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Renesas 70T3799MS166BBG
- Part No.:
- 70T3799MS166BBG
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 324-BGA
- Datasheet:
-
70T3799MS166BBG.pdf
- Description:
- IC SRAM 9MBIT PARALLEL 324PBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,521
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Product details
Overview
70T3799MS166BBG from Integrated Device Technology is a high-speed 256K x 72-bit synchronous dual-port SRAM with true dual-port architecture enabling simultaneous read/write access to the same memory location on independent left and right ports. It operates at 166MHz (6ns cycle time), supports selectable 2.5V or 3.3V I/O interfaces per port, and delivers 23.9Gbps aggregate bandwidth. It is used in high-throughput packet buffering and real-time data coherency applications such as telecom line cards and network processors.
For engineers reviewing the 70T3799MS166BBG datasheet, 70T3799MS166BBG pinout, 70T3799MS166BBG application, or 70T3799MS166BBG equivalent, key selection criteria include pipelined vs. flow-through output mode timing, dual-chip-enable depth expansion capability, JTAG boundary scan support, and independent voltage configuration for each port's I/O supply (VDDQ) and core (VDD).
Technical Context
The 70T3799MS166BBG implements fully synchronous operation on both ports with register-controlled address, data, and control inputs-enabling tight setup/hold margins (1.7ns/0.5ns @ 166MHz). Its dual-port memory array allows concurrent access without arbitration logic, while integrated address counters with repeat and enable features support burst-mode addressing in FIFO-like configurations.
It includes collision detection and interrupt flags for inter-port coordination, sleep mode (ZZL/ZZR) for dynamic power reduction, and dual-cycle deselect (DCD) in pipelined mode. The device uses separate byte enables (BE0–BE7 per port) for fine-grained 9-bit byte control and supports independent VDDQ selection (2.5V or 3.3V) via OPTL/OPTR pins-each port configurable independently.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256K × 72 bits (18Mbit total); supports 256K-word depth with 72-bit parallel I/O per port |
| Max Clock Frequency | 166MHz (6ns cycle time, pipelined mode); enables deterministic low-latency access in real-time systems |
| Access Time (tCD2) | 3.6ns clock-to-data-out (pipelined), critical for meeting tight timing budgets in high-speed bus interfaces |
| I/O Voltage Support | Selectable 2.5V or 3.3V per port via OPTL/OPTR; allows mixed-voltage system integration without level shifters |
| Operating Temperature | Commercial grade only (0°C to +70°C); validated for stable operation in controlled-environment networking equipment |
| Package | 324-pin Green BGA (BBG), 19mm × 19mm, 1.0mm ball pitch; optimized for high-density PCB layouts with thermal management |
| Power Supply | 2.5V ±100mV core (VDD); independent VDDQL/VDDQR at 2.5V or 3.3V; reduces cross-port noise coupling |
Pinout & Package
70T3799MS166BBG is housed in a 324-pin Green Ball Grid Array (BBG) package measuring 19mm × 19mm × 1.76mm with 1.0mm ball pitch. All VDD pins require connection to 2.5V; VDDQ pins must match OPT pin state (2.5V if OPT = VSS, 3.3V if OPT = VDD).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKL / CLKR | Port-synchronous clock input | Edge-triggered master clock for all registered inputs/outputs on respective port; enables full synchronization |
| CE0L/CE1L, CE0R/CE1R | Dual chip enable inputs | Allow depth expansion without external logic: CE0 active + CE1 inactive enables port; both high disables port |
| R/WL / R/WR | Read/write direction control | Synchronous signal determining data flow direction on next clock edge; high = read, low = write |
| OEL / OER | Asynchronous output enable | Tri-states I/Os immediately (no clock dependency); used for bus sharing and hot-swap isolation |
| PL/FTL / PL/FTR | Pipeline/Flow-Through mode select | DC-level input setting output latency: VIH = pipelined (1-cycle delay), VIL = flow-through (no added latency) |
| ZZL / ZZR | Sleep mode control | Asserting high shuts down dynamic circuitry per port (except JTAG), reducing current to ≤20mA; retains memory content |
