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Renesas 7132LA100CB
- Part No.:
- 7132LA100CB
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7132LA100CB.pdf
- Description:
- IC SRAM 16KBIT PARALLEL SB48
- Quantity:
- Payment:
- Shipping:
Inventory:2,313
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Product details
Overview
IDT7132LA100CB 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 at 100ns max read cycle time, consumes 1mA typical full-standby current (ISB3), and targets real-time interprocessor communication in industrial control systems.
For engineers reviewing the IDT7132LA100CB datasheet, IDT7132LA100CB pinout, IDT7132LA100CB application, or IDT7132LA100CB equivalent, key selection criteria include dual-port arbitration timing (tBAA ≤ 50ns), open-drain BUSY output requiring 270Ω pull-up, 48-pin flatpack package compatibility, and LA-series 2V data retention capability - all critical for deterministic memory coherency in multi-CPU architectures.
Technical Context
The IDT7132LA100CB implements hardware-based port arbitration using address and chip-enable inputs to assert BUSYL/BUSYR outputs within 50ns, preventing simultaneous writes to identical addresses. Its CMOS design enables TTL-compatible 5V ±10% operation with separate CE/OE/R/W controls per port and automatic power-down when CE = VIH.
As a MASTER-only device, it integrates arbitration logic and open-drain BUSY outputs (requiring external 270Ω pull-ups), while SLAVE devices like IDT7142LA100CB accept BUSY as an input to inhibit writes. The LA variant guarantees 2V data retention with ICCDR ≤ 4000µA (military/industrial) and ISB3 ≤ 1.0mA (commercial).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 8 bits (2048 words × 8-bit data width per port) |
| Max Read Cycle Time (tRC) | 100ns - defines minimum interval between successive reads on same port |
| Full Standby Current (ISB3) | 1.0mA (typ.) - power consumed when both ports disabled with CMOS-level inputs |
| Data Retention Voltage | 2.0V - maintains stored data during brown-out or backup-battery operation |
| Arbitration Access Time (tBAA) | 50ns (max.) - delay from address/CE assertion to BUSY output assertion |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Supply Voltage | 4.5V to 5.5V - TTL-compatible 5V ±10% operation with no level-shifting required |
Pinout & Package
Package: 48-pin flatpack (FP48), body size ≈ 0.75 in × 0.75 in × 0.11 in, leadless ceramic construction with side-braze or plastic DIP alternatives available.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Both pins must be connected to system ground plane for noise immunity and power integrity |
| VCC (Pin 25) | Power supply | Single 5V ±10% supply; all VCC pins require local 0.1µF decoupling |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; VIH = 2.2V min., drives ISB1/ISB2 current states |
| OEL / OER | Output enable (left/right) | Active-low enables I/O drivers; controls tAOE (11–40ns) and output Z-state timing |
| R/WL / R/WR | Read/write control (left/right) | High = read, low = write; determines direction of data flow on I/O lines |
| BUSYL / BUSYR | Arbitration status (open-drain) | Outputs LOW when opposite port accesses same address; requires 270Ω pull-up to VCC |
| A0L–A10L / A0R–A10R | Address inputs (left/right) | 11-bit addressing for 2K-word space; tAA ≤ 100ns defines address setup window |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional data (left/right) | 8-bit parallel interface; VOL ≤ 0.4V at 4mA load ensures TTL logic compatibility |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Hardware-enforced conflict resolution prevents simultaneous writes to identical addresses without external logic |
| Open-drain BUSY outputs | Enables wired-OR expansion across multiple MASTER/SLAVE arrays without additional gates |
| 2V data retention (LA only) | Maintains memory contents during main power loss using backup battery or capacitor hold-up |
| Independent port power-down | CE-controlled standby reduces active port current to ISB2 ≤ 45mA (LA, commercial) when idle |
| TTL-compatible signaling | Operates directly with 5V microcontrollers and FPGAs without level translators or bus buffers |
Applications
| Real-Time Interprocessor Communication | Digital Signal Processor (DSP) Co-Processing |
|---|---|
Use Scenario: Two independent CPUs share sensor data and control commands via shared memory with deterministic latency. IC Role / Device Role / Timing Role: MASTER IDT7132LA100CB arbitrates concurrent access using BUSY outputs to prevent data corruption during simultaneous reads/writes. Use Value: Eliminates software semaphores and polling overhead, enabling sub-100ns arbitration response for hard real-time deadlines. |
Use Scenario: A DSP offloads FFT computation while a host MCU manages I/O and scheduling in a radar subsystem. IC Role / Device Role / Timing Role: Dual-port RAM serves as zero-wait-state buffer between DSP data memory and MCU peripheral registers. Use Value: Sustains 10MB/s sustained bandwidth (tRC = 100ns) without DMA stalls or pipeline bubbles. |
| Industrial PLC Memory Expansion | Battery-Backed Data Logging |
Use Scenario: Programmable logic controller expands I/O mapping table across multiple memory banks using MASTER/SLAVE configuration. IC Role / Device Role / Timing Role: IDT7132LA100CB acts as MASTER coordinating up to four IDT7142LA100CB SLAVE devices in 32-bit word-width systems. Use Value: Enables full-speed 16/32-bit memory access without discrete glue logic or timing skew compensation. |
