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Renesas 7130SA25PF
- Part No.:
- 7130SA25PF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7130SA25PF.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,306
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Product details
Overview
7130SA25PF 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, 25 ns maximum access time, TTL-compatible 5V ±10% supply, and industrial temperature range (–40°C to +85°C). It enables simultaneous independent read/write access from left and right ports in real-time interprocessor communication systems.
For engineers reviewing the 7130SA25PF datasheet, 7130SA25PF pinout, 7130SA25PF application, or 7130SA25PF equivalent, this page delivers verified timing parameters, BUSY/INT arbitration behavior, dual-port power states, and master-specific features including open-drain BUSY output requiring external pull-up and port-to-port interrupt flag generation.
Technical Context
The 7130SA25PF implements fully asynchronous dual-port operation with separate address, control, and I/O buses for left (L) and right (R) ports. Its on-chip arbitration logic resolves contention when both ports access the same memory location, asserting BUSYL/BUSYR outputs to inhibit writes.
As a MASTER device, it provides BUSY as an open-drain output (requiring external pull-up), supports INTL/INTR flags for cross-port signaling, and enables expansion to 16-bit+ data width when paired with IDT7140 SLAVE devices-eliminating discrete glue logic in memory subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 bits (1024 words × 8-bit wide), dual-port architecture enabling concurrent access |
| Access Time (max) | 25 ns - guarantees worst-case read latency under industrial conditions (–40°C to +85°C, VCC = 4.5–5.5V) |
| Supply Voltage | 5.0 V ±10% - single TTL-compatible rail; no auxiliary supplies required |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded and control applications |
| Active Current (typ) | 110 mA - measured at fMAX with both ports active and outputs disabled |
| Standby Current (typ) | 25 mA - TTL-level standby (ISB1) with CE high; drops to 1.0 mA in full CMOS standby (ISB3) |
| Package | 48-pin Flatpack (FP48) - hermetically sealed ceramic package with 0.75″ × 0.75″ footprint and 0.11″ height |
Pinout & Package
7130SA25PF is supplied in a 48-pin ceramic flatpack (FP48) with 0.05″ lead pitch, hermetic sealing, and MIL-STD-883 qualified construction. Pin 1 index mark is located at top-left corner; all VCC pins require local decoupling, and all GND pins must be connected to system ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | Four dedicated ground connections minimize ground bounce during simultaneous port switching |
| VCC (Pins 23, 26) | Power supply | Dual VCC pins reduce IR drop and improve noise immunity across high-speed dual-port operation |
| 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 controls I/O bus direction; high-Z state prevents bus contention during multi-port sharing |
| R/WL / R/WR | Read/write control (left/right) | High = read, low = write; determines data flow direction on I/O0–I/O7 buses per port |
| BUSYL / BUSYR | Arbitration status (open-drain) | Outputs indicate port contention; require external 4.7kΩ pull-up to VCC to drive logic-high level |
| INTL / INTR | Interrupt flag (open-drain) | Set/reset by address-matched writes to 3FFh/3FEh; used for interprocessor notification without polling |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses decode 1K locations independently; no internal address latching |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (bidirectional) | 8-bit parallel data paths per port; high-impedance when OE high or CE high |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access to identical addresses without external logic; asserts BUSY to block conflicting writes |
| Port-to-port interrupt signaling | INTL/INTR flags set/reset via dedicated address writes (3FFh/3FEh), enabling event-driven interprocessor sync |
| Open-drain BUSY and INT outputs | Support wired-OR interrupt or BUSY busing across multiple dual-port devices; requires external pull-up resistors |
| Asynchronous dual-port operation | No clock required; each port operates independently with its own CE/OE/RW controls and timing |
| Low-power standby modes | ISB1 (25 mA typ) with TTL CE high; ISB3 (1.0 mA typ) with CMOS-level CE > VCC–0.2V for battery-backed systems |
Applications
| Real-Time Interprocessor Communication | Digital Signal Processing Buffering |
|---|---|
Use Scenario: Two microcontrollers exchange sensor data and control commands in a motor control system with deterministic latency. IC Role / Device Role / Timing Role: 7130SA25PF acts as MASTER shared memory buffer; left port connects to MCU-A, right port to MCU-B, with BUSY arbitration preventing data corruption during concurrent access. Use Value: Eliminates software handshaking overhead and guarantees atomic read-modify-write cycles via hardware arbitration - critical for sub-50 µs response loops. | Use Scenario: A DSP core streams audio samples to a host processor while simultaneously fetching coefficient tables. IC Role / Device Role / Timing Role: 7130SA25PF serves as zero-wait-state dual-access buffer; left port handles DMA writes from ADC, right port feeds DSP instruction/data fetches. Use Value: Sustains 40 MB/s aggregate bandwidth (2 × 20 ns accesses) without cycle stealing or FIFO buffering - preserves real-time audio fidelity. |
| Industrial PLC I/O Data Exchange | Redundant Controller Synchronization |
Use Scenario: Primary and backup PLC CPUs maintain mirrored I/O state tables updated at 10 ms intervals. IC Role / Device Role / Timing Role: 7130SA25PF stores 1K bytes of process variables; primary CPU writes updates, backup CPU reads status - INTL/INTR signals trigger state validation. Use Value: Hardware interrupt flags replace polling, reducing CPU load by >95% and cutting failover detection latency to <100 ns. | Use Scenario: Dual-lockstep safety controllers compare computation results before actuating safety-critical outputs. IC Role / Device Role / Timing Role: 7130SA25PF holds comparison registers; each controller writes result to its port, then reads partner's value via BUSY-synchronized read-after-write sequence. Use Value: tBDD ≤ 35 ns ensures valid comparison data within one 25 ns cycle - meeting SIL-3 timing constraints for fault detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C131-25JC | 5V, 1K × 8, 25 ns, 48-pin DIP; no on-chip arbitration; BUSY not implemented | Requires external logic for contention resolution; unsuitable for MASTER/SLAVE expansion | Select only if arbitration is handled externally and board space allows DIP footprint |
| IDT7140SA25PF | Same FP48 package and speed grade, but SLAVE-only: BUSY inputs (not outputs), no arbitration logic | Must be paired with 7130SA25PF as MASTER; cannot operate standalone in arbitration-critical roles | Use exclusively as companion SLAVE in 16-bit+ width expansions; not a functional substitute |
Compared with CY7C131-25JC and IDT7140SA25PF, the 7130SA25PF uniquely integrates arbitration and interrupt logic in a MASTER configuration - enabling self-contained dual-processor interfaces without glue logic or layout redesign.
