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Renesas 70V3319S133BCI8
- Part No.:
- 70V3319S133BCI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 256-LBGA
- Datasheet:
-
70V3319S133BCI8.pdf
- Description:
- IC SRAM 4.5MBIT PAR 256CABGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
70V3319S133BCI8 from Integrated Device Technology is a high-speed 256K × 18-bit synchronous dual-port SRAM with true dual-port architecture enabling simultaneous read/write access to the same memory location from independent left and right ports. It operates at 133MHz (7.5ns cycle time), supports selectable 3.3V or 2.5V I/O voltage per port via OPT pins, and delivers pipelined output mode only (no flow-through) in its 128-pin TQFP package. It is designed for real-time data buffering in telecom line cards and packet switching engines.
For engineers reviewing the 70V3319S133BCI8 datasheet, 70V3319S133BCI8 pinout, 70V3319S133BCI8 application, or 70V3319S133BCI8 equivalent, key selection criteria include guaranteed 133MHz operation over –40°C to +85°C, dual chip enables for seamless depth expansion, separate byte controls for 18-bit bus matching, and JTAG-compatibility exclusion due to 128-pin TQFP pin count limitation.
Technical Context
The 70V3319S133BCI8 implements full synchronous operation on both ports with registered address, data, and control inputs-enabling 1.7ns setup and 0.5ns hold times at 133MHz. Its self-timed write architecture minimizes cycle time dependency on external timing margins.
It features dual independent address counters with ADS strobe, CNTEN enable, and REPEAT reset functionality per port-supporting burst-mode sequential addressing without external logic. The device uses LVTTL-compatible signaling with core powered by 3.3V ±150mV and I/Os configurable for either 3.3V or 2.5V via dedicated OPTL/OPTR pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256K × 18 bits (4.5 Mbit); supports 18-bit parallel data path per port |
| Max Clock Frequency | 133MHz (7.5ns cycle time); validated across industrial temperature range (–40°C to +85°C) |
| Access Time | 4.2ns (max) clock-to-data-out in pipelined mode; enables sub-8ns system-level read cycles |
| I/O Voltage Support | Selectable 3.3V or 2.5V per port via OPTL/OPTR; allows mixed-voltage interoperation with legacy and modern logic |
| Operating Temperature | Industrial grade: –40°C to +85°C; suitable for uncontrolled ambient environments in base station hardware |
| Power Supply | Core VDD = 3.3V ±150mV; I/O VDDQ = 3.3V ±150mV or 2.5V ±100mV; decoupling required per port |
| Standby Current | ISB2 = 220mA (max) with one port active; ISB3 = 30mA (max) full standby with CMOS-level inputs |
Pinout & Package
70V3319S133BCI8 is housed in a 128-pin Thin Quad Flatpack (TQFP) with 0.5mm pitch, 14mm × 20mm body, and 1.4mm height. Pin functions are asymmetrically distributed across left (L) and right (R) ports, with dedicated clocks (CLKL/CLKR), chip enables (CE0L/CE1L, CE0R/CE1R), byte enables (UBL/LBL, UBR/LBR), and bidirectional I/O banks (I/O0L–I/O17L, I/O0R–I/O17R).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKL / CLKR | Port-synchronous clock input | Registers all address/data/control signals on rising edge; defines timing domain for each port independently |
| CE0L / CE1L / CE0R / CE1R | Dual chip enable inputs | Enable depth expansion without external logic: CE0X = VIL & CE1X = VIH activates port X |
| UBL / LBL / UBR / LBR | Upper/lower byte enable | Independent 9-bit granularity control: UBL enables I/O9–I/O17L; LBL enables I/O0–I/O8L |
| OPTL / OPTR | I/O voltage select | VIH = 3.3V I/O mode; VIL = 2.5V I/O mode; sets VDDQL/VDDQR supply requirement and VIH/VIL thresholds |
| ADSL / ADSR | Address strobe enable | Latches current address into internal counter; enables burst-mode auto-increment without external address generation |
