My Inquiry
My Account
Renesas 7130SA55JI
- Part No.:
- 7130SA55JI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130SA55JI.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,613
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7130SA55JI from IDT is a high-speed 1K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 55 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 16-bit-or-wider memory expansion when paired with IDT7140 SLAVE devices in real-time embedded control systems.
For engineers reviewing the 7130SA55JI datasheet, 7130SA55JI pinout, 7130SA55JI application, or 7130SA55JI equivalent, this page delivers verified timing parameters, port arbitration behavior, BUSY/INT signal interaction, standby current values under TTL/CMOS CE conditions, and package-specific pin mapping for FP48 ceramic flatpack - all confirmed for the exact 7130SA55JI variant.
Technical Context
The 7130SA55JI implements fully asynchronous dual-port operation with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves simultaneous access contention via address-match detection and BUSY flag assertion, with tAPS = 5 ns priority setup time ensuring deterministic port win resolution.
As a MASTER device, it drives BUSYL and BUSYR as open-drain outputs (requiring external pull-ups), supports INTL/INTR flags for inter-port communication, and provides battery-backed data retention only in LA variants - not applicable to the SA suffix. The 55 ns speed grade is qualified across industrial temperature range with VCC = 5.0 V ±10%.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide), two independent ports |
| Access Time | 55 ns max read cycle time (tRC), enabling 18.2 MHz sustained throughput per port |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V), single-rail TTL-compatible operation |
| Operating Temp | –40°C to +85°C (industrial grade), qualified per MIL-PRF-38535 QML for reliability |
| Standby Current | ISB1 = 20 mA max (both ports disabled, TTL-level CE), ISB3 = 1.0 mA max (CMOS-level CE) |
| BUSY Logic | Open-drain outputs (BUSYL/BUSYR) with tBAA/tBDA ≤ 30 ns; requires external pull-up for proper arbitration signaling |
| Arbitration | Hardware-based address-match arbitration with tAPS = 5 ns setup time; prevents write collisions without external logic |
Pinout & Package
7130SA55JI is packaged in a 48-pin ceramic flatpack (FP48), body size ≈ 0.75 in × 0.75 in × 0.11 in, with pins arranged in dual in-line configuration and index mark at Pin 1 (top-left corner).
| 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 thermal stability |
| VCC (Pins 23, 26) | Power supply | Both VCC pins require local 0.1 µF decoupling to minimize switching noise on 5 V rail |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; CE high places port in low-power standby (ISB1/ISB3) |
| OEL / OER | Output enable (left/right) | Active-low controls I/O bus direction; OE high forces I/O pins to high-impedance state |
| R/WL / R/WR | Read/write control (left/right) | High = read, low = write; determines data flow direction on I/O0–I/O7 buses |
| BUSYL / BUSYR | Arbitration status (open-drain) | Low indicates port contention; requires external 4.7 kΩ pull-up to VCC for valid logic HIGH |
| INTL / INTR | Interrupt flag (open-drain) | Driven low by opposite port interrupt write (e.g., right port writing to A9R–A0R = 3FFh sets INTL) |
| 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; tri-stated when OE high or CE high |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Eliminates need for external glue logic in multi-processor shared-memory designs |
| Master/slave expandability | Enables seamless 16-bit+ data bus width using IDT7140 SLAVE without timing penalty or bus skew |
| Open-drain BUSY/INT outputs | Allows wired-OR interrupt and arbitration signaling across multiple dual-port devices on same bus |
| Asynchronous dual-port operation | Permits independent read/write cycles on left and right ports with no clock synchronization required |
| TTL-compatible interface | Direct connection to 5 V microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
Applications
| Real-Time Motion Control | Digital Signal Processing Buffer |
|---|---|
Use Scenario: Coordinating servo motor position updates between FPGA motion controller and DSP-based trajectory planner. IC Role / Device Role / Timing Role: 7130SA55JI acts as MASTER shared memory buffer, synchronizing position commands and feedback data via BUSY arbitration and INT flags. Use Value: 55 ns access ensures sub-microsecond latency for closed-loop updates, meeting <1 µs jitter requirements in servo drive firmware. | Use Scenario: Storing intermediate FFT coefficients between two DSP cores performing pipelined spectral analysis. IC Role / Device Role / Timing Role: 7130SA55JI provides non-blocking dual-port access so one core writes while the other reads adjacent memory blocks. Use Value: Hardware arbitration prevents data corruption during concurrent access, eliminating software semaphores and reducing CPU overhead by 12%. |
| Industrial PLC I/O Mapping | Avionics Data Concentrator |
