My Inquiry
My Account
Renesas 7130SA55J8/2594
- Part No.:
- 7130SA55J8/2594
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130SA55J8/2594.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,908
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7130SA55J8/2594 from IDT is a high-speed 1K × 8 dual-port static RAM with master arbitration logic, 55 ns max read cycle time, TTL-compatible 5V ±10% operation, and industrial temperature range (–40°C to +85°C). It enables concurrent asynchronous access from left/right ports in real-time inter-processor communication systems.
For engineers reviewing the 7130SA55J8/2594 datasheet, 7130SA55J8/2594 pinout, 7130SA55J8/2594 application, or 7130SA55J8/2594 equivalent, key selection criteria include BUSY-flag arbitration timing (tBDD ≤ 55 ns), dual-port standby current (ISB1 = 20 mA typ.), and open-drain BUSY output requiring external pull-up.
Technical Context
The 7130SA55J8/2594 implements on-chip port arbitration logic to resolve simultaneous access contention between left and right ports using address-match detection and priority setup time (tAPS = 5 ns). Its BUSY outputs (BUSYL/BUSYR) are open-drain and require external pull-up resistors per datasheet Note 1.
It supports fully asynchronous dual-port operation: reads and writes may occur independently on either port without synchronization. The device uses CMOS technology for low active power (ICC = 110 mA typ.) and features TTL-level inputs/outputs compatible with standard 5V logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit data width per port) |
| Access Time | 55 ns max - defines minimum read cycle time (tRC) for timing-critical real-time systems |
| Supply Voltage | 5.0 V ±10% - requires single-rail 4.5–5.5 V supply; no separate I/O or core voltage rails |
| Operating Temp | –40°C to +85°C - qualified for industrial environments without derating |
| Standby Current | 20 mA typ. (ISB1) - determines power budget during idle dual-port states |
| BUSY Timing | tBDD ≤ 55 ns - maximum delay from BUSY deassertion to valid read data, critical for port-to-port handshaking |
| Arbitration Setup | tAPS = 5 ns - minimum time required between address stabilization on both ports before arbitration decision |
Pinout & Package
7130SA55J8/2594 is packaged in a 48-pin ceramic flatpack (FP48), measuring approximately 0.75 in × 0.75 in × 0.11 in, with side-braze construction suitable for high-reliability applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A9L | Left port address inputs | 10-bit address bus for left-side memory access; latched on CE or R/W transition |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit tri-state I/O lines; direction controlled by R/WL and OEL |
| CEL, OEL, R/WL | Left port control | Chip enable, output enable, and read/write select - fully asynchronous with no clock required |
| BUSYL, INTL | Left port status flags | BUSYL is open-drain arbitration flag; INTL is push-pull interrupt output |
| A0R–A9R | Right port address inputs | Independent 10-bit address bus; no shared address lines between ports |
| I/O0R–I/O7R | Right port bidirectional data | Electrically isolated 8-bit data path; no contention with left port I/O |
| CER, OER, R/WR | Right port control | Functionally identical to left controls but operate independently |
| BUSYR, INTR | Right port status flags | BUSYR open-drain; INTR push-pull - enables cross-port interrupt signaling |
| VCC, GND | Power terminals | All VCC pins must be connected to 5V supply; all GND pins tied to common ground plane |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous left/right port access without external logic; eliminates need for discrete priority encoders |
| Open-drain BUSY outputs | Enable wired-OR arbitration across multiple dual-port RAMs in multi-master systems |
| Port-to-port interrupt signaling | INTL/INTR flags allow one port to signal event completion or request service from the other port |
| Asynchronous dual-port operation | Each port operates independently - no clock, no synchronization overhead, deterministic latency |
| TTL-compatible interface | Direct connection to legacy 5V microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
Applications
| Real-Time Inter-Processor Communication | Digital Signal Processing Buffering |
|---|---|
Use Scenario: Two independent processors exchange sensor data and control commands via shared memory without software polling or OS intervention. IC Role / Device Role / Timing Role: 7130SA55J8/2594 acts as a hardware-synchronized mailbox with BUSY-flag arbitration ensuring atomic read-modify-write cycles. Use Value: Eliminates race conditions during concurrent access; tBDD ≤ 55 ns guarantees sub-60 ns response for time-critical feedback loops. | Use Scenario: A DSP writes processed audio samples to memory while a host CPU reads them for network streaming or storage. IC Role / Device Role / Timing Role: 7130SA55J8/2594 provides zero-wait-state dual-port buffering with independent 55 ns access on each side. Use Value: Sustains full throughput of 18.2 MB/s per port (1/55 ns × 8 bits), preventing pipeline stalls in real-time audio pipelines. |
| Industrial PLC Data Exchange | Military Avionics Sensor Fusion |
