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Renesas 7132LA25JGI
- Part No.:
- 7132LA25JGI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132LA25JGI.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:161
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Product details
Overview
7132LA25JGI from IDT is a high-speed 2K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, BUSY output flag (open-drain), battery-backed data retention at 2V, and industrial temperature range (–40°C to +85°C). It supports independent asynchronous read/write access on left/right ports and enables 16-bit-or-wider memory expansion when paired with IDT7142 SLAVE devices in real-time control systems.
For engineers reviewing the 7132LA25JGI datasheet, 7132LA25JGI pinout, 7132LA25JGI application, or 7132LA25JGI equivalent, this page delivers verified timing specs (25ns max read cycle), power metrics (1mW standby), BUSY arbitration behavior, package mapping (48-pin flatpack), and validated alternatives for dual-port SRAM selection in deterministic embedded memory subsystems.
Technical Context
The 7132LA25JGI implements hardware-based port arbitration using address and chip-enable inputs to assert BUSYL/BUSYR outputs-open-drain signals requiring 270Ω pull-ups-when concurrent accesses target identical memory locations. Its arbitration logic ignores R/W polarity and triggers BUSY before write pulse initiation to prevent data corruption.
This device operates exclusively at 5.0V ±10% with TTL-compatible I/O, supports full standby current as low as 0.2mA (CMOS-level inputs), and retains data at 2V during battery backup mode-a capability exclusive to LA variants. It is not pin-compatible with IDT7142 SLAVE parts due to BUSY pin direction reversal and absence of arbitration logic in slaves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 8 (2048 words × 8 bits), dual independent ports |
| Access Time (max) | 25ns - guarantees deterministic latency for real-time interrupt handlers and DSP co-processors |
| Supply Voltage | 5.0V ±10% - single-rail operation compatible with legacy 5V logic families |
| Standby Current | 1mW typ. (0.2mA @ 5V) - enables ultra-low-power hold mode during CPU sleep states |
| Data Retention Voltage | 2.0V - maintains memory contents during main power loss using backup battery |
| Operating Temperature | –40°C to +85°C - qualified for industrial automation and avionics edge computing |
| BUSY Signal Type | Open-drain output (BUSYL/BUSYR) - requires external 270Ω pull-up for wired-AND arbitration |
Pinout & Package
7132LA25JGI is packaged in a 48-pin flatpack (FP48) with 0.75″ × 0.75″ footprint and 0.11″ height. All VCC pins must be connected to 5V supply; all GND pins to ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 48) | Ground reference | Three dedicated ground connections minimize ground bounce during simultaneous port switching |
| VCC (Pin 25) | Power supply | Single 5V rail powers both ports; decoupling required within 10mm |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; controls automatic power-down into ISB3/ISB4 modes |
| OEL / OER | Output enable (left/right) | Active-low enables I/O drivers; high-Z state prevents bus contention during arbitration |
| R/WL / R/WR | Read/write control (left/right) | High = read, low = write; determines data flow direction per port independently |
| BUSYL / BUSYR | Arbitration status (output) | Open-drain BUSY flags asserted low when opposite port accesses same address; require 270Ω pull-up |
| A0L–A10L / A0R–A10R | Address inputs (left/right) | 11-bit addressing per port selects one of 2048 locations; no internal latching |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (left/right) | Bidirectional 8-bit buses; high-impedance when CE or OE inactive |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Hardware-enforced priority resolution without external logic; eliminates race conditions in dual-CPU systems |
| Battery backup data retention | Maintains valid data at 2V supply-critical for nonvolatile storage in power-fail scenarios |
| Independent port power management | Per-port CE allows one side to operate while other enters <1µA full-standby (ISB3) mode |
| TTL-compatible I/O | Direct interface with 5V microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
| Master-only BUSY generation | Differentiates 7132LA25JGI from SLAVE IDT7142; enables scalable width-expansion topologies |
Applications
| Real-Time Motion Control | Dual-Processor Communication Buffer |
|---|---|
Use Scenario: Coordinating servo motor position updates between FPGA motion engine and ARM-based safety monitor. IC Role / Device Role / Timing Role: MASTER dual-port SRAM acts as time-deterministic shared memory with hardware arbitration preventing conflicting writes to trajectory buffers. Use Value: 25ns access ensures sub-microsecond inter-processor handshaking; BUSY signaling eliminates software polling overhead. |
Use Scenario: Exchanging sensor fusion data between DSP and host MCU in autonomous vehicle ECU. IC Role / Device Role / Timing Role: Dual-port interface enabling concurrent read (DSP) and write (MCU) without pipeline stalls or DMA arbitration logic. Use Value: Independent CE/OE controls allow dynamic bandwidth allocation; 2V data retention preserves last-known state during brownout. |
| Avionics Display Frame Buffer | Industrial PLC I/O Mapping Memory |
Use Scenario: Storing rendered graphics frames for cockpit display while simultaneously accepting new rendering commands. IC Role / Device Role / Timing Role: Left port serves video controller (read-heavy), right port accepts command processor writes-both accessing same pixel map. Use Value: Hardware BUSY arbitration prevents visual artifacts during frame boundary transitions; 85°C rating supports conduction-cooled enclosures. |
Use Scenario: Holding real-time I/O status tables updated by fieldbus controller and scanned by PLC scan cycle logic. IC Role / Device Role / Timing Role: MASTER SRAM provides deterministic access window for cyclic scan logic while allowing asynchronous diagnostics writes. Use Value: 1mW standby power extends battery runtime in remote I/O modules; open-drain BUSY integrates with existing 24V control bus via level translator. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C133-25JC | 5V, 2K×8, 25ns, but lacks on-chip arbitration and BUSY logic; requires external glue logic for contention handling | Suitable only where software-managed mutual exclusion is acceptable; no hardware stall signaling | Select when cost sensitivity outweighs deterministic arbitration needs and board space permits discrete logic |
| IDT7142LA25JGI | Same speed/package, but SLAVE-only: BUSY pins are inputs (not outputs); no arbitration logic; designed exclusively for width expansion with 7132 | Cannot operate standalone; must be paired with 7132 MASTER; no data retention at 2V | Choose only as companion device in 16-bit+ memory systems where 7132LA25JGI serves as arbitration controller |
Compared with CY7C133-25JC, 7132LA25JGI eliminates external arbitration circuitry and guarantees hardware-enforced write inhibition; versus IDT7142LA25JGI, it provides autonomous master functionality and battery backup-making it irreplaceable in standalone dual-access memory nodes.
