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Renesas 7132SA55JI8
- Part No.:
- 7132SA55JI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132SA55JI8.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,490
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Product details
Overview
7132SA55JI8 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), 55 ns max read/write cycle time, TTL-compatible 5V ±10% supply, and industrial temperature range (–40°C to +85°C). It enables full-speed 16-bit-or-wider memory expansion when paired with IDT7142 SLAVE devices in real-time embedded control systems.
For engineers reviewing the 7132SA55JI8 datasheet, 7132SA55JI8 pinout, 7132SA55JI8 application, or 7132SA55JI8 equivalent, this page delivers verified timing parameters, BUSY arbitration behavior, industrial-grade DC/AC specs, package-specific pin mapping (48-pin flatpack), and validated alternative part selection guidance for dual-port SRAM design-in.
Technical Context
The 7132SA55JI8 implements independent left/right port access with separate address, control, and I/O buses, supporting asynchronous concurrent reads/writes to any memory location. Its on-chip arbitration logic resolves port contention via BUSY assertion based on chip enable and address match timing - not R/W state - ensuring deterministic priority resolution.
As a MASTER device, it features two open-drain BUSY outputs (BUSYL, BUSYR) requiring 270Ω pull-up resistors; these signals inhibit writes on corresponding ports when asserted low. The device supports battery backup data retention only in LA variants - not applicable to this SA-grade part.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 8 (2048 words × 8 bits), 16,384 total bits |
| Access Time (max) | 55 ns - defines minimum read/write cycle time for reliable operation at full speed |
| Supply Voltage | 5.0 V ±10% - requires single TTL-compatible rail; all VCC pins must be connected |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Standby Current (ISB1) | 20 mA max (both ports TTL-level standby) - determines power budget during idle periods |
| Dynamic Current (ICC) | 65 mA typ (both ports active, f = fMAX) - sets thermal and decoupling requirements |
| BUSY Output Type | Open-drain - mandates external 270Ω pull-up for proper logic level and timing compliance |
Pinout & Package
7132SA55JI8 is packaged in a 48-lead flatpack (FP48), body size ≈ 0.75 in × 0.75 in × 0.11 in, with gull-wing leads and index mark. All VCC and GND pins must be externally connected per datasheet note.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Must be connected to system ground plane; both pins required for noise immunity |
| VCC (Pin 25) | Power supply | 5.0 V ±10% input; decoupling capacitor required within 1 cm |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables respective port; controls power-down mode when high |
| OEL / OER | Output Enable (Left/Right) | Active-low enables I/O drivers; high-Z when deasserted |
| R/WL / R/WR | Read/Write Control (Left/Right) | High = read, low = write; must be stable during address transitions |
| BUSYL / BUSYR | BUSY Flag (Left/Right) | Open-drain outputs - require 270Ω pull-up; assert low during port contention |
| A0L–A10L / A0R–A10R | Address Inputs (Left/Right) | 11-bit address bus per port; supports full 2K addressing independently |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (Left/Right) | Bidirectional 8-bit data bus per port; high-impedance when CE or OE inactive |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access to same address without external logic; uses CE + address match (not R/W) for priority decision |
| Master-only BUSY outputs | BUSYL/BUSYR are open-drain flags that stall conflicting writes - eliminates need for external AND gates in width-expanded arrays |
| Independent port power control | Each port enters low-power standby (ISB1–ISB4) when its CE = VIH, enabling selective power gating in multi-port systems |
| TTL-compatible interface | Direct connection to 5V logic families without level shifters; VIH = 2.2 V min, VIL = 0.8 V max |
| Industrial temperature qualification | Guaranteed operation from –40°C to +85°C across all AC/DC specs - suitable for factory automation and transportation electronics |
Applications
| Real-Time Motion Control | Digital Signal Processor Interface |
|---|---|
|
Use Scenario: Dual-axis servo controller synchronizing position updates between FPGA motion planner and microcontroller-based safety monitor. IC Role / Device Role / Timing Role: MASTER 7132SA55JI8 provides shared memory buffer with hardware arbitration, allowing concurrent read/write access without software locks or CPU intervention. Use Value: 55 ns access enables sub-10 µs inter-processor handshaking; BUSY logic prevents race conditions during simultaneous axis command updates. |
Use Scenario: Offloading FFT coefficient storage from DSP core to dedicated memory during high-throughput spectral analysis. IC Role / Device Role / Timing Role: 7132SA55JI8 acts as dual-access scratchpad - DSP writes new coefficients while host processor reads prior results - both at full speed. Use Value: Independent left/right ports eliminate pipeline stalls; 2K × 8 capacity supports 1024-point complex FFT buffers with headroom for metadata. |
| Redundant Communication Controller | Industrial PLC I/O Mapping |
|
Use Scenario: Hot-standby Ethernet controller pair sharing status registers and packet buffers in safety-critical network infrastructure. IC Role / Device Role / Timing Role: MASTER 7132SA55JI8 stores configuration and link state; BUSY signals coordinate failover writes to prevent inconsistent register snapshots. Use Value: Deterministic arbitration ensures only one controller updates shared registers at a time - eliminating metastability risks in dual-CPU redundancy schemes. |
