My Inquiry
My Account
Renesas 7133SA35J
- Part No.:
- 7133SA35J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
7133SA35J.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,615
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7133SA35J from IDT (Integrated Device Technology) is a high-speed 2K × 16 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, BUSY output flag (open-drain), and separate upper/lower byte write control per port. It delivers 35 ns max read cycle time, operates at 5.0 V ±10%, supports industrial temperature range (–40°C to +85°C), and enables 32-bit+ bus width expansion when paired with IDT7143 SLAVE devices in real-time embedded systems requiring concurrent CPU/DSP access.
For engineers reviewing the 7133SA35J datasheet, 7133SA35J pinout, 7133SA35J application, or 7133SA35J equivalent, this page provides verified timing parameters, validated pin functions for PGA/PLCC/TQFP packages, confirmed arbitration behavior under address contention, battery-retention capability (not applicable to SA grade), and direct alternatives for dual-port memory system design.
Technical Context
The 7133SA35J 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 memory locations by asserting BUSYL or BUSYR - open-drain outputs requiring external pull-up resistors - to stall the contending port.
As a MASTER device, it features dedicated BUSY output signaling (not input), supports TTL-compatible 5V operation, and includes separate R/WLUB/R/WLLB and R/WRUB/R/WRLB controls for byte-level writes on both ports. It does not support data retention mode - that function is exclusive to LA-grade 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 (tRC) | 35 ns - defines minimum time between successive reads on same port |
| Supply Voltage | 5.0 V ±10% - requires two VCC pins tied to 4.5–5.5 V supply for reliable operation |
| Operating Temperature | –40°C to +85°C - qualified for industrial applications, not commercial or military grades |
| Active Current (ICC) | 250 mA typ. - dynamic current draw during concurrent port activity at fMAX |
| Standby Current (ISB1) | 25 mA typ. - power consumed when both ports disabled (CEL/CER = VIH) |
| Input/Output Compatibility | TTL-level - VIH = 2.2 V min., VIL = 0.8 V max., VOH = 2.4 V min. at –4 mA |
Pinout & Package
7133SA35J is available in 68-pin PLCC (PLG68), 68-pin ceramic PGA (GU68), 68-pin flatpack (FP68), and 100-pin TQFP (PNG100) packages. Pin functions are identical across all variants per datasheet Section "Pin Names" and "Pin Configurations".
| 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 inactive |
| CEL / CER | Chip Enable (Left/Right) | Active-low enable for respective port; controls power-down entry/exit |
| R/WLUB / R/WRUB | Upper Byte Write Enable (Left/Right) | Active-low control for I/O8–I/O15; enables byte-selective writes |
| R/WLLB / R/WRLB | Lower Byte Write Enable (Left/Right) | Active-low control for I/O0–I/O7; enables byte-selective writes |
| OEL / OER | Output Enable (Left/Right) | Active-low control for output drivers; overrides R/W state during reads |
| BUSYL / BUSYR | Busy Flag (Left/Right Output) | Open-drain output (MASTER only); asserts low during arbitration contention |
| VCC (×2) / GND (×2) | Power & Ground | Both VCC and GND pins must be connected - no internal bonding redundancy |
Key Features
| Feature | Design Value |
|---|---|
| On-chip port arbitration logic | Resolves simultaneous left/right access to same address without external logic; prevents data corruption |
| Separate upper/lower byte write control | Enables partial-word writes (8-bit granularity) on each port - critical for mixed-data-width systems |
| Open-drain BUSY outputs with priority resolution | Allows wired-OR of BUSYL/BUSYR for system-level interrupt generation on contention events |
| Full asynchronous operation | No clock required; timing governed solely by tRC, tAA, tACE, and tAOE - simplifies interface to async CPUs/DSPs |
| Width expansion support (MASTER/SLAVE) | Enables 32-bit+ data buses using one 7133SA35J MASTER + multiple 7143 SLAVE devices - no glue logic needed |
Applications
| Real-Time DSP Co-Processing | Redundant Control Systems |
|---|---|
Use Scenario: Two independent processors (e.g., ARM Cortex-M7 and SHARC DSP) share sensor data and control commands via shared memory without software locks. IC Role / Device Role / Timing Role: MASTER dual-port RAM providing atomic read/write arbitration and BUSY-driven stall signaling to prevent race conditions. Use Value: Eliminates need for semaphores or polling; 35 ns tRC enables sub-30 MHz processor bus synchronization. |
Use Scenario: Dual-channel flight controller where primary and backup channels exchange status, telemetry, and failover commands. IC Role / Device Role / Timing Role: Shared memory buffer with hardware-enforced mutual exclusion via BUSY assertion on address collision. Use Value: Guarantees deterministic response under fault conditions; meets DO-254 Level A timing constraints for safety-critical arbitration. |
| Industrial PLC Memory Expansion | Test Equipment Pattern Buffer |
Use Scenario: Expanding I/O mapping memory in programmable logic controllers using 7133SA35J as MASTER and 7143 as SLAVE for 32-bit word access. IC Role / Device Role / Timing Role: Width-expansion node enabling legacy 16-bit bus controllers to drive 32-bit peripheral interfaces. Use Value: Achieves full-speed 32-bit transfers without wait states; leverages identical pinout across MASTER/SLAVE for layout reuse. |
Use Scenario: High-speed automated test equipment storing stimulus/response patterns for parallel digital channel testing. IC Role / Device Role / Timing Role: Dual-port buffer allowing pattern generator (left port) and analyzer (right port) to operate concurrently. Use Value: 35 ns tRC supports >28 MHz pattern rates; byte-write enables efficient mask-based vector updates without full-word rewrite. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 7133SA25J | 25 ns max tRC; otherwise identical architecture, pinout, and voltage specs | Suitable for lower-speed industrial designs where 35 ns margin is unnecessary | Select when system clock domain operates ≤40 MHz and thermal/power budget favors reduced speed grade |
| 7133LA35J | Same 35 ns speed but adds 2V data retention; higher standby current (1 µW vs. 5 mW typ.) | Required for battery-backed memory preservation during main power loss | Choose only if non-volatile data hold during brownout or shutdown is mandatory - SA variant lacks retention circuitry |
Compared with 7133SA25J and 7133LA35J, the 7133SA35J offers optimal balance of industrial-grade speed (35 ns), low active power (250 mA typ.), and MASTER arbitration capability - making it the preferred choice for cost-sensitive, non-battery-backed real-time dual-CPU systems.
