My Inquiry
My Account
Renesas 7133SA55PFI
- Part No.:
- 7133SA55PFI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7133SA55PFI.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,667
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7133SA55PFI from IDT is a high-speed 2K × 16 dual-port static RAM with master arbitration logic, 55 ns maximum read cycle time, TTL-compatible 5 V ±10% operation, and industrial temperature range (–40°C to +85°C). It supports independent asynchronous access on left/right ports and enables 32-bit+ bus expansion when paired with IDT7143 slave devices in real-time embedded control systems.
For engineers reviewing the 7133SA55PFI datasheet, 7133SA55PFI pinout, 7133SA55PFI application, or 7133SA55PFI equivalent, this page delivers verified timing parameters, BUSY arbitration behavior, byte-select write control, power-down modes, and package-specific I/O mapping for deterministic dual-ported memory integration.
Technical Context
The 7133SA55PFI implements fully asynchronous dual-port architecture with separate address, control, and bidirectional I/O buses per port. Its on-chip arbitration logic resolves contention via open-drain BUSYL/BUSYR outputs (master-only), enabling hardware-stalled writes without external logic.
It supports independent byte-write enable (R/WLUB/R/WLLB and R/WRUB/R/WRLB), output enable per port (OEL/OER), and chip-enable–controlled power-down. Data retention at 2 V is supported only in LA variants; the SA variant prioritizes speed over ultra-low standby current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32,768 bits total); supports independent 16-bit reads/writes on two ports |
| Read Cycle Time (tRC) | 55 ns max - defines minimum interval between successive reads on same port |
| Address Access Time (tAA) | 55 ns max - delay from stable address to valid data output |
| Operating Voltage | 5.0 V ±10% - single-supply TTL compatibility; both VCC pins must be connected |
| Temperature Range | –40°C to +85°C - qualified for industrial environments without derating |
| Active Current (ICC) | 230 mA typ. - dynamic current draw during concurrent port activity at fMAX |
| Standby Current (ISB1) | 25 mA max - current when both ports disabled (CEL/CER = VIH) at max frequency |
Pinout & Package
7133SA55PFI is packaged in a 68-pin PLCC (PLG68), with identical pinout to IDT7143 series. Both VCC and GND pins are duplicated for noise immunity and thermal management; all four must be properly decoupled.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L / A0R–A11R | 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 or CE inactive |
| CEL / CER | Chip Enable (Left/Right) | Active-low enable; controls port activation and power-down mode |
| R/WLUB / R/WRUB | Upper Byte Write Enable (Left/Right) | Asserts write to I/O8–I/O15; allows byte-granular writes without masking logic |
| R/WLLB / R/WRLB | Lower Byte Write Enable (Left/Right) | Asserts write to I/O0–I/O7; enables 8-bit partial writes per port |
| OEL / OER | Output Enable (Left/Right) | Active-low; places I/O pins in high-Z when deasserted, enabling bus sharing |
| BUSYL / BUSYR | Busy Flag (Master Output / Slave Input) | Open-drain output on 7133SA55PFI; signals contention to stall external controller |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous same-address access without external logic; asserts BUSY to stall contending port |
| Separate upper/lower byte write control | Eliminates need for external byte-mask circuitry in mixed-data-width systems |
| Asynchronous dual-port operation | Enables real-time co-processing: one port handles CPU access while other serves DMA or peripheral interface |
| 5 V TTL-compatible interface | Direct connection to legacy microcontrollers, FPGAs, and ASICs without level-shifting |
| Industrial temperature qualification | Guaranteed functionality across –40°C to +85°C ambient without thermal throttling or timing margin loss |
Applications
| Real-Time Motion Control | Digital Signal Processing Buffer |
|---|---|
Use Scenario: Simultaneous position loop update (CPU port) and servo waveform generation (FPGA port) in CNC drives. IC Role / Device Role / Timing Role: Dual-port RAM acts as low-latency shared memory buffer with hardware arbitration preventing write collisions during axis synchronization. Use Value: 55 ns tRC ensures sub-100 ns memory access for 10 kHz servo loops; BUSY logic eliminates software polling overhead. |
Use Scenario: Streaming FFT input/output between DSP core and ADC/DAC interface in radar front-end. IC Role / Device Role / Timing Role: Provides zero-wait-state ping-pong buffering with independent read/write addressing per port. Use Value: Asynchronous operation enables continuous data ingestion while computation proceeds; byte-write enables efficient coefficient updates. |
| Avionics Display Frame Buffer | Industrial PLC Communication Gateway |
Use Scenario: Rendering engine (GPU port) writes pixel data while display controller (CPU port) reads for scan-out in HUD systems. IC Role / Device Role / Timing Role: Acts as contention-managed frame store with hardware BUSY signaling to prevent visual tearing during rapid UI updates. Use Value: Open-drain BUSYL/BUSYR support pull-up to 5 V logic rail; 68-pin PLCC meets vibration-resistant avionics packaging requirements. |
