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Renesas 7130SA100J8
- Part No.:
- 7130SA100J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130SA100J8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,675
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Product details
Overview
7130SA100J8 from IDT is a high-speed 1K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 100ns max read/write cycle time, TTL-compatible 5V ±10% supply, 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 7130SA100J8 datasheet, 7130SA100J8 pinout, 7130SA100J8 application, or 7130SA100J8 equivalent, this page delivers verified timing parameters, BUSY/INT arbitration behavior, dual-port power-down modes, and package-specific DC/AC electrical characteristics - all confirmed for the SA-grade 100ns speed bin in ceramic flatpack (FP48) packaging.
Technical Context
The 7130SA100J8 implements fully asynchronous dual-port access with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves port contention via BUSY flag assertion, with tBDD ≤ 65ns (max) ensuring valid data after BUSY deassertion.
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 only from a single 5V supply and enters low-power standby (ISB1 ≤ 20mA) when both chip enables are high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 bits (1024 words × 8-bit wide), dual-port architecture with independent left/right access paths |
| Max Read Cycle Time | 100ns - defines minimum interval between successive reads on same port without bus contention |
| Active Current (ICC) | 110mA typ. - power draw during concurrent dual-port operation at fMAX, critical for thermal budgeting |
| Standby Current (ISB1) | 20mA max. - current consumed when both ports disabled (CEL = CER = VIH), enabling low-idle power designs |
| Supply Voltage | 4.5V–5.5V - TTL-compatible single-supply operation; no separate VDDQ or bias rails required |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including motor drives and PLCs |
| Package | 48-pin Ceramic Flatpack (FP48) - hermetic, leaded, 0.75″ × 0.75″ × 0.11″ body, RoHS-compliant |
Pinout & Package
48-pin Ceramic Flatpack (FP48) with 0.75″ × 0.75″ footprint and 0.11″ height. Pin 1 index corner marked; pins arranged in two parallel rows of 24.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | All four GND pins must be connected to system ground plane for noise immunity and stable DC operation |
| VCC (Pins 23, 47) | Power supply | Both VCC pins require local 0.1µF ceramic decoupling to minimize switching noise on 5V rail |
| BUSYL / BUSYR | Open-drain arbitration flag | Require external 4.7kΩ pull-up to VCC; assert LOW to block writes during port contention |
| INTL / INTR | Interrupt output | Push-pull active-low flags signaling inter-port events (e.g., address match at 3FFh/3FEh) |
| A0L–A9L / A0R–A9R | Address inputs | Two independent 10-bit address buses - no shared address lines between ports |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional data | Separate 8-bit data buses per port; high-impedance when OE = VIH or CE = VIH |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access to same memory location without external logic - eliminates need for discrete priority encoders |
| Master/slave expandability | Enables seamless 16-bit+ data bus width using IDT7140 SLAVE; no glue logic or timing skew compensation required |
| Open-drain BUSY outputs | Allows wired-OR connection of multiple 7130 devices for multi-master arbitration in distributed memory systems |
| Port-to-port interrupt signaling | INTL/INTR flags support deterministic inter-processor communication in dual-CPU architectures (e.g., host + DSP) |
| TTL-compatible interface | Direct connection to legacy 5V microcontrollers and FPGAs without level-shifting circuitry |
Applications
| Real-Time Motion Control | Dual-CPU Communication Buffer |
|---|---|
Use Scenario: Coordinating servo drive commands and feedback in CNC machines with separate motion controller and safety monitor CPUs. IC Role / Device Role / Timing Role: MASTER 7130SA100J8 acts as shared memory hub - left port serves motion CPU, right port serves safety CPU, with BUSY arbitration preventing conflicting writes. Use Value: 100ns cycle time ensures sub-millisecond command handoff; open-drain BUSY allows daisy-chained arbitration across multiple axes. | Use Scenario: Exchanging sensor fusion data between ARM host processor and dedicated DSP in industrial vision systems. IC Role / Device Role / Timing Role: Dual-port SRAM buffers timestamped image metadata and processed results - INTL/INTR flags signal data readiness without polling overhead. Use Value: Asynchronous access eliminates bus locking; tINS ≤ 60ns interrupt set time guarantees deterministic response to frame completion events. |
| Redundant PLC Memory Module | High-Speed Data Acquisition Buffer |
Use Scenario: Maintaining synchronized program state between primary and backup PLC processors in safety-critical infrastructure. IC Role / Device Role / Timing Role: 7130SA100J8 stores ladder logic variables - left port updated by primary CPU, right port read by backup CPU for hot-switchover validation. Use Value: Industrial temp rating (–40°C to +85°C) ensures reliability in unconditioned control cabinets; ISB1 ≤ 20mA minimizes standby power in fail-safe monitoring mode. | Use Scenario: Capturing burst-mode analog samples from 100ksps ADCs in test equipment before DMA transfer to host memory. IC Role / Device Role / Timing Role: Acts as ping-pong buffer - one port accepts streaming samples while other port services host reads, with BUSY preventing overwrites. Use Value: 100ns tRC enables sustained 10MByte/s throughput; ceramic FP48 package withstands vibration in portable instrumentation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C131-100AXC | 1K × 8, 100ns, 5V, but lacks on-chip arbitration logic and BUSY/INT flags | Requires external logic for port contention resolution; unsuitable for MASTER/SLAVE expansion | Select only if arbitration handled externally and lower cost outweighs added design complexity |
| IDT7140SA100J8 | SLAVE-only variant - identical timing and pinout but no arbitration logic; BUSY pins are inputs only | Cannot operate standalone; must pair with 7130 as MASTER; used only for data bus width expansion | Choose when building 16-bit+ memory systems where 7130SA100J8 serves as MASTER controller |
Compared with CY7C131-100AXC, the 7130SA100J8 integrates arbitration and interrupt functions that eliminate external logic, reducing BOM count and PCB area. Against IDT7140SA100J8, it provides autonomous MASTER capability - essential for systems requiring standalone dual-port operation or initiating SLAVE expansion.