| INTL / INTR, COLL / COLR | Interrupt and collision flags | Open-drain outputs signaling inter-port conflict (simultaneous access to same address) or user-triggered events |
| TDI / TDO / TCK / TMS / TRST | JTAG boundary scan interface | IEEE 1149.1-compliant test access port supporting in-system verification and debug without intrusive probing |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables simultaneous, independent read/write to identical addresses-eliminates arbitration overhead in co-processor or DMA buffer designs |
| Selectable pipelined or flow-through output | Configurable latency: pipelined mode achieves 166MHz operation; flow-through mode minimizes read-to-write turnaround in ping-pong buffers |
| Dual chip enables per port | Supports seamless depth expansion across multiple devices using only CE0/CE1 signals-no external decode logic required |
| Independent I/O voltage per port | OPTL/OPTR pins allow one port at 3.3V and the other at 2.5V-enables direct interfacing with heterogeneous ASIC/FPGA I/O banks |
| Address counter with repeat and enable | Hardware address incrementing and reset-on-REPEAT simplifies burst transfers and circular buffer implementation in packet processing pipelines |
| JTAG boundary scan support | Full IEEE 1149.1 compliance enables production testability, interconnect validation, and in-field diagnostics without physical probe access |
Applications
| Telecom Line Card Buffering | Network Processor Coherency |
|---|---|
Use Scenario: High-speed packet buffering between ingress and egress engines in 10G/40G line cards. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared memory between two independent data paths, accepting writes from ingress and reads by egress-all synchronized to separate clocks. Use Value: 23.9Gbps aggregate bandwidth and 3.6ns tCD2 ensure sub-10ns latency for packet header lookups and forwarding decisions. | Use Scenario: Maintaining cache coherency between multiple network processor cores accessing shared metadata tables. IC Role / Device Role / Timing Role: Provides atomic read-modify-write capability via collision detection flags, enabling lock-free synchronization between cores. Use Value: Collision alert (COLL/COLR) outputs signal simultaneous access attempts, allowing software to resolve contention without polling or bus locking. |
| FPGA-Based Protocol Accelerator | Real-Time Signal Processing Buffer |
Use Scenario: Offloading TCP/IP checksum, encryption, or deep packet inspection tasks from host CPU using FPGA-accelerated datapath. IC Role / Device Role / Timing Role: Serves as low-latency, high-bandwidth scratchpad memory between FPGA fabric and external PHY interface. Use Value: Independent 2.5V/3.3V I/O per port allows direct connection to FPGA bank (2.5V) and PHY (3.3V), eliminating level-shifter components. | Use Scenario: Storing intermediate results in radar or medical imaging systems requiring deterministic latency and zero data loss. IC Role / Device Role / Timing Role: Functions as dual-clock FIFO buffer-writing sampled data at ADC clock rate, reading at DSP processing clock rate. Use Value: Pipelined output mode ensures consistent 6ns cycle time across all accesses, guaranteeing jitter-free timing for safety-critical processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1375BV18-167BZI | 144Mbit (2M × 72), 167MHz max, 2.5V core + 3.3V I/O only, no independent port voltage selection | Larger density but fixed 3.3V I/O; lacks per-port OPT control and REPEAT counter feature | Choose when higher memory depth is needed and system uses uniform 3.3V I/O; avoid if mixed-voltage port interfacing is required |
| IDT70V9369S133BG | 128K × 36-bit (4.5Mbit), 133MHz, 3.3V-only I/O, no JTAG, no sleep mode (ZZ) | Lower bandwidth and density; lacks power management and test infrastructure | Choose for cost-sensitive, lower-performance applications where JTAG and sleep mode are unnecessary |
Compared with CY7C1375BV18-167BZI and IDT70V9369S133BG, the 70T3799MS166BBG uniquely combines 166MHz pipelined operation, per-port voltage configurability, hardware address counters, and JTAG-making it optimal for high-end, mixed-signal, testable networking systems.
