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Renesas 7133LA25PFI
- Part No.:
- 7133LA25PFI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7133LA25PFI.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,179
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Product details
Overview
7133LA25PFI from IDT is a high-speed 2K × 16 dual-port static RAM with independent left/right ports, 25 ns maximum access time (industrial grade), 1.0 mA full-standby current, and battery backup data retention at 2 V. It serves as a MASTER device with on-chip arbitration logic and open-drain BUSY output for contention management in real-time multiprocessing systems.
For engineers reviewing the 7133LA25PFI datasheet, 7133LA25PFI pinout, 7133LA25PFI application, or 7133LA25PFI equivalent, this page delivers verified timing parameters, industrial temperature support (–40°C to +85°C), dual-byte write control per port, TTL-compatible 5 V operation, and confirmed 68-pin PLCC package mapping - all critical for deterministic memory coherency in avionics and industrial controllers.
Technical Context
The 7133LA25PFI implements fully asynchronous dual-port architecture with separate address, control, and I/O buses for left and right ports. Its on-chip arbitration logic resolves simultaneous accesses to identical addresses by asserting BUSYL/BUSYR flags and gating writes on the contended port.
It supports byte-level write enable (R/WLUB/R/WLLB for left port; R/WRUB/R/WRLB for right port), open-drain BUSY output requiring external pull-up, and automatic power-down via CE-driven standby modes - including sub-1 mA ISB3 full-standby current under CMOS-level inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits = 4,096 words × 16-bit wide; enables direct interface to 16-bit microprocessors without data bus multiplexing. |
| Access Time | 25 ns max (industrial temp); guarantees deterministic read latency for hard real-time control loops. |
| Supply Voltage | 5.0 V ±10%; compatible with standard TTL logic families and legacy 5 V system rails. |
| Standby Current | 1.0 mA max (ISB3, CMOS inputs); enables low-power battery backup mode with 2 V data retention. |
| Operating Temp | –40°C to +85°C; qualified for industrial environments including factory automation and transportation electronics. |
| Package | 68-pin PLCC (PLG68); surface-mountable with 0.95″ × 0.95″ footprint and reliable thermal/mechanical performance. |
| Bus Arbitration | On-chip port-to-port arbitration with BUSY flag; eliminates need for external logic in master/slave width-expansion configurations. |
Pinout & Package
7133LA25PFI is packaged in a 68-pin Plastic Leaded Chip Carrier (PLCC), designated PLG68. Both VCC pins must be connected to 5 V and both GND pins to ground for reliable operation. The package body measures approximately 0.95 in × 0.95 in × 0.17 in.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L / A0R–A10R | Address Inputs | 11-bit address per port; selects one of 2K locations independently on left/right sides. |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data | 16-bit parallel data path per port; supports concurrent read/write across ports with no bus turnaround delay. |
| CEL / CER | Chip Enable | Active-low enable per port; controls port activation and entry into low-power standby when deasserted. |
| R/WLUB / R/WRUB | Upper Byte Write Enable | Controls write to I/O8–I/O15 on left/right port; enables partial-word updates without disturbing lower byte. |
| R/WLLB / R/WRLB | Lower Byte Write Enable | Controls write to I/O0–I/O7 on left/right port; allows granular 8-bit memory modification. |
| OEL / OER | Output Enable | Active-low tri-state control per port; isolates I/O bus during inactive cycles to prevent contention. |
| BUSYL / BUSYR | Busy Flag | Open-drain output (left) / input (right); signals port contention and gates writes during arbitration resolution. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent asynchronous ports | Enables true parallel access - e.g., CPU reads while DSP writes - without software synchronization overhead. |
| On-chip arbitration logic | Resolves same-address contention in hardware; eliminates race conditions and guarantees deterministic BUSY assertion timing. |
| Byte-selectable write control | Permits 8-bit updates to upper/lower halves of 16-bit word, preserving integrity of adjacent data during partial writes. |
| 2 V data retention mode | Retains memory contents during main power loss using backup battery; validated for LA-series at 2 V, 100–4000 µA ICCDR. |
| TTL-compatible 5 V interface | Direct connection to legacy 5 V microcontrollers and FPGAs without level-shifting circuitry. |
Applications
| Real-Time Motion Control | Avionics Display Buffering |
|---|---|
Use Scenario: Coordinating servo position updates and sensor feedback in CNC machines with dual-axis motion profiles. IC Role / Device Role / Timing Role: MASTER 7133LA25PFI acts as shared memory hub between motion controller (left port) and FPGA-based PWM generator (right port), synchronizing position commands and encoder readings. Use Value: 25 ns access ensures sub-50 ns round-trip latency for closed-loop cycle times under 100 µs; on-chip arbitration prevents command corruption during simultaneous access. | Use Scenario: Storing and refreshing flight instrument graphics data in multi-display cockpit systems with independent rendering and update engines. IC Role / Device Role / Timing Role: Dual-port RAM buffers rasterized display frames - left port accepts new frame data from graphics processor, right port feeds pixel stream to video DAC. Use Value: Independent 16-bit ports eliminate bus arbitration delays; 2 V retention preserves last valid display state during brief power interruptions. |
| Industrial PLC I/O Mapping | Communications Protocol Bridge |
