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Renesas 7134SA45JI
- Part No.:
- 7134SA45JI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134SA45JI.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,781
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Product details
Overview
7134SA45JI from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent left/right asynchronous ports, 45 ns read cycle time (max), 5 V ±10% single-supply operation, and industrial temperature range (–40°C to +85°C). It enables real-time data exchange in bidirectional communication systems such as video frame buffers and military avionics bus arbiters.
For engineers reviewing the 7134SA45JI datasheet, 7134SA45JI pinout, 7134SA45JI application, or 7134SA45JI equivalent, key selection criteria include dual-port contention management, 45 ns access timing, CE-controlled standby power (ISB1 ≤ 70 mA), and PLCC-52 package compatibility with legacy board layouts.
Technical Context
The 7134SA45JI implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port-no on-chip arbitration logic required. Each port features independent chip enable (CEL/CER), output enable (OEL/OER), and read/write (R/WL/R/WR) controls, enabling external arbitration for simultaneous access.
It uses CMOS process technology to achieve typical active power of 140 mA (both ports active) and supports TTL-compatible signaling. The device enters low-power standby when CE is high, with ISB3 full-standby current as low as 1.0 mA (CMOS-level inputs, f = 0).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits (32 Kbit total); supports independent 8-bit parallel reads/writes on each port |
| Read Cycle Time | 45 ns max; defines minimum interval between successive reads on same port |
| Supply Voltage | 4.5 V to 5.5 V; single 5 V ±10% rail eliminates need for auxiliary supplies |
| Operating Temperature | –40°C to +85°C; qualified for industrial environments including factory automation and transportation control |
| Standby Current (ISB1) | ≤70 mA (TTL-level CE high); enables rapid wake-up without power sequencing delays |
| Input/Output Capacitance | 11 pF typical; ensures signal integrity up to ~30 MHz with standard PCB trace design |
| Package | 52-pin PLCC (PLG52); surface-mount compatible with reflow soldering and mechanical robustness for vibration-prone applications |
Pinout & Package
7134SA45JI is housed in a 52-pin Plastic Leaded Chip Carrier (PLCC, package code PLG52) with J-lead configuration and 0.75″ × 0.75″ footprint. Pin 1 is marked by index notch; body height is 0.17″.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus selecting one of 4K locations for left-side access |
| A0R–A11R | Right-port address inputs | Independent 12-bit address bus for concurrent right-side memory access |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit parallel data path; direction controlled by R/WL and OEL |
| I/O0R–I/O7R | Right-port bidirectional data | Electrically isolated 8-bit path enabling true simultaneous read/write across ports |
| CEL, CER | Chip enable (left/right) | Active-low enables respective port; high state forces port into ISB1/ISB2 standby mode |
| OEL, OER | Output enable (left/right) | Active-low enables output drivers; high places I/O pins in high-impedance state |
| R/WL, R/WR | Read/write control (left/right) | Low = write, high = read; determines data flow direction during enabled cycles |
| VCC, GND | Power and ground | Multiple VCC/GND pins distributed across package to minimize switching noise and IR drop |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables independent, unsynchronized access from two processors or buses without clock domain crossing logic |
| 45 ns maximum access time | Supports real-time video buffering at NTSC/PAL line rates without wait states |
| TTL-compatible I/O levels | Direct interface with legacy 5 V microcontrollers and FPGAs without level-shifting circuitry |
| CE-controlled power-down | Reduces dynamic current to ≤70 mA per port in standby-critical for thermal management in dense modules |
| MIL-PRF-38535 QML-compliant variant available | Same functional design extended to military-grade screening and testing for aerospace deployment |
Applications
| Video Frame Buffer | Avionics Bus Arbiter |
|---|---|
Use Scenario: Storing and synchronizing interlaced video fields in broadcast equipment. IC Role / Device Role / Timing Role: Dual-port SRAM acts as ping-pong buffer-left port writes incoming field while right port reads previous field for display. Use Value: 45 ns tRC enables full 625-line PAL field capture at 50 Hz without pixel loss or timing jitter. | Use Scenario: Managing shared memory between flight control computer and sensor processing unit in UAVs. IC Role / Device Role / Timing Role: Provides contention-managed shared memory space where both processors access identical address locations under external arbitration. Use Value: Independent CE/OE controls allow deterministic latency masking during arbitration handshaking sequences. |
| Industrial PLC I/O Mapper | Digital Signal Processor Co-Processor Interface |
Use Scenario: Mapping real-time I/O status between main controller and modular I/O backplane. IC Role / Device Role / Timing Role: Left port connects to CPU bus; right port interfaces with isolated I/O ASIC-data mirrored with sub-100 ns turnaround. Use Value: Asynchronous operation eliminates synchronization overhead, enabling deterministic <1 µs I/O update latency. | Use Scenario: Offloading FFT coefficient storage from DSP core to reduce internal memory pressure. IC Role / Device Role / Timing Role: DSP writes coefficients via right port while host processor reads results via left port-no software semaphore required. Use Value: 8-bit bidirectional I/O per port matches common DSP data bus widths, avoiding packing/unpacking overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1352V-45AXC | 45 ns access, 4K × 16 organization, 3.3 V supply only | Requires voltage translation for 5 V systems; wider data bus suits DSP-centric designs | Select when migrating to lower-voltage platforms and needing 16-bit data path |
| IDT71V32S45YG8 | 45 ns, 32K × 8, 3.3 V supply, commercial temp only | Larger memory depth but lacks industrial temperature rating and 5 V compatibility | Choose for cost-sensitive commercial systems where extended temperature range is not required |
Compared with CY7C1352V-45AXC and IDT71V32S45YG8, the 7134SA45JI uniquely supports 5 V operation, industrial temperature range, and direct TTL interfacing-making it irreplaceable in legacy industrial and defense upgrades where voltage and thermal compliance are non-negotiable.
