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Renesas 70V3399S166PRF
- Part No.:
- 70V3399S166PRF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 128-LQFP
- Datasheet:
-
70V3399S166PRF.pdf
- Description:
- IC SRAM 2MBIT PARALLEL 128TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,059
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Product details
Overview
70V3399S166PRF from Integrated Device Technology is a high-speed 256K × 18-bit synchronous dual-port static RAM with true dual-port architecture enabling simultaneous read/write access to the same memory location from independent left and right ports. It operates at 166MHz (6ns cycle time), delivers 6Gbps aggregate bandwidth, supports selectable 3.3V or 2.5V I/O interfaces per port, and features pipelined output mode only (no flow-through option) in its 128-pin TQFP package. It is used in real-time packet buffering for telecom line cards.
For engineers reviewing the 70V3399S166PRF datasheet, 70V3399S166PRF pinout, 70V3399S166PRF application, or 70V3399S166PRF equivalent, key selection criteria include guaranteed 166MHz operation under commercial temperature range (0°C to +70°C), dual chip enable support for depth expansion without external logic, JTAG-compatibility exclusion due to 128-pin TQFP pin count limitation, and mandatory pipelined output configuration.
Technical Context
This device implements fully synchronous dual-port SRAM architecture with independent clock domains (CLKL/CLKR), register-controlled address/data/control inputs, and self-timed write capability to minimize cycle time. Each port includes dedicated byte enables (UBL/LBL, UBR/LBR), address strobe (ADSL/ADSR), counter enable (CNTENL/CNTENR), and repeat (REPEATL/REPEATR) functions for burst address generation.
The core runs on a fixed 3.3V ±150mV supply (VDD), while I/O voltage per port is independently configurable via OPTL/OPTR pins to either 3.3V or 2.5V - requiring corresponding VDDQL/VDDQR supply rails. A17 is a no-connect pin for this variant, confirming its 256K × 18 (not 512K) density mapping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256K × 18 bits (4.5 Mbit total); A17 is NC, confirming 18-bit addressing up to A16 |
| Max Clock Frequency | 166 MHz (6 ns cycle time); validated only for commercial grade (0°C to +70°C) |
| Access Time | 3.6 ns clock-to-data-out (tCD2) in pipelined mode; no flow-through option supported in PKG128 |
| I/O Voltage Support | Selectable 3.3V or 2.5V per port via OPTL/OPTR; VDDQL/VDDQR must match selected level |
| Power Supply | Core: 3.3V ±150 mV (VDD); I/O: 3.3V ±150 mV or 2.5V ±100 mV (VDDQL/VDDQR) |
| Operating Temperature | Commercial grade only: 0°C to +70°C; industrial -40°C to +85°C not supported at 166MHz |
| JTAG Support | Not implemented in 128-pin TQFP package due to insufficient pin count per IEEE 1149.1 requirements |
Pinout & Package
70V3399S166PRF is packaged in a 128-pin Thin Quad Flatpack (TQFP), body size ≈14 mm × 20 mm × 1.4 mm, lead pitch 0.5 mm. Pinout conforms to PKG128 configuration with dedicated left/right port signals, dual chip enables, and no A17 connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKL / CLKR | Port-specific clock inputs | Synchronous edge-triggered timing reference for all control/data/address registers on respective port |
| CE0L/CE1L, CE0R/CE1R | Dual chip enables per port | Enable depth expansion: CE0X = active-low, CE1X = active-high; both required low for full port activation |
| R/WL / R/WR | Read/write direction control | Active-high write enable; synchronous with rising CLK edge; determines data bus direction per access |
| OEL / OER | Asynchronous output enable | Independent tri-state control of I/Ox[0:17] outputs; does not affect internal register timing |
| UBL/LBL, UBR/LBR | Byte enable controls | Separate upper (I/O9–I/O17) and lower (I/O0–I/O8) byte masking; double-buffered when pipelined |
| ADSL / ADSR | Address strobe enable | Latches current address into internal counter; enables REPEAT function and burst address generation |
| CNTENL/CNTENR, REPEATL/REPEATR | Counter control signals | Enable auto-incrementing address counter; REPEAT resets counter to last ADS-loaded address |
| OPTL / OPTR | I/O voltage select | VIH = 3.3V I/O interface; VIL = 2.5V I/O interface; sets required VDDQL/VDDQR rail voltage |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables concurrent, independent read/write access to identical addresses - essential for real-time inter-processor communication |
| Pipelined-only output mode | Eliminates flow-through option in 128-pin TQFP; guarantees deterministic 1-cycle latency for timing-critical systems |
| Dual chip enable architecture | Supports seamless depth expansion (e.g., 512K×18) using multiple devices without external decode logic |
| Independent I/O voltage per port | Allows interfacing with mixed-voltage subsystems (e.g., 3.3V FPGA core + 2.5V PHY) without level shifters |
| Address counter with REPEAT | Reduces bus overhead in burst transfers: REPEAT restores last valid ADS address for rapid re-access |
| Self-timed write | Minimizes write cycle time by eliminating external write pulse timing constraints - simplifies controller design |
Applications
| Telecom Packet Buffering | FPGA Co-Processor Interface |
|---|---|
Use Scenario: Storing and forwarding variable-length Ethernet/IP packets between line interface and switch fabric ASICs. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency, contention-free buffer - left port accepts ingress packets, right port feeds egress scheduler. Use Value: Simultaneous access prevents pipeline stalls; 166MHz throughput sustains 6 Gbps line-rate traffic without packet loss. |
Use Scenario: High-bandwidth data exchange between Xilinx Kintex FPGA and ARM-based management processor in embedded base station. IC Role / Device Role / Timing Role: Shared memory resource enabling lock-free producer-consumer communication across clock domains (FPGA fabric vs. ARM AXI). Use Value: Pipelined output ensures predictable 1-cycle read latency; independent I/O voltages match FPGA bank (3.3V) and processor I/O (2.5V). |
