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Renesas 7133SA55J
- Part No.:
- 7133SA55J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
7133SA55J.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,326
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Product details
Overview
7133SA55J from IDT (now Renesas) is a high-speed 2K × 16-bit dual-port SRAM with master arbitration logic, 55 ns maximum read cycle time, TTL-compatible 5V ±10% operation, and industrial temperature range (–40°C to +85°C). It enables simultaneous asynchronous access from two independent ports-used in real-time DSP co-processing, military avionics bus buffering, and redundant controller memory subsystems.
For engineers reviewing the 7133SA55J datasheet, 7133SA55J pinout, 7133SA55J application, or 7133SA55J equivalent, this page delivers verified timing specs (tRC = 55 ns), BUSY arbitration behavior, byte-select write control, battery backup capability (2V data retention), and exact 68-pin PLCC package mapping-critical for legacy system refresh and MIL-STD-883-compliant design-in.
Technical Context
The 7133SA55J implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention when both ports access the same memory location, asserting open-drain BUSYL/BUSYR flags to stall the losing port.
It supports independent byte-write enable (R/WLUB/R/WLLB and R/WRUB/R/WRLB), full TTL-level compatibility, and automatic power-down via CE-driven standby mode. The SA variant delivers 1150 mW typical active power and 5 mW standby-optimized for speed over ultra-low-power operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32,768 bits total); supports 16-bit parallel data paths per port without external multiplexing. |
| Read Cycle Time (tRC) | 55 ns max - defines minimum interval between successive reads; determines maximum sustained throughput of 18.2 MB/s per port. |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V) - compatible with legacy 5V TTL logic families; no level-shifting required in mixed-voltage systems. |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation controllers and transportation electronics. |
| Active Current (ICC) | 250 mA typ. at fMAX - informs thermal design and power supply sizing; correlates directly with 55 ns speed grade. |
| Data Retention | 2 V minimum VCC - enables battery-backed operation during main power loss; retains data without refresh for extended periods. |
| Package | 68-pin PLCC (PLG68) - surface-mount compatible with standard reflow profiles; footprint matches IDT7143SA55J for drop-in width expansion. |
Pinout & Package
68-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 0.95″ × 0.95″ × 0.17″, lead pitch 0.05″, RoHS-compliant green variant available.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L / A0R–A10R | Address Inputs (Left/Right Port) | 11-bit address per port selects one of 2K locations; independent addressing enables true concurrent access to different memory regions. |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data Bus (Left/Right Port) | 16-bit parallel I/O per port; high-impedance tri-state during unselected operations prevents bus contention. |
| CEL / CER | Chip Enable (Left/Right Port) | Active-low enables port access; drives internal circuitry into low-power standby (ISB1 ≤ 25 mA) when deasserted. |
| R/WLUB / R/WRUB | Upper Byte Write Enable (Left/Right) | Controls write to I/O8–I/O15 only; enables partial writes without disturbing lower byte-critical for protocol header updates. |
| R/WLLB / R/WRLB | Lower Byte Write Enable (Left/Right) | Controls write to I/O0–I/O7 only; allows atomic 8-bit register updates in embedded control applications. |
| OEL / OER | Output Enable (Left/Right) | Tri-states I/O pins independently of CE; permits output gating while maintaining internal state and power mode. |
| BUSYL / BUSYR | Busy Flag (Left/Right) | Open-drain output (7133) or input (7143); signals arbitration result-must be pulled up externally on master side. |
| VCC (Pins 17, 51) | Power Supply | Both pins must be connected to 5V supply; decoupling required at each pin to maintain signal integrity under fast switching. |
| GND (Pins 36, 68) | Ground Reference | Both pins must be connected to system ground; ensures stable reference for TTL-level thresholds and reduces ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip port arbitration logic | Resolves simultaneous same-address access without external logic; eliminates risk of data corruption in dual-CPU systems. |
| Separate upper/lower byte write control | Enables 8-bit atomic writes to 16-bit memory-mapped peripherals-essential for CAN, SPI, or UART register interfaces. |
| Master/Slave expandability | One 7133SA55J (MASTER) + multiple 7143SA55J (SLAVE) units scale data width to 32/48/64 bits with synchronized BUSY signaling. |
| 2V data retention mode | Maintains stored contents during brown-out or battery-backup operation-supports fail-safe state preservation in safety-critical systems. |
| TTL-compatible I/O | Direct interface with legacy microcontrollers (e.g., Intel 80C188, Motorola 683xx) and FPGAs without level translators or bus buffers. |
Applications
| Real-Time DSP Co-Processing | Military Avionics Bus Buffering |
|---|---|
|
Use Scenario: Dual-core radar signal processor sharing frame buffers with deterministic latency. IC Role / Device Role / Timing Role: 7133SA55J acts as shared memory conduit between DSP and host CPU; BUSY arbitration prevents race conditions during FFT coefficient updates. Use Value: 55 ns tRC enables sub-100 ns inter-processor handshaking; 2K × 16 capacity accommodates 1024-sample complex FFT buffers per channel. |
Use Scenario: ARINC 429 or MIL-STD-1553B bus interface module requiring fault-tolerant message queuing. IC Role / Device Role / Timing Role: 7133SA55J serves as dual-port FIFO buffer-left port receives serial bus data, right port feeds flight control processor. Use Value: Independent CE/OE control per port allows overlapping receive/transmit cycles; industrial temp rating ensures reliability in cockpit electronics. |
| Redundant Controller Memory Subsystem | Industrial PLC I/O Mapping |
