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Renesas 70V658S10BF8
- Part No.:
- 70V658S10BF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 208-LFBGA
- Datasheet:
-
70V658S10BF8.pdf
- Description:
- IC SRAM 2MBIT PARALLEL 208CABGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,210
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Product details
Overview
70V658S10BF8 from IDT is a high-speed 64K × 36 asynchronous dual-port static RAM with true independent left/right ports, 10 ns max access time (commercial grade), LVTTL-compatible 3.3 V core supply, and selectable 3.3 V/2.5 V I/O voltage per port. It enables simultaneous read/write to the same memory location in real-time embedded systems requiring deterministic arbitration.
For engineers reviewing the 70V658S10BF8 datasheet, 70V658S10BF8 pinout, 70V658S10BF8 application, or 70V658S10BF8 equivalent, key selection criteria include dual-port arbitration latency, byte-enable granularity for 9-bit subword access, JTAG IEEE 1149.1 compliance for boundary scan, and Master/Slave cascading support for 72-bit+ bus expansion without external logic.
Technical Context
This device implements fully asynchronous operation on both ports with independent CE0/CE1, R/W, OE, and BE0–BE3 controls per side. On-chip semaphore logic supports eight shared flags via A0–A2 addressing, and BUSY flag behavior changes based on M/S pin state-output when Master (M/S = VIH), input when Slave (M/S = VIL).
Port arbitration uses dedicated SEM, BUSY, and INT signals with totem-pole outputs (non-tri-state). The OPTL/OPTR pins independently configure each port's I/O voltage level (3.3 V or 2.5 V) by selecting VDDQL/VDDQR supply rails, enabling mixed-voltage system interfacing without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 36 bits (2.25 Mbit total, 1.125 Mbit per port) |
| Access Time (tAA) | 10 ns max - guarantees sub-100 MHz asynchronous bus timing margin |
| Core Supply (VDD) | 3.3 V ± 150 mV - fixed rail powering internal logic and array |
| I/O Voltage Support | Selectable 3.3 V or 2.5 V per port via OPTL/OPTR - enables mixed-voltage SoC interfacing |
| Operating Temperature | 0°C to +70°C (Commercial) - validated for industrial control HMI and telecom line cards |
| JTAG Compliance | IEEE 1149.1 - supports boundary-scan testing of PCB interconnects and BGA solder joints |
| Package | 208-ball fine-pitch BGA (BF208) - 15 mm × 15 mm, 0.8 mm ball pitch, RoHS-compliant |
Pinout & Package
70V658S10BF8 is housed in a 208-ball fine-pitch BGA (package code BF208), with 15 mm × 15 mm body size and 0.8 mm ball pitch. Power and ground balls are distributed across the array to minimize IR drop and EMI.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A16L(1) | Left port address inputs | A16L is no-connect for 70V658 - limits left port to 64K depth (A0–A15) |
| A0R–A16R(1) | Right port address inputs | A16R is no-connect - right port also limited to 64K depth |
| I/O0L–I/O35L / I/O0R–I/O35R | Bi-directional data buses | 36-bit wide per port; BE0–BE3 enable 9-bit byte writes independently |
| OPTL / OPTR | I/O voltage select inputs | Set to VDD (3.3 V) for 3.3 V I/O, VSS (0 V) for 2.5 V I/O - configures VDDQL/VDDQR rail usage |
| M/S | Master/Slave mode select | VIH → BUSYR/BUSYL become output flags; VIL → BUSYR/BUSYL become input flags for slave chaining |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables concurrent read/write to identical addresses - eliminates software locks in real-time DSP buffers |
| On-chip semaphore logic | Eight hardware flags accessible via A0–A2 - reduces CPU overhead in multi-processor resource sharing |
| Dual chip enables (CE0/CE1) | Supports depth expansion without external gating - simplifies memory bank decoding in large systems |
| Independent I/O voltage per port | OPTL/OPTR allow left port at 3.3 V and right port at 2.5 V - avoids external level translators in FPGA-to-ASIC interfaces |
| Master/Slave cascading | Enables 72-bit+ word width using IDT70V659/58/57 family - maintains full speed without glue logic |
Applications
| Telecom Line Card Buffering | Real-Time DSP Data Exchange |
|---|---|
Use Scenario: High-throughput packet buffering between line interface ASIC and network processor in 10Gbps Ethernet line cards. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency FIFO between ingress/egress data paths, synchronized via BUSY flag handshaking. Use Value: Eliminates external arbitration logic and guarantees deterministic 10 ns read/write response under full load. | Use Scenario: Shared memory between two TMS320C6000 DSP cores performing parallel FFT processing on sensor data streams. IC Role / Device Role / Timing Role: Memory serves as coherently accessed scratchpad with hardware semaphore for critical section protection. Use Value: Reduces inter-core synchronization latency by >40% versus software-based mutexes; supports 100% bus utilization. |
| FPGA-Based Protocol Converter | Industrial Motion Controller |
Use Scenario: Bridging AXI4-stream (3.3 V) and Avalon-MM (2.5 V) domains in Xilinx Kintex-7-based protocol translation modules. IC Role / Device Role / Timing Role: Left port interfaces FPGA at 3.3 V, right port connects to microcontroller at 2.5 V - voltage translation handled internally. Use Value: Removes four discrete level shifters and associated layout complexity; maintains signal integrity at 100 MHz burst rates. | Use Scenario: Coordinating motion trajectory data exchange between ARM Cortex-M7 motion planner and FPGA-based servo loop engine. IC Role / Device Role / Timing Role: Acts as deterministic shared buffer with BUSY-driven flow control between planner (Master) and executor (Slave). Use Value: Guarantees jitter-free position update delivery within 12 ns worst-case arbitration delay - meets <1 µs motion loop timing budget. |
