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Renesas 7133SA55GB
- Part No.:
- 7133SA55GB
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-BPGA
- Datasheet:
-
7133SA55GB.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 68PGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,145
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Product details
Overview
7133SA55GB from IDT is a high-speed 2K × 16 dual-port static RAM with master arbitration logic, 55 ns max read cycle time, TTL-compatible 5V ±10% operation, and industrial temperature range (–40°C to +85°C). It enables simultaneous asynchronous access from left/right ports in real-time control systems requiring deterministic memory contention resolution.
For engineers reviewing the 7133SA55GB datasheet, 7133SA55GB pinout, 7133SA55GB application, or 7133SA55GB equivalent, this page delivers verified timing specs, BUSY arbitration behavior, byte-select write control, power-down modes, and master/slave expansion compatibility - all confirmed for the exact 7133SA55GB variant.
Technical Context
The 7133SA55GB implements on-chip port arbitration logic exclusively in MASTER mode, generating open-drain BUSYL/BUSYR outputs that require external pull-up resistors. Its dual independent ports support fully asynchronous reads/writes with separate CE, R/W, OE, and address buses per side.
It supports byte-level write control via R/WLUB/R/WLLB (left) and R/WRUB/R/WRLB (right), enabling 8-bit granularity writes without masking logic. The device enters low-power standby (<5 mW typ.) when both chip enables are deasserted, retaining data down to 2V in LA variants - though 7133SA55GB is SA-grade and does not support battery retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32,768 bits total); supports independent 16-bit word access per port |
| Max Read Cycle Time | 55 ns - defines minimum interval between successive read operations on same port |
| Supply Voltage | 5.0 V ±10% - requires dual VCC pins connected; incompatible with 3.3V or mixed-voltage systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments; not rated for military (–55°C to +125°C) |
| Active Power (typ.) | 1150 mW - measured at fMAX with both ports active; impacts thermal design in dense PCB layouts |
| Standby Current (typ.) | 5 mW - achieved when both CEL and CER = VIH; enables rapid wake-up without data loss |
| Arbitration Logic | On-chip MASTER-only - resolves port-to-port address contention and asserts BUSY flags; SLAVE mode requires IDT7143 |
Pinout & Package
7133SA55GB is packaged in a 68-pin PLCC (PLG68), with dual VCC and GND pins requiring mandatory connection for reliable operation. Pin layout supports symmetrical left/right port I/O mapping and dedicated BUSY signaling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low enable controlling port power state; drives standby mode when high |
| R/WLUB / R/WRUB | Upper Byte Write Enable (L/R) | Selects I/O8–I/O15 for write; allows partial-word updates without external byte masking |
| R/WLLB / R/WRLB | Lower Byte Write Enable (L/R) | Selects I/O0–I/O7 for write; enables 8-bit granularity writes per port |
| OEL / OER | Output Enable (Left / Right) | Controls I/O drivers' output state; high-impedance when deasserted during writes |
| BUSYL / BUSYR | Busy Flag (Open-Drain Output) | Indicates port contention; requires external pull-up; used for hardware stall or interrupt generation |
| A0L–A10L / A0R–A10R | Address Inputs (L/R) | 11-bit address bus per port; accesses full 2K depth (0–2047) independently |
| I/O0L–I/O15L / I/O0R–I/O15R | Data I/O (L/R) | 16-bit bidirectional data bus per port; shares pins for read/write; no direction control needed |
Key Features
| Feature | Design Value |
|---|---|
| On-chip MASTER arbitration logic | Resolves simultaneous same-address access deterministically; eliminates need for external priority encoder or glue logic |
| Separate upper/lower byte write control | Enables atomic 8-bit writes per port without read-modify-write cycles or external byte-enable gating |
| Asynchronous dual-port operation | Permits independent, unsynchronized read/write sequences on left/right ports - critical for real-time inter-processor communication |
| Open-drain BUSY outputs with pull-up requirement | Allows wired-OR of multiple BUSY signals for system-level contention detection and interrupt assertion |
| Full 5V TTL compatibility | Interfaces directly with legacy 5V microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
Applications
| Industrial Motion Controller | Avionics Data Buffer |
|---|---|
|
Use Scenario: Two independent DSPs exchange position and velocity data in real time while sharing a common motion profile table. IC Role / Device Role / Timing Role: 7133SA55GB acts as deterministic shared memory with hardware arbitration, preventing race conditions during concurrent read/write to trajectory buffers. Use Value: Eliminates software semaphore overhead and guarantees sub-55 ns memory access latency for closed-loop servo updates. |
Use Scenario: Flight management unit (FMU) and display processor access overlapping navigation parameter tables during flight phase transitions. IC Role / Device Role / Timing Role: 7133SA55GB serves as fault-tolerant dual-access buffer; BUSY flag stalls display writes during FMU parameter updates. Use Value: Ensures data coherency without CPU intervention, meeting DO-254 Level A timing assurance requirements. |
| Telecom Line Card | Medical Imaging Pipeline |
|
Use Scenario: Packet processor and network controller simultaneously access packet descriptor queues in a 10G line card. IC Role / Device Role / Timing Role: 7133SA55GB provides non-blocking descriptor exchange with byte-select writes for header/metadata updates. Use Value: Sustains 18 Mwords/s aggregate throughput (per port) with zero-cycle arbitration delay under contention. |
