My Inquiry
My Account
Renesas 7132LA25J
- Part No.:
- 7132LA25J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132LA25J.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,147
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
IDT7132LA25J from Integrated Device Technology (IDT) is a high-speed 2K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, BUSY output flag, and battery-backed data retention at 2V. It supports independent asynchronous read/write access on left and right ports, operates on single 5V ±10% supply, and targets real-time inter-processor communication in industrial control systems requiring deterministic memory arbitration.
For engineers reviewing the IDT7132LA25J datasheet, IDT7132LA25J pinout, IDT7132LA25J application, or IDT7132LA25J equivalent, key selection criteria include its 25ns max read cycle time, 1μA full-standby current (ISB3), open-drain BUSY outputs requiring 270Ω pull-up, industrial temperature range (–40°C to +85°C), and compatibility with IDT7142LA slave devices for 16-bit+ width expansion.
Technical Context
The IDT7132LA25J implements hardware-based port arbitration using address and chip-enable inputs to assert BUSYL/BUSYR outputs when concurrent accesses target identical memory locations. Its arbitration logic ignores R/W polarity and triggers BUSY before write pulse initiation, enforcing strict timing constraints (tAPS = 5ns min) to prevent data corruption during master/slave cascading.
This device uses CMOS technology to achieve 325mW typical active power and 1mW standby power (LA variant), with dedicated 2V data retention mode enabling nonvolatile operation during main supply loss. The 48-pin flatpack package integrates separate I/O, address, and control lines per port, supporting fully independent asynchronous operation without external glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 8 bits (2048 words × 8-bit wide), providing 16KB address space per port |
| Access Time | 25ns maximum read cycle time (tRC), enabling 40MHz sustained throughput in industrial systems |
| Supply Voltage | 5.0V ±10% (4.5–5.5V), TTL-compatible single-supply operation with no level-shifting required |
| Standby Current | 1μA typical full-standby current (ISB3) with CMOS-level inputs, critical for low-power battery backup |
| Temperature Range | –40°C to +85°C industrial grade, qualified for embedded control and automation environments |
| Data Retention | 2V minimum VCC for data retention (VDR), supporting >100μA retention current in backup mode |
| Arbitration Logic | On-chip hardware arbitration with 5ns priority setup time (tAPS), eliminating need for external contention resolution |
Pinout & Package
Package: 48-pin flatpack (FP48), body dimensions 0.75 in × 0.75 in × 0.11 in, leadless ceramic construction rated for industrial thermal cycling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Two dedicated ground pins ensure stable reference for dual-port I/O and reduce ground bounce during simultaneous access |
| VCC (Pin 25) | Power supply | Single 5V supply powers both ports; all VCC pins must be connected per datasheet note |
| CEL / CER (Pins 3, 23) | Chip enable (left/right) | Independent port selection; CE = VIH places port in ultra-low-power ISB3 mode (1μA) |
| OEL / OER (Pins 4, 22) | Output enable (left/right) | Controls I/O bus direction; OE = VIH disables outputs, placing I/O pins in high-impedance state |
| R/WL / R/WR (Pins 7, 20) | Read/write control (left/right) | R/W = VIH enables read; R/W = VIL enables write; controls internal data path direction per port |
| BUSYL / BUSYR (Pins 8, 19) | Busy flag (left/right) | Open-drain outputs requiring 270Ω pull-up; asserted LOW during address contention to stall conflicting writes |
| A0L–A10L / A0R–A10R (Pins 5,9–18,21,26–36) | Address inputs (left/right) | 11-bit address buses (2048 locations); address stability required before CE assertion for arbitration |
| I/O0L–I/O7L / I/O0R–I/O7R (Pins 10–17, 27–34) | Data I/O (left/right) | Bidirectional 8-bit data buses; high-impedance when CE=VIH or OE=VIH, preventing bus conflicts |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Hardware-based contention detection using address and CE inputs eliminates need for external arbitration circuitry |
| 2V data retention | Preserves memory contents during main power loss using backup supply, validated at 2.0V minimum VCC |
| Ultra-low standby power | 1μA typical ISB3 current with CMOS-level inputs enables battery-backed operation for extended periods |
| Master/slave expandability | Enables 16-bit+ word width systems by pairing with IDT7142LA slaves without additional discrete logic |
| Open-drain BUSY outputs | Allows wired-OR of multiple BUSY signals for system-level interrupt generation or write-inhibit chaining |
Applications
| Industrial PLC Memory Buffer | Real-Time Inter-Processor Communication |
|---|---|
Use Scenario: Dual-CPU programmable logic controller where CPU-A handles I/O scanning and CPU-B executes control algorithms, sharing status registers and process variables. IC Role / Device Role / Timing Role: IDT7132LA25J serves as MASTER dual-port RAM with hardware arbitration, synchronizing data exchange between CPUs without software overhead. Use Value: 25ns access time ensures sub-microsecond interlock response; BUSY logic prevents race conditions during simultaneous register updates. |
Use Scenario: Avionics flight management system with separate navigation and guidance processors accessing shared trajectory tables. IC Role / Device Role / Timing Role: IDT7132LA25J acts as deterministic shared memory with guaranteed contention resolution via tAPS=5ns arbitration setup. Use Value: Industrial temperature rating (–40°C to +85°C) and 2V data retention maintain integrity during power transients and thermal stress. |
| Redundant Control System Memory | Test Equipment Pattern Memory |
Use Scenario: Fault-tolerant railway signaling system with active/standby controllers maintaining synchronized state via shared memory. IC Role / Device Role / Timing Role: IDT7132LA25J provides atomic read-modify-write capability through BUSY-driven write inhibition during failover transitions. Use Value: Open-drain BUSY outputs enable wired-OR across redundant channels for centralized fault detection and recovery coordination. |
Use Scenario: Automated test equipment storing stimulus/response patterns for semiconductor wafer probing. IC Role / Device Role / Timing Role: IDT7132LA25J functions as high-speed pattern buffer with independent port access allowing simultaneous pattern loading and execution. Use Value: 325mW typical active power and 1mW standby support thermally constrained benchtop instruments without forced cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Cypress CY7C136-25JC | 2K × 8, 25ns, but lacks on-chip arbitration logic and BUSY outputs; requires external logic for contention management | Suitable for simpler dual-access systems without strict deterministic arbitration requirements | Select when cost sensitivity outweighs need for hardware arbitration and 2V retention |
| IDT7142LA25J | SLAVE-only variant with BUSY inputs (not outputs); no arbitration logic; identical timing and power specs | Used only in width-expanded configurations paired with IDT7132LA25J as MASTER | Required when building 16-bit+ memory systems; not standalone-replaceable for IDT7132LA25J |
Compared with CY7C136-25JC, IDT7132LA25J delivers deterministic arbitration without external components, while IDT7142LA25J serves exclusively as a companion SLAVE-neither offers the MASTER functionality, 2V retention, or open-drain BUSY outputs essential for autonomous contention resolution in industrial control.
