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Renesas 7130SA100JI8
- Part No.:
- 7130SA100JI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130SA100JI8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,316
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Product details
Overview
7130SA100JI8 from IDT (Integrated Device Technology) is a high-speed 1K × 8 dual-port static RAM with master arbitration logic, 100ns maximum read/write cycle time, TTL-compatible 5V ±10% operation, and industrial temperature range (–40°C to +85°C). It enables simultaneous independent access from left and right ports in real-time control systems requiring deterministic memory contention resolution.
For engineers reviewing the 7130SA100JI8 datasheet, 7130SA100JI8 pinout, 7130SA100JI8 application, or 7130SA100JI8 equivalent, this page delivers verified timing parameters, BUSY/INT arbitration behavior, dual-port power states, package-specific pin mapping, and validated alternatives for 16-bit memory expansion architectures.
Technical Context
The 7130SA100JI8 implements fully asynchronous dual-port operation with separate address, data, and control lines per port. Its on-chip arbitration logic resolves port-to-port contention via open-drain BUSY outputs (BUSYL/BUSYR), requiring external pull-up resistors, and supports interrupt flag generation (INTL/INTR) for inter-processor communication.
It features CE-controlled and R/W-controlled write cycles, tBDD-based BUSY assertion for write collision detection, and supports MASTER/SLAVE cascading with IDT7140 to expand data width. The device operates in four standby modes (ISB1–ISB4) with CMOS-level input sensitivity enabling ultra-low-power retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 (1024 words × 8 bits), dual-port SRAM with independent left/right address/data/control paths |
| Max Read Cycle Time (tRC) | 100ns - defines minimum interval between successive reads on same port; determines real-time system throughput ceiling |
| Bus Arbitration | On-chip priority logic with BUSY output flags - prevents data corruption during simultaneous access to same address; requires external pull-up |
| Supply Voltage | 5.0V ±10% - compatible with legacy TTL logic families without level-shifting circuitry |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded environments including motor drives and PLCs |
| Power Consumption | Active: 110mA typ. (550mW); Full Standby (ISB3): 0.2mA typ. - enables low-duty-cycle monitoring applications |
| Package | 48-pin ceramic flatpack (FP48) - hermetic, MIL-PRF-38535 QML-compliant for high-reliability deployments |
Pinout & Package
7130SA100JI8 is supplied in a 48-pin ceramic flatpack (FP48) package with 0.75″ × 0.75″ body size and side-brazed leads. Pin 1 index corner marked; all VCC pins require decoupling, all GND pins must be solidly grounded.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | Four dedicated ground connections reduce ground bounce and improve noise immunity in high-speed dual-port operation |
| VCC (Pins 23, 47) | Power supply | Dual VCC pins enable localized decoupling near each port's control logic, minimizing voltage droop during simultaneous access |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables respective port; controls entry into ISB1/ISB2 standby modes when high |
| OEL / OER | Output Enable (Left/Right) | Active-low enables I/O drivers; sets I/O pins to high-Z when deasserted, allowing bus sharing |
| R/WL / R/WR | Read/Write Control (Left/Right) | High = read, Low = write; determines direction of data flow on associated I/O bus |
| BUSYL / BUSYR | Arbitration Flag Output (Open Drain) | Drives low when opposing port writes to same address; requires external pull-up resistor to VCC |
| INTL / INTR | Interrupt Flag Output | Indicates inter-port event (e.g., INTL set by right-port write to address 3FFh); used for handshake signaling |
| A0L–A9L / A0R–A9R | Address Inputs (Left/Right) | 10-bit address buses support full 1K address space per port; no internal address latching |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional Data Bus (Left/Right) | 8-bit parallel data paths; tri-state controlled by OE and R/W; electrically isolated between ports |
Key Features
| Feature | Design Value |
|---|---|
| Master arbitration logic | Resolves port conflicts without external logic; eliminates need for discrete priority encoders in 16-bit+ systems using IDT7130/IDT7140 pairs |
| Open-drain BUSY outputs | Enables wired-OR arbitration across multiple dual-port devices; simplifies system-level BUSY bus implementation |
| Port-to-port interrupt signaling | INTL/INTR flags allow one processor to signal completion or request service from another without polling memory locations |
| Four standby current modes | ISB3 (full CMOS standby) draws only 0.2mA typ., enabling battery-backed operation in maintenance or configuration modes |
| TTL-compatible interface | Eliminates level translators in 5V microcontroller/microprocessor designs; VIH = 2.2V min., VIL = 0.8V max. |
Applications
| Industrial Motion Controller | Avionics Data Acquisition Unit |
|---|---|
Use Scenario: Real-time servo loop execution where FPGA reads position feedback while DSP writes new trajectory commands to shared memory. IC Role / Device Role / Timing Role: Dual-port SRAM acts as deterministic, contention-managed buffer between asynchronous processing domains; BUSY signals enforce atomic updates. Use Value: Eliminates software semaphores and reduces worst-case latency to ≤100ns, meeting IEC 61800-3 functional safety timing constraints. | Use Scenario: Multi-sensor fusion in flight control computer, where ADC subsystem writes raw sensor data while CPU reads processed telemetry for display. IC Role / Device Role / Timing Role: Provides non-blocking memory access for time-critical sensor ingestion and display rendering threads operating at different clock domains. Use Value: Prevents data loss during burst sampling (e.g., 100ksps accelerometers) by guaranteeing concurrent read/write without arbitration delay penalties. |
| Redundant PLC Memory Module | Military Radios Baseband Processor |
