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Renesas 70V3399S166BFG8
- Part No.:
- 70V3399S166BFG8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 208-LFBGA
- Datasheet:
-
70V3399S166BFG8.pdf
- Description:
- IC SRAM 2MBIT PARALLEL 208CABGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,458
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Product details
Overview
70V3399S166BFG8 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, 3.6ns clock-to-data), supports selectable 3.3V or 2.5V I/O interfaces per port, and delivers 6Gbps aggregate bandwidth in pipelined output mode. It is used in real-time packet buffering for telecom line cards and FPGA co-processor memory subsystems.
For engineers reviewing the 70V3399S166BFG8 datasheet, 70V3399S166BFG8 pinout, 70V3399S166BFG8 application, or 70V3399S166BFG8 equivalent, key selection criteria include guaranteed 166MHz operation under commercial temperature, pipelined-only output mode on this 128-pin TQFP package, dual chip enable depth expansion capability, and independent VDDQ voltage selection per port via OPTL/OPTR pins.
Technical Context
This device implements full synchronous operation on both ports with registered address, data, and control inputs-enabling minimal 1.7ns setup and 0.5ns hold times at 166MHz. Its self-timed write architecture eliminates external wait-state logic, while dual-cycle deselect (DCD) ensures clean pipelined output transitions during chip disable sequences.
The memory array uses true dual-port SRAM cells, not pseudo-dual-port or FIFO-based structures, allowing concurrent access without arbitration overhead. Address counter features (CNTEN/REPEAT/ADSL) support burst-mode sequential addressing independent of CE0/CE1 state, and JTAG boundary-scan is omitted due to 128-pin TQFP pin-count constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256K × 18 bits (4.5 Mbit total); supports 256K-word depth with 18-bit parallel I/O per port |
| Max Clock Frequency | 166 MHz (6 ns cycle time); enables deterministic timing for hard real-time systems |
| Access Time | 3.6 ns clock-to-data out (pipelined mode); meets sub-4ns latency requirement for high-throughput switch fabric buffers |
| I/O Voltage Support | Selectable 3.3V or 2.5V per port via OPTL/OPTR pins; allows mixed-voltage system interfacing without level shifters |
| Operating Temperature | Commercial grade: 0°C to +70°C; validated for stable operation in telecom chassis environments |
| Power Supply | Core: 3.3V ±150 mV (VDD); I/O: 3.3V or 2.5V ± tolerance (VDDQL/VDDQR); decoupling must follow IDT layout guidelines |
| Package | 128-pin TQFP (14 mm × 20 mm); no JTAG or PL/FT mode support due to pin count limitation |
Pinout & Package
70V3399S166BFG8 is housed in a 128-pin Thin Quad Flatpack (TQFP) with 0.5 mm pitch, body size 14 mm × 20 mm × 1.4 mm. All VDD pins require 3.3V supply; VDDQL/VDDQR must match OPTL/OPTR logic levels (3.3V if VIH, 2.5V if VIL). A17L and A17R are no-connect pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKL / CLKR | Port-synchronous clock input | Registers all address/data/control inputs on rising edge; defines timing reference for both ports independently |
| CE0L/CE1L, CE0R/CE1R | Dual chip enable inputs per port | Enable depth expansion without external logic: CE0X = active-low, CE1X = active-high decode pair |
| R/WL / R/WR | Read/write direction control | Active-high write enable; synchronous with CLK; determines data flow direction per port per cycle |
| OEL / OER | Asynchronous output enable | Tri-states I/O bus immediately (no clock dependency); critical for bus sharing and hot-swap isolation |
| UBL/LBL, UBR/LBR | Byte enable controls | Independent 9-bit upper (I/O9–I/O17) and 9-bit lower (I/O0–I/O8) byte masking per port |
| OPTL / OPTR | I/O voltage select | DC-level input: VIH = 3.3V I/O interface, VIL = 2.5V I/O interface; sets required VDDQX supply voltage |
