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Renesas 7130SA55P
- Part No.:
- 7130SA55P
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7130SA55P.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 48DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,280
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Product details
Overview
7130SA55P from IDT is a high-speed 1K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 55 ns max read 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 control systems.
For engineers reviewing the 7130SA55P datasheet, 7130SA55P pinout, 7130SA55P application, or 7130SA55P equivalent, key selection criteria include BUSY output flag timing (tBAA ≤ 30 ns), port-to-port arbitration priority setup (tAPS = 5 ns), dual independent asynchronous access, and compatibility with 48-pin DIP, LCC, or flatpack packages.
Technical Context
The 7130SA55P implements fully asynchronous dual-port operation with separate address, data, and control buses for left (L) and right (R) ports. Its on-chip arbitration logic resolves contention via BUSYL/BUSYR open-drain outputs requiring external pull-up resistors, and supports port-to-port interrupt signaling via INTL/INTR flags.
It features automatic power-down controlled by CEL/CER inputs, delivering 1.0 mA typical full-standby current (ISB3) under CMOS-level inputs and 20 mA typical standby current (ISB1) under TTL-level inputs at 55 ns speed grade - critical for low-power embedded controllers requiring deterministic latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide); supports independent concurrent read/write on two ports without external logic. |
| Access Time | 55 ns max read cycle time (tRC); guarantees deterministic response in real-time motion control and digital signal buffering. |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V); compatible with legacy 5V TTL system rails without level-shifting. |
| Operating Temp | –40°C to +85°C (industrial grade); validated for deployment in factory automation and telecom infrastructure. |
| Standby Current | 20 mA typical (ISB1, TTL-level CE); enables rapid wake-up from low-power states in battery-backed systems. |
| BUSY Timing | tBAA ≤ 30 ns; ensures timely detection of port contention during simultaneous access to same address location. |
| Arbitration Setup | tAPS = 5 ns; defines minimum address stability margin required before BUSY assertion to guarantee deterministic priority resolution. |
Pinout & Package
7130SA55P is packaged in a 48-pin ceramic flatpack (FP48) with 0.75″ × 0.75″ × 0.11″ body dimensions. All VCC pins require connection to 5V supply; all GND pins must be tied to ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | Four dedicated ground pins reduce ground bounce and improve noise immunity in high-speed dual-port operation. |
| VCC (Pins 23, 47) | Power supply | Dual VCC pins ensure stable core voltage delivery across the die; decoupling capacitors required per pin. |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; controls dynamic current draw and initiates arbitration when both asserted. |
| OEL / OER | Output enable (left/right) | Active-low enables I/O drivers; allows high-impedance tri-state during bus sharing or arbitration wait states. |
| R/WL / R/WR | Read/write control (left/right) | Active-high = read, active-low = write; determines direction of data flow on corresponding I/O bus. |
| BUSYL / BUSYR | Arbitration status (open-drain) | Outputs LOW when opposing port writes to same address; requires external pull-up resistor to VCC for valid logic HIGH. |
| INTL / INTR | Interrupt flag (open-drain) | Signals inter-port events (e.g., flag set/reset); enables software-triggered synchronization between CPU and DSP subsystems. |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses decode 1K locations independently; no shared address lines between ports. |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (bidirectional) | Separate 8-bit data paths eliminate bus contention; each port drives/receives data asynchronously. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Eliminates need for external glue logic in MASTER configuration; resolves simultaneous access conflicts deterministically via BUSY signaling. |
| Port-to-port interrupt capability | Enables event-driven communication between processors (e.g., DSP signals completion to host MCU via INTL/INTR). |
| Open-drain BUSY/INT outputs | Allows wired-OR connection of multiple dual-port devices on shared interrupt or busy lines without contention. |
| Asynchronous dual-port operation | Supports independent clock domains - e.g., left port driven by FPGA fabric clock, right port by microcontroller system clock. |
| 55 ns industrial-grade timing | Meets real-time deadlines in motor control loops and packet buffering where sub-100 ns latency is mandatory. |
Applications
| Industrial Motion Control | Digital Signal Processing Buffer |
|---|---|
Use Scenario: Coordinating position feedback from encoder and command updates from PLC in servo drive firmware. IC Role / Device Role / Timing Role: MASTER dual-port SRAM acts as real-time shared memory between motion controller (right port) and safety monitor (left port), synchronized via BUSY arbitration. Use Value: Eliminates handshake overhead; 55 ns tRC enables 18.2 MHz update rate for closed-loop position correction cycles. | Use Scenario: Streaming audio samples between ADC interface and DSP core in telecom baseband processing. IC Role / Device Role / Timing Role: Dual-port buffer decouples sampling clock domain (left port) from algorithm execution clock (right port), using INTL/INTR for frame boundary signaling. Use Value: Prevents FIFO overflow/underflow; tAPS = 5 ns ensures reliable frame sync even at 48 kHz sample rates. |
| Redundant Controller Communication | Test Equipment Data Capture |