Availability
7134SA45JI is available at Aetrix Electronics and suitable for video frame buffering, avionics bus arbitration, and industrial PLC I/O mapping requiring stable component supply across long production lifecycles.
Supply support for 7134SA45JI 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
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.
The IDT7134 family was designed specifically for deterministic, contention-tolerant dual-processor memory sharing in real-time embedded systems-prioritizing timing predictability over density or power efficiency.
FAQ
What is the maximum operating frequency supported by the 7134SA45JI?
The 7134SA45JI does not operate on a clock; it is fully asynchronous. Its performance is defined by timing parameters-not frequency. With a 45 ns read cycle time (tRC), it supports effective throughput up to approximately 22.2 MHz for consecutive reads on a single port. Real-world bandwidth depends on external arbitration and bus protocol overhead, not an internal oscillator.
Does the 7134SA45JI support battery backup for data retention?
No-the 7134SA45JI is the standard-power (SA) variant and does not support battery backup. Only the LA variant (e.g., 7134LA45JI) provides 2 V data retention capability. The SA version draws higher standby current and lacks the low-voltage retention circuitry; using it with a backup battery will not preserve memory contents.
Can both ports of the 7134SA45JI perform simultaneous read operations?
Yes-both ports can execute independent read operations concurrently. The 7134SA45JI allows fully asynchronous access: left port may read address 0x0100 while right port reads address 0x0FFF simultaneously. However, simultaneous access to the *same* memory location requires external arbitration to avoid data contention and undefined output states.
What is the meaning of the 'J' and 'I' suffixes in 7134SA45JI?
In the ordering code 7134SA45JI, 'J' denotes the PLCC-52 package (PLG52), and 'I' specifies the industrial temperature grade (–40°C to +85°C). This matches Renesas' documented ordering convention: J = PLCC, I = Industrial. The full part number confirms it is a 45 ns, SA-power, industrial-grade, PLCC-packaged dual-port SRAM.
Is the 7134SA45JI pin-compatible with other members of the IDT7134 family?
Yes-within the same package type, all IDT7134 variants (e.g., 7134SA25JI, 7134LA45JI) share identical pinouts and electrical behavior. The 7134SA45JI's PLG52 footprint, signal assignments, and DC/AC characteristics are consistent across speed grades and SA/LA versions, enabling drop-in replacement where timing and power budgets permit.
7134SA45JI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-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:
- 4K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 45ns
- Access Time:
- 45 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7134SA45JI FAQ
1.How can I place an order for 7134SA45JI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA45JI 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 7134SA45JI reliable?
The price and inventory of 7134SA45JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA45JI is usually 5 days.
3.What payment methods are accepted for 7134SA45JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA45JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA45JI?
7134SA45JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA45JI 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 7134SA45JI?
For technical support, including 7134SA45JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA45JI requirements.
6.How does Aetrix verify that 7134SA45JI is sourced from the original manufacturer or authorized distributors?
All 7134SA45JI 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 7134SA45JI meets industry standards.
7.What is the process for return or replacement of 7134SA45JI?
All 7134SA45JI units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA45JI, 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 7134SA45JI part is unused and in its original packaging.
Return procedure for 7134SA45JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134SA45JI 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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