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Renesas 7134SA25JI
- Part No.:
- 7134SA25JI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134SA25JI.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,670
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Product details
Overview
7134SA25JI from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent asynchronous left/right ports, 25 ns maximum access time (industrial grade), TTL-compatible 5 V ±10% operation, and 48-pin PLCC packaging. It enables concurrent read/write access in real-time digital signal processing systems requiring deterministic memory arbitration.
For engineers reviewing the 7134SA25JI datasheet, 7134SA25JI pinout, 7134SA25JI application, or 7134SA25JI equivalent, this device supports contention-aware dual-port memory interfacing in industrial embedded controllers, radar signal processors, and FPGA co-processor buffers where wait-state-free operation is critical.
Technical Context
The 7134SA25JI implements fully asynchronous dual-port architecture with separate address, control, and bidirectional 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.
It uses CMOS process technology to achieve 700 mW typical active power and 25 mA ISB1 standby current at industrial temperature (–40°C to +85°C). The SA variant provides standard power consumption without battery backup; data retention is not supported.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 8 (32 Kbit), two independent 4K-word × 8-bit ports |
| Access Time (max) | 25 ns - guarantees deterministic read latency for industrial-grade real-time systems |
| Supply Voltage | 5.0 V ±10% - compatible with legacy TTL logic families and 5 V system rails |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation and motor drives |
| Power Consumption | 700 mW typical active, 25 mA ISB1 standby - enables thermal management in dense PCB layouts |
| Package | 52-pin PLCC (PLG52) - surface-mountable, moisture-sensitive level 3, RoHS-compliant |
| Interface Compatibility | TTL input thresholds (VIH = 2.2 V min, VIL = 0.8 V max) - ensures interoperability with 5 V microcontrollers and FPGAs |
Pinout & Package
7134SA25JI is housed in a 52-pin Plastic Leaded Chip Carrier (PLCC, package code PLG52) with J-lead configuration and 0.050" lead pitch. The package measures approximately 0.75" × 0.75" × 0.17" and is moisture-sensitive level 3.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left port address inputs | 12-bit address bus for left-side memory access; supports full 4K addressing |
| A0R–A11R | Right port address inputs | Independent 12-bit address bus enabling simultaneous access to same or different locations |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; high-impedance when OEL = VIH or CEL = VIH |
| I/O0R–I/O7R | Right port bidirectional data | Electrically isolated 8-bit path; no internal bus contention handling |
| CEL / CER | Chip enable (left/right) | Active-low port selection; controls power-down mode (ISB1/ISB2) when deasserted |
| OEL / OER | Output enable (left/right) | Active-low control of output drivers; allows tri-state sharing of data buses |
| R/WL / R/WR | Read/write control (left/right) | Active-low write strobe; determines direction of data flow on respective I/O bus |
| VCC | Power supply | Single 5 V ±10% rail; all VCC pins must be decoupled locally |
| GND | Ground reference | Common ground for both ports; multiple GND pins reduce ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables independent, unsynchronized read/write cycles on left and right ports without clock or handshake overhead |
| No on-chip arbitration logic | Reduces gate count and propagation delay; external arbitration required for conflict resolution |
| Automatic power-down via CE | Each port enters low-power standby (ISB1/ISB2) when its CE is high, minimizing system-level idle power |
| TTL-compatible interface | Eliminates level-shifting components when interfacing with legacy 5 V microcontrollers, DSPs, or FPGAs |
| Industrial temperature qualification | Validated operation from –40°C to +85°C ensures reliability in uncontrolled industrial enclosures |
Applications
| Industrial Motion Controller | Radar Signal Buffer |
|---|---|
|
Use Scenario: Real-time servo loop execution with simultaneous position feedback capture and command generation. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared memory between motion CPU (left port) and FPGA-based PWM generator (right port), eliminating bus contention delays. Use Value: 25 ns access enables sub-microsecond data exchange, supporting 100 kHz closed-loop update rates without wait states. |
Use Scenario: High-throughput digitized RF sample buffering prior to FFT processing in pulsed radar systems. IC Role / Device Role / Timing Role: Left port accepts ADC samples at 40 MSPS; right port streams burst data to DSP core for real-time correlation. Use Value: Asynchronous ports sustain sustained 40 MB/s throughput across independent data paths without arbitration stalls. |
| FPGA Co-Processor Interface | Digital Audio Mixer Memory |
|
Use Scenario: Offloading compute-intensive filtering tasks from host MCU to FPGA while maintaining low-latency parameter updates. IC Role / Device Role / Timing Role: Host MCU writes filter coefficients via left port; FPGA reads coefficients and processes audio stream via right port. Use Value: Independent control lines allow coefficient updates mid-audio-frame without interrupting real-time audio path timing. |
