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Renesas 70T3319S133BF8
- Part No.:
- 70T3319S133BF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 208-LFBGA
- Datasheet:
-
70T3319S133BF8.pdf
- Description:
- IC SRAM 4.5MBIT PAR 208CABGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
70T3319S133BF8 from Integrated Device Technology is a high-speed synchronous dual-port static RAM with 256K × 18-bit organization (4.6 Mbit), 2.5V core supply, and independently configurable 2.5V/3.3V I/O interfaces per port. It supports pipelined or flow-through output modes, features dual chip enables for depth expansion, and delivers 4.2ns access time at 133MHz operation across industrial temperature range (–40°C to +85°C). It is used in real-time packet buffering and inter-processor communication where simultaneous read/write access to shared memory is required.
For engineers reviewing the 70T3319S133BF8 datasheet, 70T3319S133BF8 pinout, 70T3319S133BF8 application, or 70T3319S133BF8 equivalent, key selection criteria include its dual-port architecture with independent clock domains, JTAG-compliant IEEE 1149.1 test support, collision detection and interrupt flags, and selectable voltage interface per port - all critical for deterministic latency in telecom and embedded control systems.
Technical Context
The 70T3319S133BF8 implements true dual-port SRAM cells enabling concurrent access to any memory location from left and right ports without arbitration. Its fully synchronous design includes registered address, data, and control inputs on both ports, achieving 1.5ns setup and 0.5ns hold times at 200MHz.
Each port supports independent configuration via OPTL/OPTR pins to operate I/Os at either 2.5V or 3.3V levels, with corresponding VDDQL/VDDQR supplies. The device integrates address counter logic with ADS strobe, CNTEN enable, and REPEAT reset functionality - enabling burst-mode sequential addressing without external counters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256K × 18-bit (4.6 Mbit); A18 is NC - fixed 18-bit data bus width per port |
| Access Time (tCD) | 4.2ns max (pipelined mode); defines minimum clock-to-data-out latency for timing-critical read paths |
| Clock Cycle Time | 7.5ns min (133MHz) in pipelined mode; enables 14 Gbps aggregate bandwidth across both ports |
| Supply Voltages | VDD = 2.5V ±100mV (core); VDDQL/VDDQR = 2.5V or 3.3V ±150mV (I/O); supports mixed-voltage system interfacing |
| Operating Temperature | –40°C to +85°C (industrial grade); validated for continuous operation under thermal stress in base station and industrial PLC environments |
| Power Consumption | 260mA max dynamic current (both ports active at 133MHz); 5mA full standby current with CMOS-level CE asserts |
| JTAG Support | IEEE 1149.1 compliant (TCK, TMS, TDI, TDO, TRST); enables boundary-scan testing without functional interruption |
Pinout & Package
70T3319S133BF8 is packaged in a 256-pin Ball Grid Array (BGA) with 1.0mm ball pitch and 17mm × 17mm body size. Pin assignments are defined per port (left/right), with dedicated clock, address, data I/O, control (CE0/CE1, R/W, OE, UB/LB), mode (PL/FT, OPT), and status (INT, COLL) signals. All VDD pins connect to 2.5V; VDDQ pins route to selected I/O voltage per port.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKL / CLKR | Port-specific clock input | Synchronous edge-triggered timing reference for all registered inputs/outputs on respective port |
| A0L–A17L / A0R–A17R | Address inputs | 18-bit address bus per port; A18 is NC - limits addressing to 256K depth |
| I/O0L–I/O17L / I/O0R–I/O17R | Bidirectional data I/O | 18-bit parallel data path per port; byte enables (UBL/LBL, UBR/LBR) allow partial-word writes |
| CE0L/CE1L / CE0R/CE1R | Dual chip enables | Enable/disable port with two independent CE inputs - supports depth expansion without external logic |
| OPTL / OPTR | I/O voltage select | Configures VDDQX interface level: VDD = 2.5V → 3.3V I/O; VSS = 0V → 2.5V I/O |
| ZZL / ZZR | Sleep mode control | Asserting high disables dynamic inputs (except JTAG), reducing current to 5mA while preserving state |