Availability
7130SA100J8 is available at Aetrix Electronics and suitable for real-time motion control, dual-CPU communication buffers, redundant PLC modules, and high-speed data acquisition systems requiring stable component supply across extended product lifecycles.
Supply support for 7130SA100J8 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 semiconductor company specializing in timing, memory interface, RF, and sensor solutions, now part of Renesas Electronics.
The IDT7130/7140 family was designed specifically for deterministic dual-processor systems requiring zero-wait-state shared memory with hardware-enforced arbitration - targeting industrial automation, avionics, and test equipment.
FAQ
What is the maximum operating frequency supported by the 7130SA100J8?
The 7130SA100J8 is characterized for a maximum read cycle time (tRC) of 100ns, corresponding to an effective maximum operating frequency of 10MHz for consecutive read operations on a single port. Its fully asynchronous architecture means no clock input is required - timing is governed solely by setup/hold and access specifications across address, CE, and OE signals.
Does the 7130SA100J8 require external pull-up resistors on BUSY pins?
Yes, the 7130SA100J8 BUSYL and BUSYR pins are open-drain outputs and require external pull-up resistors to VCC. A 4.7kΩ resistor is recommended per the datasheet to ensure proper logic HIGH level (≥2.4V) while limiting sink current to ≤16mA during assertion. Failure to install pull-ups will prevent BUSY signaling and cause undetected port contention.
Can the 7130SA100J8 operate with a 3.3V supply?
No, the 7130SA100J8 is specified exclusively for 5V ±10% operation (4.5V–5.5V). Its input thresholds (VIH ≥ 2.2V, VIL ≤ 0.8V) and internal circuitry are optimized for TTL-level signaling. Applying 3.3V will result in undefined behavior, failed arbitration, and potential data corruption - use IDT71V256 or similar 3.3V dual-port SRAMs instead.
How does the 7130SA100J8 handle simultaneous access to the same memory address from both ports?
When both ports attempt access to the same address, the 7130SA100J8 uses on-chip arbitration logic to grant priority based on signal timing alignment. The port whose address and enable signals stabilize first wins; the losing port asserts its BUSY output (BUSYL or BUSYR) LOW, blocking writes until BUSY returns HIGH. This prevents data corruption without software intervention.
Is the 7130SA100J8 pin-compatible with the IDT7140SA100J8?
Yes, the 7130SA100J8 and IDT7140SA100J8 share identical FP48 pinouts and AC/DC specifications for the 100ns speed grade. However, functional differences exist: 7130SA100J8 has BUSY outputs and arbitration logic (MASTER), while 7140SA100J8 has BUSY inputs only (SLAVE). They are not drop-in replacements but are designed for interoperable MASTER/SLAVE pairing.
7130SA100J8 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7130SA100J8 FAQ
1.How can I place an order for 7130SA100J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA100J8 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 7130SA100J8 reliable?
The price and inventory of 7130SA100J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA100J8 is usually 5 days.
3.What payment methods are accepted for 7130SA100J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA100J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA100J8?
7130SA100J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA100J8 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 7130SA100J8?
For technical support, including 7130SA100J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA100J8 requirements.
6.How does Aetrix verify that 7130SA100J8 is sourced from the original manufacturer or authorized distributors?
All 7130SA100J8 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 7130SA100J8 meets industry standards.
7.What is the process for return or replacement of 7130SA100J8?
All 7130SA100J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA100J8, 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 7130SA100J8 part is unused and in its original packaging.
Return procedure for 7130SA100J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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