Use Scenario: Mapping discrete sensor inputs and actuator outputs across two independent PLC scan cycles running at different priorities. IC Role / Device Role / Timing Role: 7132SA55JI8 serves as synchronized I/O image memory - high-priority task reads sensor data while low-priority task writes actuator commands. Use Value: Concurrent access avoids scan-cycle jitter; industrial temp rating ensures reliability in uncooled control cabinets with ambient swings up to 85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C133-55JC | 55 ns access, 2K × 8, but no built-in BUSY arbitration - requires external logic for contention management | Suitable for simpler dual-CPU systems where software coordination replaces hardware arbitration | Select when cost sensitivity outweighs need for guaranteed hardware-level conflict resolution |
| IDT7142SA55JI8 | SLAVE variant - BUSY pins are inputs only; lacks on-chip arbitration logic and master BUSY generation | Used exclusively with IDT7132 in width-expanded configurations (e.g., 16-bit data bus) | Choose only as companion to 7132SA55JI8 in multi-SRAM systems - not standalone replacement |
Compared with CY7C133-55JC and IDT7142SA55JI8, the 7132SA55JI8 uniquely integrates master arbitration and open-drain BUSY signaling - eliminating external glue logic for real-time deterministic access, whereas alternatives either require added components or serve only as slaves in hierarchical memory topologies.
Availability
7132SA55JI8 is available at Aetrix Electronics and suitable for real-time motion control, industrial PLC I/O mapping, redundant communication controllers, and digital signal processor interfaces requiring stable component supply across extended product lifecycles.
Supply support for 7132SA55JI8 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 semiconductor company specializing in timing, memory interface, and RF solutions, now part of Renesas Electronics.
The IDT7132/7142 family was designed for deterministic dual-processor memory sharing in industrial, military, and telecom systems - prioritizing hardware arbitration, low-latency access, and robust temperature performance over density or cost.
FAQ
What is the maximum operating temperature range for the 7132SA55JI8?
The 7132SA55JI8 is rated for industrial temperature operation from –40°C to +85°C across all specified DC and AC electrical characteristics. This range is guaranteed per MIL-PRF-38535 QML-compliant testing and applies to the FP48 flatpack package used in this variant. No derating is required within this envelope.
Does the 7132SA55JI8 support battery backup data retention?
No, the 7132SA55JI8 does not support battery backup data retention. That feature is exclusive to LA-grade variants (e.g., 7132LA55JI8), which specify 2V data retention capability. The 'SA' suffix denotes standard active power consumption and excludes the low-leakage design needed for battery operation.
How should the BUSY outputs on the 7132SA55JI8 be terminated?
The BUSYL and BUSYR pins on the 7132SA55JI8 are open-drain outputs and must be pulled up to VCC using 270Ω resistors, as explicitly specified in the datasheet notes. Failure to use this value may violate timing margins for BUSY assertion/deassertion and cause incorrect arbitration behavior in width-expanded systems.
Can the 7132SA55JI8 operate with only one port enabled?
Yes, the 7132SA55JI8 supports independent port operation: either left or right port can be fully functional while the other remains in standby (CE = VIH). In single-port mode, ISB2 current (40 mA max) applies, and BUSY logic remains inactive since contention requires both ports accessing the same address.
What package type is used for the 7132SA55JI8?
The 7132SA55JI8 uses a 48-lead flatpack (FP48) package with dimensions approximately 0.75 in × 0.75 in × 0.11 in. This hermetically sealed ceramic package is specified for industrial and military applications and differs from DIP, LCC, or PLCC variants in thermal performance and lead geometry.
7132SA55JI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- 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)
7132SA55JI8 FAQ
1.How can I place an order for 7132SA55JI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132SA55JI8 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 7132SA55JI8 reliable?
The price and inventory of 7132SA55JI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132SA55JI8 is usually 5 days.
3.What payment methods are accepted for 7132SA55JI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132SA55JI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132SA55JI8?
7132SA55JI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132SA55JI8 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 7132SA55JI8?
For technical support, including 7132SA55JI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132SA55JI8 requirements.
6.How does Aetrix verify that 7132SA55JI8 is sourced from the original manufacturer or authorized distributors?
All 7132SA55JI8 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 7132SA55JI8 meets industry standards.
7.What is the process for return or replacement of 7132SA55JI8?
All 7132SA55JI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7132SA55JI8, 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 7132SA55JI8 part is unused and in its original packaging.
Return procedure for 7132SA55JI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7132SA55JI8 Tags
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