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Renesas 70V3569S4BC
- Part No.:
- 70V3569S4BC
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 256-LBGA
- Datasheet:
-
70V3569S4BC.pdf
- Description:
- IC SRAM 576KBIT PAR 256CABGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,953
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Product details
Overview
70V3569S4BC from Integrated Device Technology is a high-speed 16K × 36-bit synchronous dual-port static RAM with pipelined output, true dual-port architecture enabling simultaneous read/write access to the same memory location, 4.2 ns clock-to-data access (max), and 7.5 ns cycle time at 133 MHz - deployed in high-bandwidth packet buffering for telecom line cards and network switches.
For engineers reviewing the 70V3569S4BC datasheet, 70V3569S4BC pinout, 70V3569S4BC application, or 70V3569S4BC equivalent, this page delivers verified timing parameters, port-specific I/O voltage flexibility (3.3 V/2.5 V), industrial-temperature support, and depth-expansion-ready chip enable logic - critical for deterministic latency design in real-time data path systems.
Technical Context
The 70V3569S4BC implements fully synchronous operation on both ports using edge-triggered registers for address, data, and control inputs, enabling minimal setup (1.8 ns) and hold (0.7 ns) times at 133 MHz. Its pipelined output mode introduces one-cycle latency but guarantees deterministic tCD2 timing across temperature and voltage.
Each port features independent OPT pins to select I/O voltage (3.3 V or 2.5 V), separate byte enables (BE0–BE3 per port), and dedicated counter enable/reset signals (CNTENL/CNTRSTL and CNTENR/CNTRSTR) for burst-address generation - supporting unidirectional/bidirectional burst transfers without external sequencing logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 16K × 36 bits (576 Kbit total); supports parallel 36-bit data paths per port |
| Cycle Time (Pipelined) | 7.5 ns min - enables 133 MHz sustained operation with guaranteed timing closure |
| Clock-to-Data Valid (tCD2) | 4.2 ns max - defines worst-case latency from CLK rise to valid output in pipelined reads |
| Supply Voltages | VDD = 3.3 V ±150 mV (core); VDDQ = 3.3 V or 2.5 V ± tolerance (I/O per port, selectable via OPT) |
| Operating Temperature | Commercial grade: 0°C to +70°C - validated for stable operation in controlled-environment networking hardware |
| Power Dissipation | Dynamic current: 460 mA max (both ports active, 70V3569S4 speed grade); full standby: 15 mA max |
| Package | 208-pin Plastic Quad Flatpack (PQFP), 28 mm × 28 mm body, 0.65 mm lead pitch |
Pinout & Package
70V3569S4BC is housed in a 208-pin PQFP package (DRG208 footprint), with symmetric left/right port signal groups, dedicated VDD/VSS power planes, and OPTL/OPTR pins controlling per-port I/O voltage selection. All VDD pins require 3.3 V; VDDQL/VDDQR must match OPT pin state (3.3 V if OPT = VIH, 2.5 V if OPT = VIL).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| CLKL / CLKR | Port-synchronous clock input | Edge-triggered register clock for all inputs/outputs on respective port; determines tCYC2 and tCD2 timing |
| A0L–A13L / A0R–A13R | Address inputs | 14-bit address bus per port; supports full 16K depth addressing (214 = 16,384 locations) |
| I/O0L–I/O35L / I/O0R–I/O35R | Bidirectional data I/O | 36-bit parallel data path per port; byte-wise control via BE0–BE3 enables precise 9-bit sub-word access |
| CE0L/CE1L / CE0R/CE1R | Chip enable pair | Dual-enable logic allows depth expansion without external decoding; CE0X = VIL & CE1X = VIH enables port X |
| R/WL / R/WR | Read/write direction control | Synchronous active-low control; determines data flow direction on next clock edge |
| OEL / OER | Asynchronous output enable | Independent tri-state control per port; enables dynamic bus sharing without clock dependency |
| OPTL / OPTR | I/O voltage option select | DC-level input selecting VDDQX supply voltage: VIH → 3.3 V, VIL → 2.5 V - sets VIH/VIL thresholds accordingly |
| CNTRSTL/CNTRSTR | Counter reset | Asynchronous reset of internal address counter to 0; functional even when ADS = VIH or CNTEN = VIH |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables concurrent read and write to identical addresses - eliminates arbitration logic in shared-memory inter-processor communication |
| Pipelined output mode | Guarantees fixed 1-cycle output latency (tCD2), simplifying timing analysis in synchronous FIFO and buffer designs |
| Per-port I/O voltage selection | OPTL/OPTR pins allow independent 3.3 V or 2.5 V I/O interfaces - supports mixed-voltage system integration without level shifters |
| Dual chip enables (CE0/CE1) | Enables seamless depth expansion (e.g., 32K × 36) using multiple devices with no additional decode logic |
| Integrated address counter | CNTEN/ADS-controlled counter generates sequential addresses - reduces external address generation logic in burst-mode applications |
| Self-timed write cycle | Internal write timing control ensures minimum cycle time compliance regardless of external setup/hold margin variations |
Applications
| Telecom Packet Buffering | Real-Time DSP Data Exchange |
|---|---|
|
Use Scenario: Storing incoming/outgoing ATM or Ethernet frames in line interface cards where ingress and egress paths operate independently. IC Role / Device Role / Timing Role: Dual-port SRAM acts as a non-blocking, low-latency frame buffer - left port accepts payload from MAC, right port feeds framer or serializer. Use Value: Simultaneous access eliminates pipeline stalls; 4.2 ns tCD2 ensures sub-5 ns read turnaround for jitter-sensitive timing recovery circuits. |
Use Scenario: Sharing coefficient tables and intermediate results between two tightly coupled DSP cores executing parallel filter stages. IC Role / Device Role / Timing Role: Memory coherency hub - one core writes updated coefficients while the other reads prior values, synchronized via shared clock domain. Use Value: True dual-port architecture avoids arbitration delays; pipelined outputs guarantee deterministic 1-cycle read latency for real-time loop execution. |
| Network Switch Fabric Lookup | Industrial Motion Controller Buffer |
|