Availability
IDT7132LA25J is available at Aetrix Electronics and suitable for industrial PLC memory buffers, real-time inter-processor communication systems, and redundant control system memory requiring stable component supply across extended production lifecycles.
Supply support for IDT7132LA25J 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
Integrated Device Technology (IDT) is a fabless semiconductor company specializing in timing, memory interface, and RF solutions for communications, computing, and industrial markets.
IDT7132LA25J belongs to the IDT7132/7142 dual-port SRAM product line, designed specifically for deterministic, low-latency shared memory in real-time embedded systems requiring hardware-enforced arbitration and battery backup capability.
FAQ
What is the maximum operating speed of the IDT7132LA25J?
The IDT7132LA25J has a maximum read cycle time (tRC) of 25ns, supporting up to 40MHz sustained memory access. This speed is guaranteed over the full industrial temperature range (–40°C to +85°C) and 4.5V–5.5V supply voltage, making it suitable for real-time control applications where deterministic latency is critical. The IDT7132LA25J achieves this performance using high-speed CMOS process technology while maintaining low power consumption.
Does the IDT7132LA25J support battery backup operation?
Yes, the IDT7132LA25J supports battery backup operation with guaranteed data retention at VCC = 2.0V minimum. In retention mode, it draws ≤4000µA (military/industrial) or ≤1500µA (commercial) current, enabling extended hold times on backup power. This feature is exclusive to LA variants and is validated per datasheet Table 6, distinguishing IDT7132LA25J from SA versions which lack retention capability.
How does the BUSY arbitration logic work on the IDT7132LA25J?
The IDT7132LA25J implements hardware arbitration that asserts BUSYL or BUSYR LOW when both ports access the same memory address. Arbitration depends solely on address and chip-enable timing-not R/W state-with a 5ns priority setup time (tAPS). If tAPS is violated, BUSY may assert unpredictably. The open-drain BUSY outputs require 270Ω pull-up resistors and can be wired-OR'd for system-level interrupt signaling, as specified in datasheet Note 1 and Figure 3.
What package type is used for the IDT7132LA25J?
The IDT7132LA25J is packaged in a 48-pin flatpack (FP48) with dimensions 0.75 in × 0.75 in × 0.11 in. This hermetically sealed ceramic package meets MIL-PRF-38535 QML requirements for reliability in harsh environments and supports industrial temperature operation. Pin configuration matches the standard FP48 layout shown in datasheet Drawing 2692 drw 03F, including dedicated GND (Pins 1, 24) and VCC (Pin 25) connections.
Can the IDT7132LA25J be used as a standalone dual-port RAM without a slave device?
Yes, the IDT7132LA25J functions as a complete standalone 2K × 8 dual-port SRAM with full arbitration capability. Its MASTER designation means it contains on-chip arbitration logic and BUSY outputs, unlike SLAVE-only IDT7142 devices. Standalone use is common in inter-processor communication, FIFO buffering, and real-time data logging-only width expansion to 16-bit+ requires pairing with IDT7142LA25J slaves per datasheet Section "MASTER IDT7132 easily expands data bus width".
7132LA25J 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:
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7132LA25J FAQ
1.How can I place an order for 7132LA25J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132LA25J 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 7132LA25J reliable?
The price and inventory of 7132LA25J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132LA25J is usually 5 days.
3.What payment methods are accepted for 7132LA25J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132LA25J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132LA25J?
7132LA25J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132LA25J 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 7132LA25J?
For technical support, including 7132LA25J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132LA25J requirements.
6.How does Aetrix verify that 7132LA25J is sourced from the original manufacturer or authorized distributors?
All 7132LA25J 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 7132LA25J meets industry standards.
7.What is the process for return or replacement of 7132LA25J?
All 7132LA25J units undergo pre-shipment inspection (PSI). If there is an issue with 7132LA25J, 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 7132LA25J part is unused and in its original packaging.
Return procedure for 7132LA25J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7132LA25J 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…