Use Scenario: Energy meter retains tariff schedules and consumption history during AC mains failure. IC Role / Device Role / Timing Role: LA-series 2V data retention mode preserves 2KB of critical parameters using coin-cell backup. Use Value: Guarantees >10-year data retention at 2V with ICCDR ≤ 4000µA, eliminating supercapacitor aging concerns. |
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 CY7C136-100AXC | 5V 2K×8 dual-port with 100ns tRC but no integrated arbitration logic or BUSY outputs | Requires external priority encoder and BUSY gating logic for conflict resolution | Select when board space allows discrete arbitration circuitry and lower cost outweighs integration benefits |
| IDT7142LA100CB | SLAVE-only variant: BUSY pins are inputs (not outputs); no on-chip arbitration logic | Must be paired with IDT7132LA100CB MASTER to form functional dual-port system | Choose only as companion device in width-expanded memory configurations requiring >8-bit word width |
Compared with IDT7132LA100CB, CY7C136-100AXC lacks hardware arbitration-increasing BOM count and layout complexity-while IDT7142LA100CB serves exclusively as a SLAVE, making it non-substitutable without redesigning the MASTER/SLAVE topology.
Availability
IDT7132LA100CB is available at Aetrix Electronics and suitable for industrial automation, real-time control, and battery-backed data logging applications requiring stable component supply, long-term lifecycle support, and MIL-PRF-38535 QML-compliant manufacturing traceability.
Supply support for IDT7132LA100CB 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, acquired by Renesas Electronics in 2019.
IDT7132LA100CB belongs to the IDT7132/7142 dual-port SRAM family, designed specifically for deterministic interprocessor communication in industrial, military, and telecom infrastructure where hardware arbitration and data retention are mandatory.
FAQ
What is the maximum operating temperature range for IDT7132LA100CB?
IDT7132LA100CB is rated for industrial temperature operation from –40°C to +85°C, with full electrical specifications guaranteed across this range. It does not support military-grade –55°C to +125°C operation, which is reserved for IDT7132SA variants.
Does IDT7132LA100CB require external pull-up resistors on BUSY pins?
Yes, IDT7132LA100CB BUSYL and BUSYR are open-drain outputs and require 270Ω pull-up resistors to VCC per the manufacturer's recommendation. Failure to install these resistors will prevent proper BUSY signal assertion during arbitration events.
Can IDT7132LA100CB operate with a 3.3V supply?
No, IDT7132LA100CB is strictly a 5V ±10% device (4.5V–5.5V). It is not 3.3V tolerant, and applying 3.3V to VCC will result in undefined operation, excessive ISB3 current, and potential data retention failure below 4.5V.
How does the arbitration logic in IDT7132LA100CB resolve port conflicts?
IDT7132LA100CB uses address and chip-enable inputs-not R/W state-to detect simultaneous access to identical addresses. When conflict occurs, it asserts BUSYL or BUSYR within 50ns (tBAA), forcing the delayed port to stall until BUSY deasserts, ensuring deterministic write ordering.
Is IDT7132LA100CB pin-compatible with IDT7132SA100CB?
IDT7132LA100CB and IDT7132SA100CB share identical pinouts and package footprints (FP48), but differ in standby current (LA: 1mA ISB3 vs. SA: 5mA) and data retention (LA only supports 2V hold-up). They are electrically interchangeable in non-battery-backed designs.
7132LA100CB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-DIP (0.600", 15.24mm)
- 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:
- 100ns
- Access Time:
- 100 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 48-SIDE BRAZED
7132LA100CB FAQ
1.How can I place an order for 7132LA100CB through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132LA100CB 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 7132LA100CB reliable?
The price and inventory of 7132LA100CB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132LA100CB is usually 5 days.
3.What payment methods are accepted for 7132LA100CB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132LA100CB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132LA100CB?
7132LA100CB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132LA100CB 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 7132LA100CB?
For technical support, including 7132LA100CB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132LA100CB requirements.
6.How does Aetrix verify that 7132LA100CB is sourced from the original manufacturer or authorized distributors?
All 7132LA100CB 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 7132LA100CB meets industry standards.
7.What is the process for return or replacement of 7132LA100CB?
All 7132LA100CB units undergo pre-shipment inspection (PSI). If there is an issue with 7132LA100CB, 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 7132LA100CB part is unused and in its original packaging.
Return procedure for 7132LA100CB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7132LA100CB Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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AT24C04C-SSHM-T
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