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Renesas 7133SA55PF
- Part No.:
- 7133SA55PF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7133SA55PF.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,068
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Product details
Overview
7133SA55PF from IDT is a high-speed 2K × 16 dual-port static RAM with master arbitration logic, 55 ns max read cycle time, TTL-compatible 5 V ±10% operation, and industrial temperature range (–40°C to +85°C). It enables simultaneous asynchronous access from left and right ports in real-time systems such as digital signal processors and military avionics.
For engineers reviewing the 7133SA55PF datasheet, 7133SA55PF pinout, 7133SA55PF application, or 7133SA55PF equivalent, this page delivers verified timing parameters, BUSY arbitration behavior, byte-select write control, power-down modes, and package-specific layout guidance for 68-pin PLCC implementation.
Technical Context
The 7133SA55PF implements fully asynchronous dual-port architecture with independent 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 requiring external pull-up resistors.
It supports separate upper- and lower-byte write enable (R/WLUB/R/WLLB and R/WRUB/R/WRLB), output enable per port (OEL/OER), and chip-enable–controlled power-down. Battery backup data retention at 2 V is not supported - that feature applies only to LA variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 16 (32,768 bits), dual-port SRAM with independent left/right access paths |
| Max Read Cycle Time | 55 ns - defines minimum time between successive reads on same port |
| Supply Voltage | 5.0 V ±10% - single-rail TTL-compatible operation; two VCC pins must be connected |
| Operating Temperature | –40°C to +85°C - qualified for industrial applications per datasheet revision Jun.16.21 |
| Active Current (Typ.) | 230 mA - measured at f = fMAX with both ports active and outputs disabled |
| Standby Current (Typ.) | 25 mA - with both CE pins high and TTL-level inputs; full CMOS standby is 1.0 mA |
| Input Capacitance | 11 pF - impacts high-speed trace routing and fanout design on address/control lines |
Pinout & Package
7133SA55PF is packaged in a 68-pin Plastic Leaded Chip Carrier (PLCC), top-view pinout per IDT drawing 2746 drw 02. Both VCC and GND pins are duplicated for noise reduction and must be connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L / A0R–A10R | Address Inputs (Left/Right) | 11-bit address per port; selects one of 2K locations independently |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data Bus (Left/Right) | 16-bit parallel data path per port; high-impedance when OE/CE inactive |
| CEL / CER | Chip Enable (Left/Right) | Active-low enable; controls port power-down and memory access permission |
| R/WLUB / R/WRUB | Upper-Byte Write Enable (Left/Right) | Assert low to write I/O8–I/O15; enables byte-granular write control |
| R/WLLB / R/WRLB | Lower-Byte Write Enable (Left/Right) | Assert low to write I/O0–I/O7; allows partial-word writes without masking logic |
| OEL / OER | Output Enable (Left/Right) | Active-low; places I/O pins in high-Z state when deasserted |
| BUSYL / BUSYR | Busy Flag (Open-Drain Output) | Indicates port contention; requires external pull-up; used for hardware arbitration stall |
Key Features
| Feature | Design Value |
|---|---|
| On-chip port arbitration logic | Resolves simultaneous access to identical addresses without external logic; prevents data corruption |
| Separate upper/lower byte write control | Eliminates need for external byte-mask circuitry in mixed-width bus systems |
| Asynchronous dual-port operation | Enables independent CPU or DSP access to shared memory without clock synchronization |
| Open-drain BUSY outputs with priority resolution | Allows wired-OR arbitration signaling across multiple devices in width-expanded configurations |
| TTL-compatible 5 V interface | Direct interfacing with legacy microcontrollers, FPGAs, and ASICs without level-shifting |
Applications
| Digital Signal Processor Memory | Military Avionics Data Buffer |
|---|---|
Use Scenario: Real-time FIR filter coefficient swapping between host processor and DSP core. IC Role / Device Role / Timing Role: Dual-port SRAM acting as shared memory buffer with simultaneous read (DSP) and write (host) access. Use Value: 55 ns access enables sub-microsecond coefficient updates without pipeline stalls or DMA overhead. |
Use Scenario: Redundant flight control system exchanging sensor fusion results between dual-channel processors. IC Role / Device Role / Timing Role: Master arbitration SRAM synchronizing cross-channel writes while preventing race conditions via BUSY flag. Use Value: Hardware-enforced contention resolution eliminates software arbitration latency and ensures deterministic response under EMI stress. |
| Industrial PLC I/O Mapping Table | Telecom Line Card Packet Buffer |
Use Scenario: Storing and updating real-time I/O status tables accessed concurrently by ladder logic engine and HMI update task. IC Role / Device Role / Timing Role: 2K × 16 memory providing atomic read-modify-write capability across two independent execution threads. Use Value: Byte-select write enables efficient bit-field updates (e.g., discrete I/O states) without full-word read-modify-write cycles. |
Use Scenario: Buffering ATM cell headers between ingress and egress traffic managers in carrier-grade line cards. IC Role / Device Role / Timing Role: Dual-port RAM serving as ping-pong buffer with one port feeding scheduler and other receiving packet data. Use Value: Asynchronous operation decouples traffic manager clocks, eliminating FIFO depth uncertainty and jitter accumulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C133-55PC | 55 ns access, 2K × 16, but no on-chip arbitration logic; BUSY function absent | Requires external arbitration logic for contention management; unsuitable for MASTER/SLAVE expansion | Select only if arbitration is handled in FPGA or if single-device use avoids contention |
| IDT7143SA55PF | Identical speed and pinout, but SLAVE-only variant: BUSY pins are inputs only, no arbitration logic | Used only with 7133SA55PF as width-expansion slave; cannot operate standalone as master | Choose when building 32-bit+ systems where 7133SA55PF serves as master arbitrator |
Compared with CY7C133-55PC, 7133SA55PF provides integrated hardware arbitration and master/slave expansion capability; compared with IDT7143SA55PF, it delivers autonomous contention resolution and BUSY output generation essential for standalone dual-CPU designs.
