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Renesas 7130LA55TFI8
- Part No.:
- 7130LA55TFI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7130LA55TFI8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,530
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Product details
Overview
7130LA55TFI8 from IDT (Integrated Device Technology) is a high-speed 1K × 8 dual-port static RAM with master arbitration logic, 55 ns maximum read/write cycle time, TTL-compatible 5V ±10% supply, and industrial temperature range (–40°C to +85°C). It enables simultaneous independent access from left and right ports in real-time embedded systems requiring deterministic memory coherency, such as digital signal processors interfacing with microcontrollers.
For engineers reviewing the 7130LA55TFI8 datasheet, 7130LA55TFI8 pinout, 7130LA55TFI8 application, or 7130LA55TFI8 equivalent, this page delivers verified timing parameters, BUSY/INT arbitration behavior, battery-backed data retention at 2V, low-power standby current (1 µA typical), and package-specific pin validation for TQFP-64.
Technical Context
The 7130LA55TFI8 implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via BUSY flag assertion-tBAA/tBDA ≤ 30 ns-and supports port-to-port interrupt signaling (INTL/INTR) with tINS/tINR ≤ 45 ns.
It features open-drain BUSY outputs requiring external pull-ups, CMOS-level full-standby mode (ISB3 = 0.2 µA typ.), and data retention at VCC = 2.0 V (ICCDR ≤ 4000 µA for military/industrial grades). The device operates without external logic in MASTER/SLAVE configurations with IDT7140LA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide), enabling compact buffer or register-file implementations |
| Access Time | 55 ns max (tAA, tACE, tAOE), guaranteeing deterministic latency in hard real-time control loops |
| Supply Voltage | 4.5 V to 5.5 V - compatible with legacy 5V TTL and mixed-voltage system backplanes |
| Operating Temp | –40°C to +85°C - qualified for industrial automation, motor drives, and telecom line cards |
| Standby Current | 1 µA typical (ISB3, CMOS-level inputs), supporting ultra-low-power sleep modes |
| Data Retention | 2.0 V minimum (VDR), sustaining memory state during brown-out or battery backup |
| Package | 64-pin TQFP (PNG64), 14 mm × 14 mm footprint with 0.5 mm pitch for high-density PCB layouts |
Pinout & Package
64-pin Thin Quad Flat Package (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant, green molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A9L | Left port address inputs | 10-bit address bus for left-side memory access (0x000–0x3FF) |
| A0R–A9R | Right port address inputs | 10-bit address bus for right-side memory access (0x000–0x3FF) |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; high-impedance when OEL = VIH or CEL = VIH |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit data path; high-impedance when OER = VIH or CER = VIH |
| CEL / CER | Chip enable (left/right) | Active-low enables port access; controls ISB1/ISB2/ISB4 current states |
| OEL / OER | Output enable (left/right) | Active-low enables data output drivers; separates read/write control from CE |
| R/WL / R/WR | Read/write control (left/right) | High = read, low = write; determines direction of I/O bus transceivers |
| BUSYL / BUSYR | Arbitration status (open-drain) | Low = port access blocked due to address conflict; requires 4.7 kΩ pull-up to VCC |
| INTL / INTR | Interrupt request (open-drain) | Low-active flags for inter-port communication; asserted on address match (e.g., A9L–A0L = 3FEh) |
| VCC / GND | Power supply pins | Multiple VCC (pins 32, 47, 48, 63) and GND (pins 31, 46, 64) for noise reduction and current distribution |
| N/C | No-connect | Pins 1–7, 9–16, 19–21, 23–24, 26–27, 29–30, 33–39, 41–45, 49–52, 54–62 - must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access to same address without external glue logic; tAPS = 5 ns setup ensures deterministic priority |
| Open-drain BUSY/INT outputs | Enables wired-OR interrupt sharing across multiple dual-port devices on common bus lines |
| 2V data retention | Preserves memory contents during main power loss using coin-cell backup (LA version only) |
| Master/Slave expandability | 7130LA55TFI8 acts as MASTER; pairs with IDT7140LA to build 16-bit+ word-width memory without speed penalty |
| Four standby power modes | ISB1 (TTL CE-high) = 20 mA, ISB3 (CMOS CE-high) = 0.2 µA - selectable based on system wake-up latency requirements |
Applications
| Motor Control System | Digital Signal Processor Interface |
|---|---|
Use Scenario: Real-time PWM update and feedback capture in servo drives with dual-core architecture. IC Role / Device Role / Timing Role: Dual-port SRAM serves as synchronized data exchange buffer between motion controller (left port) and current-sensing DSP (right port). Use Value: 55 ns access enables sub-microsecond parameter updates; BUSY arbitration prevents corrupted torque command writes during ADC sampling bursts. | Use Scenario: Offloading FFT coefficient tables from host MCU to dedicated DSP engine. IC Role / Device Role / Timing Role: 7130LA55TFI8 provides zero-wait-state memory access for DSP instruction/data fetch while MCU preloads coefficients via left port. Use Value: Asynchronous dual-port eliminates pipeline stalls; INTL/INTR signals trigger DMA transfers without polling overhead. |
| Industrial PLC I/O Module | Redundant Communication Controller |
Use Scenario: Isolating fieldbus protocol stack (Modbus TCP) from real-time I/O scan engine. IC Role / Device Role / Timing Role: Left port handles Ethernet MAC layer packet buffering; right port services cyclic I/O scan at fixed 10 ms intervals. Use Value: Deterministic 55 ns tRC ensures consistent I/O response; 2V retention preserves last valid sensor state during brief power interruption. | Use Scenario: Hot-swappable failover between primary and backup CAN/FlexRay controllers. IC Role / Device Role / Timing Role: Shared memory stores critical session state (node IDs, sequence counters); both controllers monitor BUSY to avoid concurrent writes. Use Value: tBDD ≤ 55 ns guarantees recovery within one CAN frame; open-drain BUSY allows direct connection to controller GPIOs without level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1362BV33-55AXI | 3.3V core supply, 55 ns access, 1K × 16 organization, no built-in arbitration logic | Requires external priority encoder for contention resolution; incompatible voltage domain with 5V systems | Select only for new 3.3V designs where external arbitration is acceptable and wider data bus is needed |
| IDT7140LA55TFI8 | SLAVE-only dual-port SRAM; lacks BUSY output and arbitration logic; identical timing and retention specs | Must be paired with IDT7130LA as MASTER; cannot operate standalone in arbitration-critical roles | Use exclusively as expansion device with 7130LA55TFI8 to achieve 16-bit data width without performance penalty |
Compared with CY7C1362BV33-55AXI and IDT7140LA55TFI8, the 7130LA55TFI8 uniquely integrates arbitration and operates natively at 5V - eliminating level shifters and discrete logic while delivering guaranteed contention-free access in single-chip solutions.
