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Renesas 70T3799MS133BBG
- Part No.:
- 70T3799MS133BBG
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 324-BGA
- Datasheet:
-
70T3799MS133BBG.pdf
- Description:
- IC SRAM 9MBIT PARALLEL 324PBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
70T3799MS133BBG from IDT (now Renesas) is a high-speed 256K x 72-bit synchronous dual-port SRAM with true concurrent access on independent left/right ports, 2.5V core supply, selectable 2.5V/3.3V I/O interface per port, 133MHz operation (7.5ns cycle), and integrated JTAG boundary scan. It enables real-time data exchange in telecom line cards and network packet buffers.
For engineers reviewing the 70T3799MS133BBG datasheet, 70T3799MS133BBG pinout, 70T3799MS133BBG application, or 70T3799MS133BBG equivalent, key selection criteria include pipelined vs. flow-through output mode, dual-cycle deselect timing, collision/interrupt flag behavior, and independent OPT-pin-controlled I/O voltage selection per port.
Technical Context
The device implements fully synchronous dual-port architecture with separate clock domains (CLKL/CLKR), register-controlled address/data/control inputs, and self-timed write logic enabling minimal 7.5ns cycle time in pipelined mode. Each port supports independent byte-enable masking (BE0–BE7) for 9-bit granularity writes.
Collision detection logic monitors simultaneous accesses to identical addresses across ports and asserts COLL flags within 4.2ns; interrupt generation is edge-triggered and asynchronous to both clocks. JTAG TAP controller operates at up to 10MHz and remains functional during ZZ sleep mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256K × 72 bits (18Mbit total); A17 is NC - actual address range is A0–A16 (128K depth usable) |
| Max Clock Frequency | 133MHz (7.5ns cycle time in pipelined mode); industrial temp range −40°C to +85°C guaranteed |
| Core Supply | VDD = 2.5V ±100mV; all VDD pins must be connected to 2.5V - no tolerance for 3.3V core |
| I/O Voltage Support | Selectable per port: 2.5V (OPT = VSS) or 3.3V (OPT = VDD); VDDQ must match selected level |
| Access Timing | tCD2 = 4.2ns max (clock-to-data valid, pipelined); tCD1 = 15ns max (flow-through); tOE = 4.6ns max |
| Power Consumption | ISB3 = 25mA max full standby (CMOS-level inputs); Izz = 25mA max sleep mode (ZZ asserted) |
| Package | 324-ball BGA (BBG), 19mm × 19mm × 1.76mm, 1.0mm ball pitch, RoHS-compliant green package |
Pinout & Package
324-pin Green Ball Grid Array (BBG) package with 19mm × 19mm body, 1.0mm ball pitch, and standard BGA thermal/mechanical profile. Pin mapping follows JEDEC MO-251, with dedicated power/ground balls distributed across array for low-inductance decoupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKL / CLKR | Port-specific clock input | Synchronous edge-triggered timing reference for left/right port operations; no internal PLL - external clock required |
| R/WL / R/WR | Read/write direction control | Active-high read enable (when OE active); controls data flow direction per port independently |
| CE0L/CE1L, CE0R/CE1R | Dual chip enable inputs | Enable depth expansion without external logic: CE0=low + CE1=high enables port; both high disables |
| PL/FTL / PL/FTR | Pipeline/Flow-through mode select | DC-level input (VIH/VIL) setting output latency: VIH = pipelined (1-cycle delay), VIL = flow-through (no delay) |
| OPTL / OPTR | I/O voltage option control | Configures VDDQ interface level per port: VDD = 3.3V I/O, VSS = 2.5V I/O - must match VDDQ supply |
| ZZL / ZZR | Per-port sleep mode enable | Asynchronous active-high entry into low-power state; dynamic inputs disabled except JTAG; static inputs remain functional |
| INTL / INTR | Interrupt flag output | Open-drain active-low signal indicating memory event (e.g., collision, counter wrap); requires external pull-up |
| COLL / COLR | Collision detection flag | Asserted within 4.2ns of simultaneous same-address access across ports; resets automatically after resolution |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables simultaneous read/write to identical address locations on left and right ports without arbitration logic |