Use Scenario: Programmable logic controller modules share I/O state tables and configuration parameters across redundant control units. IC Role / Device Role / Timing Role: 7130SA55J8/2594 serves as fault-tolerant shared memory with built-in arbitration preventing conflicting writes during failover. Use Value: ISB1 = 20 mA typ. enables low-power standby during watchdog monitoring; industrial temp rating ensures reliability in cabinet environments. | Use Scenario: Radar and inertial measurement unit (IMU) data streams are fused in real time by two synchronized flight computers. IC Role / Device Role / Timing Role: 7130SA55J8/2594 functions as a radiation-tolerant, high-reliability dual-port buffer with ceramic FP48 package. Use Value: Open-drain BUSY outputs support MIL-STD-1553 bus-style wired-OR arbitration; –40°C to +85°C operation meets DO-160 environmental requirements. |
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, 1K × 8, but lacks on-chip arbitration logic and BUSY flag outputs | Requires external logic for port contention resolution; not drop-in for master arbitration use cases | Select only if arbitration handled in FPGA or processor firmware |
| IDT7140SA55J8 | Same speed and package, but slave-only device: BUSY inputs only, no arbitration logic or BUSY outputs | Must be paired with IDT7130 as master; cannot operate stand-alone in arbitration-critical roles | Use only in MASTER/SLAVE 16-bit expansion configurations where 7130SA55J8/2594 is the master |
Compared with CY7C133-55JC and IDT7140SA55J8, the 7130SA55J8/2594 uniquely integrates arbitration logic and open-drain BUSY outputs - enabling autonomous, hardware-resolved contention handling essential for deterministic real-time systems without added logic complexity.
Availability
7130SA55J8/2594 is available at Aetrix Electronics and suitable for real-time inter-processor communication, digital signal processing buffering, and industrial PLC data exchange requiring stable component supply across extended production lifecycles.
Supply support for 7130SA55J8/2594 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 family was designed specifically for deterministic, low-latency dual-port memory applications in real-time embedded systems where hardware arbitration and port-to-port signaling eliminate software overhead.
FAQ
What is the maximum operating temperature range for the 7130SA55J8/2594?
The 7130SA55J8/2594 is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the "Recommended Operating Temperature and Supply Voltage" table (2689 tbl 03), where the "Industrial" grade explicitly lists this range. It does not support military-grade –55°C to +125°C operation.
Does the 7130SA55J8/2594 include on-chip arbitration logic?
Yes, the 7130SA55J8/2594 includes dedicated on-chip arbitration logic, distinguishing it from slave-only variants like IDT7140. As stated in the Features section, "On-chip port arbitration logic (IDT7130 Only)" and "BUSY output flag on IDT7130; BUSY input on IDT7140" confirm this capability is inherent to the 7130SA55J8/2594.
What is the function of the BUSYL and BUSYR pins on the 7130SA55J8/2594?
BUSYL and BUSYR are open-drain arbitration status outputs on the 7130SA55J8/2594. When asserted low, they indicate that the corresponding port's write access is blocked due to contention. Per datasheet Note 1, these outputs require external pull-up resistors and are used to coordinate access between left and right ports without external logic.
Can the 7130SA55J8/2594 operate from a 3.3V supply?
No, the 7130SA55J8/2594 requires a 5.0 V ±10% supply (4.5 V to 5.5 V), as specified in "Recommended DC Operating Conditions" (2689 tbl 02). Its inputs and outputs are TTL-compatible, not LVTTL or LVCMOS, and operation outside the 4.5–5.5 V range violates absolute maximum ratings and may cause functional failure.
What package type is used for the 7130SA55J8/2594?
The 7130SA55J8/2594 uses a 48-pin ceramic flatpack (FP48), as identified in the Pin Configurations section (2689 drw 03F) and confirmed by package dimensions: "FP48 package body is approximately .75 in x .75 in x .11 in." This hermetic package supports high-reliability industrial and aerospace applications.
7130SA55J8/2594 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:
- 55ns
- Access Time:
- 55 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)
7130SA55J8/2594 FAQ
1.How can I place an order for 7130SA55J8/2594 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA55J8/2594 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 7130SA55J8/2594 reliable?
The price and inventory of 7130SA55J8/2594 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA55J8/2594 is usually 5 days.
3.What payment methods are accepted for 7130SA55J8/2594?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA55J8/2594 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA55J8/2594?
7130SA55J8/2594 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA55J8/2594 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 7130SA55J8/2594?
For technical support, including 7130SA55J8/2594 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA55J8/2594 requirements.
6.How does Aetrix verify that 7130SA55J8/2594 is sourced from the original manufacturer or authorized distributors?
All 7130SA55J8/2594 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 7130SA55J8/2594 meets industry standards.
7.What is the process for return or replacement of 7130SA55J8/2594?
All 7130SA55J8/2594 units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA55J8/2594, 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 7130SA55J8/2594 part is unused and in its original packaging.
Return procedure for 7130SA55J8/2594:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130SA55J8/2594 Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