Use Scenario: Hot-swappable primary/backup CPU modules exchanging status and configuration data in avionics systems. IC Role / Device Role / Timing Role: 7130SA55P serves as fault-tolerant shared memory with BUSY-controlled write protection during failover transitions. Use Value: Guarantees atomic updates: tBDD ≤ 55 ns ensures valid data after BUSY deassertion, preventing partial writes during switchover. | Use Scenario: High-speed logic analyzer capturing parallel bus traces while simultaneously streaming to host PC via USB bridge. IC Role / Device Role / Timing Role: Left port captures 100 MHz parallel data stream; right port streams buffered data to host interface under DMA control. Use Value: 55 ns tRC supports sustained 18.2 MB/s capture bandwidth; ISB1 = 20 mA enables low-power idle between trigger events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C133-55JC | 55 ns access, 48-pin PLCC, no built-in arbitration logic; requires external logic for BUSY generation. | Lacks integrated port arbitration; suitable only when external CPLD/FPGA handles contention resolution. | Select if board layout already includes arbitration logic and PLCC footprint is fixed. |
| IDT7142S55PF | Same 55 ns speed, but SLAVE-only configuration; no BUSY output or arbitration logic; designed exclusively for pairing with 7130 MASTER. | Cannot operate standalone; only usable in MASTER/SLAVE pairs for >8-bit word width expansion. | Select only when expanding to 16-bit+ data bus with second 7130SA55P as MASTER. |
Compared with CY7C133-55JC and IDT7142S55PF, the 7130SA55P uniquely integrates arbitration logic and BUSY signaling in a single MASTER device - reducing BOM count and PCB area versus discrete solutions, while enabling direct replacement of legacy 7130-series designs without redesign.
Availability
7130SA55P is available at Aetrix Electronics and suitable for industrial motion control, digital signal processing buffers, redundant controller communication, and test equipment data capture requiring stable component supply across extended product lifecycles.
Supply support for 7130SA55P 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 signal processing ICs, now part of Renesas Electronics.
The IDT7130 family was engineered specifically for deterministic, low-latency shared-memory architectures in real-time embedded systems - emphasizing on-chip arbitration, dual asynchronous access, and industrial-grade reliability.
FAQ
What is the maximum operating temperature range for the 7130SA55P?
The 7130SA55P is rated for industrial temperature operation from –40°C to +85°C. This specification is validated across all electrical parameters including 55 ns access time, BUSY timing (tBAA ≤ 30 ns), and standby current (ISB1 = 20 mA typ), making it suitable for factory-floor and outdoor telecom equipment deployments where ambient thermal stress is significant.
Does the 7130SA55P require external pull-up resistors on BUSY and INT pins?
Yes, the 7130SA55P features open-drain BUSYL, BUSYR, INTL, and INTR outputs. External pull-up resistors to VCC are mandatory to establish valid logic HIGH states. The datasheet specifies 1250 Ω for BUSY/INT loads with 100 pF capacitance in 55 ns versions - ensuring rise times compatible with tHZ ≤ 25 ns and reliable arbitration signaling.
Can the 7130SA55P operate as a standalone 8-bit memory without a SLAVE device?
Yes, the 7130SA55P functions as a complete standalone 1K × 8 dual-port SRAM. Its MASTER designation indicates capability to coordinate with IDT7140 SLAVE devices for wider data buses, but it requires no companion chip for basic dual-port operation. All arbitration, interrupt, and memory control logic resides on-die - confirmed by functional block diagram and truth tables in the official datasheet.
What package type is used for the 7130SA55P?
7130SA55P uses a 48-pin ceramic flatpack (FP48) package measuring approximately 0.75″ × 0.75″ × 0.11″. Pin configuration matches the FP48 diagram in the datasheet (drawing 2689 drw 03F), with GND on pins 1/24/25/48 and VCC on pins 23/47. This hermetic package provides superior thermal stability and moisture resistance for industrial environments.
How does the 7130SA55P handle simultaneous access to the same memory address from both ports?
When both ports attempt access to the same address, the 7130SA55P uses on-chip arbitration logic to assert BUSYL or BUSYR LOW (requiring pull-up), blocking writes on the losing port. The winning port proceeds; tAPS = 5 ns defines minimum address stability before arbitration, and tBDD ≤ 55 ns guarantees valid data after BUSY deassertion - ensuring deterministic, glitch-free resolution without external intervention.
7130SA55P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-DIP (0.600", 15.24mm)
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 48-PDIP
7130SA55P FAQ
1.How can I place an order for 7130SA55P through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA55P 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 7130SA55P reliable?
The price and inventory of 7130SA55P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA55P is usually 5 days.
3.What payment methods are accepted for 7130SA55P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA55P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA55P?
7130SA55P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA55P 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 7130SA55P?
For technical support, including 7130SA55P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA55P requirements.
6.How does Aetrix verify that 7130SA55P is sourced from the original manufacturer or authorized distributors?
All 7130SA55P 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 7130SA55P meets industry standards.
7.What is the process for return or replacement of 7130SA55P?
All 7130SA55P units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA55P, 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 7130SA55P part is unused and in its original packaging.
Return procedure for 7130SA55P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130SA55P Tags
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