| Selectable pipelined or flow-through output | Reduces system latency variability: pipelined mode gives deterministic 1-cycle delay; flow-through eliminates delay entirely |
| Dual-cycle deselect (DCD) | Ensures clean bus release in pipelined mode - prevents metastability when disabling outputs mid-burst |
| Independent per-port I/O voltage selection | Allows mixed-voltage system integration: e.g., left port at 3.3V for legacy FPGA, right port at 2.5V for modern ASIC |
| Hardware collision detection | On-die logic detects and flags concurrent accesses to same address within 4.2ns - eliminates software polling overhead |
| JTAG boundary scan support | IEEE 1149.1-compliant TAP controller enables in-system test and debug without requiring external test fixtures |
Applications
| Telecom Line Card Buffering | Network Packet Switching |
|---|---|
Use Scenario: Storing incoming/outgoing ATM or Ethernet frames in carrier-grade line cards where deterministic latency is critical. IC Role / Device Role / Timing Role: Dual-port SRAM acts as ping-pong frame buffer - one port receives while the other transmits, synchronized to line-rate clocks. Use Value: 7.5ns pipelined cycle time supports 133MHz backplane interfaces; collision detection prevents frame corruption during simultaneous header lookup and payload write. | Use Scenario: Implementing content-addressable memory (CAM) assist logic in Layer 2/Layer 3 switches handling >10Gbps traffic. IC Role / Device Role / Timing Role: Stores forwarding table entries and statistics counters; left port handles CPU updates, right port serves lookup engine at wire speed. Use Value: Independent 2.5V/3.3V I/O per port allows direct connection to 3.3V management CPU and 2.5V ASIC lookup engine without level shifters. |
| Real-Time Signal Processing | Industrial Motion Control |
Use Scenario: Coordinating ADC sample capture and DSP algorithm execution in radar or ultrasound systems with strict jitter budgets. IC Role / Device Role / Timing Role: Serves as shared memory between high-speed ADC interface (left port) and programmable logic/DSP (right port). Use Value: Flow-through output mode eliminates clock-to-data delay variation; tSA = 1.8ns setup ensures reliable sampling at 133MHz with minimal board routing margin. | Use Scenario: Synchronizing multi-axis servo drive commands and encoder feedback in CNC machines operating across −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Holds motion trajectory tables and real-time position registers; left port updated by PLC, right port read by servo controllers. Use Value: Industrial temperature rating and ZZ sleep mode reduce power during idle cycles; collision detection prevents command overwrite during emergency stop sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1375BV33-167BZI | 167MHz max, 131K × 72 organization, 3.3V-only core/I/O, no JTAG, no collision detection | Lacks per-port voltage selection and hardware collision flags; requires external arbitration for same-address access | Choose when higher speed is needed and system already implements collision handling in firmware or logic |
| AS7C33256PFS-133BIN | 133MHz, 256K × 72, 3.3V core/I/O, no pipelined mode, no JTAG, no interrupt/collision flags | Fixed flow-through only; no sleep mode; no per-port enable/disable granularity (single CE) | Choose for cost-sensitive designs where pipelining, sleep, and diagnostic features are unnecessary |
Compared with CY7C1375BV33-167BZI and AS7C33256PFS-133BIN, the 70T3799MS133BBG provides unique value through independent I/O voltage control, hardware collision detection, and JTAG debug - reducing system-level complexity and validation effort in mixed-voltage, real-time applications.
Availability
70T3799MS133BBG is available at Aetrix Electronics and suitable for telecom infrastructure, network switching, real-time signal processing, and industrial motion control applications requiring stable component supply across extended temperature ranges.
