My Inquiry
My Account
Renesas 7133SA35PF8
- Part No.:
- 7133SA35PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7133SA35PF8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,432
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7133SA35PF8 from IDT is a high-speed 2K × 16 dual-port static RAM with master arbitration logic, 35 ns max access time, TTL-compatible 5V ±10% operation, and industrial temperature range (–40°C to +85°C). It enables simultaneous independent read/write access via left and right ports and supports 32-bit+ bus expansion using IDT7143 slave devices in real-time control systems.
For engineers reviewing the 7133SA35PF8 datasheet, 7133SA35PF8 pinout, 7133SA35PF8 application, or 7133SA35PF8 equivalent, key selection criteria include BUSY arbitration timing (tBAA ≤ 30 ns), byte-selectable write control (R/WLUB/R/WLLB), dual-port standby current (ISB3 ≤ 0.2 mA typ.), and 68-pin PLCC package compatibility with legacy military/industrial PCB layouts.
Technical Context
The 7133SA35PF8 implements on-chip port arbitration logic exclusively in MASTER mode, generating open-drain BUSYL/BUSYR outputs requiring external pull-up resistors. Its dual asynchronous ports operate fully independently - address, control, and I/O pins are physically separated, enabling concurrent access without internal synchronization overhead.
It supports battery backup data retention at VCC = 2.0 V (LA variant), but the SA suffix indicates standard active power profile (1150 mW typ. active, 5 mW typ. standby). The device uses CMOS high-performance fabrication and complies with MIL-PRF-38535 QML for military-grade reliability.
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 |
| Access Time | 35 ns maximum (industrial grade); defines worst-case delay from address/CE/OE assertion to valid data output |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V); single-rail TTL-compatible operation with no auxiliary supplies required |
| Operating Temp | –40°C to +85°C; qualified for industrial environments with full parameter guarantee across range |
| Active Current | 250 mA typical (both ports active, f = fMAX); determines thermal design and regulator sizing |
| Standby Current | 0.2 mA typical (full CMOS standby, ISB3); enables ultra-low-power hold mode during CPU idle cycles |
| Package | 68-pin PLCC (PLG68); 0.95″ × 0.95″ footprint compatible with wave-solder and reflow assembly |
Pinout & Package
68-pin Plastic Leaded Chip Carrier (PLCC) package with 0.95″ × 0.95″ body size and J-lead configuration. Dual-row, square-outline package with Pin 1 index notch at top-left corner (top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L | Left port address inputs | 11-bit address bus for left port (2K = 211 locations) |
| A0R–A10R | Right port address inputs | Independent 11-bit address bus for right port |
| I/O0L–I/O15L | Left port bidirectional data | 16-bit data path; high-impedance when OEL = VIH or CEL = VIH |
| I/O0R–I/O15R | Right port bidirectional data | Independent 16-bit data path with separate output enable control |
| CEL / CER | Chip enable (active low) | Port-specific enable; deassertion places port in low-power standby (ISB1/ISB2) |
| R/WLUB / R/WRUB | Upper byte write enable | Controls write to I/O8–I/O15 on respective port; enables byte-level granularity |
| R/WLLB / R/WRLB | Lower byte write enable | Controls write to I/O0–I/O7 on respective port; supports mixed-width transactions |
| OEL / OER | Output enable (active low) | Tri-states I/O drivers independently of CE; allows shared bus contention management |
| BUSYL / BUSYR | Busy flag (open drain) | Indicates port-to-port address contention; requires external 4.7kΩ pull-up to VCC |
| VCC (pins 17, 51) | Power supply | Both pins must be connected to 5V rail for reliable operation and signal integrity |
| GND (pins 26, 62) | Ground reference | Both pins must be connected to system ground plane to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Enables deterministic resolution of simultaneous same-address access without external logic or software intervention |
| Separate upper/lower byte write control | Allows partial-word writes (8-bit) without read-modify-write cycles, reducing bus traffic and latency |
| Open-drain BUSY outputs | Permits wired-OR of multiple BUSY signals for system-level interrupt generation or stall coordination |
| Master/slave expansion capability | Supports seamless 32-bit+ data width scaling using IDT7143 slaves, eliminating "busy lock-out" in multi-chip systems |
| Full asynchronous dual-port operation | Eliminates clock domain crossing constraints; each port operates independently with no global timing reference |
Applications
| Real-Time Motor Control | Digital Signal Processing Buffer |
|---|---|
Use Scenario: Dual-CPU architecture where one processor handles motion trajectory calculation while another executes PWM timing loops. IC Role / Device Role / Timing Role: 7133SA35PF8 serves as shared memory buffer between CPUs, with left port for trajectory updates and right port for real-time servo loop reads/writes. Use Value: 35 ns access ensures sub-microsecond inter-processor communication latency, enabling 100 kHz closed-loop control without jitter. | Use Scenario: High-throughput audio/video processing pipeline requiring ping-pong buffering between ADC/DAC and DSP core. IC Role / Device Role / Timing Role: 7133SA35PF8 acts as dual-port FIFO buffer - left port accepts streaming samples from ADC, right port feeds processed frames to DAC. Use Value: Independent port arbitration prevents sample loss during simultaneous capture and playback, sustaining 48 MSPS throughput. |
| Avionics Data Acquisition | Industrial PLC Memory Module |
Use Scenario: Flight data recorder interfacing with sensor fusion unit and telemetry transmitter over separate timing domains. IC Role / Device Role / Timing Role: 7133SA35PF8 provides non-blocking memory access: left port logs sensor data at 10 kHz, right port streams compressed packets to RF modem. Use Value: Industrial temperature rating and MIL-PRF-38535 compliance ensure operation in –40°C cabin environments with guaranteed timing margins. | Use Scenario: Modular PLC backplane where main controller and I/O scanner exchange process variables without CPU intervention. IC Role / Device Role / Timing Role: 7133SA35PF8 functions as deterministic shared memory - left port mapped to controller's memory space, right port to scanner's DMA engine. Use Value: Byte-selectable write enables efficient update of individual I/O points (e.g., single relay status) without corrupting adjacent register values. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C024AV-35AXC | 32K × 16 organization, 35 ns access, 3.3V supply; no built-in BUSY arbitration logic | Requires external logic for contention resolution; better suited for wider memory depth needs | Select when deeper memory (32K vs 2K) is required and system can implement arbitration externally |
| IDT7143SA35PF8 | Identical pinout and timing, but SLAVE-only; BUSY pins are inputs only, no arbitration logic | Used only in master/slave configurations where 7133SA35PF8 handles arbitration | Select only as companion to 7133SA35PF8 in 32-bit+ bus expansion; not standalone replacement |
Compared with CY7C024AV-35AXC and IDT7143SA35PF8, the 7133SA35PF8 uniquely integrates master arbitration logic in a compact 2K×16 footprint, enabling deterministic contention resolution without external components - critical for real-time deterministic systems where latency predictability outweighs memory depth requirements.
