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Renesas 70V3379S4PRF8
- Part No.:
- 70V3379S4PRF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 128-LQFP
- Datasheet:
-
70V3379S4PRF8.pdf
- Description:
- IC SRAM 576KBIT PARALLEL 128TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,283
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Product details
Overview
70V3379S4PRF8 from Integrated Device Technology is a high-speed 32K × 18-bit synchronous dual-port static RAM with pipelined output, 3.3V core supply, and selectable 3.3V/2.5V I/O interface per port. It supports simultaneous left/right port access, 133MHz operation (7.5ns cycle time), and industrial temperature range (–40°C to +85°C). Used in telecom line cards, network packet buffers, and real-time DSP co-processing systems.
For engineers reviewing the 70V3379S4PRF8 datasheet, 70V3379S4PRF8 pinout, 70V3379S4PRF8 application, or 70V3379S4PRF8 equivalent, key selection criteria include pipelined read latency (4.2ns max), dual-voltage I/O flexibility (OPTL/OPTR-controlled), counter-enable address sequencing, and depth-expansion support via independent CE0/CE1 enables on both ports.
Technical Context
The 70V3379S4PRF8 implements true dual-port SRAM cells with fully synchronous register-based inputs on both ports-address, data, and control signals all clocked on the rising edge of CLKL/CLKR. Its pipelined output mode introduces one-cycle latency for read data, enabling deterministic timing at 133MHz.
Each port features independent power domains: VDD (3.3V ±150mV) for core logic and separate VDDQL/VDDQR (3.3V ±150mV or 2.5V ±125mV) for I/Os, selected by OPTL/OPTR pins. The device includes asynchronous OE, address strobe (ADSL/ADSR), and counter control (CNTENL/CNTRSTL, CNTENR/CNTRSTR) for burst-addressing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 32K × 18 bits (576 Kbit total); supports concurrent read/write on left and right ports |
| Clock Cycle Time | 7.5 ns minimum (133 MHz operation); enables 9.6 Gbps aggregate bandwidth |
| Access Time (tCD2) | 4.2 ns maximum (pipelined mode); defines critical path from CLK to valid Q output |
| I/O Voltage Support | Selectable 3.3V or 2.5V per port via OPTL/OPTR; allows mixed-voltage system interfacing |
| Operating Temperature | –40°C to +85°C (industrial grade); validated for extended thermal cycling in base station hardware |
| Power Supply | VDD = 3.3V ±150 mV (core); VDDQ = 2.5V ±125 mV or 3.3V ±150 mV (I/O); decoupling required per port |
| Package | 128-pin TQFP (PKG128); 14 mm × 20 mm body, 0.5 mm pitch; RoHS-compliant, green variant |
Pinout & Package
70V3379S4PRF8 is packaged in a 128-pin Thin Quad Flat Package (TQFP, PKG128) with 0.5 mm lead pitch and 14 mm × 20 mm footprint. All VDD pins require 3.3V supply; VDDQL/VDDQR must match OPTL/OPTR voltage selection (3.3V if VIH, 2.5V if VIL); all VSS pins connect to ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKL / CLKR | Port clock input | Synchronous edge-trigger for all registered inputs; rising edge clocks address/data/control registers |
| A0L–A14L / A0R–A14R | Address inputs | 15-bit address bus per port; supports 32K depth addressing (215 = 32,768) |
| I/O0L–I/O17L / I/O0R–I/O17R | Bidirectional data I/O | 18-bit data bus per port; byte enables UBL/LBL and UBR/LBR allow 9-bit granularity writes |
| CE0L/CE1L / CE0R/CE1R | Chip enable pair | Dual enables permit depth expansion without external logic; CE0L=LOW & CE1L=HIGH enables left port |
| R/WL / R/WR | Read/write control | Active-HIGH write enable; synchronous with clock; determines direction of data flow per port |
| OEL / OER | Output enable | Asynchronous control; overrides clocked outputs to high-impedance state for bus sharing |
| ADSL / ADSR | Address strobe | When LOW, loads external address into internal latch; when HIGH, enables internal counter mode |
| CNTENL/CNTRSTL / CNTENR/CNTRSTR | Counter control | Enable/disable and reset 15-bit address counter for burst sequential access without external address generation |