Availability
70T3799MS166BBG is available at Aetrix Electronics and suitable for telecom infrastructure, network processor design, and FPGA-based protocol acceleration requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 70T3799MS166BBG 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, computing, and industrial markets.
The 70T3799MS166BBG belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for deterministic, low-latency data exchange between independent clock domains in networking and real-time embedded systems.
FAQ
What is the maximum operating frequency of the 70T3799MS166BBG in pipelined mode?
The 70T3799MS166BBG achieves a maximum operating frequency of 166MHz in pipelined output mode (FT/PIPE = VIH), corresponding to a 6ns clock cycle time. This is validated for commercial temperature range (0°C to +70°C) and requires 1.7ns address setup and 0.5ns hold times. The device does not support 166MHz operation in flow-through mode, which is limited to 133MHz (7.5ns cycle time).
How does the 70T3799MS166BBG handle simultaneous access to the same memory location from both ports?
The 70T3799MS166BBG uses true dual-port memory cells that permit simultaneous read/write access to identical addresses without corruption. When conflict occurs, the device asserts COLL (left port) and COLR (right port) flags within 3.6ns. These open-drain outputs require external pull-up resistors and enable software or hardware arbitration-ensuring data integrity in co-processor or multi-core environments.
Can the left and right ports of the 70T3799MS166BBG operate at different I/O voltages?
Yes-the 70T3799MS166BBG supports independent I/O voltage selection per port. OPTL sets left-port VDDQL (2.5V if OPTL = VSS, 3.3V if OPTL = VDD); OPTR sets right-port VDDQR identically. This allows one port to interface with a 2.5V FPGA bank while the other connects to a 3.3V PHY-eliminating external level shifters and reducing BOM cost and board area.
What is the purpose of the REPEAT and CNTEN signals in the 70T3799MS166BBG?
REPEAT and CNTEN enable hardware-assisted burst addressing. When CNTEN = LOW on CLK rise, the internal address counter increments. When REPEAT = HIGH, the counter resets to the last valid address loaded via ADS. This allows automatic sequential access (e.g., packet payload streaming) without CPU intervention-reducing overhead in network processors and digital signal applications.
Does the 70T3799MS166BBG support JTAG boundary scan, and what pins are required?
Yes-the 70T3799MS166BBG includes full IEEE 1149.1 JTAG boundary scan support. Required pins are TDI (Test Data In), TDO (Test Data Out), TCK (Test Clock, 10MHz max), TMS (Test Mode Select), and TRST (Test Reset). JTAG remains functional even during sleep mode (ZZ asserted), enabling in-system test and debug without powering up full device functionality.
70T3799MS166BBG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 324-BGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Synchronous
- Memory Size:
- 9Mbit
- Memory Organization:
- 128K x 72
- Memory Interface:
- Parallel
- Clock Frequency:
- 166 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 3.6 ns
- Voltage - Supply:
- 2.4V ~ 2.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 324-PBGA (19x19)
70T3799MS166BBG FAQ
1.How can I place an order for 70T3799MS166BBG through Aetrix?
Please submit a Request for Quotation (RFQ) for 70T3799MS166BBG 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 70T3799MS166BBG reliable?
The price and inventory of 70T3799MS166BBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70T3799MS166BBG is usually 5 days.
3.What payment methods are accepted for 70T3799MS166BBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70T3799MS166BBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70T3799MS166BBG?
70T3799MS166BBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70T3799MS166BBG 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 70T3799MS166BBG?
For technical support, including 70T3799MS166BBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70T3799MS166BBG requirements.
6.How does Aetrix verify that 70T3799MS166BBG is sourced from the original manufacturer or authorized distributors?
All 70T3799MS166BBG 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 70T3799MS166BBG meets industry standards.
7.What is the process for return or replacement of 70T3799MS166BBG?
All 70T3799MS166BBG units undergo pre-shipment inspection (PSI). If there is an issue with 70T3799MS166BBG, 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 70T3799MS166BBG part is unused and in its original packaging.
Return procedure for 70T3799MS166BBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70T3799MS166BBG Tags
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M24C02-WMN6TP
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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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