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Renesas 70V659S10BFG
- Part No.:
- 70V659S10BFG
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 208-LFBGA
- Datasheet:
-
70V659S10BFG.pdf
- Description:
- IC SRAM 4.5MBIT PAR 208CABGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,734
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Product details
Overview
70V659S10BFG from IDT (now Renesas) is a high-speed, asynchronous dual-port static RAM with 128K × 36-bit organization (4.608 Mbit), 3.3V core supply, and independently configurable 3.3V/2.5V I/O voltage per port. It supports true simultaneous read/write access to the same memory location and is used in real-time inter-processor communication, FPGA co-processing buffers, and telecom packet buffering systems.
For engineers reviewing the 70V659S10BFG datasheet, 70V659S10BFG pinout, 70V659S10BFG application, or 70V659S10BFG equivalent, key selection criteria include its 10 ns max read cycle time, on-chip semaphore arbitration, JTAG IEEE 1149.1 compliance, and support for Master/Slave cascading in 72-bit+ memory systems without external logic.
Technical Context
The 70V659S10BFG implements fully asynchronous dual-port architecture with independent left/right address, control, and 36-bit bidirectional I/O buses. Each port features separate chip enables (CE0/CE1), byte enables (BE0–BE3), read/write (R/W), output enable (OE), and semaphore/interrupt/busy signaling.
On-chip arbitration logic handles port contention via BUSY flag assertion and hardware semaphore registers accessible via A0–A2. The device supports JTAG boundary-scan testing and allows independent I/O voltage selection (3.3V or 2.5V per port) via OPTL/OPTR pins, while maintaining fixed 3.3V ±150 mV core supply (VDD).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 36 bits (4.608 Mbit); supports depth expansion via dual CE and Master/Slave mode |
| Access Time (tRC) | 10 ns max (commercial grade); enables ≤100 MHz system clock interfacing without wait states |
| I/O Voltage Support | Per-port selectable 3.3V (±150 mV) or 2.5V (±100 mV); eliminates level-shifter requirements in mixed-voltage systems |
| Operating Temperature | 0°C to +70°C (commercial); validated for stable operation in industrial control and networking equipment |
| Power Supply | VDD = 3.3V ±150 mV (core only); VDDQL/VDDQR independently set per port's I/O voltage |
| JTAG Compliance | IEEE 1149.1 compliant; enables production testability and debug visibility without additional test circuitry |
| Arbitration Logic | Hardware semaphore, BUSY, and INT flags; resolves port contention without software overhead or external arbitration logic |
Pinout & Package
70V659S10BFG is packaged in a 208-ball fine-pitch Ball Grid Array (BGA) with 0.8 mm ball pitch and 15 mm × 15 mm body size. Pin functions are symmetrically distributed across left and right ports, with dedicated power/ground balls and JTAG test pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE0L / CE0R | Chip Enable 0 (Left/Right) | Primary enable for port access; CE0X = VIL and CE1X = VIH selects active mode for port X |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low write enable; determines direction of data transfer on I/Ox bus during CE-active window |
| A0L–A16L / A0R–A16R | Address Inputs (Left/Right) | 17-bit address bus per port; A16 is no-connect for 64K/32K configurations |
| I/O0L–I/O35L / I/O0R–I/O35R | Data I/O (Left/Right) | 36-bit bidirectional data path; BE0–BE3 control 9-bit byte granularity for partial writes |
| OPTL / OPTR | I/O Voltage Select (Left/Right) | VIH = 3.3V I/O mode (VDDQX = 3.3V); VIL = 2.5V I/O mode (VDDQX = 2.5V); independent per port |
| M/S | Master/Slave Select | VIH configures BUSY as output (Master); VIL configures BUSY as input (Slave); enables daisy-chained arbitration |
| TCK / TMS / TDI / TDO / TRST | JTAG Test Interface | Standard 5-pin boundary-scan interface; supports IEEE 1149.1 compliance testing and in-system programming |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Simultaneous independent read/write to identical memory locations without internal arbitration delay |
| Hardware Semaphore Logic | Eight shared semaphore flags accessed via A0–A2; enables lock-free inter-processor synchronization |
| Configurable I/O Voltage | Independent 3.3V/2.5V selection per port via OPT pins - eliminates external level shifters in heterogeneous systems |
| Master/Slave Cascading | Enables 72-bit+ word width expansion using multiple devices without discrete glue logic or timing penalties |
| Low-Power Standby Modes | ISB3 = 3 mA (typ) full standby with CMOS-level inputs; supports energy-efficient idle states in embedded systems |
| Asynchronous Operation | No clock required; compatible with arbitrary timing domains - ideal for FPGA-to-ASIC bridging and legacy bus interfaces |
Applications
| Telecom Packet Buffering | FPGA Co-Processing Memory |
|---|---|
|
Use Scenario: Storing and forwarding variable-length packets between line cards and switching fabric in carrier-grade routers. IC Role / Device Role / Timing Role: Dual-port SRAM acts as ping-pong buffer - one port accepts ingress packets while the other services egress scheduling logic. Use Value: 10 ns access time ensures sub-100 ns latency for packet header lookups; BUSY flag prevents concurrent write collisions during burst transfers. |
Use Scenario: Providing low-latency, deterministic memory for high-throughput DSP algorithms implemented in Xilinx or Intel FPGAs. IC Role / Device Role / Timing Role: Offloads memory management from FPGA logic; left port interfaces with FPGA fabric, right port connects to host processor or DMA engine. Use Value: Independent 3.3V/2.5V I/O support matches FPGA bank voltages directly; JTAG enables in-system verification of memory integrity. |
| Industrial PLC Inter-Processor Link | Avionics Data Concentrator |
|
Use Scenario: Real-time data exchange between safety-critical motion control CPU and auxiliary I/O management MCU in programmable logic controllers. IC Role / Device Role / Timing Role: Acts as deterministic shared memory with hardware semaphore - replaces software-based mutex protocols vulnerable to priority inversion. Use Value: On-chip semaphore registers reduce inter-processor handshake latency to <5 ns; industrial temperature rating (−40°C to +85°C) ensures reliability in factory environments. |
