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Renesas 7133SA25PF8
- Part No.:
- 7133SA25PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7133SA25PF8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,452
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Product details
Overview
7133SA25PF8 from IDT is a high-speed 2K × 16 dual-port static RAM with master arbitration logic, 25ns max access time (commercial/industrial), TTL-compatible 5V ±10% operation, and on-chip BUSY output for port contention resolution - used in real-time embedded systems requiring simultaneous CPU/DSP memory access.
For engineers reviewing the 7133SA25PF8 datasheet, 7133SA25PF8 pinout, 7133SA25PF8 application, or 7133SA25PF8 equivalent, this page delivers verified timing specs, byte-select write control, battery backup capability (2V data retention), and MASTER/SLAVE expansion architecture for 32-bit+ bus width systems.
Technical Context
The 7133SA25PF8 implements fully asynchronous dual-port operation with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves simultaneous accesses to identical addresses by asserting open-drain BUSYL/BUSYR outputs - requiring external pull-up resistors - and gating writes on the contended port.
It supports separate upper/lower byte write enables (R/WLUB/R/WLLB and R/WRUB/R/WRLB) per port, enabling partial-word writes without read-modify-write cycles. The device enters low-power standby (5mW typ.) when both chip enables (CEL/CER) are high, and retains data down to 2V for battery backup applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32,768 bits total); supports independent 16-bit reads/writes on each port |
| Access Time | 25ns maximum (commercial & industrial temp range); defines minimum read cycle time tRC |
| Supply Voltage | 5.0V ±10% (4.5–5.5V); single-supply TTL compatibility eliminates level-shifting needs |
| Standby Power | 5mW typical (IDT7133SA); enables low-power hold mode during CPU idle periods |
| Data Retention | 2V minimum VCC; sustains stored data during main power loss using backup battery |
| Operating Temp | –40°C to +85°C; qualified for industrial environments including motor control and telecom infrastructure |
| I/O Interface | TTL-compatible inputs/outputs; no external level translators required in 5V logic systems |
Pinout & Package
7133SA25PF8 is packaged in a 68-pin PLCC (PLG68) with 0.95″ × 0.95″ footprint. Both VCC pins must be connected to 5V supply and both GND pins to ground for reliable operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low enables respective port; controls power-down entry/exit and output driver state |
| R/WLUB / R/WRUB | Upper Byte Write Enable | Controls write to I/O8–I/O15 on left/right port independently of lower byte |
| R/WLLB / R/WRLB | Lower Byte Write Enable | Controls write to I/O0–I/O7 on left/right port; enables partial-word updates |
| OEL / OER | Output Enable (Left / Right) | Active-low enables tri-state output drivers; allows shared bus usage |
| BUSYL / BUSYR | Busy Flag (Open-Drain Output) | Indicates port contention on same address; requires external pull-up resistor |
| A0L–A10L / A0R–A10R | Address Inputs | 11-bit address per port selects one of 2K locations; fully asynchronous between ports |
| I/O0L–I/O15L / I/O0R–I/O15R | Data I/O (Bidirectional) | 16-bit parallel data path per port; high-impedance when CE or OE inactive |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous left/right port accesses to identical addresses without external logic |
| Separate byte write control | Enables atomic 8-bit updates to upper or lower byte without disturbing adjacent data |
| Open-drain BUSY outputs | Allows wired-OR of multiple BUSY signals for system-level interrupt generation |
| 2V data retention | Maintains memory contents during brown-out or main power failure using backup battery |
| MASTER/SLAVE expansion support | Enables 32-bit+ word width systems using one 7133SA25PF8 (MASTER) + multiple 7143SA25PF8 (SLAVE) |
Applications
| Real-Time DSP Memory Buffer | Dual-CPU Shared Memory System |
|---|---|
Use Scenario: Two DSPs simultaneously access shared coefficient tables and intermediate buffers in radar signal processing. IC Role / Device Role / Timing Role: Dual-port RAM provides non-blocking read/write paths; BUSY logic prevents data corruption during concurrent access to same address. Use Value: Eliminates software arbitration overhead and guarantees deterministic latency under worst-case contention. | Use Scenario: Host CPU and co-processor exchange sensor fusion results via shared memory in autonomous vehicle ECU. IC Role / Device Role / Timing Role: Acts as synchronized inter-processor communication channel with hardware-enforced mutual exclusion. Use Value: Enables lock-free data transfer at full 25ns access speed, reducing inter-core synchronization delay by >90% vs. semaphore-based schemes. |
| Industrial Motion Controller | Telecom Line Card Buffer |
Use Scenario: PLC controller and motion ASIC share trajectory data and status flags in CNC machine control. IC Role / Device Role / Timing Role: Provides deterministic memory access for real-time servo loop execution while background firmware updates parameters. Use Value: Guarantees sub-50ns response to position error interrupts without memory arbitration stalls. | Use Scenario: TDM switch fabric uses dual-port RAM to buffer voice packets between ingress and egress processors. IC Role / Device Role / Timing Role: Buffers time-slotted PCM data streams with zero-cycle turnaround between read and write operations. Use Value: Supports 125MHz bus clocking (8ns period) with 25ns access margin, enabling 100% utilization of 2Mbps E1 links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 7143SA25PF8 | No on-chip arbitration logic; BUSY pin is input-only (SLAVE mode only) | Requires external master device for contention resolution; cannot operate standalone as MASTER | Select when expanding 32-bit+ bus width with 7133SA25PF8 as master; not interchangeable in standalone designs |
| CY7C133-25PC | Same 2K×16 size and 25ns speed but lacks BUSY arbitration; uses semaphores instead of hardware flag | Requires additional logic or firmware to manage port contention; no automatic write inhibit | Choose for cost-sensitive designs where software arbitration is acceptable and board space permits extra glue logic |
Compared with 7143SA25PF8 and CY7C133-25PC, the 7133SA25PF8 uniquely integrates master arbitration logic and open-drain BUSY outputs - enabling true hardware-managed contention resolution in standalone or MASTER/SLAVE configurations without external logic or firmware overhead.
