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Renesas 7132SA55JI
- Part No.:
- 7132SA55JI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132SA55JI.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,416
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Product details
Overview
IDT7132SA55JI 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 55 ns maximum read/write cycle time. It operates at 5V ±10%, supports industrial temperature range (–40°C to +85°C), and is packaged in a 48-pin flatpack for use in real-time data buffering, military-grade avionics interprocessor communication, and redundant control systems.
For engineers reviewing the 7132SA55JI datasheet, 7132SA55JI pinout, 7132SA55JI application, or 7132SA55JI equivalent, this page delivers verified timing parameters, validated port arbitration behavior, confirmed BUSY open-drain drive requirements (270 Ω pull-up), exact industrial-grade DC/AC specs, and direct alternative part comparisons - all specific to the 7132SA55JI variant.
Technical Context
The 7132SA55JI implements independent left/right asynchronous ports with separate address (A0–A10), control (CEL/CER, OEL/OER, R/WL/R/WR), and I/O (I/O0–I/O7) lines. Its on-chip arbitration logic resolves simultaneous access to identical memory locations by asserting BUSYL/BUSYR outputs - open-drain signals requiring external 270 Ω pull-ups per datasheet Note 1.
As a MASTER-only device, it provides BUSY outputs (not inputs), enables width expansion with IDT7142 SLAVE devices, and guarantees tBDD ≤ 35 ns (BUSY disable to valid data) and tWDD ≤ 60 ns (write pulse to data delay) under industrial conditions. It does not support battery backup - that function is exclusive to LA variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 8 (2048 words × 8 bits), fully random-access dual-port SRAM |
| Max Read/Write Cycle Time | 55 ns - defines minimum time between successive read or write operations on same port |
| Operating Voltage | 5.0 V ±10% - requires single TTL-compatible supply; all VCC pins must be connected |
| Temperature Range | –40°C to +85°C - qualified for industrial applications per datasheet Table 2 |
| Active Current (ICC) | 155 mA max (typ. 65 mA) - dynamic current with both ports active at fMAX |
| Standby Current (ISB1) | 65 mA max (typ. 20 mA) - TTL-level standby with both CE inputs high |
| BUSY Output Type | Open-drain - requires external 270 Ω pull-up resistor per datasheet Note 1 & Figure 3 |
Pinout & Package
7132SA55JI is supplied in a 48-lead flatpack (FP48) package with 0.75″ × 0.75″ × 0.11″ body dimensions per datasheet Note 3. All VCC and GND pins must be externally connected per Note 1–2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Two dedicated ground pins required for noise immunity and power integrity |
| VCC (Pin 25) | Power supply | Single 5V ±10% supply; all VCC pins must be connected per datasheet Note 1 |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; controls automatic power-down mode when high |
| OEL / OER | Output enable (left/right) | Active-low enables I/O drivers; high-Z state when disabled |
| R/WL / R/WR | Read/write control (left/right) | High = read, low = write; determines direction of data flow on I/O bus |
| BUSYL / BUSYR | BUSY flag (left/right) | Open-drain outputs indicating port contention; require 270 Ω pull-up per Note 1 |
| A0L–A10L / A0R–A10R | Address inputs (left/right) | 11-bit address buses selecting one of 2048 memory locations per port |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (left/right) | Bi-directional 8-bit data paths; high-impedance when OE or CE inactive |
Key Features
| Feature | Design Value |
|---|---|
| On-chip port arbitration logic | Resolves simultaneous access to identical addresses without external logic; asserts BUSY within 30 ns (tBAA) to stall conflicting writes |
| Master-only BUSY output architecture | Enables scalable width expansion with IDT7142 SLAVE parts; eliminates need for external AND gates in multi-SRAM arrays |
| 55 ns guaranteed cycle time | Supports real-time deterministic memory access in industrial control loops with ≤55 ns latency bound |
| TTL-compatible 5V operation | Direct interface with legacy microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
| Industrial temperature qualification | Validated for –40°C to +85°C ambient operation per MIL-PRF-38535 QML-compliant manufacturing |
Applications
| Avionics Interprocessor Communication | Redundant Control Systems |
|---|---|
Use Scenario: Dual-core flight control computers exchange sensor fusion data via shared memory with strict determinism and no software arbitration overhead. IC Role / Device Role / Timing Role: MASTER dual-port SRAM providing atomic read/write access with hardware BUSY signaling to prevent race conditions during concurrent updates. Use Value: Eliminates CPU intervention for memory coherency; 55 ns cycle time ensures sub-100 ns worst-case inter-core latency. |
Use Scenario: Primary and backup PLC controllers maintain synchronized state tables using mirrored memory regions accessible from both sides. IC Role / Device Role / Timing Role: Industrial-grade 7132SA55JI acts as fault-tolerant shared buffer with built-in contention detection via BUSYL/BUSYR flags. Use Value: Prevents inconsistent state writes during failover; –40°C to +85°C rating ensures reliability in uncontrolled cabinet environments. |
| Military Radar Signal Processing | Real-Time Test Equipment |
