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Renesas 70T3799MS133BBGI
- Part No.:
- 70T3799MS133BBGI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 324-BGA
- Datasheet:
-
70T3799MS133BBGI.pdf
- Description:
- IC SRAM 9MBIT PARALLEL 324PBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,901
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Product details
Overview
70T3799MS133BBGI 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 133MHz (7.5ns cycle time) in pipelined mode, supports selectable 2.5V or 3.3V I/O interfaces per port, and delivers 23.9Gbps aggregate bandwidth. It is used in telecom line cards for real-time packet buffering and header processing.
For engineers reviewing the 70T3799MS133BBGI datasheet, 70T3799MS133BBGI pinout, 70T3799MS133BBGI application, or 70T3799MS133BBGI equivalent, key selection criteria include pipelined vs. flow-through output timing, independent port voltage configuration (2.5V/3.3V), collision/interrupt flag support, JTAG boundary scan capability, and industrial temperature operation (-40°C to +85°C).
Technical Context
This device implements fully synchronous dual-port operation with separate clock inputs (CLKL/CLKR), independent chip enables (CE0L/CE1L, CE0R/CE1R), and asynchronous sleep control (ZZL/ZZR). Each port features programmable pipeline/flow-through output mode via PL/FT pins and integrated address counter with repeat and enable functions.
It integrates collision detection logic that flags simultaneous access to identical addresses across ports, plus interrupt generation for coordinated multi-processor memory sharing. JTAG TAP controller supports IEEE 1149.1 boundary scan for board-level testability without requiring functional access to memory contents.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256K × 72 bits (18Mbit total); supports depth expansion using dual CE pairs without external logic |
| Max Clock Frequency | 133MHz (7.5ns cycle time in pipelined mode); enables deterministic low-latency data exchange between processors |
| Access Time | 4.2ns clock-to-data-out (tCD2) in pipelined mode; meets tight timing budgets in high-speed packet forwarding engines |
| I/O Voltage Support | Selectable 2.5V or 3.3V per port via OPTL/OPTR pins; allows mixed-voltage system integration without level shifters |
| Operating Temperature | -40°C to +85°C industrial grade; qualified for deployment in uncontrolled telecom infrastructure environments |
| Power Supply | 2.5V ±100mV core (VDD); separate VDDQ rails per port configurable for 2.5V or 3.3V I/O signaling |
| Package | 324-pin Green BGA (19mm × 19mm, 1.0mm ball pitch); supports high-density PCB layouts with controlled impedance routing |
Pinout & Package
70T3799MS133BBGI is housed in a 324-pin Green Ball Grid Array (BGA) package with 19mm × 19mm body and 1.0mm ball pitch. All VDD pins require connection to 2.5V; VDDQ pins must be set to 2.5V or 3.3V depending on OPT pin state per port. A17L and A17R are no-connect (NC) pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKL / CLKR | Port-specific clock input | Synchronous edge-triggered timing reference for all control and data transfers on respective port |
| CE0L/CE1L, CE0R/CE1R | Dual chip enable inputs | Enable/disable port operation independently; dual CE architecture supports seamless depth expansion |
| R/WL / R/WR | Read/write direction control | Asynchronous assertion determines data flow direction; latched on rising clock edge |
| OEL / OER | Output enable (asynchronous) | Tri-states I/O bus independently of clock; critical for bus sharing and hot-swap compatibility |
| PL/FTL / PL/FTR | Pipeline/Flow-through mode select | Configures output register behavior: pipelined (1-cycle latency) or flow-through (0-cycle latency) |
| INTL / INTR | Interrupt flag outputs | Active-low open-drain signals indicating memory event completion or collision detection |
| COLL / COLR | Collision detection flags | Asserted when both ports attempt simultaneous access to identical address; enables arbitration logic |
| ZZL / ZZR | Sleep mode control | Shuts down dynamic circuitry per port while preserving JTAG accessibility and static inputs |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables concurrent read/write access to identical addresses - essential for lock-free inter-processor communication |
| Dual-cycle deselect (DCD) | Prevents bus contention during pipelined mode transitions by delaying output disable by two clock cycles |
| Address counter with repeat | Automatically increments address on each access; REPEAT signal resets counter to last ADS-loaded address for burst streaming |
| Separate byte enables (BE0–BE7) | Permits partial-word writes (9-bit bytes) without read-modify-write cycles - improves efficiency in protocol header updates |
| JTAG boundary scan (IEEE 1149.1) | Enables structural testing of BGA solder joints and interconnects without functional memory access or dedicated test pads |
| Independent I/O voltage selection | OPTL/OPTR pins configure each port for 2.5V or 3.3V signaling - eliminates need for external level translators in mixed-voltage systems |
Applications
| Telecom Packet Buffering | Network Processor Coherency |
|---|---|
|
Use Scenario: Real-time buffering of Ethernet frames in carrier-grade switches before classification and forwarding. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared scratchpad between ingress and egress network processors, synchronized via independent clocks and collision detection. Use Value: 4.2ns tCD2 latency and 133MHz operation ensure sub-microsecond frame handoff, meeting ITU-T G.8261 jitter requirements. |
Use Scenario: Maintaining cache coherency between two tightly coupled MIPS-based network processors executing parallel packet inspection tasks. IC Role / Device Role / Timing Role: Serves as a hardware-managed shared memory with interrupt-driven notification of write events and collision-aware arbitration. Use Value: INTL/INTR and COLL/COLR flags eliminate software polling overhead, reducing average coherency latency by 38% versus software-only schemes. |
| Baseband Signal Processing | Industrial Motion Control |
|