Supply support for 70T3799MS133BBG 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
Renesas Electronics Corporation (formerly Integrated Device Technology) is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and communications markets.
The IDT70T3799 product line was engineered for high-bandwidth, low-latency inter-processor communication in telecom and networking equipment - emphasizing deterministic timing, dual-port concurrency, and robust debug capabilities.
FAQ
What is the maximum guaranteed operating frequency of the 70T3799MS133BBG?
The 70T3799MS133BBG is rated for 133MHz operation across the industrial temperature range (−40°C to +85°C), with a maximum clock cycle time of 7.5ns in pipelined mode. This specification is production-tested and guaranteed - not a typical or design-target value. The 70T3799MS133BBG achieves this performance using synchronous register-controlled inputs and self-timed write logic.
Can the left and right ports of the 70T3799MS133BBG operate at different I/O voltage levels simultaneously?
Yes, the 70T3799MS133BBG supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL = VDD (2.5V) configures the left port for 3.3V I/O operation with VDDQL = 3.3V, while OPTR = VSS (0V) configures the right port for 2.5V I/O with VDDQR = 2.5V. This capability is explicitly documented in the DC operating conditions tables and pin function descriptions for the 70T3799MS133BBG.
Does the 70T3799MS133BBG support hardware collision detection, and how does it behave?
Yes, the 70T3799MS133BBG includes on-die collision detection logic that asserts COLL or COLR within 4.2ns when both ports attempt simultaneous access to the same memory address. The flag remains asserted until the conflict resolves, and resets automatically. This feature eliminates the need for software polling or external arbitration logic - a key differentiator confirmed in the functional block diagram and timing specifications for the 70T3799MS133BBG.
What is the purpose of the ZZL and ZZR pins on the 70T3799MS133BBG, and how do they affect power consumption?
The ZZL and ZZR pins are per-port sleep mode enables on the 70T3799MS133BBG. When asserted high, they disable dynamic inputs (except JTAG) and reduce current draw to ≤25mA (Izz). Static inputs like PL/FT and OPT remain functional during sleep. This allows selective power gating - e.g., putting the right port into sleep while the left port continues active data transfer - a capability verified in the DC electrical characteristics table for the 70T3799MS133BBG.
Is JTAG boundary scan supported on the 70T3799MS133BBG, and what are its operational constraints?
Yes, the 70T3799MS133BBG integrates IEEE 1149.1-compliant JTAG boundary scan with TCK (10MHz max), TMS, TDI, TDO, and TRST pins. Critically, JTAG remains fully operational even when ZZL or ZZR are asserted - enabling in-system test and debug during low-power states. This behavior is explicitly noted in the pin description table and functional notes for the 70T3799MS133BBG.
70T3799MS133BBG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 324-BGA
- Packaging:
- Tray
- Product Status:
- Active
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 324-PBGA (19x19)
70T3799MS133BBG FAQ
1.How can I place an order for 70T3799MS133BBG through Aetrix?
Please submit a Request for Quotation (RFQ) for 70T3799MS133BBG 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 70T3799MS133BBG reliable?
The price and inventory of 70T3799MS133BBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70T3799MS133BBG is usually 5 days.
3.What payment methods are accepted for 70T3799MS133BBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70T3799MS133BBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70T3799MS133BBG?
70T3799MS133BBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70T3799MS133BBG 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 70T3799MS133BBG?
For technical support, including 70T3799MS133BBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70T3799MS133BBG requirements.
6.How does Aetrix verify that 70T3799MS133BBG is sourced from the original manufacturer or authorized distributors?
All 70T3799MS133BBG 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 70T3799MS133BBG meets industry standards.
7.What is the process for return or replacement of 70T3799MS133BBG?
All 70T3799MS133BBG units undergo pre-shipment inspection (PSI). If there is an issue with 70T3799MS133BBG, 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 70T3799MS133BBG part is unused and in its original packaging.
Return procedure for 70T3799MS133BBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70T3799MS133BBG Tags
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