Use Scenario: Storing and crossfading between multiple audio channel buffers in professional mixing consoles. IC Role / Device Role / Timing Role: Left port handles DMA writes from ADC channels; right port feeds DAC engine with time-aligned sample blocks. Use Value: 5 V TTL compatibility simplifies integration with legacy audio ASICs; 25 ns access supports 192 kHz/24-bit multi-channel operation. |
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-25AC | 4K × 16 organization, 25 ns access, 3.3 V core (5 V tolerant I/O), 100-pin TQFP | Higher density but wider data bus; requires voltage translation in pure 5 V systems | Choose when 16-bit data path or lower active power (120 mW typ.) is prioritized over pin compatibility |
| IDT71V3577SA25PFGI | 4K × 8, 25 ns, 3.3 V supply, 52-pin PLCC, integrated busy flag | Lower voltage operation reduces power and heat; busy flag simplifies external arbitration | Prefer for new 3.3 V designs needing hardware contention detection; not drop-in replaceable due to VCC and signaling differences |
Compared with CY7C1352V-25AC and IDT71V3577SA25PFGI, the 7134SA25JI offers direct 5 V TTL compatibility and identical PLCC footprint, making it optimal for legacy industrial upgrades where board rework must be avoided and system voltage remains fixed at 5 V.
Availability
7134SA25JI is available at Aetrix Electronics and suitable for industrial motion controllers, radar signal processors, FPGA co-processor interfaces, and digital audio mixers requiring stable component supply across extended product lifecycles.
Supply support for 7134SA25JI 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 trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.
The IDT7134 family was originally developed by Integrated Device Technology and acquired by Renesas; it targets deterministic, wait-state-free memory interfacing in real-time embedded systems where external arbitration is feasible.
FAQ
What is the operating temperature range for the 7134SA25JI?
The 7134SA25JI is rated for industrial temperature operation from –40°C to +85°C. This specification is validated per Renesas' industrial-grade qualification standards and applies to all DC and AC electrical parameters in the datasheet under 5.0 V ±10% supply conditions. The "I" suffix in the part number explicitly denotes this industrial temperature grade.
Does the 7134SA25JI support battery backup or data retention below 5 V?
No, the 7134SA25JI does not support battery backup or low-voltage data retention. Only the LA variant (e.g., 7134LA25JI) provides 2 V data retention capability. The "SA" in 7134SA25JI indicates Standard Power, with no VDR specification - operation below 4.5 V is outside guaranteed limits and may result in data loss.
Is the 7134SA25JI pin-compatible with other speed grades in the same package?
Yes, all 7134SA variants in the PLG52 (52-pin PLCC) package - including 7134SA20JG, 7134SA25JI, 7134SA45JG, and 7134SA55JG - share identical pinout, footprint, and signal assignments. Speed grade changes affect only access timing parameters (tAA, tRC, etc.), not physical or logical connectivity.
What is the maximum clock frequency supported by the 7134SA25JI for synchronous interface use?
The 7134SA25JI is a fully asynchronous device with no internal clock; it does not specify or require a clock input. Its 25 ns access time translates to a maximum effective cycle rate of 40 MHz (1/25 ns) for consecutive read or write operations, but timing is governed solely by setup/hold and enable assertion/deassertion windows-not by a system clock.
Can both ports of the 7134SA25JI access the same memory location simultaneously?
Yes, both ports can address the same memory location concurrently, but the 7134SA25JI provides no hardware arbitration or collision detection. If one port writes while the other reads the same address, the read result is undefined (may reflect pre-write or post-write data). System-level arbitration logic must prevent such contention to ensure data integrity.
7134SA25JI 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:
- 25ns
- Access Time:
- 25 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)
7134SA25JI FAQ
1.How can I place an order for 7134SA25JI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA25JI 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 7134SA25JI reliable?
The price and inventory of 7134SA25JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA25JI is usually 5 days.
3.What payment methods are accepted for 7134SA25JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA25JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA25JI?
7134SA25JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA25JI 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 7134SA25JI?
For technical support, including 7134SA25JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA25JI requirements.
6.How does Aetrix verify that 7134SA25JI is sourced from the original manufacturer or authorized distributors?
All 7134SA25JI 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 7134SA25JI meets industry standards.
7.What is the process for return or replacement of 7134SA25JI?
All 7134SA25JI units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA25JI, 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 7134SA25JI part is unused and in its original packaging.
Return procedure for 7134SA25JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134SA25JI Tags
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