | Select only if board redesign accommodates extra logic and timing budget allows added propagation delay |
| IDT7142S55PF | 55 ns, 2K × 8, 5V, 52-pin PLCC; SLAVE-only device - no BUSY output, accepts BUSY input | Cannot replace MASTER function; usable only as expansion slave paired with IDT7130 | Valid only in MASTER/SLAVE configurations where memory width expansion to 16-bit is required |
Compared with CY7C131-55JC and IDT7142S55PF, the 7130SA55L48B uniquely integrates arbitration and interrupt logic in a single FP48 package - reducing component count and eliminating timing uncertainty from external arbitration paths.
Availability
7130SA55L48B is available at Aetrix Electronics and suitable for industrial motion controllers, military avionics data buffers, and redundant programmable logic controllers requiring stable component supply across extended product lifecycles.
Supply support for 7130SA55L48B 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, and interface solutions for communications, computing, and industrial markets.
The IDT7130 family was designed specifically for deterministic inter-processor communication in real-time embedded systems - emphasizing hardware arbitration, low-latency dual-port access, and ruggedized packaging for harsh environments.
FAQ
What is the maximum operating temperature range for the 7130SA55L48B?
The 7130SA55L48B 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) and applies to all SA-speed variants in FP48 packaging. It does not support military-grade –55°C to +125°C operation - that range is reserved for MIL-qualified versions with different suffixes.
Does the 7130SA55L48B support battery backup data retention?
No, the 7130SA55L48B does not support battery backup data retention. That feature is exclusive to LA-suffix variants (e.g., 7130LA55L48B), which specify VDR = 2.0 V and ICCDR ≤ 4000 µA under data retention conditions. The "SA" in 7130SA55L48B explicitly denotes standard active power characteristics without low-voltage retention capability.
How are BUSY signals used in the 7130SA55L48B?
In the 7130SA55L48B, BUSYL and BUSYR are open-drain output signals indicating port contention. When both ports attempt access to the same address, the winning port proceeds while the losing port's BUSY line is pulled LOW (requiring external pull-up). These outputs are never inputs - unlike SLAVE IDT7140 devices - and must be externally terminated to VCC with 4.7kΩ resistors per datasheet Note 2.
Can the 7130SA55L48B be used as a SLAVE device in a MASTER/SLAVE configuration?
No, the 7130SA55L48B is exclusively a MASTER device. It contains on-chip arbitration logic and drives BUSY outputs but lacks BUSY input functionality. SLAVE operation requires IDT7140-series parts (e.g., 7140SA55L48B), which accept BUSY as an input to inhibit writes. Attempting to use 7130SA55L48B as a SLAVE will result in non-functional arbitration and potential data corruption.
What package type does the 7130SA55L48B use, and what are its mechanical dimensions?
The 7130SA55L48B uses a 48-pin ceramic flatpack (FP48) package. Per datasheet Note 3 in Pin Configurations section, the body dimensions are approximately 0.75 inch × 0.75 inch × 0.11 inch (19.05 mm × 19.05 mm × 2.79 mm), with side-brazed leads for hermetic sealing and thermal stability in high-reliability applications.
7130SA55L48B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-LCC
- 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:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LCC (14.22x14.22)
7130SA55L48B FAQ
1.How can I place an order for 7130SA55L48B through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA55L48B 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 7130SA55L48B reliable?
The price and inventory of 7130SA55L48B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA55L48B is usually 5 days.
3.What payment methods are accepted for 7130SA55L48B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA55L48B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA55L48B?
7130SA55L48B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA55L48B 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 7130SA55L48B?
For technical support, including 7130SA55L48B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA55L48B requirements.
6.How does Aetrix verify that 7130SA55L48B is sourced from the original manufacturer or authorized distributors?
All 7130SA55L48B 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 7130SA55L48B meets industry standards.
7.What is the process for return or replacement of 7130SA55L48B?
All 7130SA55L48B units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA55L48B, 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 7130SA55L48B part is unused and in its original packaging.
Return procedure for 7130SA55L48B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130SA55L48B Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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