Use Scenario: Aggregating sensor telemetry (ARINC 429, MIL-STD-1553) and feeding processed data to flight management systems in certified avionics units. IC Role / Device Role / Timing Role: Dual-port SRAM serves as time-triggered buffer - one port collects raw sensor streams, the other feeds deterministic processing pipelines. Use Value: Asynchronous operation eliminates clock domain crossing issues; 208-ball BGA meets IPC-7351 density requirements for compact, vibration-resistant PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1362BV33-10BGXI | 128K × 32-bit (4.194 Mbit); 3.3V-only I/O; no per-port voltage select; 10 ns tRC; -40°C to +85°C | Lacks independent I/O voltage configuration; requires external level translation when interfacing with 2.5V logic | Select when system uses uniform 3.3V I/O and space-constrained BGA footprint is critical (165-ball vs. 208-ball) |
| AS7C3256B-10BIN | 32K × 36-bit (1.152 Mbit); 3.3V core/I/O; 10 ns tRC; commercial temp only (0°C to +70°C); PQFP package | Lower density and narrower temperature range; lacks JTAG and semaphore logic; PQFP limits high-speed routing | Select for cost-sensitive, non-safety-critical applications where 128K depth is unnecessary and leaded packaging is preferred |
Compared with CY7C1362BV33-10BGXI and AS7C3256B-10BIN, the 70V659S10BFG uniquely delivers per-port I/O voltage flexibility, hardware semaphore, and JTAG testability in a single 128K × 36 device - enabling robust, scalable inter-processor communication without design compromises.
Availability
70V659S10BFG is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and avionics applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 70V659S10BFG 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
IDT (Integrated Device Technology), now part of Renesas Electronics, designs high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.
The 70V659S10BFG belongs to IDT's high-speed asynchronous dual-port SRAM product line, engineered specifically for deterministic, low-latency inter-processor communication in real-time embedded systems.
FAQ
What is the maximum operating frequency supported by the 70V659S10BFG?
The 70V659S10BFG does not use a clock; it is an asynchronous device. Its performance is specified by access time: 10 ns maximum read cycle time (tRC) enables reliable operation in systems with effective clock rates up to 100 MHz when interfaced with appropriate setup/hold margins. This value is guaranteed across the commercial temperature range (0°C to +70°C).
Does the 70V659S10BFG support both 3.3V and 2.5V I/O on the same device?
Yes - the 70V659S10BFG supports independent I/O voltage selection per port. OPTL and OPTR pins configure left and right I/O banks separately: VIH selects 3.3V operation (VDDQL/VDDQR = 3.3V), VIL selects 2.5V operation (VDDQL/VDDQR = 2.5V). This allows one port to interface with 3.3V FPGA banks while the other connects to 2.5V ASIC logic - all within a single 70V659S10BFG device.
How does the BUSY signal function in Master/Slave configuration with the 70V659S10BFG?
In Master mode (M/S = VIH), the 70V659S10BFG asserts BUSY as an output to block conflicting accesses from a Slave device. In Slave mode (M/S = VIL), BUSY is an input that must be monitored before initiating writes. When two 70V659S10BFG devices are cascaded, the Master's BUSY output connects to the Slave's BUSY input - enabling hardware-enforced serialization of memory accesses without software intervention.
Can the 70V659S10BFG be used for semaphore-based synchronization between two processors?
Yes - the 70V659S10BFG includes dedicated hardware semaphore logic with eight shared flags accessible via A0–A2. Processors write to I/O0 to set flags and read all I/O lines to check status. The 70V659S10BFG guarantees atomic semaphore updates and resolves contention via built-in arbitration, eliminating race conditions and reducing inter-processor synchronization latency to under 5 ns.
What package type and dimensions does the 70V659S10BFG use?
The 70V659S10BFG uses a 208-ball fine-pitch Ball Grid Array (BGA) package (package code BFG208), with 0.8 mm ball pitch and a 15 mm × 15 mm body size. This RoHS-compliant, green-part-qualified package supports high-density PCB layouts and meets IPC-7351 standards for automated assembly and thermal reliability in industrial and telecom applications.
70V659S10BFG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 208-LFBGA
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 4.5Mbit
- Memory Organization:
- 128K x 36
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 10ns
- Access Time:
- 10 ns
- Voltage - Supply:
- 3.15V ~ 3.45V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 208-CABGA (15x15)
70V659S10BFG FAQ
1.How can I place an order for 70V659S10BFG through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V659S10BFG 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 70V659S10BFG reliable?
The price and inventory of 70V659S10BFG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V659S10BFG is usually 5 days.
3.What payment methods are accepted for 70V659S10BFG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V659S10BFG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V659S10BFG?
70V659S10BFG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V659S10BFG 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 70V659S10BFG?
For technical support, including 70V659S10BFG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V659S10BFG requirements.
6.How does Aetrix verify that 70V659S10BFG is sourced from the original manufacturer or authorized distributors?
All 70V659S10BFG 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 70V659S10BFG meets industry standards.
7.What is the process for return or replacement of 70V659S10BFG?
All 70V659S10BFG units undergo pre-shipment inspection (PSI). If there is an issue with 70V659S10BFG, 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 70V659S10BFG part is unused and in its original packaging.
Return procedure for 70V659S10BFG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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