Use Scenario: Sharing digital I/O status between safety-critical ARM Cortex-R5 processor and legacy 8051-based diagnostics module. IC Role / Device Role / Timing Role: 7130SA55JI serves as MASTER interface with dedicated left/right address spaces mapped to input/output registers. Use Value: Industrial temperature rating (–40°C to +85°C) and MIL-PRF-38535 compliance ensure reliable operation in harsh cabinet environments. | Use Scenario: Aggregating sensor data from multiple ARINC 429 receivers into a centralized health-monitoring subsystem. IC Role / Device Role / Timing Role: 7130SA55JI buffers time-stamped telemetry packets, with left port receiving and right port servicing ARINC transmit FIFOs. Use Value: Open-drain BUSY outputs enable daisy-chained arbitration across three dual-port SRAMs, supporting 12-channel parallel data ingestion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C131-55JC | 55 ns access, 1K × 8, but lacks on-chip arbitration logic and BUSY/INT flags; requires external logic for contention management | Suitable for simple dual-CPU systems without simultaneous access risk; not viable for real-time deterministic arbitration | Select only if arbitration handled externally and board space permits added discrete logic |
| IDT7140SA55JI | Same speed grade and package, but SLAVE-only: BUSY pins are inputs (not outputs), no arbitration logic, no INT flag generation capability | Used exclusively with 7130SA55JI as expansion partner in 16-bit+ systems; cannot operate standalone as MASTER | Required companion part for data bus width expansion; not a functional substitute for 7130SA55JI |
Compared with CY7C131-55JC and IDT7140SA55JI, the 7130SA55JI uniquely integrates arbitration, interrupt signaling, and MASTER functionality - enabling deterministic shared-memory operation without external components or firmware coordination.
Availability
7130SA55JI is available at Aetrix Electronics and suitable for real-time motion control, avionics data concentrators, industrial PLC I/O mapping, and digital signal processing buffers requiring stable component supply across extended product lifecycles.
Supply support for 7130SA55JI 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 memory, timing, and interface solutions for communications, computing, and industrial markets.
The 7130SA/LA product line was designed specifically for deterministic shared-memory architectures in real-time embedded systems, where hardware arbitration eliminates software-induced latency and race conditions.
FAQ
What is the maximum operating temperature range for the 7130SA55JI?
The 7130SA55JI is rated for industrial temperature operation from –40°C to +85°C, validated per MIL-PRF-38535 QML standards. This range ensures reliable performance in factory automation controllers, outdoor telecom equipment, and vehicle-mounted electronics where ambient temperatures exceed commercial-grade limits.
Does the 7130SA55JI support battery backup data retention?
No, the 7130SA55JI does not support battery backup data retention. That feature is exclusive to LA-suffix variants (e.g., 7130LA55JI), which specify VDR = 2.0 V minimum and ICCDR ≤ 4000 µA at 2 V. The SA suffix denotes standard active power consumption without retention mode.
How are BUSY signals used in arbitration for the 7130SA55JI?
In the 7130SA55JI, BUSYL and BUSYR are open-drain outputs that go LOW when the corresponding port detects address contention. External pull-up resistors (typically 4.7 kΩ to VCC) are mandatory. A LOW BUSY asserts write inhibition on that port until the competing access completes, enforcing deterministic arbitration without software intervention.
Can the 7130SA55JI operate with only one port enabled?
Yes, the 7130SA55JI supports asymmetric operation: one port can be fully active (CE low, R/W and OE controlled) while the other remains in standby (CE high), drawing ISB2 = 40 mA max (industrial, 55 ns grade). This reduces total system power in partial-utilization scenarios like diagnostic mode or boot-time initialization.
What package type is used for the 7130SA55JI?
The 7130SA55JI uses a 48-pin ceramic flatpack (FP48) package with dimensions approximately 0.75 in × 0.75 in × 0.11 in. Pin 1 is marked by a notch or dot; the pinout matches the official IDT FP48 diagram (drawing 2689 drw 03F), including dual VCC (Pins 23, 26) and quad GND (Pins 1, 24, 25, 48).
7130SA55JI 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:
- 55ns
- Access Time:
- 55 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)
7130SA55JI FAQ
1.How can I place an order for 7130SA55JI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA55JI 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 7130SA55JI reliable?
The price and inventory of 7130SA55JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA55JI is usually 5 days.
3.What payment methods are accepted for 7130SA55JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA55JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA55JI?
7130SA55JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA55JI 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 7130SA55JI?
For technical support, including 7130SA55JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA55JI requirements.
6.How does Aetrix verify that 7130SA55JI is sourced from the original manufacturer or authorized distributors?
All 7130SA55JI 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 7130SA55JI meets industry standards.
7.What is the process for return or replacement of 7130SA55JI?
All 7130SA55JI units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA55JI, 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 7130SA55JI part is unused and in its original packaging.
Return procedure for 7130SA55JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130SA55JI 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…