| OPTL / OPTR | I/O voltage select | Set to VIH (3.3V) or VIL (0V) to configure corresponding VDDQX supply voltage and input thresholds |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port architecture | Enables simultaneous, independent read/write access to same memory location-critical for producer-consumer FIFOs in packet switching |
| Pipelined output mode | Guarantees fixed 1-cycle read latency (tCD2 ≤ 4.2 ns), simplifying timing closure in high-frequency synchronous designs |
| Independent I/O voltage selection | OPTL/OPTR pins allow left port at 3.3V and right port at 2.5V-enables seamless interfacing between legacy and low-voltage ASICs |
| Hardware address counter | CNTEN/ADSL-driven 15-bit counter eliminates need for external address sequencer in burst DMA transfers |
| Depth-expansion chip enables | Dual CE0/CE1 per port permits stacking multiple devices vertically without glue logic-reduces BOM count and PCB area |
| Low-power standby modes | ISB3 = 6 mA typical full standby (CMOS-level inputs); ISB2 = 190 mA typical one-port active-optimized for bursty traffic patterns |
Applications
| Telecom Line Card Buffering | Real-Time DSP Co-Processing |
|---|---|
Use Scenario: Storing incoming/outgoing ATM or Ethernet frames in carrier-grade access equipment with strict jitter and latency budgets. IC Role / Device Role / Timing Role: Dual-port RAM acts as zero-wait-state shared memory between ingress PHY processor (left port) and egress scheduler ASIC (right port). Use Value: Simultaneous access eliminates arbitration overhead; 4.2 ns tCD2 ensures sub-5 ns frame header lookup latency critical for <10 µs forwarding decisions. |
Use Scenario: Real-time audio/video processing where a DSP core writes filtered samples while a microcontroller reads results for display or storage. IC Role / Device Role / Timing Role: Serves as ping-pong buffer memory with pipelined reads synchronized to DSP clock domain and writes aligned to MCU bus timing. Use Value: Independent 3.3V/2.5V I/O support allows direct connection to 2.5V DSP data bus and 3.3V ARM controller-no level shifters required. |
| Industrial PLC Data Exchange | Test Equipment Pattern Memory |
Use Scenario: High-reliability programmable logic controller requiring deterministic I/O scan cycles across multiple fieldbus masters (Profibus, EtherCAT). IC Role / Device Role / Timing Role: Provides shared configuration and status memory accessible concurrently by safety CPU (left port) and communication coprocessor (right port). Use Value: –40°C to +85°C rating ensures operation in uncontrolled cabinet environments; CE0/CE1 enables allow hot-swap memory bank reconfiguration. |
Use Scenario: Automated test equipment storing multi-gigabit stimulus/response vectors for semiconductor wafer probing. IC Role / Device Role / Timing Role: Functions as high-bandwidth pattern memory accessed by FPGA pattern generator (left port) and comparator (right port) in lockstep. Use Value: 133 MHz operation delivers 9.6 Gbps bandwidth-supports >1 Gb/s vector streaming; counter mode enables rapid sequential address stepping without host intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1375BV33-167AXC | 167 MHz max (6 ns tCYC), 32K × 18, but only 3.3V I/O-no 2.5V option; no address counter; different pinout | Requires external level shifting for 2.5V systems; lacks counter mode for burst DMA | Choose when maximum speed (167 MHz) is mandatory and voltage flexibility is not needed. |
| AS7C33256PFSIG | 32K × 18, 133 MHz, but asynchronous (not synchronous/pipelined); no clocked registers; higher tAA (12 ns) | Introduces variable latency; unsuitable for deterministic timing-critical pipelines | Acceptable only in non-pipelined, lower-frequency control-plane applications where setup/hold margins are generous. |
Compared with CY7C1375BV33-167AXC and AS7C33256PFSIG, the 70V3379S4PRF8 uniquely combines pipelined determinism, dual-voltage I/O per port, and integrated address counter-making it the only choice for high-throughput, mixed-voltage, burst-oriented embedded memory subsystems.