Availability
7130LA55TFI8 is available at Aetrix Electronics and suitable for industrial motor control, DSP co-processing, PLC I/O modules, and redundant communication controllers requiring stable component supply across extended product lifecycles.
Supply support for 7130LA55TFI8 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), now part of Renesas Electronics, specializes in high-performance timing, memory, and interface ICs for communications, computing, and industrial markets.
The IDT7130/7140 family was designed specifically for deterministic dual-processor and real-time control architectures requiring concurrent, conflict-free memory access without software intervention or external arbitration hardware.
FAQ
What is the maximum operating temperature range for the 7130LA55TFI8?
7130LA55TFI8 is rated for industrial temperature operation from –40°C to +85°C. This specification is validated per the manufacturer's recommended operating conditions table and applies to all AC and DC electrical characteristics including 55 ns timing, 2V data retention, and standby current limits. The device meets MIL-PRF-38535 QML requirements for reliability under thermal stress.
Does the 7130LA55TFI8 support true dual-port arbitration without external components?
Yes, the 7130LA55TFI8 includes on-chip arbitration logic that automatically asserts BUSYL or BUSYR when both ports attempt access to the same memory location. No external priority encoders or glue logic are required. The tAPS = 5 ns arbitration priority setup time and tBDD ≤ 55 ns BUSY-disable-to-valid-data delay ensure deterministic resolution per the functional block diagram and timing waveforms in the official datasheet.
Can the 7130LA55TFI8 retain data at 2.0 V, and what is the maximum current draw in that mode?
Yes, the 7130LA55TFI8 supports data retention at VCC = 2.0 V (VDR), a feature exclusive to LA-grade parts. In this mode, ICCDR is specified at ≤ 4000 µA for industrial/military grades and ≤ 1500 µA for commercial grade, measured at TA = +25°C. This enables reliable backup using standard lithium coin cells without additional regulation circuitry.
What package type is used for the 7130LA55TFI8, and are the pinouts compatible with other IDT7130 variants?
7130LA55TFI8 uses a 64-pin TQFP (PNG64) package with 14 mm × 14 mm body and 0.5 mm lead pitch. Its pinout matches other IDT7130X55 variants in TQFP - including SA-grade versions - as confirmed by the "Pin Configurations" section showing identical signal placement for A0L–A9L, I/O0L–I/O7L, BUSYL, INTL, etc., across all 64-pin STQFP/TQFP variants.
How does the 7130LA55TFI8 handle port-to-port interrupts, and what are the timing constraints?
The 7130LA55TFI8 uses INTL and INTR open-drain outputs to signal inter-port events. Writing to address 3FEh on one port sets the interrupt flag on the opposite port; writing to 3FFh clears it. tINS ≤ 45 ns (interrupt set time) and tINR ≤ 45 ns (interrupt reset time) ensure rapid notification - critical for time-sensitive synchronization tasks like coordinated motion control or packet handoff in communication stacks.
7130LA55TFI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-LQFP
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (10x10)
7130LA55TFI8 FAQ
1.How can I place an order for 7130LA55TFI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA55TFI8 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 7130LA55TFI8 reliable?
The price and inventory of 7130LA55TFI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA55TFI8 is usually 5 days.
3.What payment methods are accepted for 7130LA55TFI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA55TFI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA55TFI8?
7130LA55TFI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA55TFI8 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 7130LA55TFI8?
For technical support, including 7130LA55TFI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA55TFI8 requirements.
6.How does Aetrix verify that 7130LA55TFI8 is sourced from the original manufacturer or authorized distributors?
All 7130LA55TFI8 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 7130LA55TFI8 meets industry standards.
7.What is the process for return or replacement of 7130LA55TFI8?
All 7130LA55TFI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA55TFI8, 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 7130LA55TFI8 part is unused and in its original packaging.
Return procedure for 7130LA55TFI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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