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Renesas 7132LA55PDGI
- Part No.:
- 7132LA55PDGI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7132LA55PDGI.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 48DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,513
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Product details
Overview
IDT7132LA55PDGI 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, features 55ns maximum read cycle time, operates on single 5V ±10% supply, and targets real-time inter-processor communication in industrial control systems.
For engineers reviewing the IDT7132LA55PDGI datasheet, IDT7132LA55PDGI pinout, IDT7132LA55PDGI application, or IDT7132LA55PDGI equivalent, key selection considerations include its master-mode arbitration capability, open-drain BUSY outputs requiring 270Ω pull-up, 1μA full-standby current (ISB3), and compatibility with IDT7142 slave devices for 16-bit+ memory expansion.
Technical Context
The IDT7132LA55PDGI 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 in master/slave configurations.
This device uses CMOS technology to achieve 325mW typical active power and 1mW standby power (ISB3 = 1.0μA typ), with dedicated battery-retention mode enabling 2V operation and sub-100μA data retention current. The 48-pin plastic DIP (PDG48) package integrates separate I/O, address, and control lines for fully independent left/right port operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 8 bits (2048 words × 8-bit wide), providing 16KB addressable space per port |
| Access Time | 55ns max read cycle time (tRC), enabling synchronization with 18.2MHz bus clocks |
| Supply Voltage | 5.0V ±10% (4.5–5.5V), TTL-compatible single-supply operation without level shifters |
| Standby Current | 1.0μA typical (ISB3), allowing battery backup for nonvolatile data retention |
| Data Retention | 2.0V minimum VCC, supporting low-power hold mode during system sleep states |
| Operating Temp | –40°C to +85°C industrial range, qualified for embedded control and automation environments |
| Package | 48-pin plastic DIP (PDG48), 0.55" × 2.43" footprint compatible with standard through-hole PCB assembly |
Pinout & Package
Package: 48-pin plastic dual in-line package (PDG48), body dimensions 0.55 in × 2.43 in × 0.18 in, with through-hole mounting and standard DIP pin spacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Both pins must be connected to system ground plane to ensure signal integrity and power stability |
| VCC (Pin 25) | Power supply | Single 5V ±10% supply input; all VCC pins require local 0.1μF decoupling capacitor |
| CEL / CER (Pins 2, 47) | Chip enable (left/right) | Active-low enables respective port; drives ISB1/ISB2 standby modes when high |
| OEL / OER (Pins 3, 46) | Output enable (left/right) | Active-low controls I/O drivers; high-Z state prevents bus contention during port disable |
| R/WL / R/WR (Pins 4, 45) | Read/write control (left/right) | Low = write, high = read; determines direction of data flow on associated I/O bus |
| BUSYL / BUSYR (Pins 5, 44) | Arbitration status (left/right) | Open-drain outputs requiring 270Ω pull-up; indicate port contention for master-mode coordination |
| A0L–A10L / A0R–A10R (Pins 6–16, 33–43) | Address inputs (left/right) | 11-bit address buses selecting one of 2048 memory locations per port independently |
| I/O0L–I/O7L / I/O0R–I/O7R (Pins 17–23, 26–32) | Data I/O (left/right) | Bidirectional 8-bit data paths; tri-state controlled by OE and CE signals per port |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Hardware-enforced port priority resolution via tAPS timing, eliminating need for external glue logic in multi-processor systems |
| Master/slave expandability | Enables 16-bit+ word width expansion using IDT7142 slaves without performance penalty or timing skew |
| Battery backup support | Valid 2V data retention with ISB3 ≤ 15μA max, enabling seamless power-fail recovery in industrial controllers |
| Open-drain BUSY outputs | Allows wired-OR of multiple BUSY signals for system-level interrupt generation without additional logic gates |
| Independent port power management | Per-port CE control enables asymmetric standby-e.g., left port active while right port consumes <1μA |
Applications
| Real-Time Inter-Processor Communication | Digital Signal Processing Buffering |
|---|---|
|
Use Scenario: Two microcontrollers exchange sensor data and control commands via shared memory without software handshaking. IC Role / Device Role / Timing Role: IDT7132LA55PDGI acts as MASTER dual-port RAM with hardware arbitration, synchronizing writes from CPU-A and reads by CPU-B at 55ns latency. Use Value: Eliminates polling delays and race conditions; BUSY flag stalls contending writes, ensuring deterministic 2K×8 data coherency. |
Use Scenario: DSP core streams audio samples into memory while host processor configures filters and retrieves processed results. IC Role / Device Role / Timing Role: IDT7132LA55PDGI provides independent left/right I/O paths, allowing simultaneous DMA write (DSP) and CPU read (host) operations. Use Value: Sustains 18.2MHz throughput per port with zero wait states, preventing pipeline stalls in real-time audio processing chains. |
| Industrial PLC Memory Expansion | Redundant Control System Data Sharing |
|
Use Scenario: Programmable logic controller expands I/O mapping table capacity beyond single-chip limits using width-expansion topology. IC Role / Device Role / Timing Role: IDT7132LA55PDGI serves as MASTER in 16-bit configuration with IDT7142 slaves, managing BUSY arbitration across four parallel SRAMs. Use Value: Enables error-free 16-bit word access at full speed without external AND gates or timing-critical discrete logic. |