Use Scenario: Storing intermediate FFT results in LTE baseband units where DSP and FPGA share real-time signal data streams. IC Role / Device Role / Timing Role: Provides deterministic, low-jitter memory access for time-critical signal path synchronization between heterogeneous compute elements. Use Value: Pipelined output mode ensures consistent 7.5ns cycle time across temperature range, supporting 125MHz FPGA interface timing closure. |
Use Scenario: Coordinating position feedback and motion command exchange between dual-axis servo controllers in CNC machine tools. IC Role / Device Role / Timing Role: Acts as a time-stamped shared register bank with collision detection preventing conflicting axis updates during synchronized motion profiles. Use Value: Industrial temperature rating (-40°C to +85°C) and ZZ sleep mode enable reliable operation in enclosed motor drive enclosures without forced cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1375BV25-167AXC | 167MHz max speed (6ns cycle), 131K × 72 organization, 3.3V-only I/O, no JTAG, commercial temp only | Lacks industrial temp rating and per-port voltage flexibility; requires external level translation in mixed-voltage systems | Choose when maximum speed is prioritized over temperature range and voltage configurability |
| AS7C3316248A-133BIN | 133MHz, 256K × 72, 2.5V core + 2.5V/3.3V I/O, but no collision/interrupt flags or address counter features | No hardware collision detection or address auto-increment - increases firmware complexity for burst transfers | Choose when cost sensitivity outweighs need for hardware-assisted arbitration and streaming acceleration |
Compared with CY7C1375BV25-167AXC and AS7C3316248A-133BIN, the 70T3799MS133BBGI uniquely combines industrial temperature operation, per-port I/O voltage selection, hardware collision detection, and JTAG testability - making it optimal for telecom and industrial embedded systems requiring robustness and debuggability.
Availability
70T3799MS133BBGI is available at Aetrix Electronics and suitable for telecom infrastructure, network processor coherency, and industrial motion control applications requiring stable component supply across extended product lifecycles.
Supply support for 70T3799MS133BBGI 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 70T3799MS133BBGI belongs to IDT's high-speed synchronous dual-port SRAM family, engineered specifically for deterministic, low-latency inter-processor communication in telecom and networking equipment.
FAQ
What is the maximum operating frequency of the 70T3799MS133BBGI in pipelined mode?
The 70T3799MS133BBGI supports up to 133MHz operation in pipelined mode, corresponding to a 7.5ns clock cycle time (tCYC2). This is validated for industrial temperature range (-40°C to +85°C) and applies when PL/FTL and PL/FTR are set to VIH. The device achieves this timing with guaranteed tCD2 ≤ 4.2ns clock-to-data-out delay under specified VDD and VDDQ conditions.
Does the 70T3799MS133BBGI support independent voltage configuration on its left and right ports?
Yes, the 70T3799MS133BBGI 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 signaling with VDDQL = 3.3V; setting it to VSS (0V) configures 2.5V operation with VDDQL = 2.5V. The right port operates identically but independently using OPTR and VDDQR.
How does collision detection work on the 70T3799MS133BBGI?
The 70T3799MS133BBGI asserts COLL and COLR outputs when both ports simultaneously access the same memory address. Detection occurs synchronously with the clock edges of each port, with propagation delays specified as tCOLS ≤ 4.2ns and tCOLR ≤ 4.2ns. These flags enable external arbitration logic to resolve conflicts without software intervention, ensuring data integrity in multi-processor systems.
What is the function of the REPEAT pin on the 70T3799MS133BBGI?
The REPEATL and REPEATR pins on the 70T3799MS133BBGI reset the internal address counter to the last valid address loaded via ADSL or ADSR. When asserted (VIH), the counter reuses that address on subsequent accesses - enabling efficient burst reads/writes without reloading the address bus. This feature is especially valuable in streaming applications like packet header parsing or FFT coefficient loading.
Is JTAG boundary scan supported on the 70T3799MS133BBGI, and what standard does it comply with?
Yes, the 70T3799MS133BBGI includes full IEEE 1149.1-compliant JTAG boundary scan functionality with TDI, TDO, TCK, TMS, and TRST pins. It supports instruction register access, data register scanning, and interconnect testing of BGA solder joints and PCB traces - critical for high-reliability telecom and industrial assemblies where physical probe access is impractical.
70T3799MS133BBGI 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:
- 133 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 4.2 ns
- Voltage - Supply:
- 2.4V ~ 2.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 324-PBGA (19x19)
70T3799MS133BBGI FAQ
1.How can I place an order for 70T3799MS133BBGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 70T3799MS133BBGI 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 70T3799MS133BBGI reliable?
The price and inventory of 70T3799MS133BBGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70T3799MS133BBGI is usually 5 days.
3.What payment methods are accepted for 70T3799MS133BBGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70T3799MS133BBGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70T3799MS133BBGI?
70T3799MS133BBGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70T3799MS133BBGI 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 70T3799MS133BBGI?
For technical support, including 70T3799MS133BBGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70T3799MS133BBGI requirements.
6.How does Aetrix verify that 70T3799MS133BBGI is sourced from the original manufacturer or authorized distributors?
All 70T3799MS133BBGI 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 70T3799MS133BBGI meets industry standards.
7.What is the process for return or replacement of 70T3799MS133BBGI?
All 70T3799MS133BBGI units undergo pre-shipment inspection (PSI). If there is an issue with 70T3799MS133BBGI, 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 70T3799MS133BBGI part is unused and in its original packaging.
Return procedure for 70T3799MS133BBGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70T3799MS133BBGI Tags
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