Availability
7133SA55PF is available at Aetrix Electronics and suitable for industrial automation, military avionics, and telecom infrastructure requiring stable component supply, long-term lifecycle support, and MIL-PRF-38535–compliant manufacturing traceability.
Supply support for 7133SA55PF 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, and interface solutions, now part of Renesas Electronics since 2019.
The IDT7133 family was designed specifically for high-reliability dual-processor and real-time embedded systems requiring deterministic memory access, hardware arbitration, and industrial/military temperature operation.
FAQ
What is the function of the BUSY pin on the 7133SA55PF?
The BUSY pin on the 7133SA55PF is an open-drain output that signals port contention when both left and right ports attempt to access the same memory address simultaneously. It requires an external pull-up resistor and is used to stall the contending port's access until the winning port completes its operation. This hardware arbitration eliminates race conditions without software intervention.
Does the 7133SA55PF support battery backup data retention?
No, the 7133SA55PF does not support battery backup data retention. That feature is exclusive to the LA variant (e.g., 7133LA55PF), which specifies 2 V data retention capability. The "SA" suffix denotes standard-power operation with typical active current of 230 mA and standby current of 25 mA at industrial temperatures.
Can the 7133SA55PF be used as a standalone dual-port RAM without arbitration?
Yes, the 7133SA55PF can operate as a standalone dual-port RAM without using the BUSY arbitration feature. When BUSY pins are tied high (via pull-ups) and contention is avoided by system-level protocol, the device functions as a simple asynchronous dual-access memory. Arbitration logic remains inactive unless both ports drive conflicting addresses.
What is the difference between 7133SA55PF and 7143SA55PF?
The 7133SA55PF is the MASTER device with on-chip arbitration logic and open-drain BUSY outputs, while the 7143SA55PF is the SLAVE device with BUSY pins configured as inputs only and no internal arbitration. They share identical pinouts and timing but differ in arbitration capability - 7133SA55PF enables width expansion; 7143SA55PF extends data bus width under 7133SA55PF control.
Which package type does the 7133SA55PF use, and are there layout considerations?
The 7133SA55PF uses a 68-pin Plastic Leaded Chip Carrier (PLCC) package. Layout requires connecting both VCC pins to the 5 V supply and both GND pins to ground for reliable operation. The BUSY pins are open-drain and must be pulled up externally; unused pins (e.g., N/C) should remain unconnected per datasheet guidance.
7133SA55PF 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:
- 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:
- 100-TQFP (14x14)
7133SA55PF FAQ
1.How can I place an order for 7133SA55PF through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133SA55PF 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 7133SA55PF reliable?
The price and inventory of 7133SA55PF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133SA55PF is usually 5 days.
3.What payment methods are accepted for 7133SA55PF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133SA55PF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133SA55PF?
7133SA55PF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133SA55PF 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 7133SA55PF?
For technical support, including 7133SA55PF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133SA55PF requirements.
6.How does Aetrix verify that 7133SA55PF is sourced from the original manufacturer or authorized distributors?
All 7133SA55PF 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 7133SA55PF meets industry standards.
7.What is the process for return or replacement of 7133SA55PF?
All 7133SA55PF units undergo pre-shipment inspection (PSI). If there is an issue with 7133SA55PF, 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 7133SA55PF part is unused and in its original packaging.
Return procedure for 7133SA55PF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133SA55PF Tags
-
M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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