|
Use Scenario: Hot-standby programmable logic controller with mirrored program memory and status registers. IC Role / Device Role / Timing Role: 7133SA55J stores configuration and runtime variables; master arbitration ensures consistent state during switchover. Use Value: Battery backup (2V retention) preserves critical state across power cycles; 68-pin PLCC supports long-term obsolescence management. |
Use Scenario: Modular PLC backplane where local I/O modules require isolated memory-mapped register banks. IC Role / Device Role / Timing Role: 7133SA55J provides dedicated 16-bit register space per slot; byte-write enables atomic bit-field updates to digital I/O control words. Use Value: Separate R/WLUB/R/WLLB enables single-cycle set/clear of individual outputs without read-modify-write overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT7143SA55J | SLAVE-only variant; BUSY pins are inputs only; no on-chip arbitration logic; identical timing and pinout. | Used exclusively in width-expansion configurations with a 7133SA55J master; cannot operate stand-alone as a dual-port arbitrator. | Select when building 32+ bit memory systems-requires pairing with 7133SA55J and external BUSY routing. |
| Cypress CY7C1371DV33-55AC | 3.3V core, LVCMOS I/O; 55 ns tRC; 2K × 16; no built-in arbitration; requires external logic for BUSY handling. | Suitable for modern 3.3V systems but lacks native arbitration-adds complexity and board area vs. 7133SA55J's integrated solution. | Choose only if migrating to 3.3V infrastructure; verify external arbitration circuit meets timing constraints (tAPS ≥ 5 ns). |
Compared with IDT7143SA55J and CY7C1371DV33-55AC, the 7133SA55J uniquely integrates master arbitration logic and 5V TTL compatibility-enabling standalone dual-CPU memory sharing without external glue logic or voltage translation.
Availability
7133SA55J is available at Aetrix Electronics and suitable for real-time DSP co-processing, military avionics bus buffering, and redundant controller memory subsystems requiring stable component supply across extended product lifecycles.
Supply support for 7133SA55J 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), now part of Renesas Electronics, is a semiconductor company specializing in high-performance memory, timing, and interface solutions for communications, computing, and industrial markets.
The IDT7133 family was designed specifically for deterministic dual-processor memory sharing in aerospace, defense, and industrial control-emphasizing hardware arbitration, 5V robustness, and MIL-PRF-38535 QML compliance.
FAQ
What is the maximum operating temperature range for the 7133SA55J?
The 7133SA55J is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the Absolute Maximum Ratings table and supported by DC/AC electrical characteristics tested across that range. The 7133SA55J does not support military-grade –55°C to +125°C operation-that requires the 7133SA55J-MQ variant.
Does the 7133SA55J include on-chip arbitration logic?
Yes, the 7133SA55J includes dedicated on-chip arbitration logic-exclusive to the IDT7133 series (MASTER devices). This logic detects same-address contention between ports and asserts BUSYL/BUSYR to stall the losing port. The SLAVE IDT7143SA55J omits this logic and uses BUSY as an input only.
What package type is used for the 7133SA55J?
The 7133SA55J is supplied in a 68-pin Plastic Leaded Chip Carrier (PLCC), designated PLG68. Pin layout matches IDT7143SA55J, enabling mechanical and electrical compatibility in MASTER/SLAVE width-expansion designs. Footprint dimensions are approximately 0.95″ × 0.95″ × 0.17″.
Can the 7133SA55J retain data at voltages below 5V?
Yes-the 7133SA55J supports data retention down to 2.0 V VCC, as specified in Table 8 (Data Retention Characteristics). This enables battery backup operation during main power failure. Retention current is 100 µA typical at 25°C, allowing multi-year hold-up with small lithium cells.
How does byte-write control work on the 7133SA55J?
The 7133SA55J provides independent upper- and lower-byte write enables: R/WLUB/R/WLLB for the left port and R/WRUB/R/WRLB for the right port. Asserting only R/WLUB writes to I/O8–I/O15; asserting only R/WLLB writes to I/O0–I/O7-enabling atomic 8-bit updates without read-modify-write sequences.
7133SA55J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 32Kbit
- Memory Organization:
- 2K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 68-PLCC (24.21x24.21)
7133SA55J FAQ
1.How can I place an order for 7133SA55J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133SA55J 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 7133SA55J reliable?
The price and inventory of 7133SA55J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133SA55J is usually 5 days.
3.What payment methods are accepted for 7133SA55J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133SA55J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133SA55J?
7133SA55J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133SA55J 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 7133SA55J?
For technical support, including 7133SA55J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133SA55J requirements.
6.How does Aetrix verify that 7133SA55J is sourced from the original manufacturer or authorized distributors?
All 7133SA55J 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 7133SA55J meets industry standards.
7.What is the process for return or replacement of 7133SA55J?
All 7133SA55J units undergo pre-shipment inspection (PSI). If there is an issue with 7133SA55J, 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 7133SA55J part is unused and in its original packaging.
Return procedure for 7133SA55J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133SA55J Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
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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
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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
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