Availability
7133SA25PF8 is available at Aetrix Electronics and suitable for real-time DSP memory buffers, dual-CPU shared memory systems, and industrial motion controllers requiring stable component supply across extended product lifecycles.
Supply support for 7133SA25PF8 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 fabless semiconductor company specializing in timing, memory interface, and RF solutions for communications, computing, and industrial markets.
The 7133SA/LA family was designed specifically for high-reliability embedded systems requiring deterministic dual-ported memory access with hardware arbitration - targeting aerospace, defense, and industrial automation applications.
FAQ
What is the operating temperature range for the 7133SA25PF8?
The 7133SA25PF8 is rated for industrial temperature range of –40°C to +85°C. This specification is confirmed in the "Maximum Operating Temperature and Supply Voltage" table, where the Industrial grade explicitly lists this ambient temperature span. The 7133SA25PF8 part number suffix "SA" denotes standard power version, and "25" indicates 25ns access time - both consistent with industrial qualification.
Does the 7133SA25PF8 support battery backup operation?
Yes, the 7133SA25PF8 supports battery backup operation with 2V data retention capability. As stated in the Features section and confirmed in Table 08 ("Data Retention Characteristics"), the LA version guarantees VDR = 2.0V minimum, and the SA version shares identical retention behavior per device family documentation. This allows the 7133SA25PF8 to maintain memory contents during main power loss when backed by a 2V battery source.
How does the BUSY arbitration logic work in the 7133SA25PF8?
The 7133SA25PF8 implements hardware arbitration via open-drain BUSYL and BUSYR outputs. When both ports attempt access to the same memory address, the internal logic asserts the corresponding BUSY signal, which must be pulled up externally. This signal gates write operations on the contended port, preventing data corruption. The 7133SA25PF8 is the MASTER device - unlike the SLAVE 7143SA25PF8 - and contains the full arbitration circuitry.
Can the 7133SA25PF8 be used in a 32-bit memory system?
Yes, the 7133SA25PF8 is explicitly designed for width expansion: it serves as the MASTER in MASTER/SLAVE configurations with one or more 7143SA25PF8 SLAVE devices. The functional description confirms that "MASTER IDT7133 easily expands data bus width to 32 bits or more using SLAVE IDT7143", leveraging shared BUSY signaling and identical pinouts to eliminate external logic.
What package type is used for the 7133SA25PF8?
The 7133SA25PF8 uses a 68-pin PLCC (Plastic Leaded Chip Carrier) package, designated PLG68. This is confirmed in the "Pin Configurations" section, which shows the top view of the 68-pin PLCC and specifies body dimensions of approximately 0.95 in × 0.95 in × 0.17 in. The "PF8" suffix in the part number aligns with IDT's ordering nomenclature for PLCC packaging.
7133SA25PF8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tape & Reel (TR)
- 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:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
7133SA25PF8 FAQ
1.How can I place an order for 7133SA25PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133SA25PF8 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 7133SA25PF8 reliable?
The price and inventory of 7133SA25PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133SA25PF8 is usually 5 days.
3.What payment methods are accepted for 7133SA25PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133SA25PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133SA25PF8?
7133SA25PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133SA25PF8 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 7133SA25PF8?
For technical support, including 7133SA25PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133SA25PF8 requirements.
6.How does Aetrix verify that 7133SA25PF8 is sourced from the original manufacturer or authorized distributors?
All 7133SA25PF8 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 7133SA25PF8 meets industry standards.
7.What is the process for return or replacement of 7133SA25PF8?
All 7133SA25PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7133SA25PF8, 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 7133SA25PF8 part is unused and in its original packaging.
Return procedure for 7133SA25PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133SA25PF8 Tags
-
M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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