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Renesas 7130SA100JI
- Part No.:
- 7130SA100JI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130SA100JI.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,668
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Product details
Overview
7130SA100JI 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, 100 ns maximum read/write cycle time, open-drain BUSY outputs requiring external pull-up resistors, and industrial temperature range (–40°C to +85°C). It enables full-speed, error-free 16-bit-or-wider memory expansion when paired with IDT7140 SLAVE devices in real-time embedded control systems.
For engineers reviewing the 7130SA100JI datasheet, 7130SA100JI pinout, 7130SA100JI application, or 7130SA100JI equivalent, key selection criteria include its MASTER arbitration capability, dual independent asynchronous ports, 5V ±10% single-supply operation, TTL-compatible I/O, and support for port-to-port interrupt signaling via INTL/INTR pins.
Technical Context
The 7130SA100JI implements fully asynchronous dual-port access with separate address, data, and control lines per port (left/right), enabling concurrent reads/writes to distinct memory locations without external logic. Its on-chip arbitration logic resolves contention when both ports access the same address, asserting BUSYL/BUSYR outputs to stall the later-arriving write.
It supports R/W-controlled and CE-controlled write cycles, includes dedicated INTL/INTR flags for inter-port communication, and features automatic power-down via CE/CER assertion-reducing active current to 110 mA (typ.) and standby current to 20 mA (ISB1, TTL-level inputs) at 100 ns speed grade.
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 buses |
| Access Time | 100 ns max - defines minimum read/write cycle time for reliable operation at full speed |
| Supply Voltage | 5.0 V ±10% - single TTL-compatible supply; no auxiliary voltages required |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Power Consumption | Active: 110 mA typ. (ICC); Standby (both CE high): 20 mA typ. (ISB1) - enables low-power system states |
| BUSY Logic | Open-drain BUSYL/BUSYR outputs - require external pull-up resistors; used for hardware arbitration during address contention |
| Interrupt Support | INTL (input) and INTR (output) pins - enable port-to-port event signaling without polling |
Pinout & Package
7130SA100JI is supplied in a 48-pin ceramic flatpack (FP48) package with 0.75" × 0.75" body size and side-brazed leads. Pin assignments are identical across FP48, LC48, and PDG48 variants per datasheet drawing 2689 drw 03F.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Two dedicated ground pins ensure stable return path for dual-port I/O and core logic |
| VCC (Pin 25) | Power supply | Single 5V supply powers both ports and arbitration logic; all VCC pins must be connected |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; deassertion places port in low-power standby (ISB1/ISB2) |
| OEL / OER | Output enable (left/right) | Active-low enables I/O drivers; high-Z state isolates bus during contention or idle |
| R/WL / R/WR | Read/write control (left/right) | High = read, low = write; determines direction of data flow on I/O pins |
| BUSYL / BUSYR | Arbitration flag (open-drain) | Asserted low during address contention to block writes; requires external 4.7kΩ pull-up to VCC |
| INTL / INTR | Interrupt control (input/output) | INTL accepts interrupt request from right port; INTR asserts interrupt to right port on left-port event |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses select one of 1024 memory locations independently per port |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (bidirectional) | 8-bit parallel data path per port; direction controlled by R/W and OE signals |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access to same address without external glue logic; guarantees deterministic BUSY assertion |
| MASTER/SLAVE expandability | Enables seamless 16-bit+ data bus width using IDT7140 SLAVE devices-no timing skew or additional decode logic required |
| Dual independent asynchronous ports | Permits concurrent CPU and DMA access to shared memory with zero wait states under non-contention conditions |
| TTL-compatible I/O levels | Direct interface to 5V microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
| Port-to-port interrupt signaling | Hardware-triggered INTL/INTR flags eliminate software polling overhead in real-time inter-processor communication |
Applications
| Real-Time Motion Control | Digital Signal Processing Buffer |
|---|---|
Use Scenario: Coordinating servo motor position updates between motion controller (left port) and FPGA-based PWM generator (right port) in CNC machines. IC Role / Device Role / Timing Role: MASTER dual-port SRAM acts as synchronized data exchange buffer with hardware arbitration preventing conflicting writes to trajectory tables. Use Value: Eliminates need for handshake protocols or external semaphores-ensures deterministic 100 ns access latency for jitter-sensitive motion profiles. | Use Scenario: Streaming ADC samples from sensor front-end (right port) to DSP core (left port) in radar signal conditioning subsystems. IC Role / Device Role / Timing Role: Dual-port memory serves as ping-pong buffer with independent read/write clocks; BUSY flags prevent overwrites during FFT processing. Use Value: Sustains continuous 100 ns-cycle data throughput without CPU intervention, maximizing DSP utilization and minimizing pipeline stalls. |
| Industrial PLC I/O Mapping | Avionics Data Concentrator |