Use Scenario: Protocol translation between Modbus RTU (UART port) and EtherCAT (FPGA port) in edge gateway. IC Role / Device Role / Timing Role: Shared register map storage with atomic read-modify-write via dual-port isolation. Use Value: Industrial temp rating ensures reliability in uncooled control cabinets; CE-controlled power-down reduces idle power in battery-backed gateways. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Cypress CY7C1362V-55AXC | 55 ns tRC, 2K × 16, but uses 100-pin TQFP; no integrated BUSY arbitration - requires external logic for contention resolution | Suitable for space-constrained PCBs where arbitration is handled in FPGA; lacks native master/slave expansion capability | Select when footprint density outweighs arbitration simplicity and system-level timing predictability is managed in programmable logic |
| IDT7143SA55PFI | Identical speed grade and pinout, but SLAVE-only: BUSY pins are inputs only; no on-chip arbitration logic | Used exclusively with 7133SA55PFI in 32-bit+ width-expansion configurations; cannot operate stand-alone as master | Choose only as companion device to 7133SA55PFI in multi-chip bus-width scaling; not a functional substitute |
Compared with CY7C1362V-55AXC, 7133SA55PFI delivers deterministic hardware arbitration and seamless master/slave expansion, reducing BOM count and timing uncertainty. Against IDT7143SA55PFI, it provides the essential arbitration intelligence required for autonomous dual-processor memory sharing.
Availability
7133SA55PFI is available at Aetrix Electronics and suitable for real-time motion control, digital signal processing buffers, and avionics display frame buffers requiring stable component supply across extended product lifecycles.
Supply support for 7133SA55PFI 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 high-performance memory, timing, and interface solutions for communications, computing, and industrial markets.
The IDT7133/7143 family was designed specifically for deterministic dual-ported memory applications in real-time embedded systems where hardware arbitration, low-latency access, and industrial reliability are mandatory.
FAQ
What is the function of the BUSY pins on the 7133SA55PFI?
The BUSYL and BUSYR pins on the 7133SA55PFI are open-drain outputs that signal memory contention when both ports attempt simultaneous access to the same address. They stall the contending port's write operation until resolution, eliminating race conditions. External pull-up resistors are required, as specified in the functional description and pin configuration diagrams.
Does the 7133SA55PFI support battery backup data retention?
No, the 7133SA55PFI does not support battery backup data retention. That feature is exclusive to the LA variant (e.g., 7133LA55PFI), which specifies 2 V data retention voltage and lower standby current. The "SA" suffix denotes standard active-power performance optimized for speed, not low-voltage retention.
Can the 7133SA55PFI operate with only one port enabled?
Yes, the 7133SA55PFI supports single-port operation: asserting CEL = VIL enables the left port while holding CER = VIH disables the right port (and vice versa). In this mode, the disabled port enters standby, drawing ISB1 current (25 mA max), and its I/O pins remain in high-impedance state.
What is the significance of the "PFI" suffix in 7133SA55PFI?
The "PFI" suffix indicates a 68-pin PLCC package (PLG68) with industrial temperature range (–40°C to +85°C) and lead-free finish. It distinguishes this variant from PGA (GU68), flatpack (FP68), or TQFP (PNG100) versions, and confirms compliance with RoHS and JEDEC industrial qualification standards.
How does the 7133SA55PFI handle simultaneous writes to the same address?
When both ports attempt a write to the same address, the 7133SA55PFI's on-chip arbitration logic asserts BUSYL or BUSYR to stall the later-arriving write. The first port wins based on timing priority (tAPS = 5 ns setup), ensuring deterministic resolution without data corruption or external intervention.
7133SA55PFI 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
7133SA55PFI FAQ
1.How can I place an order for 7133SA55PFI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133SA55PFI 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 7133SA55PFI reliable?
The price and inventory of 7133SA55PFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133SA55PFI is usually 5 days.
3.What payment methods are accepted for 7133SA55PFI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133SA55PFI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133SA55PFI?
7133SA55PFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133SA55PFI 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 7133SA55PFI?
For technical support, including 7133SA55PFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133SA55PFI requirements.
6.How does Aetrix verify that 7133SA55PFI is sourced from the original manufacturer or authorized distributors?
All 7133SA55PFI 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 7133SA55PFI meets industry standards.
7.What is the process for return or replacement of 7133SA55PFI?
All 7133SA55PFI units undergo pre-shipment inspection (PSI). If there is an issue with 7133SA55PFI, 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 7133SA55PFI part is unused and in its original packaging.
Return procedure for 7133SA55PFI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133SA55PFI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
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
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