Use Scenario: MRI reconstruction engine and display subsystem concurrently read/write pixel intensity buffers during real-time image rendering. IC Role / Device Role / Timing Role: 7133SA55GB functions as low-latency frame buffer with deterministic BUSY-driven stall for safe multi-threaded access. Use Value: Guarantees <55 ns pixel data fetch latency and prevents corrupted frame assembly during parallel processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT7143SA55GB | SLAVE-only variant; BUSY pins are inputs (not outputs); no on-chip arbitration logic | Requires pairing with 7133SA55GB for 32-bit+ bus expansion; cannot operate standalone as MASTER | Select only when building width-expanded systems where one 7133SA55GB coordinates multiple 7143SA55GB slaves |
| Cypress CY7C136-55JC | 55 ns, 2K × 16, but lacks built-in BUSY arbitration; uses external semaphore or software coordination | Suitable for simpler dual-CPU systems without strict hardware-enforced contention resolution | Choose when cost sensitivity outweighs need for deterministic hardware arbitration; requires additional control logic |
Compared with IDT7143SA55GB and CY7C136-55JC, the 7133SA55GB uniquely integrates MASTER arbitration logic and open-drain BUSY outputs - enabling single-chip deterministic contention handling without external components or software overhead.
Availability
7133SA55GB is available at Aetrix Electronics and suitable for industrial motion control, avionics data buffering, and telecom line card designs requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.
Supply support for 7133SA55GB 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 IDT7133 family was designed specifically for real-time embedded systems requiring deterministic dual-ported memory access with hardware arbitration - targeting industrial automation, aerospace, and communications infrastructure.
FAQ
What is the function of the BUSY pin on the 7133SA55GB?
The BUSY pin on the 7133SA55GB is an open-drain output that signals port contention when both left and right ports attempt simultaneous access to the same memory address. It must be externally pulled up and can stall the contending port's write operation or serve as an interrupt source. This logic is exclusive to the MASTER 7133 variant and is not present in SLAVE devices like the 7143SA55GB.
Does the 7133SA55GB support battery backup data retention?
No, the 7133SA55GB does not support battery backup data retention. It belongs to the SA (Standard Active) power grade, which consumes 1150 mW typical active power and 5 mW typical standby power. Battery retention (2V operation) is only available in LA-grade variants such as 7133LA55GB - the 'SA' suffix explicitly denotes standard power, not low-power retention capability.
Can the 7133SA55GB operate with a 3.3V supply?
No, the 7133SA55GB requires a 5.0 V ±10% supply (4.5 V to 5.5 V) and is TTL-compatible only. It is not 3.3V tolerant: applying 3.3V violates the specified VCC min of 4.5V and will result in undefined operation, failed reads/writes, or potential damage. Level-shifting circuitry is required for interfacing with 3.3V controllers.
How does the 7133SA55GB handle simultaneous writes to the same address from both ports?
The 7133SA55GB uses on-chip arbitration logic to resolve simultaneous same-address writes: the port asserting its chip enable (CE) first wins, while the other port's BUSY pin is asserted to inhibit its write. This hardware-enforced priority eliminates race conditions and ensures deterministic behavior without software coordination - a core differentiator from non-arbitrated dual-port SRAMs.
What package type is used for the 7133SA55GB?
The 7133SA55GB is supplied in a 68-pin plastic leaded chip carrier (PLCC), designated PLG68. This package features a 0.95 inch × 0.95 inch body with J-leads, requires solder reflow per JEDEC J-STD-020, and mandates connection of both VCC and GND pins for stable operation as specified in the official IDT datasheet.
7133SA55GB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-BPGA
- 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:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 68-PGA (29.46x29.46)
7133SA55GB FAQ
1.How can I place an order for 7133SA55GB through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133SA55GB 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 7133SA55GB reliable?
The price and inventory of 7133SA55GB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133SA55GB is usually 5 days.
3.What payment methods are accepted for 7133SA55GB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133SA55GB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133SA55GB?
7133SA55GB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133SA55GB 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 7133SA55GB?
For technical support, including 7133SA55GB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133SA55GB requirements.
6.How does Aetrix verify that 7133SA55GB is sourced from the original manufacturer or authorized distributors?
All 7133SA55GB 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 7133SA55GB meets industry standards.
7.What is the process for return or replacement of 7133SA55GB?
All 7133SA55GB units undergo pre-shipment inspection (PSI). If there is an issue with 7133SA55GB, 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 7133SA55GB part is unused and in its original packaging.
Return procedure for 7133SA55GB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133SA55GB Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
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