Availability
7133SA35J is available at Aetrix Electronics and suitable for real-time DSP co-processing, redundant control systems, industrial PLC memory expansion, and test equipment pattern buffering requiring stable component supply across extended production lifecycles.
Supply support for 7133SA35J 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) was a fabless semiconductor company specializing in high-performance timing, memory, and interface ICs, acquired by Renesas Electronics in 2019.
The IDT7133 family was designed specifically for deterministic, lock-free shared-memory architectures in industrial control, avionics, and communications infrastructure - emphasizing hardware arbitration over software coordination.
FAQ
What is the maximum operating temperature range for the 7133SA35J?
The 7133SA35J is rated for industrial temperature operation from –40°C to +85°C. This is explicitly confirmed in the "Maximum Operating Temperature and Supply Voltage" table (Table 2746 tbl 04), where the "Industrial" grade row lists this exact range. It is not qualified for commercial (0°C to +70°C) or military (–55°C to +125°C) grades.
Does the 7133SA35J support battery backup or data retention mode?
No, the 7133SA35J does not support battery backup or data retention. That capability is exclusive to LA-grade variants (e.g., 7133LA35J), as stated in the "Features" section: "Battery backup operation–2V data retention" applies only to LA versions. The SA suffix denotes standard active-power performance without retention circuitry.
Is the 7133SA35J pin-compatible with the 7143SA35J SLAVE device?
Yes, the 7133SA35J and 7143SA35J share identical pinouts across all package types (PLCC, PGA, TQFP), as confirmed in the "Description" section: "The IDT7133/7143 devices have identical pinouts." However, BUSY pin functionality differs: 7133SA35J uses BUSYL/BUSYR as open-drain outputs, while 7143SA35J uses them as inputs.
What is the purpose of the two VCC and two GND pins on the 7133SA35J?
Both VCC pins must be connected to the 5.0 V ±10% supply, and both GND pins must be connected to ground - as explicitly noted in "Pin Configurations" footnotes. This dual-supply/dual-ground configuration ensures stable power delivery and noise immunity across the high-speed 32-bit bidirectional I/O structure, preventing voltage droop or ground bounce during simultaneous port activity.
Can the 7133SA35J be used without external pull-up resistors on BUSY pins?
No. The BUSYL and BUSYR pins on the 7133SA35J are open-drain outputs and require external pull-up resistors to function correctly, as stated in Note 1 of the Functional Block Diagram: "IDT7133 (MASTER): BUSY is open drain output and requires pull-up resistor." Without pull-ups, BUSY signals cannot assert high-impedance or logic-high states, breaking arbitration signaling.
7133SA35J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-LCC (J-Lead)
- Packaging:
- Tube
- 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:
- 68-PLCC (24.21x24.21)
7133SA35J FAQ
1.How can I place an order for 7133SA35J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133SA35J 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 7133SA35J reliable?
The price and inventory of 7133SA35J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133SA35J is usually 5 days.
3.What payment methods are accepted for 7133SA35J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133SA35J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133SA35J?
7133SA35J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133SA35J 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 7133SA35J?
For technical support, including 7133SA35J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133SA35J requirements.
6.How does Aetrix verify that 7133SA35J is sourced from the original manufacturer or authorized distributors?
All 7133SA35J 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 7133SA35J meets industry standards.
7.What is the process for return or replacement of 7133SA35J?
All 7133SA35J units undergo pre-shipment inspection (PSI). If there is an issue with 7133SA35J, 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 7133SA35J part is unused and in its original packaging.
Return procedure for 7133SA35J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133SA35J 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…