Availability
7132LA25JGI is available at Aetrix Electronics and suitable for industrial PLCs, avionics display systems, and real-time motion controllers requiring stable component supply, long-term obsolescence planning, and guaranteed industrial temperature performance.
Supply support for 7132LA25JGI 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, and RF solutions, now part of Renesas Electronics.
The IDT7132/7142 product line was designed specifically for deterministic dual-processor memory sharing in aerospace, industrial automation, and telecommunications infrastructure-prioritizing hardware arbitration, low-latency access, and robust power management.
FAQ
What is the function of BUSYL and BUSYR on the 7132LA25JGI?
BUSYL and BUSYR are open-drain arbitration outputs on the 7132LA25JGI that go low when the opposite port initiates an access to the same memory address. They require 270Ω pull-up resistors and signal contention to external logic or CPUs. These pins are outputs only on the MASTER 7132LA25JGI-not inputs like on IDT7142 SLAVE devices.
Does the 7132LA25JGI support true 2V battery backup operation?
Yes, the 7132LA25JGI supports guaranteed data retention at VCC = 2.0V (per Table 6), a feature exclusive to LA variants. At this voltage, ICCDR is specified up to 4000µA (military/industrial), enabling extended hold time from coin-cell batteries during main power loss-verified in the datasheet's Data Retention Characteristics section.
Can the 7132LA25JGI operate without external pull-up resistors on BUSY pins?
No. The 7132LA25JGI BUSYL and BUSYR pins are open-drain outputs and will not drive high without external 270Ω pull-up resistors to VCC. Omitting these causes BUSY signals to float, breaking arbitration and risking data corruption during port contention-explicitly stated in Note 1 of the Functional Block Diagram.
How does the 7132LA25JGI differ from the IDT7142LA25JGI in pin compatibility?
The 7132LA25JGI and IDT7142LA25JGI share identical FP48 pinouts and electrical specs but differ critically in BUSY pin function: 7132LA25JGI has BUSYL/BUSYR as outputs with arbitration logic, while IDT7142LA25JGI has them as inputs with no arbitration. Swapping them causes functional failure-no pin-to-pin replacement is possible.
What is the minimum CE pulse width required for reliable operation of the 7132LA25JGI?
The 7132LA25JGI requires CE assertion for at least tEW (Chip Enable to End-of-Write) - 20ns min for 25ns grade - to complete write cycles. For read operations, CE must remain active for full tRC (25ns). Shorter pulses risk incomplete memory access or undefined BUSY arbitration behavior, as defined in Tables 9 and 8a of the datasheet.
7132LA25JGI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 25ns
- Access Time:
- 25 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)
7132LA25JGI FAQ
1.How can I place an order for 7132LA25JGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132LA25JGI 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 7132LA25JGI reliable?
The price and inventory of 7132LA25JGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132LA25JGI is usually 5 days.
3.What payment methods are accepted for 7132LA25JGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132LA25JGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132LA25JGI?
7132LA25JGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132LA25JGI 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 7132LA25JGI?
For technical support, including 7132LA25JGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132LA25JGI requirements.
6.How does Aetrix verify that 7132LA25JGI is sourced from the original manufacturer or authorized distributors?
All 7132LA25JGI 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 7132LA25JGI meets industry standards.
7.What is the process for return or replacement of 7132LA25JGI?
All 7132LA25JGI units undergo pre-shipment inspection (PSI). If there is an issue with 7132LA25JGI, 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 7132LA25JGI part is unused and in its original packaging.
Return procedure for 7132LA25JGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7132LA25JGI Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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