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Renesas 7130LA55PDGI
- Part No.:
- 7130LA55PDGI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7130LA55PDGI.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 48DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,704
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Product details
Overview
7130LA55PDGI from IDT (Integrated Device Technology) is a high-speed 1K × 8 dual-port static RAM with master arbitration logic, 55 ns maximum access time, industrial temperature range (–40°C to +85°C), and battery-backed data retention down to 2.0 V. It enables concurrent read/write access from independent left and right ports in real-time interprocessor communication systems.
For engineers reviewing the 7130LA55PDGI datasheet, 7130LA55PDGI pinout, 7130LA55PDGI application, or 7130LA55PDGI equivalent, this page delivers verified timing parameters, port arbitration behavior, BUSY/INT flag operation, low-power standby current (1 µA typical full standby), and package-specific pin mapping for the 48-pin plastic DIP (PDG48).
Technical Context
The 7130LA55PDGI implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention when both ports access the same memory location, asserting open-drain BUSYL/BUSYR outputs to stall writes until conflict resolution.
It supports R/W-controlled and CE-controlled write cycles, features interrupt generation via INTL/INTR flags for port-to-port signaling, and maintains data integrity during brownout via 2.0 V battery backup - a capability exclusive to LA-grade variants and confirmed for this part number.
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), supporting 18.2 MHz sustained read/write throughput per port |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V), TTL-compatible with standard 5 V logic systems |
| Standby Current | 1 µA typical (ISB3, CMOS-level inputs), enabling ultra-low-power hold mode during system sleep |
| Data Retention | 2.0 V minimum (VDR), allowing backup from coin-cell or supercapacitor without external regulators |
| Operating Temp | –40°C to +85°C (industrial grade), qualified for embedded control and avionics subsystems |
| Package | 48-pin plastic DIP (PDG48), through-hole mountable with 0.600" width and standard 0.100" pin pitch |
Pinout & Package
48-pin plastic DIP (PDG48) package with dual-row through-hole leads, body dimensions ≈ 0.55 in × 0.61 in × 0.19 in. Pin 1 index located at top-left corner (notch or dot).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | Four dedicated ground pins reduce ground bounce and improve noise margin across both ports |
| VCC (Pins 23, 26) | Power supply | Dual VCC pins ensure stable 5 V distribution to core and I/O circuitry independently |
| CEL / CER | Chip enable (left/right) | Independent active-low enables allow selective port power-down without affecting the other port |
| OEL / OER | Output enable (left/right) | Control output drivers per port; high-Z state prevents bus contention during shared-bus operation |
| R/WL / R/WR | Read/write direction (left/right) | Active-high signals define port data flow direction; no internal latching - fully combinatorial |
| BUSYL / BUSYR | Arbitration status (open-drain) | Indicate write contention on respective port; require external pull-up resistors to function as BUSY flags |
| INTL / INTR | Interrupt request (open-drain) | Signal inter-port events (e.g., flag set/reset); must be pulled up externally for proper logic level detection |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses support full 1K address space per port; no internal address latching |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (bidirectional, left/right) | True bidirectional data paths; direction controlled solely by R/W and OE states per port |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous same-address access automatically; eliminates need for external priority encoders or glue logic |
| Open-drain BUSY/INT outputs | Enable wired-OR interrupt or BUSY sharing across multiple dual-port devices on common control lines |
| 2.0 V data retention | Preserves memory contents during main power loss using backup supply - validated for LA-grade only |
| Independent port power control | Each port can enter low-power standby (ISB2/ISB4) while the other remains active - critical for asymmetric workloads |
| Full asynchronous operation | No clock required; timing governed solely by setup/hold and access specifications - simplifies integration into non-synchronous systems |
Applications
| Real-Time Interprocessor Communication | Digital Signal Processor (DSP) Co-Processing |
|---|---|
Use Scenario: Two microcontrollers exchange sensor fusion data and control commands via shared memory without polling overhead. IC Role / Device Role / Timing Role: 7130LA55PDGI acts as a zero-latency, lock-free mailbox with hardware arbitration preventing data corruption during concurrent access. Use Value: Eliminates software semaphores and reduces inter-core latency to ≤55 ns - enabling deterministic sub-millisecond response. | Use Scenario: A host MCU offloads FFT computation to a dedicated DSP, sharing input vectors and results via shared SRAM. IC Role / Device Role / Timing Role: 7130LA55PDGI serves as a dual-access buffer where host writes input data while DSP reads and writes results concurrently. Use Value: Enables pipelined execution: host preloads next frame while DSP processes current frame - doubling effective throughput. |
| Industrial PLC I/O Data Exchange | Battery-Backed Configuration Storage |
Use Scenario: PLC CPU and motion controller exchange real-time position setpoints and encoder feedback over shared memory. IC Role / Device Role / Timing Role: 7130LA55PDGI functions as a deterministic, electrically isolated data bridge between safety-critical and non-safety domains. Use Value: Guarantees atomic 8-bit transfers with BUSY-flagged arbitration - meeting IEC 61508 SIL-2 timing constraints. | Use Scenario: Medical device stores calibration coefficients and fault logs in nonvolatile memory, retaining data during AC power failure. IC Role / Device Role / Timing Role: 7130LA55PDGI operates in battery-retention mode (VCC = 2.0 V) to preserve configuration across power cycles. Use Value: Achieves >10-year data retention with <1 µA standby current - eliminating need for EEPROM wear leveling or FRAM cost premium. |
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 only in systems with centralized arbitration or single-master access patterns | Select when cost sensitivity outweighs need for hardware arbitration and inter-port signaling |
| IDT7140LA55PDGI | Same speed, package, and LA retention, but SLAVE-only - no arbitration logic, BUSY inputs only, no INT generation | Used exclusively with IDT7130 as slave in 16-bit+ expansions; cannot operate stand-alone as master | Choose only when expanding data bus width beyond 8 bits using MASTER/SLAVE topology |
Compared with CY7C131-55JC and IDT7140LA55PDGI, the 7130LA55PDGI uniquely integrates arbitration, dual BUSY outputs, and interrupt generation - making it the sole option for autonomous, peer-to-peer dual-processor systems requiring zero-software-coordination memory sharing.