Availability
70V3379S4PRF8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and test equipment applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for 70V3379S4PRF8 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
Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions for communications and computing markets.
The 70V3379S4PRF8 belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for deterministic, low-latency shared-memory architectures in networking, DSP, and real-time control systems.
FAQ
What is the maximum operating frequency of the 70V3379S4PRF8?
The 70V3379S4PRF8 supports a minimum clock cycle time of 7.5 ns, enabling reliable operation at 133 MHz. This is specified across the full industrial temperature range (–40°C to +85°C) and validated with tCD2 ≤ 4.2 ns in pipelined mode. The '4' in the part number denotes the 4.2 ns access time grade.
Does the 70V3379S4PRF8 support independent voltage operation on its two ports?
Yes, the 70V3379S4PRF8 supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL to VIH configures the left port for 3.3V I/O levels (requiring VDDQL = 3.3V), while setting OPTR to VIL configures the right port for 2.5V I/O levels (requiring VDDQR = 2.5V). This enables mixed-voltage system integration without external level shifters.
How does the address counter function in the 70V3379S4PRF8?
The 70V3379S4PRF8 includes dedicated counter control pins (CNTENL/CNTRSTL and CNTENR/CNTRSTR) that drive an internal 15-bit address counter. When ADSL = VIH and CNTENL = VIL, the counter advances on each CLKL rising edge-automatically generating sequential addresses for burst transfers without external address generation logic.
What package type is used for the 70V3379S4PRF8?
The 70V3379S4PRF8 uses a 128-pin Thin Quad Flat Package (TQFP), designated PKG128 in IDT documentation. It measures 14 mm × 20 mm with 0.5 mm lead pitch, features gull-wing leads, and complies with RoHS and green manufacturing standards.
Can the 70V3379S4PRF8 be used for depth expansion without additional logic?
Yes, the 70V3379S4PRF8 supports depth expansion using its dual chip enables (CE0L/CE1L and CE0R/CE1R). By tying CE0 of one device to CE1 of the next and cascading address lines, multiple 70V3379S4PRF8 units can be stacked to increase memory depth-no external decoding logic is required, reducing design complexity and board space.
70V3379S4PRF8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 128-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Synchronous
- Memory Size:
- 576Kbit
- Memory Organization:
- 32K x 18
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 4.2 ns
- Voltage - Supply:
- 3.15V ~ 3.45V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 128-TQFP (14x20)
70V3379S4PRF8 FAQ
1.How can I place an order for 70V3379S4PRF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V3379S4PRF8 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 70V3379S4PRF8 reliable?
The price and inventory of 70V3379S4PRF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V3379S4PRF8 is usually 5 days.
3.What payment methods are accepted for 70V3379S4PRF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V3379S4PRF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V3379S4PRF8?
70V3379S4PRF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V3379S4PRF8 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 70V3379S4PRF8?
For technical support, including 70V3379S4PRF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V3379S4PRF8 requirements.
6.How does Aetrix verify that 70V3379S4PRF8 is sourced from the original manufacturer or authorized distributors?
All 70V3379S4PRF8 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 70V3379S4PRF8 meets industry standards.
7.What is the process for return or replacement of 70V3379S4PRF8?
All 70V3379S4PRF8 units undergo pre-shipment inspection (PSI). If there is an issue with 70V3379S4PRF8, 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 70V3379S4PRF8 part is unused and in its original packaging.
Return procedure for 70V3379S4PRF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V3379S4PRF8 Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
Microchip Technology
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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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