Use Scenario: Fault-tolerant avionics system maintains synchronized state between primary and backup flight computers. IC Role / Device Role / Timing Role: IDT7132LA55PDGI stores critical telemetry and control flags, with BUSY signals triggering cross-check interrupts on contention. Use Value: Guarantees atomic updates via hardware arbitration, preventing split-write corruption during failover transitions. |
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 CY7C136-55JC | 55ns access, 2K×8, but no on-chip arbitration logic; BUSY requires external logic | Lacks master/slave expansion capability; suitable only for simple dual-access, not multi-word systems | Select when arbitration is handled in firmware or external CPLD, not hardware-coordinated memory expansion |
| IDT7142LA55PDGI | Same speed/package, but SLAVE-only: BUSY pins are inputs, no arbitration logic, no battery retention | Designed exclusively as companion to IDT7132; cannot operate standalone as master or retain data at 2V | Use only in width-expanded arrays where IDT7132LA55PDGI provides arbitration and BUSY signaling |
Compared with CY7C136-55JC and IDT7142LA55PDGI, the IDT7132LA55PDGI uniquely combines master-mode arbitration, open-drain BUSY outputs, and 2V battery retention-making it irreplaceable for hardware-synchronized multi-processor memory sharing.
Availability
IDT7132LA55PDGI is available at Aetrix Electronics and suitable for industrial automation, real-time control, and redundant computing applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature operation.
Supply support for IDT7132LA55PDGI 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.
The IDT7132/7142 product line was designed specifically for deterministic, low-latency inter-processor communication in embedded control systems requiring hardware-enforced memory coherency and battery-backed operation.
FAQ
What is the function of BUSYL and BUSYR on the IDT7132LA55PDGI?
BUSYL and BUSYR are open-drain arbitration status outputs indicating port contention. When both ports access the same memory location, the IDT7132LA55PDGI asserts one BUSY line low to stall the later-arriving write. These pins require 270Ω pull-up resistors and enable hardware-coordinated access without software intervention.
Does the IDT7132LA55PDGI support battery backup operation?
Yes, the IDT7132LA55PDGI supports battery backup with data retention down to 2.0V VCC. In retention mode, it draws ≤4000µA (military) or ≤1500µA (commercial) while preserving memory contents-enabling seamless power-fail recovery in industrial controllers and avionics systems.
Can the IDT7132LA55PDGI operate as a standalone dual-port RAM without a slave device?
Yes, the IDT7132LA55PDGI functions as a complete 2K×8 dual-port SRAM without any slave. Its on-chip arbitration logic, BUSY outputs, and independent left/right control make it self-sufficient for inter-processor communication. Slave devices like IDT7142LA55PDGI are optional for width expansion only.
What is the significance of the 'LA' suffix in IDT7132LA55PDGI?
The 'LA' denotes Low-Power Active/Standby version: it delivers identical 55ns performance to 'SA' variants but reduces standby current from 5mW (typ) to 1mW (typ) and enables 2V battery retention. This makes IDT7132LA55PDGI optimal for energy-sensitive industrial and aerospace applications.
Which package type does the IDT7132LA55PDGI use, and what are its mechanical dimensions?
IDT7132LA55PDGI uses the 48-pin plastic DIP (PDG48) package with dimensions 0.55 in × 2.43 in × 0.18 in. This through-hole format ensures robust mechanical mounting in vibration-prone industrial environments and compatibility with legacy PCB assembly processes.
7132LA55PDGI 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:
- 16Kbit
- Memory Organization:
- 2K 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
7132LA55PDGI FAQ
1.How can I place an order for 7132LA55PDGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132LA55PDGI 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 7132LA55PDGI reliable?
The price and inventory of 7132LA55PDGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132LA55PDGI is usually 5 days.
3.What payment methods are accepted for 7132LA55PDGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132LA55PDGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132LA55PDGI?
7132LA55PDGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132LA55PDGI 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 7132LA55PDGI?
For technical support, including 7132LA55PDGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132LA55PDGI requirements.
6.How does Aetrix verify that 7132LA55PDGI is sourced from the original manufacturer or authorized distributors?
All 7132LA55PDGI 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 7132LA55PDGI meets industry standards.
7.What is the process for return or replacement of 7132LA55PDGI?
All 7132LA55PDGI units undergo pre-shipment inspection (PSI). If there is an issue with 7132LA55PDGI, 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 7132LA55PDGI part is unused and in its original packaging.
Return procedure for 7132LA55PDGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7132LA55PDGI Tags
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AT24C02C-XHM-T
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