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Renesas 7134SA55JI
- Part No.:
- 7134SA55JI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134SA55JI.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,917
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Product details
Overview
7134SA55JI from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent asynchronous left/right ports, 55 ns maximum read cycle time (tRC), TTL-compatible 5 V ±10% operation, and industrial temperature range (–40°C to +85°C). It enables real-time inter-processor communication in embedded control systems requiring zero-wait-state memory arbitration.
For engineers reviewing the 7134SA55JI datasheet, 7134SA55JI pinout, 7134SA55JI application, or 7134SA55JI equivalent, this page delivers verified timing specs (tAA ≤ 55 ns, tAOE ≤ 30 ns), power metrics (ISB1 = 25 mA typ., ISB3 = 1.0 mA typ.), package mapping (52-pin PLCC), and confirmed alternatives for dual-port SRAM migration paths.
Technical Context
The 7134SA55JI implements fully asynchronous dual-port architecture with separate address, data, and control 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 concurrent access to any memory location when externally managed.
It uses CMOS high-performance fabrication for low active power (ICC = 140 mA typ. at fMAX) and supports full standby mode via CMOS-level CE inputs (ISB3 ≤ 1.0 mA). Unlike LA variants, the SA version lacks battery backup retention but delivers identical speed and interface compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits (32 Kbit); supports independent 8-bit parallel reads/writes on both ports simultaneously |
| Read Cycle Time (tRC) | 55 ns max; defines minimum interval between successive read operations on same port |
| Address Access Time (tAA) | 55 ns max; determines latency from stable address to valid data output |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V); single-rail TTL-compatible operation without level-shifting |
| Operating Temperature | –40°C to +85°C; qualified for industrial-grade reliability in harsh environments |
| Standby Current (ISB1) | 25 mA typical with TTL-level CE high; enables low-power idle state during bus arbitration pauses |
| Package | 52-pin PLCC (PLG52); surface-mount compatible with standard reflow profiles and IPC-7351 footprint |
Pinout & Package
7134SA55JI is supplied in a 52-pin Plastic Leaded Chip Carrier (PLCC, package code PLG52) with J-lead configuration and 0.050″ pitch. The body measures approximately 0.75″ × 0.75″ × 0.17″ and is lead-free (green) compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left port address inputs | 12-bit address bus for left-side memory access (4K = 212) |
| A0R–A11R | Right port address inputs | Independent 12-bit address bus for right-side access; no shared address lines |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit tri-state I/O bus; direction controlled by R/WL and OEL |
| I/O0R–I/O7R | Right port bidirectional data | Electrically isolated 8-bit bus; prevents contention without external isolation |
| CEL, CER | Chip enable (left/right) | Active-low enables respective port's internal circuitry; drives ISB1/ISB2 current states |
| OEL, OER | Output enable (left/right) | Active-low enables output drivers; high-Z when inactive to support bus sharing |
| R/WL, R/WR | Read/write control (left/right) | Active-low selects write mode; high enables read (output driver activation) |
| VCC, GND | Power and ground | Multiple VCC/GND pins distributed across package for noise reduction and decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables independent, unsynchronized read/write cycles on left and right ports-no clock or arbitration logic needed |
| 55 ns maximum access time | Supports high-throughput inter-processor messaging in real-time control loops with deterministic latency |
| TTL-compatible 5 V interface | Direct connection to legacy microcontrollers, FPGAs, and ASICs without voltage translation circuitry |
| Industrial temperature range (–40°C to +85°C) | Validated operation in factory automation, motor drives, and transportation electronics without derating |
| Low standby power (ISB3 = 1.0 mA typ.) | Reduces system-level quiescent consumption during idle periods in battery-backed or energy-sensitive designs |
Applications
| Real-Time Inter-Processor Communication | Digital Signal Processing Buffer |
|---|---|
Use Scenario: Two microcontrollers exchange sensor data and control commands via shared memory without software handshaking. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency mailbox; left port connects to CPU A, right port to CPU B. Use Value: Eliminates wait states and polling overhead-enables deterministic sub-55 ns data transfer between synchronized tasks. | Use Scenario: An FPGA-based FFT engine writes time-domain samples to memory while a DSP reads frequency-domain results. IC Role / Device Role / Timing Role: Provides simultaneous write (FPGA → RAM) and read (DSP ← RAM) paths with independent timing control. Use Value: Sustains continuous data flow at 18.2 MHz (1/55 ns) without pipeline stalls or FIFO buffering complexity. |
| Industrial PLC Memory Co-Processor | Avionics Data Acquisition Interface |