Use Scenario: High-speed ADC front-end streams digitized RF samples into memory while DSP core performs FFT analysis - both accessing same buffer. IC Role / Device Role / Timing Role: Dual-port SRAM serving as zero-wait-state ping-pong buffer with independent left/right timing domains. Use Value: 55 ns access enables >18 MS/s sustained throughput; open-drain BUSY outputs interface directly with FPGA interrupt controllers. |
Use Scenario: Automated test system captures DUT response waveforms and concurrently streams results to host PC via DMA engine. IC Role / Device Role / Timing Role: MASTER SRAM buffers high-speed acquisition data while host interface reads completed frames without stalling acquisition. Use Value: Eliminates FIFO overflow risk; industrial temp rating supports operation in factory-floor environmental chambers. |
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 | 55 ns access, 2K × 8, but uses push-pull BUSY outputs (no pull-up required); no MIL-PRF-38535 compliance | Commercial/industrial only; lacks military-grade screening and extended temperature validation | Select if board space allows different pull-up scheme and QML compliance is not required |
| IDT7142SA55JI | Same speed and organization, but SLAVE-only: BUSY pins are inputs (not outputs); no on-chip arbitration logic | Must be paired with 7132SA55JI in MASTER/SLAVE configuration; cannot operate standalone as MASTER | Use only as companion SLAVE in width-expanded systems; not a functional replacement for 7132SA55JI |
Compared with CY7C136-55JC, 7132SA55JI provides QML-qualified reliability and open-drain BUSY for direct FPGA interrupt integration, whereas CY7C136-55JC simplifies BOM with internal pull-up. IDT7142SA55JI is not a drop-in substitute - it lacks MASTER arbitration and requires explicit BUSY input routing.
Availability
7132SA55JI is available at Aetrix Electronics and suitable for avionics interprocessor communication, redundant control systems, and military radar signal processing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 7132SA55JI 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.
The IDT7132 family was designed specifically for deterministic dual-ported memory applications in aerospace, defense, and industrial control - emphasizing hardware arbitration, industrial/military temperature resilience, and seamless width expansion capability.
FAQ
What is the maximum operating temperature range certified for the 7132SA55JI?
The 7132SA55JI is qualified for industrial temperature operation from –40°C to +85°C, as specified in the "Recommended Operating Temperature and Supply Voltage" table (datasheet p.4). This rating is validated per MIL-PRF-38535 QML requirements, distinguishing it from commercial-grade variants limited to 0°C to +70°C.
Does the 7132SA55JI support battery backup for data retention?
No, the 7132SA55JI does not support battery backup. Data retention capability (down to 2V) is exclusive to LA variants (e.g., 7132LA55JI) per datasheet Section "Data Retention Characteristics (LA Version Only)". The 'SA' suffix denotes standard active power profile without retention mode.
Why does the 7132SA55JI require a 270 Ω pull-up resistor on BUSY pins?
The BUSYL and BUSYR pins on the 7132SA55JI are open-drain outputs, as explicitly stated in datasheet Note 1 and Figure 3. A 270 Ω pull-up to VCC is mandatory to establish valid HIGH logic levels during non-contention periods; omission causes BUSY signals to float and break arbitration functionality.
Can the 7132SA55JI be used as a standalone dual-port RAM without a SLAVE device?
Yes, the 7132SA55JI functions fully as a standalone 2K × 8 dual-port SRAM. Its MASTER arbitration logic and BUSY outputs operate independently - SLAVE pairing (e.g., with 7142SA55JI) is optional and only required when expanding data bus width beyond 8 bits.
What is the meaning of '55' in the part number 7132SA55JI?
The '55' in 7132SA55JI specifies the maximum read/write cycle time rating: 55 ns. This value appears consistently across AC Electrical Characteristics tables (e.g., datasheet p.8, tbl 08b) and defines the speed grade - distinct from 20 ns, 25 ns, 35 ns, and 100 ns variants in the same family.
7132SA55JI 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:
- 55ns
- Access Time:
- 55 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)
7132SA55JI FAQ
1.How can I place an order for 7132SA55JI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132SA55JI 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 7132SA55JI reliable?
The price and inventory of 7132SA55JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132SA55JI is usually 5 days.
3.What payment methods are accepted for 7132SA55JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132SA55JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132SA55JI?
7132SA55JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132SA55JI 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 7132SA55JI?
For technical support, including 7132SA55JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132SA55JI requirements.
6.How does Aetrix verify that 7132SA55JI is sourced from the original manufacturer or authorized distributors?
All 7132SA55JI 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 7132SA55JI meets industry standards.
7.What is the process for return or replacement of 7132SA55JI?
All 7132SA55JI units undergo pre-shipment inspection (PSI). If there is an issue with 7132SA55JI, 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 7132SA55JI part is unused and in its original packaging.
Return procedure for 7132SA55JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7132SA55JI Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
Microchip Technology
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