| INTL / INTR / COLL / COLR | Status flags | Open-drain outputs signaling interrupt or simultaneous access (collision) on respective port |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port architecture | Enables simultaneous, independent read/write access to same memory location - eliminates arbitration delay in real-time inter-processor links |
| Selectable pipelined or flow-through output | Pipelined mode reduces tCD to 4.2ns at 133MHz; flow-through mode avoids pipeline latency for deterministic single-cycle reads |
| Dual-cycle deselect (DCD) | Prevents metastability during rapid port disable/enable transitions - ensures clean bus release in burst-mode systems |
| Independent I/O voltage per port | OPTL/OPTR pins allow left port at 3.3V and right port at 2.5V - simplifies interfacing between legacy and modern logic families |
| Integrated address counter with ADS/CNTEN/REPEAT | Eliminates need for external counter IC in sequential-access applications like FIFO emulation or DMA buffer management |
| JTAG boundary-scan compliance | Full IEEE 1149.1 support enables production test and debug without requiring functional access to memory contents |
Applications
| Telecom Packet Buffering | Real-Time Industrial PLC |
|---|---|
|
Use Scenario: Storing incoming/outgoing Ethernet frames in a line card where ingress and egress processors access shared memory concurrently. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency shared buffer; left port handles packet write from MAC, right port serves read for forwarding engine. Use Value: 4.2ns pipelined access and collision detection prevent data corruption during simultaneous access - essential for sub-microsecond packet processing deadlines. |
Use Scenario: Coordinating motion control commands between FPGA-based trajectory planner and microcontroller-based safety monitor in CNC machinery. IC Role / Device Role / Timing Role: Memory bridge enabling deterministic, lock-free exchange of position setpoints and status flags between asynchronous control domains. Use Value: Independent 133MHz clocks per port and interrupt flags allow immediate notification of command updates - eliminating polling overhead and jitter. |
| Avionics Data Concentrator | Medical Imaging Pipeline |
|
Use Scenario: Aggregating sensor data from multiple ARINC-429 receivers into a central processor for flight control computation. IC Role / Device Role / Timing Role: High-reliability dual-port RAM buffers time-stamped telemetry packets; left port receives serial data, right port feeds DSP core. Use Value: Industrial temperature rating (–40°C to +85°C) and JTAG testability meet DO-254 hardware assurance requirements for airborne systems. |
Use Scenario: Streaming raw X-ray detector pixel data to reconstruction engine while simultaneously feeding preview display subsystem. IC Role / Device Role / Timing Role: Sustained 14 Gbps bandwidth supports 16-bit pixel streams at >85 MHz - enabling real-time image formation without frame drops. Use Value: Pipelined output mode delivers consistent 4.2ns tCD across temperature, ensuring stable pipeline timing for FPGA-based image processors. |
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 | 256K × 18-bit, 3.3V core, 133MHz, 208-pin TQFP; no JTAG, no sleep mode, no independent I/O voltage selection | Lacks industrial temp rating and power management features; requires external level shifters for mixed-voltage systems | Choose when board space permits TQFP and system uses only 3.3V logic; avoid if JTAG test or low-power sleep is required. |
| AS7C3256B-133JCIN | 256K × 18-bit, 3.3V core, 133MHz, 256-pin BGA; no pipelined mode, no address counter, no collision detection | Flow-through only (no pipelined option); no built-in address generation or status flags - increases FPGA logic burden | Choose for cost-sensitive designs where deterministic single-cycle latency suffices and external counter logic is acceptable. |
Compared with CY7C1362BV33-133AXC and AS7C3256B-133JCIN, the 70T3319S133BF8 uniquely combines industrial temperature operation, per-port I/O voltage flexibility, pipelined/flow-through mode selection, and integrated collision/interrupt signaling - reducing system-level complexity in high-assurance, mixed-voltage embedded applications.