Use Scenario: Hot-swappable memory module in fault-tolerant programmable logic controller, where primary and backup CPUs maintain synchronized state. IC Role / Device Role / Timing Role: Serves as mirrored working memory with hardware-enforced write coherency via BUSY-driven backpressure. Use Value: Enables sub-microsecond failover response by eliminating software synchronization overhead and ensuring atomic cross-CPU updates. | Use Scenario: Baseband processing in secure HF/VHF radio, where modem ASIC writes demodulated symbols while ARM core runs encryption stack. IC Role / Device Role / Timing Role: Acts as low-latency, radiation-tolerant (ceramic FP48) memory bridge between hardened digital signal path and application processor. Use Value: Meets MIL-STD-810G shock/vibe requirements and provides deterministic 100ns memory access for real-time cryptographic key scheduling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C135-100AXC | 1K × 8, 100ns, 5V, 48-pin TQFP; no on-chip arbitration; requires external logic for BUSY generation | Lacks integrated master arbitration; suitable only where external CPLD/FPGA handles contention resolution | Select when board layout allows CPLD-based arbitration and lower cost outweighs design complexity |
| IDT7140SA100JI8 | 1K × 8 slave dual-port; identical timing but no arbitration logic; BUSY pins are inputs only | Must be paired with IDT7130 as master; cannot operate standalone in arbitration-critical roles | Choose only for 16-bit+ expansion where 7130SA100JI8 serves as master and this as slave |
Compared with CY7C135-100AXC and IDT7140SA100JI8, the 7130SA100JI8 uniquely integrates arbitration logic and open-drain BUSY outputs, enabling drop-in deployment in systems requiring hardware-enforced memory coherency without additional logic components.
Availability
7130SA100JI8 is available at Aetrix Electronics and suitable for industrial motion controllers, avionics data acquisition units, and redundant PLC memory modules requiring stable component supply across extended product lifecycles.
Supply support for 7130SA100JI8 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 timing, memory, and interface solutions, now part of Renesas Electronics.
The IDT7130 product line was designed specifically for deterministic dual-processor and real-time embedded systems requiring hardware-managed memory arbitration and zero-software-overhead inter-processor communication.
FAQ
What is the function of BUSYL and BUSYR on the 7130SA100JI8?
BUSYL and BUSYR are open-drain arbitration flag outputs on the 7130SA100JI8. When asserted low, they indicate that the opposing port is writing to the same memory address, blocking writes on the local port. External pull-up resistors to VCC are mandatory, as specified in the datasheet note: "BUSY is open drain output and requires pullup resistor." This hardware arbitration ensures deterministic memory coherency without software intervention.
Does the 7130SA100JI8 support battery backup operation?
No, the 7130SA100JI8 does not support battery backup operation. Battery retention capability (2V data retention) is exclusive to the LA variant (e.g., 7130LA100JI8). The 'SA' suffix denotes standard active power consumption (550mW typ.), while 'LA' indicates low-power architecture with 200µW typical battery current. The 7130SA100JI8 retains data only while VCC remains within 4.5V–5.5V.
Can the 7130SA100JI8 operate with mixed voltage interfaces?
No, the 7130SA100JI8 requires a single 5.0V ±10% supply and is strictly TTL-compatible. Its input thresholds (VIH ≥ 2.2V, VIL ≤ 0.8V) and output drive levels (VOH ≥ 2.4V at –4mA, VOL ≤ 0.4V at 4mA) are optimized for 5V logic families. Interfacing with 3.3V or 1.8V systems requires level-shifting circuitry; no internal voltage translation is provided.
How does the 7130SA100JI8 handle simultaneous access to the same memory location?
The 7130SA100JI8 uses on-chip arbitration logic to resolve simultaneous access. If both ports attempt to write to the same address, the port that asserts its address and control signals first (meeting tAPS ≥ 5ns setup) wins; the losing port's BUSY output goes low, inhibiting its write. Reads during contention return valid data after tBDD delay (≤35ns for 100ns version), ensuring deterministic behavior without bus locking or retry logic.
What package type is used for the 7130SA100JI8?
The 7130SA100JI8 uses a 48-pin ceramic flatpack (FP48) package, as confirmed by the "JI8" suffix in the part number and the mechanical drawing "FP48(4)" in the datasheet. This hermetic package measures approximately 0.75″ × 0.75″ × 0.11″ and complies with MIL-PRF-38535 QML for high-reliability industrial and military applications.
7130SA100JI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- 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:
- 100ns
- Access Time:
- 100 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7130SA100JI8 FAQ
1.How can I place an order for 7130SA100JI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA100JI8 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 7130SA100JI8 reliable?
The price and inventory of 7130SA100JI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA100JI8 is usually 5 days.
3.What payment methods are accepted for 7130SA100JI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA100JI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA100JI8?
7130SA100JI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA100JI8 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 7130SA100JI8?
For technical support, including 7130SA100JI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA100JI8 requirements.
6.How does Aetrix verify that 7130SA100JI8 is sourced from the original manufacturer or authorized distributors?
All 7130SA100JI8 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 7130SA100JI8 meets industry standards.
7.What is the process for return or replacement of 7130SA100JI8?
All 7130SA100JI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA100JI8, 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 7130SA100JI8 part is unused and in its original packaging.
Return procedure for 7130SA100JI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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