Use Scenario: Sharing I/O status registers between main PLC CPU (left port) and safety monitor co-processor (right port) in SIL2-certified controllers. IC Role / Device Role / Timing Role: MASTER SRAM provides atomic read-modify-write capability via INTL/INTR handshaking and BUSY-controlled write inhibition. Use Value: Enables lock-free, cycle-accurate synchronization of critical I/O states-meeting deterministic response requirements for fail-safe logic execution. | Use Scenario: Aggregating ARINC 429 receiver outputs (right port) for real-time display rendering (left port) in cockpit display units. IC Role / Device Role / Timing Role: Dual-port SRAM buffers time-stamped avionics messages with hardware arbitration ensuring no message loss during display refresh bursts. Use Value: Guarantees lossless, sub-microsecond latency message transfer between dissimilar bus domains-critical for flight-critical situational awareness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C133-100AXC | 1K × 8, 100 ns, 5V, but lacks on-chip arbitration logic and BUSY output; requires external logic for contention resolution | Suitable only in systems where address contention is prevented by software or external arbitration | Select only if arbitration is handled externally and footprint compatibility with 48-pin SOIC is required |
| IDT7140SA100JI | SLAVE-only variant; no arbitration logic, BUSY inputs instead of outputs, identical timing and pinout except for INTL/INTR polarity reversal | Must be paired with 7130SA100JI in MASTER/SLAVE configuration for 16-bit expansion | Use exclusively as companion SLAVE in systems requiring wider data paths; not standalone-replaceable |
Compared with CY7C133-100AXC and IDT7140SA100JI, the 7130SA100JI uniquely integrates arbitration and interrupt signaling-enabling true hardware-synchronized dual-processor access without external components or timing penalties.
Availability
7130SA100JI is available at Aetrix Electronics and suitable for real-time motion control, digital signal processing buffers, industrial PLC I/O mapping, and avionics data concentrators requiring stable component supply across extended product lifecycles.
Supply support for 7130SA100JI 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 for communications, computing, and industrial markets.
The IDT7130/7140 family was designed specifically for deterministic, low-latency shared-memory architectures in hard real-time embedded systems-emphasizing hardware arbitration, interrupt signaling, and industrial-grade reliability.
FAQ
What is the function of BUSYL and BUSYR on the 7130SA100JI?
BUSYL and BUSYR are open-drain arbitration outputs on the 7130SA100JI. When both ports attempt to access the same memory address, the later-arriving port asserts its BUSY signal low to inhibit the write operation-preventing data corruption. External pull-up resistors (typically 4.7 kΩ to VCC) are required for proper operation. This hardware arbitration eliminates the need for software locks or external logic.
Can the 7130SA100JI operate with a 3.3V supply?
No, the 7130SA100JI requires a 5.0 V ±10% supply (4.5 V to 5.5 V) and is not 3.3V-tolerant. Its input thresholds (VIH = 2.2 V min, VIL = 0.8 V max) and output drive characteristics are specified only for 5V operation. Interfacing with 3.3V systems requires level-shifting circuitry on all I/O, address, and control lines.
How does the 7130SA100JI differ from the IDT7140SA100JI?
The 7130SA100JI is the MASTER device with on-chip arbitration logic and open-drain BUSY outputs, while the IDT7140SA100JI is the SLAVE device with BUSY inputs and no arbitration logic. They share identical timing (100 ns), pinout, and memory organization but differ in BUSY/INT functionality and cannot be substituted directly-the 7130SA100JI must be used as the controlling master in MASTER/SLAVE configurations.
What is the purpose of the INTL and INTR pins on the 7130SA100JI?
INTL is an interrupt input and INTR is an interrupt output on the 7130SA100JI, enabling hardware-triggered inter-port communication. Writing to address 0x3FF on the right port sets the INTR flag, signaling the left port; writing to 0x3FE on the left port clears it. This allows event-driven synchronization-such as notifying a processor that new sensor data is ready-without polling or shared memory contention.
Does the 7130SA100JI support battery backup for data retention?
No, the 7130SA100JI does not support battery backup. Only the LA suffix variants (e.g., 7130LA100JI) provide 2V data retention capability. The SA suffix indicates standard active power consumption (550 mW typ.) and requires continuous 5V supply to maintain memory contents-making it unsuitable for zero-power retention applications.
7130SA100JI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- 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:
- 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)
7130SA100JI FAQ
1.How can I place an order for 7130SA100JI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA100JI 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 7130SA100JI reliable?
The price and inventory of 7130SA100JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA100JI is usually 5 days.
3.What payment methods are accepted for 7130SA100JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA100JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA100JI?
7130SA100JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA100JI 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 7130SA100JI?
For technical support, including 7130SA100JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA100JI requirements.
6.How does Aetrix verify that 7130SA100JI is sourced from the original manufacturer or authorized distributors?
All 7130SA100JI 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 7130SA100JI meets industry standards.
7.What is the process for return or replacement of 7130SA100JI?
All 7130SA100JI units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA100JI, 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 7130SA100JI part is unused and in its original packaging.
Return procedure for 7130SA100JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130SA100JI 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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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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