Availability
70T3319S133BF8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, avionics, and medical imaging systems requiring stable component supply, long-term lifecycle support, and guaranteed industrial-grade performance.
Supply support for 70T3319S133BF8 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 solutions for communications and computing markets.
The 70T33xx family was designed specifically for high-bandwidth, low-latency inter-processor communication and real-time buffering in telecom, military, and industrial control systems - emphasizing deterministic timing, robust signal integrity, and mixed-voltage interoperability.
FAQ
What is the maximum operating frequency of the 70T3319S133BF8 in pipelined mode?
The 70T3319S133BF8 is rated for 133MHz operation in pipelined mode, with a minimum clock cycle time (tCYC2) of 7.5ns. This specification is guaranteed over the full industrial temperature range (–40°C to +85°C) and applies to both left and right ports independently. The device supports faster grades (e.g., S166, S200) in other variants, but the 70T3319S133BF8 is specifically characterized and screened for 133MHz performance.
Does the 70T3319S133BF8 support independent voltage operation on each port?
Yes, the 70T3319S133BF8 supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL to VDD (2.5V) configures the left port for 3.3V I/O levels with VDDQL = 3.3V; setting it to VSS (0V) configures 2.5V I/O with VDDQL = 2.5V. The same applies independently to the right port. This allows one port to interface with 3.3V FPGAs while the other connects to 2.5V microcontrollers - no external level shifters required.
How does the collision detection feature work on the 70T3319S133BF8?
The 70T3319S133BF8 asserts COLL (left) or COLR (right) open-drain outputs when both ports attempt to access the same memory location in the same clock cycle. These flags are synchronized to the respective port's clock and remain asserted until cleared by subsequent accesses. The 4.2ns collision flag set time (tCOLS) ensures rapid detection, enabling software or hardware arbitration logic to resolve contention before data corruption occurs.
Can the 70T3319S133BF8 be used in flow-through output mode, and what is its access time in that mode?
Yes, the 70T3319S133BF8 supports flow-through output mode when PL/FTL and PL/FTR are driven low. In this mode, data appears at the outputs after a maximum 15ns propagation delay (tCD1) at 133MHz - significantly longer than pipelined mode but providing zero-cycle latency for applications requiring immediate data visibility. Flow-through mode eliminates pipeline register stages, making it ideal for debugging or systems where clock domain crossing must be avoided.
What package type and pin count does the 70T3319S133BF8 use?
The 70T3319S133BF8 uses a 256-pin Ball Grid Array (BGA) package with 1.0mm ball pitch and a 17mm × 17mm body size. This is distinct from the 208-pin fpBGA variant (e.g., 70T3319S133BF) - the "F8" suffix confirms the BC256 package. The pinout includes dedicated power (VDD, VDDQL, VDDQR), ground (VSS), and signal balls for dual-port operation, with NC pins at A18L/A18R as specified in the datasheet.
70T3319S133BF8 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:
- 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:
- 2.4V ~ 2.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 208-CABGA (15x15)
70T3319S133BF8 FAQ
1.How can I place an order for 70T3319S133BF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 70T3319S133BF8 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 70T3319S133BF8 reliable?
The price and inventory of 70T3319S133BF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70T3319S133BF8 is usually 5 days.
3.What payment methods are accepted for 70T3319S133BF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70T3319S133BF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70T3319S133BF8?
70T3319S133BF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70T3319S133BF8 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 70T3319S133BF8?
For technical support, including 70T3319S133BF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70T3319S133BF8 requirements.
6.How does Aetrix verify that 70T3319S133BF8 is sourced from the original manufacturer or authorized distributors?
All 70T3319S133BF8 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 70T3319S133BF8 meets industry standards.
7.What is the process for return or replacement of 70T3319S133BF8?
All 70T3319S133BF8 units undergo pre-shipment inspection (PSI). If there is an issue with 70T3319S133BF8, 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 70T3319S133BF8 part is unused and in its original packaging.
Return procedure for 70T3319S133BF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70T3319S133BF8 Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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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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