| Real-Time Video Frame Store | Digital Signal Processor (DSP) Data Exchange |
Use Scenario: Holding uncompressed 1080p video frames during format conversion (YUV ↔ RGB) in broadcast equipment. IC Role / Device Role / Timing Role: Frame buffer with separate read/write ports synchronized to pixel clock (left) and processing engine clock (right). Use Value: 256K × 18 organization supports dual 1920×1080 buffers; 3.6 ns tCD2 meets sub-10 ns pixel timing budgets. |
Use Scenario: Interfacing TI C66x DSP with external ADC/DAC controllers in radar signal processing chain. IC Role / Device Role / Timing Role: High-speed scratchpad memory for ping-pong DMA transfers between DSP EDMA and analog front-end peripherals. Use Value: Dual CE0/CE1 enables dynamic port disable during DMA bursts; counter+REPEAT accelerates sequential coefficient table reads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1362BV33-166AXC | 256K × 18, 166MHz, 3.3V core/I/O; no voltage-selectable I/O; 165-pin TQFP | Fixed 3.3V I/O only; requires level shifters for 2.5V subsystems; larger footprint | Select when system uses uniform 3.3V signaling and PCB layout accommodates 165-pin TQFP. |
| IDT70V9369S166BG | 256K × 18, 166MHz, 3.3V core; 2.5V/3.3V I/O per port; 208-pin fpBGA | Same I/O flexibility but in BGA package; supports JTAG; higher pin count enables flow-through mode | Select when JTAG debug, flow-through latency, or space-constrained BGA layout is required. |
Compared with CY7C1362BV33-166AXC and IDT70V9369S166BG, the 70V3399S166PRF uniquely offers 128-pin TQFP packaging with per-port I/O voltage selection - optimizing board area and mixed-voltage integration where JTAG and flow-through mode are unnecessary.
Availability
70V3399S166PRF is available at Aetrix Electronics and suitable for telecom infrastructure, FPGA co-processing, real-time video buffering, and DSP data exchange applications requiring stable component supply and commercial-grade 166MHz performance.
Supply support for 70V3399S166PRF 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, designs high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.
The 70V3399S166PRF belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered specifically for low-latency, deterministic memory sharing between asynchronous clock domains in real-time systems.
FAQ
What is the maximum operating frequency of the 70V3399S166PRF?
The 70V3399S166PRF is rated for 166 MHz operation (6 ns cycle time) under commercial temperature conditions (0°C to +70°C). This specification is validated only for the commercial grade; industrial temperature support is limited to 133 MHz per official documentation, and the 70V3399S166PRF part number explicitly denotes the 166 MHz commercial version.
Does the 70V3399S166PRF support flow-through output mode?
No, the 70V3399S166PRF does not support flow-through output mode. Due to pin count limitations in the 128-pin TQFP package (PKG128), the device is configured for pipelined output only - as confirmed in the datasheet note: "PIPE/FT option in PKG128 is not supported… Device is pipelined outputs only on each port."
Can both ports of the 70V3399S166PRF operate at different I/O voltages?
Yes, the 70V3399S166PRF supports independent I/O voltage selection per port: OPTL sets the left port's I/O voltage (3.3V or 2.5V), and OPTR sets the right port's I/O voltage. Corresponding VDDQL and VDDQR supplies must be configured accordingly - enabling direct interfacing with mixed-voltage subsystems without external level shifters.
Is JTAG debugging supported on the 70V3399S166PRF?
No, JTAG is not supported on the 70V3399S166PRF. The 128-pin TQFP package lacks sufficient pins to implement IEEE 1149.1 compliance - as explicitly stated: "Due to limited pin count, JTAG is not supported on the 128-pin TQFP package." JTAG functionality requires the 208-pin or 256-pin BGA variants.
What is the role of the REPEAT signal in the 70V3399S166PRF?
The REPEAT signal in the 70V3399S166PRF resets the internal address counter to the last valid address loaded via ADSL or ADSR. This enables rapid re-access to a known memory location without reloading the address bus - reducing control overhead in burst-oriented applications like FIFO management or coefficient table reads.
70V3399S166PRF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 128-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Synchronous
- Memory Size:
- 2Mbit
- Memory Organization:
- 128K x 18
- Memory Interface:
- Parallel
- Clock Frequency:
- 166 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 3.6 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)
70V3399S166PRF FAQ
1.How can I place an order for 70V3399S166PRF through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V3399S166PRF 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 70V3399S166PRF reliable?
The price and inventory of 70V3399S166PRF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V3399S166PRF is usually 5 days.
3.What payment methods are accepted for 70V3399S166PRF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V3399S166PRF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V3399S166PRF?
70V3399S166PRF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V3399S166PRF 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 70V3399S166PRF?
For technical support, including 70V3399S166PRF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V3399S166PRF requirements.
6.How does Aetrix verify that 70V3399S166PRF is sourced from the original manufacturer or authorized distributors?
All 70V3399S166PRF 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 70V3399S166PRF meets industry standards.
7.What is the process for return or replacement of 70V3399S166PRF?
All 70V3399S166PRF units undergo pre-shipment inspection (PSI). If there is an issue with 70V3399S166PRF, 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 70V3399S166PRF part is unused and in its original packaging.
Return procedure for 70V3399S166PRF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V3399S166PRF 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
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