Availability
7133SA35PF8 is available at Aetrix Electronics and suitable for real-time motor control, avionics data acquisition, and industrial PLC memory modules requiring stable component supply, long-term obsolescence management, and MIL-qualified reliability.
Supply support for 7133SA35PF8 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, RF, and sensor solutions, now part of Renesas Electronics.
The IDT7133/7143 product line was designed specifically for deterministic dual-processor and real-time embedded systems requiring hardware-arbitrated, low-latency shared memory with industrial/military environmental resilience.
FAQ
What is the function of the BUSY pins on the 7133SA35PF8?
The BUSYL and BUSYR pins on the 7133SA35PF8 are open-drain outputs that signal port-to-port address contention. When both ports attempt access to the same memory location simultaneously, the on-chip arbitration logic asserts BUSY to stall the lower-priority port. Because they are open-drain, each requires an external pull-up resistor to VCC. This mechanism prevents data corruption without software intervention and is fundamental to the 7133SA35PF8's role as a MASTER device in multi-chip systems.
Can the 7133SA35PF8 operate with a 3.3V supply?
No, the 7133SA35PF8 is specified exclusively for 5.0 V ±10% (4.5–5.5 V) operation and is TTL-compatible. Its input thresholds (VIH = 2.2 V min, VIL = 0.8 V max) and output drive characteristics (VOL = 0.4 V @ 4 mA) are designed for 5V logic families. Using 3.3V violates the Absolute Maximum Ratings and will result in undefined behavior, including failure to recognize logic highs and insufficient noise margin. For 3.3V systems, consider newer alternatives like the IDT70V24 series.
How does the 7133SA35PF8 differ from the IDT7143SA35PF8?
The 7133SA35PF8 contains on-chip arbitration logic and drives BUSY as an output, making it the MASTER device in width-expansion configurations. In contrast, the IDT7143SA35PF8 has identical pinout and timing but lacks arbitration logic - its BUSY pins are inputs only, and it functions solely as a SLAVE. They share the same 68-pin PLCC package and 35 ns speed grade, but the 7133SA35PF8 cannot be replaced by the 7143SA35PF8 in standalone applications requiring hardware arbitration.
What is the minimum pulse width required for a write cycle on the 7133SA35PF8?
The minimum write pulse width (tWP) for the 7133SA35PF8 is 25 ns at the 35 ns speed grade. This applies to both R/W-controlled and CE-controlled write cycles. If OE is active (low) during a write, the pulse must satisfy the larger of tWP or (tWZ + tDW) to ensure I/O drivers fully disable before data placement. Violating tWP risks incomplete write operations or metastability, especially under worst-case voltage/temperature conditions.
Does the 7133SA35PF8 support battery backup operation?
No - the 7133SA35PF8 (SA suffix) is the standard-power version and does not support battery backup data retention. Only the LA-suffix variants (e.g., 7133LA35PF8) guarantee data retention at VCC = 2.0 V with ICCDR ≤ 4000 µA (military) or ≤ 1500 µA (commercial). The SA version draws significantly higher standby current (5 mW typ.) and loses data when VCC drops below 2.0 V. For battery-backed applications, the LA variant must be selected explicitly.
7133SA35PF8 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:
- 35ns
- Access Time:
- 35 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)
7133SA35PF8 FAQ
1.How can I place an order for 7133SA35PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133SA35PF8 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 7133SA35PF8 reliable?
The price and inventory of 7133SA35PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133SA35PF8 is usually 5 days.
3.What payment methods are accepted for 7133SA35PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133SA35PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133SA35PF8?
7133SA35PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133SA35PF8 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 7133SA35PF8?
For technical support, including 7133SA35PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133SA35PF8 requirements.
6.How does Aetrix verify that 7133SA35PF8 is sourced from the original manufacturer or authorized distributors?
All 7133SA35PF8 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 7133SA35PF8 meets industry standards.
7.What is the process for return or replacement of 7133SA35PF8?
All 7133SA35PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7133SA35PF8, 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 7133SA35PF8 part is unused and in its original packaging.
Return procedure for 7133SA35PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133SA35PF8 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…