Use Scenario: Sharing I/O status and configuration registers between main PLC CPU and safety-monitoring coprocessor. IC Role / Device Role / Timing Role: 7133LA25PFI provides deterministic memory-mapped interface where CPU writes control outputs (left port) and coprocessor reads inputs (right port). Use Value: Industrial temperature rating (–40°C to +85°C) ensures reliability in unconditioned control cabinets; byte-write enables atomic updates to individual I/O bits. | Use Scenario: Bridging Modbus RTU and CANopen protocols in gateway devices requiring concurrent packet assembly and parsing. IC Role / Device Role / Timing Role: Left port receives serial protocol frames from UART interface; right port supplies parsed payload to CAN controller - both operating asynchronously. Use Value: Full 16-bit bandwidth supports burst transfers of protocol headers and payloads; BUSY logic prevents buffer overwrites during protocol handshaking collisions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C133-25JC | 5 V, 2K × 16, 25 ns, 68-pin PLCC; no built-in BUSY arbitration - requires external logic for contention resolution. | Lacks on-chip arbitration; suitable only for non-contention or software-managed dual-port use cases. | Select when arbitration is handled externally or unnecessary; avoid if hardware-enforced coherency is required. |
| IDT7143LA25PFI | Same family, SLAVE variant; BUSY pin is input-only, no arbitration logic; identical timing and packaging. | Used exclusively with 7133LA25PFI in width-expanded systems (e.g., 32-bit bus); cannot operate standalone as MASTER. | Choose only as companion SLAVE in MASTER/SLAVE configurations; not a functional replacement for 7133LA25PFI. |
Compared with CY7C133-25JC, 7133LA25PFI integrates arbitration and reduces BOM count; versus IDT7143LA25PFI, it provides essential MASTER functionality - making it irreplaceable in standalone or primary dual-port roles requiring hardware coherency enforcement.
Availability
7133LA25PFI is available at Aetrix Electronics and suitable for industrial automation, avionics subsystems, and real-time motion control applications requiring stable component supply, long-term lifecycle assurance, and guaranteed industrial temperature compliance.
Supply support for 7133LA25PFI 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, now part of Renesas Electronics.
The IDT7133/7143 product line was designed specifically for deterministic dual-processor memory sharing in mission-critical industrial and aerospace systems demanding hardware-enforced coherency and low-latency access.
FAQ
What is the operating temperature range for the 7133LA25PFI?
The 7133LA25PFI is rated for industrial temperature operation from –40°C to +85°C. This specification is explicitly confirmed in the datasheet's "Maximum Operating Temperature and Supply Voltage" table and applies to all LA-series variants including 7133LA25PFI. It is not rated for commercial (0°C to +70°C) or military (–55°C to +125°C) grades.
Does the 7133LA25PFI support battery backup data retention?
Yes, the 7133LA25PFI supports data retention at VCC = 2.0 V, with typical retention current (ICCDR) of 100 µA and maximum of 4000 µA across the industrial temperature range. This capability is exclusive to LA-series devices and is documented in Table 8 ("Data Retention Characteristics") of the official datasheet.
Is the 7133LA25PFI pin-compatible with the 7143LA25PFI?
Yes, the 7133LA25PFI and 7143LA25PFI share identical pinouts and package dimensions (68-pin PLCC), as stated in the datasheet: "The IDT7133/7143 devices have identical pinouts." However, their BUSY pin functionality differs - 7133LA25PFI has BUSY as an open-drain output, while 7143LA25PFI uses BUSY as an input only.
What is the purpose of the BUSY signal on the 7133LA25PFI?
The BUSY signal on the 7133LA25PFI is an open-drain output that indicates port contention when both ports attempt simultaneous access to the same memory location. It gates writes on the contended port and requires an external pull-up resistor. This hardware arbitration mechanism ensures deterministic memory coherency without software intervention.
Can the 7133LA25PFI operate with a single 5 V supply?
Yes, the 7133LA25PFI operates from a single 5.0 V ±10% supply (4.5 V to 5.5 V), as specified in the "Recommended DC Operating Conditions" table. Both VCC pins must be connected to the supply, and both GND pins to ground, per datasheet note requirements for reliable operation.
7133LA25PFI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tray
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
7133LA25PFI FAQ
1.How can I place an order for 7133LA25PFI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133LA25PFI 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 7133LA25PFI reliable?
The price and inventory of 7133LA25PFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133LA25PFI is usually 5 days.
3.What payment methods are accepted for 7133LA25PFI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133LA25PFI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133LA25PFI?
7133LA25PFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133LA25PFI 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 7133LA25PFI?
For technical support, including 7133LA25PFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133LA25PFI requirements.
6.How does Aetrix verify that 7133LA25PFI is sourced from the original manufacturer or authorized distributors?
All 7133LA25PFI 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 7133LA25PFI meets industry standards.
7.What is the process for return or replacement of 7133LA25PFI?
All 7133LA25PFI units undergo pre-shipment inspection (PSI). If there is an issue with 7133LA25PFI, 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 7133LA25PFI part is unused and in its original packaging.
Return procedure for 7133LA25PFI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133LA25PFI 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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