| CNTENL / CNTENR | Counter enable | Activates internal address counter on rising CLK; allows sequential access without re-driving address bus |
| REPEATL / REPEATR | Counter repeat reset | Resets counter to last ADS-loaded address; supports circular buffer or ping-pong addressing schemes |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Memory Cells | Enables concurrent read/write to identical addresses-critical for real-time FIFOs and shared-memory co-processors |
| Pipelined Output Mode Only | Fixed 1-cycle latency output path in 128-pin TQFP; eliminates flow-through configuration overhead and simplifies timing closure |
| Dual Cycle Deselect (DCD) | Ensures clean bus release during chip disable: outputs enter high-Z after two clock cycles, preventing bus contention |
| Separate Per-Port I/O Voltage Control | Allows left port to interface with 3.3V FPGA while right port connects to 2.5V ASIC-eliminates level-shifter components |
| Automatic Power-Down | CE0/CE1-driven low-power state reduces active standby current to 220mA (max) with one port enabled |
Applications
| Telecom Line Card Buffering | Packet Switching Engine |
|---|---|
Use Scenario: High-throughput buffering of ATM or Ethernet frames between ingress and egress PHYs in carrier-grade line cards. IC Role / Device Role / Timing Role: Dual-port SRAM acts as non-blocking shared memory between upstream scheduler and downstream serializer, synchronized to independent 133MHz clocks. Use Value: Simultaneous access eliminates arbitration delay; 4.2ns tCD2 enables deterministic <8ns read-to-read latency critical for 10Gbps+ throughput. | Use Scenario: Storing forwarding tables and packet descriptors in multi-layer switches requiring concurrent CPU updates and ASIC lookups. IC Role / Device Role / Timing Role: Left port accepts descriptor writes from ARM-based control plane; right port feeds 133MHz lookup engine with zero-wait-state reads. Use Value: Dual CE and byte enables allow partial-table updates without stalling traffic; 220mA ISB2 enables power-gated idle periods during low-load intervals. |
| Industrial Motion Controller | Radar Signal Processing |
Use Scenario: Real-time interpolation buffer between host motion planner and servo drive PWM generators in CNC systems. IC Role / Device Role / Timing Role: Left port receives interpolated position commands from DSP at 133MHz; right port streams time-critical pulse data to FPGA-based PWM modulator. Use Value: ADS/CNTEN/REPEAT support burst-mode trajectory streaming; industrial temp rating ensures reliability in enclosed cabinet environments. | Use Scenario: Storing FFT coefficients and radar cross-section data between ADC sampling and DSP correlation stages in phased-array radar. IC Role / Device Role / Timing Role: Left port captures 18-bit I/Q samples from dual-channel ADC; right port supplies coefficient vectors to correlator at synchronized 133MHz rate. Use Value: 256K × 18 capacity holds >1M complex samples; pipelined output guarantees deterministic 4.2ns data delivery to pipeline-sensitive DSP cores. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1362BV33-133AXC | 133MHz, 256K × 18, 208-pin BGA; supports both pipelined and flow-through modes | Requires PCB redesign for BGA footprint and additional decoupling; lacks REPEAT/ADSR counter features | Choose when flow-through mode or higher pin count for enhanced signal integrity is required |
| AS7C3256A-133JCIN | 133MHz, 256K × 18, 128-pin TQFP; single 3.3V I/O supply only; no OPT pin or dual-voltage support | No per-port I/O voltage flexibility; incompatible with mixed-voltage system architectures | Choose for cost-sensitive designs where both ports interface exclusively with 3.3V logic |
Compared with CY7C1362BV33-133AXC and AS7C3256A-133JCIN, the 70V3319S133BCI8 uniquely delivers per-port 2.5V/3.3V I/O configurability in TQFP packaging and integrated address counter logic-reducing FPGA resource usage and eliminating external address sequencers in burst-oriented systems.