| ADSL / ADSR | Address strobe enable | Latches current address into internal counter; enables repeat/sequential addressing independent of CE state |
| CNTENL/CNTENR, REPEATL/REPEATR | Counter control signals | Enable auto-increment address counter (CNTEN) or reset to last ADS-loaded address (REPEAT) |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Memory Cells | Enables simultaneous, conflict-free read/write access to identical addresses-eliminates arbitration logic in FPGA+DSP co-processing architectures |
| Pipelined Output Mode Only | Guaranteed 3.6ns tCD2 at 166MHz on 128-pin TQFP; removes flow-through timing uncertainty in high-speed burst transfers |
| Dual Chip Enable Architecture | Supports seamless depth expansion across multiple devices using only CE0/CE1 decode-no external address decoding logic required |
| Independent I/O Voltage Selection | OPTL/OPTR pins allow left port at 3.3V and right port at 2.5V-enables direct interfacing with mixed-voltage FPGAs and ASICs |
| Self-Timed Write Cycle | Internal write timing control eliminates need for external wait-state generation-simplifies timing closure in 166MHz designs |
Applications
| Telecom Packet Buffering | FPGA Co-Processor Memory |
|---|---|
Use Scenario: Storing and forwarding variable-length Ethernet/IP packets in line-rate switching ASICs. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared buffer between ingress parser and egress scheduler; left port accepts packet data, right port supplies it to transmit engine. Use Value: Simultaneous access enables zero-latency handoff between processing stages, sustaining 6 Gbps throughput at 166 MHz without pipeline stalls. | Use Scenario: Providing low-latency, high-bandwidth scratchpad memory for Xilinx Virtex or Intel Stratix FPGA-based digital signal processors. IC Role / Device Role / Timing Role: Off-chip memory extension with deterministic 3.6 ns read latency; synchronized to FPGA clock domains via separate CLKL/CLKR inputs. Use Value: Eliminates need for on-FPGA block RAM partitioning; supports 18-bit parallel data paths matching common DSP word widths. |
| Industrial Motion Control | Real-Time Video Frame Buffering |
Use Scenario: Storing position/velocity setpoints and feedback data in multi-axis servo drive controllers. IC Role / Device Role / Timing Role: Shared memory between ARM-based motion controller (left port) and dedicated motion ASIC (right port) executing closed-loop algorithms. Use Value: True dual-port operation guarantees atomic read-modify-write cycles for critical trajectory updates-no software locks or arbitration delays. | Use Scenario: Holding uncompressed YUV422 video frames for real-time chroma keying and overlay compositing in broadcast equipment. IC Role / Device Role / Timing Role: Frame buffer with independent read (video encoder) and write (image sensor interface) ports operating concurrently at pixel clock rates. Use Value: 256K × 18 capacity stores two full 720p frames; 166 MHz clock supports >100 MHz pixel rates with margin for horizontal blanking. |
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 | 166 MHz, 256K × 18, 128-pin TQFP, but requires fixed 3.3V I/O; no 2.5V option | Suitable where system uses uniform 3.3V signaling; lacks independent VDDQ flexibility | Select when mixed-voltage I/O is unnecessary and Cypress qualification is preferred |
| AS7C3256A-166JCIN | 166 MHz, 256K × 18, 128-pin TQFP, but only commercial temp (0°C to +70°C); no industrial grade variant | Applicable in cost-sensitive commercial gear where extended temperature is not required | Choose for non-telecom consumer applications with strict BOM cost targets |
Compared with CY7C1362BV33-166AXC and AS7C3256A-166JCIN, the 70V3399S166BFG8 uniquely supports per-port 2.5V/3.3V I/O selection and is specified for telecom-grade commercial operation-making it optimal for mixed-voltage, high-reliability embedded systems requiring guaranteed 166MHz timing.