Use Scenario: Accelerating MAC address or routing table lookups by dedicating one port to search engine writes and the other to CPU reads. IC Role / Device Role / Timing Role: High-speed associative memory interface - search engine updates entries asynchronously while CPU performs periodic consistency checks. Use Value: Independent CE0/CE1 enables selective port disable during maintenance; 133 MHz operation sustains >9 Gbps aggregate bandwidth for multi-gigabit switch fabrics. |
Use Scenario: Buffering position setpoints and encoder feedback in closed-loop servo drives where motion controller and FPGA execute on separate clocks. IC Role / Device Role / Timing Role: Synchronization bridge - FPGA writes interpolated trajectory points to left port; motion controller reads via right port with deterministic latency. Use Value: Per-port OPT pins allow FPGA-side 2.5 V I/O and controller-side 3.3 V I/O - eliminating level-shifter components and PCB routing complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1362BV33-167BAXI | 16K × 36, 167 MHz max, 3.3 V only I/O (no 2.5 V option), 256-pin BGA package | Lacks per-port voltage selection; requires board redesign for 2.5 V interfacing; higher speed but larger footprint | Select when maximum bandwidth (>12 Gbps) is required and 2.5 V I/O compatibility is unnecessary |
| AS7C331664B-133BIN | 16K × 36, 133 MHz, 3.3 V core/I/O, 208-pin PQFP, no address counter or pipelined mode | No CNTEN/ADS logic or pipelined output - adds external logic for burst addressing; higher tCD2 variability | Select for cost-sensitive applications where deterministic pipelined latency and counter features are not required |
Compared with CY7C1362BV33-167BAXI and AS7C331664B-133BIN, the 70V3569S4BC uniquely combines per-port I/O voltage flexibility, integrated address counter, and guaranteed 4.2 ns pipelined tCD2 - making it optimal for mixed-voltage, burst-oriented, latency-critical embedded systems.
Availability
70V3569S4BC is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, and real-time DSP applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 70V3569S4BC 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, specializes in high-performance timing, memory interface, and RF solutions for communications and computing markets.
The 70V3569S4BC belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for deterministic-latency, high-bandwidth data buffering in telecom, networking, and real-time embedded systems.
FAQ
What is the maximum operating frequency of the 70V3569S4BC?
The 70V3569S4BC supports a minimum clock cycle time of 7.5 ns, enabling reliable operation at 133 MHz in pipelined mode. This is validated across commercial temperature range (0°C to +70°C) with 3.3 V core supply and proper termination. The 70V3569S4BC does not support higher speeds like the 70V3569S5 or S6 variants.
Does the 70V3569S4BC support independent I/O voltage selection on each port?
Yes, the 70V3569S4BC supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL = VIH configures left-port I/Os for 3.3 V operation (VDDQL = 3.3 V), while OPTL = VIL selects 2.5 V (VDDQL = 2.5 V); the same applies independently to the right port. This capability is confirmed in the device's DC operating conditions tables.
What is the function of the ADS pin on the 70V3569S4BC?
The ADS (Address Strobe) pin on the 70V3569S4BC controls whether the external address or internal counter value is latched on the rising edge of CLK. When ADS = VIL, the external address is loaded; when ADS = VIH and CNTEN = VIH, the internal counter holds its value. This enables flexible address sourcing without external logic, as documented in Truth Table II.
Can the 70V3569S4BC be used in industrial temperature applications?
No, the 70V3569S4BC is specified only for commercial temperature range (0°C to +70°C). Industrial-grade operation (−40°C to +85°C) is supported by the 70V3569S5 variant, not the 70V3569S4BC. This distinction is explicitly stated in the ordering guide and AC electrical characteristics tables.
How does the 70V3569S4BC handle simultaneous read and write to the same memory location?
The 70V3569S4BC uses true dual-port memory cells that permit simultaneous, independent access to the same address - one port can read while the other writes without conflict or data corruption. This behavior is fundamental to its architecture and is confirmed in the Functional Block Diagram and Features section of the datasheet.
70V3569S4BC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 256-LBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Synchronous
- Memory Size:
- 576Kbit
- Memory Organization:
- 16K x 36
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 4.2 ns
- Voltage - Supply:
- 3.15V ~ 3.45V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 256-CABGA (17x17)
70V3569S4BC FAQ
1.How can I place an order for 70V3569S4BC through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V3569S4BC 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 70V3569S4BC reliable?
The price and inventory of 70V3569S4BC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V3569S4BC is usually 5 days.
3.What payment methods are accepted for 70V3569S4BC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V3569S4BC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V3569S4BC?
70V3569S4BC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V3569S4BC 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 70V3569S4BC?
For technical support, including 70V3569S4BC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V3569S4BC requirements.
6.How does Aetrix verify that 70V3569S4BC is sourced from the original manufacturer or authorized distributors?
All 70V3569S4BC 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 70V3569S4BC meets industry standards.
7.What is the process for return or replacement of 70V3569S4BC?
All 70V3569S4BC units undergo pre-shipment inspection (PSI). If there is an issue with 70V3569S4BC, 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 70V3569S4BC part is unused and in its original packaging.
Return procedure for 70V3569S4BC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V3569S4BC Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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AT24C04C-SSHM-T
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