Availability
70V3319S133BCI8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, radar processing, and packet-switching applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 70V3319S133BCI8 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 power management ICs for communications, computing, and industrial markets.
The 70V3319S133BCI8 belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered for deterministic low-latency memory sharing between heterogeneous processors, FPGAs, and ASICs in real-time embedded systems.
FAQ
What is the maximum guaranteed operating frequency of the 70V3319S133BCI8?
The 70V3319S133BCI8 is rated for guaranteed operation up to 133MHz across the full industrial temperature range (–40°C to +85°C). This corresponds to a 7.5ns clock cycle time (tCYC2) and 4.2ns maximum clock-to-data-out (tCD2) in pipelined mode. Performance is validated under worst-case voltage (3.15V VDD) and temperature conditions, with no derating required for industrial-grade use.
Does the 70V3319S133BCI8 support flow-through output mode?
No, the 70V3319S133BCI8 does not support flow-through output mode in its 128-pin TQFP package. Due to pin count limitations, the device is configured for pipelined output mode only (FT/PIPE = VIH hardwired internally). Flow-through mode is available only on larger packages like the 208-pin fpBGA and 256-pin BGA variants of the 70V3319/99 family.
How does the address counter function work on the 70V3319S133BCI8?
The 70V3319S133BCI8 implements independent address counters on each port using ADSL/ADSR (address strobe), CNTENL/CNTENR (counter enable), and REPEATL/REPEATR (repeat reset) signals. When CNTENX = VIL and ADSX is asserted, the counter loads the external address and increments automatically on each subsequent CLKX rising edge-enabling burst-mode sequential access without external address generation logic.
Can both ports of the 70V3319S133BCI8 operate at different I/O voltages?
Yes, the 70V3319S133BCI8 supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL = VIH configures the left port for 3.3V I/O operation (requiring VDDQL = 3.3V), while OPTR = VIL configures the right port for 2.5V I/O (requiring VDDQR = 2.5V). This enables direct interfacing with mixed-voltage SoCs, FPGAs, and ASICs without external level shifters.
Is JTAG boundary scan supported on the 70V3319S133BCI8?
No, JTAG boundary scan is not supported on the 70V3319S133BCI8. Although the 70V3319/99 family includes IEEE 1149.1-compliant JTAG features, the 128-pin TQFP package lacks sufficient pins to implement the required TCK, TMS, TDI, TDO, and TRST signals. JTAG is available only on the 208-pin fpBGA and 256-pin BGA package variants.
70V3319S133BCI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 256-LBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Synchronous
- Memory Size:
- 4.5Mbit
- Memory Organization:
- 256K x 18
- Memory Interface:
- Parallel
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 4.2 ns
- Voltage - Supply:
- 3.15V ~ 3.45V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 256-CABGA (17x17)
70V3319S133BCI8 FAQ
1.How can I place an order for 70V3319S133BCI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V3319S133BCI8 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 70V3319S133BCI8 reliable?
The price and inventory of 70V3319S133BCI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V3319S133BCI8 is usually 5 days.
3.What payment methods are accepted for 70V3319S133BCI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V3319S133BCI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V3319S133BCI8?
70V3319S133BCI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V3319S133BCI8 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 70V3319S133BCI8?
For technical support, including 70V3319S133BCI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V3319S133BCI8 requirements.
6.How does Aetrix verify that 70V3319S133BCI8 is sourced from the original manufacturer or authorized distributors?
All 70V3319S133BCI8 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 70V3319S133BCI8 meets industry standards.
7.What is the process for return or replacement of 70V3319S133BCI8?
All 70V3319S133BCI8 units undergo pre-shipment inspection (PSI). If there is an issue with 70V3319S133BCI8, 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 70V3319S133BCI8 part is unused and in its original packaging.
Return procedure for 70V3319S133BCI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V3319S133BCI8 Tags
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M24C02-WMN6TP
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