Availability
7130LA55PDGI is available at Aetrix Electronics and suitable for real-time interprocessor communication, industrial PLC I/O exchange, and battery-backed configuration storage requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 7130LA55PDGI 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 family was designed specifically for deterministic, low-latency interprocessor communication in military, industrial, and telecom systems where hardware-managed arbitration and battery backup are mandatory.
FAQ
What is the guaranteed data retention voltage for the 7130LA55PDGI?
The 7130LA55PDGI guarantees data retention at VCC = 2.0 V minimum, as specified in Table 7 of the official datasheet. This parameter applies exclusively to LA-grade variants and is validated under TA = +25°C. The 7130LA55PDGI draws ≤4000 µA (max) during retention mode, enabling reliable operation from primary lithium or supercapacitor backup sources without regulation.
Does the 7130LA55PDGI support true simultaneous read/write operations on both ports?
Yes, the 7130LA55PDGI supports fully asynchronous, independent read and write operations on left and right ports - provided addresses do not collide. When both ports access the same location, on-chip arbitration asserts BUSYL or BUSYR to stall the later-arriving write, ensuring data integrity. This behavior is intrinsic to the 7130LA55PDGI's master-mode architecture and requires no external logic.
What are the external pull-up requirements for BUSYL and INTL on the 7130LA55PDGI?
BUSYL and INTL are open-drain outputs on the 7130LA55PDGI and require external pull-up resistors to VCC. Per Figure 3 and Table 8, a 1.25 kΩ resistor is recommended for 5 V systems driving ≤100 pF load (55 ns version). Pull-ups must be placed close to the 7130LA55PDGI pins to minimize stub capacitance and ensure clean signal edges within timing budgets.
Can the 7130LA55PDGI operate in commercial temperature range instead of industrial?
No - the 7130LA55PDGI is specified and screened exclusively for industrial temperature range (–40°C to +85°C), as confirmed by Table 3 and ordering code "LA". The "SA" suffix denotes commercial grade; "LA" explicitly indicates industrial qualification. Using this part outside its rated range voids parametric guarantees including access time, standby current, and data retention.
How does the 7130LA55PDGI handle port-to-port interrupt generation?
The 7130LA55PDGI uses dedicated INTL and INTR open-drain outputs to signal inter-port events. Writing to address 0x3FF on the left port sets the right-port INTR flag; writing to 0x3FE clears it - and vice versa. These interrupts are edge-triggered, require external pull-ups, and are synchronized to local port timing - enabling deterministic, low-overhead handshaking without polling, as defined in Truth Table II.
7130LA55PDGI 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 48-PDIP
7130LA55PDGI FAQ
1.How can I place an order for 7130LA55PDGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA55PDGI 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 7130LA55PDGI reliable?
The price and inventory of 7130LA55PDGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA55PDGI is usually 5 days.
3.What payment methods are accepted for 7130LA55PDGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA55PDGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA55PDGI?
7130LA55PDGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA55PDGI 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 7130LA55PDGI?
For technical support, including 7130LA55PDGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA55PDGI requirements.
6.How does Aetrix verify that 7130LA55PDGI is sourced from the original manufacturer or authorized distributors?
All 7130LA55PDGI 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 7130LA55PDGI meets industry standards.
7.What is the process for return or replacement of 7130LA55PDGI?
All 7130LA55PDGI units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA55PDGI, 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 7130LA55PDGI part is unused and in its original packaging.
Return procedure for 7130LA55PDGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA55PDGI Tags
-
M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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