Availability
70V3399S166BFG8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, FPGA acceleration, and broadcast video equipment requiring stable component supply across production lifecycles.
Supply support for 70V3399S166BFG8 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, and RF power solutions for communications and computing markets.
The 70V33xx family was designed specifically for high-bandwidth, low-latency dual-access memory applications in networking, test equipment, and real-time embedded systems-emphasizing deterministic timing, flexible I/O voltage, and depth-expandable architecture.
FAQ
What is the maximum guaranteed operating frequency for the 70V3399S166BFG8?
The 70V3399S166BFG8 is rated for guaranteed operation at 166 MHz (6 ns clock cycle time) under commercial temperature conditions (0°C to +70°C). This is validated by production testing per the datasheet's AC Electrical Characteristics table, with tCYC2 ≤ 6 ns and tCD2 ≤ 3.6 ns. The device does not support 133 MHz industrial-grade operation in this BFG8 (128-pin TQFP) package variant.
Does the 70V3399S166BFG8 support flow-through output mode?
No, the 70V3399S166BFG8 does not support flow-through output mode. As explicitly stated in the datasheet notes for the PKG128 package, "PIPE/FT option in PKG128 is not supported due to limitation in pin count. Device is pipelined outputs only on each port." All timing parameters (e.g., tCD2 = 3.6 ns) and functional descriptions apply exclusively to pipelined operation.
How are the I/O voltage levels configured on the 70V3399S166BFG8?
The 70V3399S166BFG8 uses OPTL and OPTR pins to configure I/O voltage per port: setting OPTL = VIH (3.3V) selects 3.3V I/O levels for the left port and requires VDDQL = 3.3V; setting OPTL = VIL (0V) selects 2.5V I/O levels and requires VDDQL = 2.5V. The same applies independently to OPTR/VDDQR. Core VDD remains fixed at 3.3V ±150 mV in all configurations.
What is the function of the ADSL and ADSR pins on the 70V3399S166BFG8?
ADSL and ADSR are address strobe enable inputs for the left and right ports respectively. When asserted (low), they latch the current address bus value into the internal address counter-enabling automatic sequential addressing via CNTENL/CNTENR. They operate independently of chip enables and allow repeat addressing (via REPEATL/REPEATR) without requiring continuous address bus updates, reducing controller overhead in burst-transfer scenarios.
Is JTAG boundary-scan supported on the 70V3399S166BFG8 package?
No, JTAG boundary-scan is not supported on the 70V3399S166BFG8. The datasheet explicitly states: "Due to limited pin count, JTAG is not supported on the 128-pin TQFP package" and lists TDI, TDO, TCK, TMS, and TRST as NC (no-connect) pins in the PKG128 pin configuration diagram. JTAG functionality is only available on the 208-pin and 256-pin BGA variants of the 70V3399 family.
70V3399S166BFG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 208-LFBGA
- Packaging:
- Tape & Reel (TR)
- 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:
- 208-CABGA (15x15)
70V3399S166BFG8 FAQ
1.How can I place an order for 70V3399S166BFG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V3399S166BFG8 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 70V3399S166BFG8 reliable?
The price and inventory of 70V3399S166BFG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V3399S166BFG8 is usually 5 days.
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Once your 70V3399S166BFG8 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 70V3399S166BFG8?
For technical support, including 70V3399S166BFG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V3399S166BFG8 requirements.
6.How does Aetrix verify that 70V3399S166BFG8 is sourced from the original manufacturer or authorized distributors?
All 70V3399S166BFG8 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 70V3399S166BFG8 meets industry standards.
7.What is the process for return or replacement of 70V3399S166BFG8?
All 70V3399S166BFG8 units undergo pre-shipment inspection (PSI). If there is an issue with 70V3399S166BFG8, 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 70V3399S166BFG8 part is unused and in its original packaging.
Return procedure for 70V3399S166BFG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V3399S166BFG8 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
Microchip Technology
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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
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
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