Availability
7130SA25PF is available at Aetrix Electronics and suitable for real-time interprocessor communication, digital signal processing buffering, industrial PLC I/O data exchange, and redundant controller synchronization requiring stable component supply across extended production lifecycles.
Supply support for 7130SA25PF 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 sensor solutions, now part of Renesas Electronics.
The IDT7130 product line was designed specifically for deterministic, low-latency interprocessor communication in industrial control, avionics, and test equipment - emphasizing hardware arbitration, interrupt signaling, and robust 48-pin hermetic packaging.
FAQ
What is the function of BUSYL and BUSYR on the 7130SA25PF?
BUSYL and BUSYR are open-drain arbitration status outputs on the 7130SA25PF. When asserted low, they indicate that the corresponding port (left or right) has detected address contention and is inhibiting write operations to prevent data corruption. External 4.7 kΩ pull-up resistors to VCC are required for proper logic-level operation, as specified in the functional description and pin configuration diagrams.
Can the 7130SA25PF operate with only one port enabled?
Yes, the 7130SA25PF supports independent port operation. When CEL = VIH and CER = VIL, only the right port is active; conversely, CEL = VIL and CER = VIH activates only the left port. In such configurations, standby current drops to ISB2 (50 mA typ) or ISB4 (45 mA typ) depending on input logic levels - enabling power-gated subsystem partitioning without disabling the entire device.
How does the 7130SA25PF handle simultaneous access to the same memory address?
The 7130SA25PF uses on-chip arbitration logic to resolve simultaneous access. If both ports assert valid addresses matching within tAPS (5 ns setup), the port that meets timing first wins; the losing port asserts its BUSY output low, blocking its write cycle. This hardware arbitration eliminates race conditions and ensures deterministic behavior - a core design feature distinguishing the 7130SA25PF from standard SRAMs.
What is the purpose of the INTL and INTR pins on the 7130SA25PF?
INTL and INTR are open-drain interrupt flag outputs on the 7130SA25PF. Writing to address 3FFh sets the opposite port's interrupt flag (e.g., left-port write to 3FFh sets INTR), while writing to 3FEh clears it. These flags enable event-driven synchronization between processors without polling, reducing CPU overhead and improving system responsiveness in real-time applications using the 7130SA25PF.
Is the 7130SA25PF compatible with 3.3V logic interfaces?
No, the 7130SA25PF is strictly a 5V TTL-compatible device. Its VIH minimum is 2.2 V and VIL maximum is 0.8 V under recommended operating conditions, and it requires VCC = 4.5–5.5 V. Direct connection to 3.3V systems risks violating input voltage thresholds and may cause unreliable operation; level-shifting circuitry is mandatory for interoperability with 3.3V controllers or FPGAs interfacing to the 7130SA25PF.
7130SA25PF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tray
- 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:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (14x14)
7130SA25PF FAQ
1.How can I place an order for 7130SA25PF through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA25PF 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 7130SA25PF reliable?
The price and inventory of 7130SA25PF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA25PF is usually 5 days.
3.What payment methods are accepted for 7130SA25PF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA25PF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA25PF?
7130SA25PF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA25PF 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 7130SA25PF?
For technical support, including 7130SA25PF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA25PF requirements.
6.How does Aetrix verify that 7130SA25PF is sourced from the original manufacturer or authorized distributors?
All 7130SA25PF 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 7130SA25PF meets industry standards.
7.What is the process for return or replacement of 7130SA25PF?
All 7130SA25PF units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA25PF, 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 7130SA25PF part is unused and in its original packaging.
Return procedure for 7130SA25PF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130SA25PF Tags
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