Use Scenario: A safety-critical PLC uses redundant CPUs that monitor each other's status via mirrored memory regions. IC Role / Device Role / Timing Role: Acts as fault-tolerant shared memory with hardware-isolated ports preventing cross-port corruption. Use Value: Enables lock-step comparison and failover decisions within 55 ns-meeting SIL-3 timing constraints. | Use Scenario: Flight data recorder captures analog-to-digital samples while a host processor streams metadata and timestamps. IC Role / Device Role / Timing Role: Left port buffers ADC data at 1 MSPS; right port services host queries for buffered segments. Use Value: Guarantees uninterrupted capture at full rate even during host read bursts-no dropped samples. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1354V25-55AXI | 55 ns access, 4K × 16 organization, 3.3 V core (5 V tolerant I/O), QCC56 package | Wider data bus (16-bit) and lower voltage operation; requires level-shifting for pure 5 V systems | Select when migrating to 3.3 V domains or needing wider word size; not drop-in for 8-bit bus layouts |
| IDT71V3201S100PFGI | 100 MHz (10 ns) synchronous interface, 32K × 16, 3.3 V only, TQFP100 package | Requires clock and control sequencing; incompatible with asynchronous bus protocols | Choose for high-throughput streaming where clocked burst access justifies redesign effort |
Compared with CY7C1354V25-55AXI and IDT71V3201S100PFGI, the 7134SA55JI provides direct 5 V TTL compatibility, true asynchronous operation, and pin-compatible replacement within existing PLCC-52 industrial PCBs-preserving layout, timing margins, and qualification status.
Availability
7134SA55JI is available at Aetrix Electronics and suitable for industrial automation, avionics data acquisition, and real-time inter-processor communication requiring stable component supply across extended product lifecycles.
Supply support for 7134SA55JI 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-acquired from Integrated Device Technology-is engineered for deterministic, contention-managed memory sharing in hard real-time systems where arbitration latency is unacceptable.
FAQ
What is the maximum operating temperature range for the 7134SA55JI?
The 7134SA55JI is rated for industrial temperature operation from –40°C to +85°C. This range is validated per the datasheet's Recommended Operating Conditions table and applies to all DC and AC electrical specifications-including 55 ns timing parameters and standby current limits-without derating. The device does not support military (–55°C to +125°C) or commercial (0°C to +70°C) grades in the JI suffix variant.
Does the 7134SA55JI support battery backup data retention?
No, the 7134SA55JI does not support battery backup data retention. That feature is exclusive to the LA variant (e.g., 7134LA55JI), which guarantees data retention down to VCC = 2.0 V. The SA suffix denotes standard power operation only; its ISB3 standby current is 1.0 mA typical at 5 V, but it loses data below VCC = 4.5 V.
Which package type is used for the 7134SA55JI?
7134SA55JI is packaged in a 52-pin Plastic Leaded Chip Carrier (PLCC) with package code PLG52. This surface-mount package has a 0.75″ × 0.75″ body, J-lead geometry, and complies with RoHS and green (lead-free) requirements per Renesas ordering information.
Can the 7134SA55JI be used with 3.3 V logic interfaces?
No, the 7134SA55JI is strictly a 5 V ±10% device with TTL-compatible input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.2 V) and 5 V output swing. It lacks 3.3 V tolerance or mixed-voltage I/O capability. Direct connection to 3.3 V FPGAs or microcontrollers requires level-shifting circuitry to avoid violating absolute maximum ratings or degrading noise margins.
How many address pins does the 7134SA55JI have per port?
The 7134SA55JI has 12 address pins per port: A0L–A11L for the left port and A0R–A11R for the right port. This matches the 4K (212) memory depth and confirms independent 12-bit addressing-no shared or multiplexed address lines exist between ports.
7134SA55JI 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:
- 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:
- 52-PLCC (19.13x19.13)
7134SA55JI FAQ
1.How can I place an order for 7134SA55JI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA55JI 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 7134SA55JI reliable?
The price and inventory of 7134SA55JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA55JI is usually 5 days.
3.What payment methods are accepted for 7134SA55JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA55JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA55JI?
7134SA55JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA55JI 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 7134SA55JI?
For technical support, including 7134SA55JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA55JI requirements.
6.How does Aetrix verify that 7134SA55JI is sourced from the original manufacturer or authorized distributors?
All 7134SA55JI 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 7134SA55JI meets industry standards.
7.What is the process for return or replacement of 7134SA55JI?
All 7134SA55JI units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA55JI, 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 7134SA55JI part is unused and in its original packaging.
Return procedure for 7134SA55JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134SA55JI Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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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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