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 | 64K × 36, 10 ns, 3.3 V only (no 2.5 V I/O option), 208-pin PQFP package | Lacks per-port voltage selection and JTAG; requires external level shifters for mixed-voltage systems | Prefer when footprint compatibility with legacy PQFP designs is required and voltage flexibility is unnecessary |
| AS7C362000B-10BIN | 64K × 36, 10 ns, 3.3 V core/I/O, 256-ball BGA (larger footprint than BF208) | No semaphore logic, no BUSY arbitration, no Master/Slave mode - pure dual-port without hardware coordination | Choose when only basic dual-access is needed and software-managed synchronization suffices |
Compared with CY7C1362BV33-10BGXI and AS7C362000B-10BIN, the 70V658S10BF8 uniquely delivers per-port I/O voltage selection, integrated semaphore arbitration, and Master/Slave cascading - reducing BOM count and improving determinism in real-time embedded systems.
Availability
70V658S10BF8 is available at Aetrix Electronics and suitable for telecom infrastructure, real-time DSP subsystems, FPGA-based protocol bridges, and industrial motion controllers requiring stable component supply across extended production lifecycles.
Supply support for 70V658S10BF8 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) is a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance interconnect solutions, now part of Renesas Electronics.
The IDT70V659/58/57 family was designed specifically for deterministic, low-latency dual-port memory applications in telecom, military, and industrial systems where hardware arbitration and mixed-voltage interoperability are critical.
FAQ
What is the maximum operating frequency supported by the 70V658S10BF8?
The 70V658S10BF8 does not operate on a clock; it is an asynchronous dual-port SRAM. Its performance is specified by access time: 10 ns maximum tAA and tRC, enabling reliable operation with bus cycles up to approximately 100 MHz in well-designed systems. Timing margins depend on board layout, termination, and drive strength - not a fixed clock frequency.
Does the 70V658S10BF8 support both 3.3 V and 2.5 V I/O on the same device?
Yes - the 70V658S10BF8 supports independent I/O voltage selection per port. OPTL configures the left port's I/O voltage (3.3 V or 2.5 V), and OPTR configures the right port's I/O voltage. This allows one port to interface with a 3.3 V FPGA while the other connects to a 2.5 V microcontroller, all within a single 70V658S10BF8 device.
How does the BUSY signal behave in Master vs. Slave configuration for the 70V658S10BF8?
When M/S = VIH, the 70V658S10BF8 operates as Master: BUSYL and BUSYR are active-high output flags indicating port contention. When M/S = VIL, it operates as Slave: BUSYL and BUSYR become active-high input signals used to stall write operations during arbitration - enabling daisy-chained multi-device configurations without external logic.
Can the 70V658S10BF8 be used in industrial temperature applications?
No - the 70V658S10BF8 is rated for commercial temperature range only (0°C to +70°C). For industrial applications (–40°C to +85°C), IDT specifies the 70V658S12BF8 variant. Using the 70V658S10BF8 outside its rated temperature range may result in timing violations or data retention failure.
What is the function of the SEM pin on the 70V658S10BF8?
The SEM (Semaphore Enable) pin on the 70V658S10BF8 selects access mode: when SEM = VIH, the device operates in standard RAM mode (addressed by A0–A15); when SEM = VIL, it accesses the eight hardware semaphore flags using A0–A2. This dual-mode operation enables atomic resource locking without CPU intervention - a key feature for multi-processor synchronization in the 70V658S10BF8.
70V658S10BF8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 208-LFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 2Mbit
- Memory Organization:
- 64K 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)
70V658S10BF8 FAQ
1.How can I place an order for 70V658S10BF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V658S10BF8 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 70V658S10BF8 reliable?
The price and inventory of 70V658S10BF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V658S10BF8 is usually 5 days.
3.What payment methods are accepted for 70V658S10BF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V658S10BF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V658S10BF8?
70V658S10BF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V658S10BF8 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 70V658S10BF8?
For technical support, including 70V658S10BF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V658S10BF8 requirements.
6.How does Aetrix verify that 70V658S10BF8 is sourced from the original manufacturer or authorized distributors?
All 70V658S10BF8 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 70V658S10BF8 meets industry standards.
7.What is the process for return or replacement of 70V658S10BF8?
All 70V658S10BF8 units undergo pre-shipment inspection (PSI). If there is an issue with 70V658S10BF8, 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 70V658S10BF8 part is unused and in its original packaging.
Return procedure for 70V658S10BF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V658S10BF8 Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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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
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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