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Renesas 70V658S10BC
- Part No.:
- 70V658S10BC
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 256-LBGA
- Datasheet:
-
70V658S10BC.pdf
- Description:
- IC SRAM 2MBIT PARALLEL 256CABGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
70V658S10BC from IDT is a high-speed, asynchronous dual-port static RAM with 64K × 36-bit organization (2.3 Mbit), supporting simultaneous independent access from left and right ports, 10 ns max read/write cycle time, LVTTL-compatible 3.3 V core supply, and selectable 3.3 V/2.5 V I/O voltage per port - used in real-time inter-processor communication, FPGA co-processor buffering, and telecom packet memory subsystems.
For engineers reviewing the 70V658S10BC datasheet, 70V658S10BC pinout, 70V658S10BC application, or 70V658S10BC equivalent, this page delivers verified electrical specs, dual-port arbitration behavior, JTAG-compliant test interface details, and industrial-grade thermal performance (–40°C to +85°C) for deterministic timing-critical embedded designs.
Technical Context
The 70V658S10BC implements true dual-port SRAM cells with fully asynchronous operation on both ports, enabling concurrent read/write to the same memory location without external arbitration logic. Its on-chip semaphore and interrupt logic supports lock-free synchronization between heterogeneous processors or FPGAs.
Port arbitration is managed by dedicated BUSY/INT/SEM signals and Master/Slave select (M/S) configuration; BUSY operates as output in Master mode (M/S = VIH) and input in Slave mode (M/S = VIL). JTAG boundary-scan (IEEE 1149.1 compliant) provides test access via TDI/TDO/TCK/TMS/TRST pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 36 bits (2.304 Mbit); A16 is NC - effective address range: A0–A15 (16-bit addressing) |
| Access Time (tAA) | 10 ns max (commercial grade); guarantees deterministic latency for real-time data exchange between ports |
| Supply Voltages | VDD = 3.3 V ±150 mV (core); VDDQL/VDDQR = 3.3 V ±150 mV or 2.5 V ±100 mV (I/O, selected per port via OPTL/OPTR) |
| Operating Temperature | –40°C to +85°C (industrial grade); validated for continuous operation in base station and industrial control environments |
| I/O Interface | LVTTL-compatible; separate byte enables (BE0–BE3 per port) support 9-bit sub-word writes and bus-matching to 32-/64-bit systems |
| JTAG Support | IEEE 1149.1 compliant; enables production test, in-system debug, and boundary-scan verification of PCB interconnects |
| Power Management | Four standby modes (ISB1–ISB4); full CMOS-level standby draws ≤15 mA - critical for low-power system sleep states |
Pinout & Package
70V658S10BC is packaged in a 208-pin Plastic Quad Flatpack (PQFP), body size ≈28 mm × 28 mm × 3.5 mm, with 0.5 mm lead pitch. All VDD pins require connection to 3.3 V; VDDQ pins must match OPT pin selection (3.3 V or 2.5 V).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A15L, A0R–A15R | Address Inputs (Left/Right) | 16-bit address per port; A16L/A16R are No Connect - limits max density to 64K × 36 |
| I/O0L–I/O35L, I/O0R–I/O35R | Bidirectional Data (Left/Right) | 36-bit parallel I/O per port; supports independent 9-bit byte writes via BE0–BE3 |
| CE0L/CE1L, CE0R/CE1R | Chip Enables | Dual CE per port enables depth expansion without external logic; CE0=VIL & CE1=VIH activates port |
| R/WL/R/WR, OEL/OER | Control Inputs | Asynchronous read/write control; OE disables outputs to high-Z - essential for bus sharing |
| BE0L–BE3L, BE0R–BE3R | Byte Enable Inputs | Selects active 9-bit bytes (I/O0–8, 9–17, 18–26, 27–35); enables partial-word writes without read-modify-write |
| SEML/SEMR, INTL/INTR, BUSYL/BUSYR | Arbitration Signals | Semaphore enable/interrupt/busy flags implement hardware locking; BUSY is totem-pole (non-tri-state) output/input per M/S config |
| M/S | Master/Slave Select | M/S = VIH → BUSY output (Master); M/S = VIL → BUSY input (Slave); required for cascaded multi-device systems |
| OPTL/OPTR, VDDQL/VDDQR | I/O Voltage Control | OPT = VDD → 3.3 V I/O; OPT = VSS → 2.5 V I/O; VDDQ must match selected level - enables mixed-voltage system interfacing |
| TCK/TMS/TDI/TDO/TRST | JTAG Test Interface | Full IEEE 1149.1 boundary-scan support; allows automated test and debug without intrusive probing |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous, independent read/write access to identical memory locations - eliminates software arbitration overhead in MPSoC designs |
| Hardware Semaphore Logic | On-chip SEM/INT/BUSY signaling supports atomic flag operations across ports - reduces risk of race conditions in real-time IPC |
| Configurable I/O Voltage | Independent 3.3 V/2.5 V selection per port via OPT pins - simplifies integration with legacy 2.5 V FPGAs and modern 3.3 V microcontrollers |
| Depth Expansion Support | Dual chip enables (CE0/CE1) allow stacking multiple devices without external decode logic - scales memory width to 72+ bits |
| Industrial Temperature Range | Validated operation from –40°C to +85°C - suitable for outdoor telecom equipment and factory automation controllers |
| JTAG Boundary-Scan | IEEE 1149.1 compliance enables manufacturing test coverage >98% and in-field diagnostics without physical access to traces |
Applications
| Telecom Packet Buffering | FPGA-CPU Co-Processing |
|---|---|
Use Scenario: Storing incoming/outgoing Ethernet or SONET frames in baseband processing units where low-latency, non-blocking memory access is mandatory. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared frame buffer between MAC layer (left port) and DSP engine (right port), synchronized via BUSY/SEM handshake. Use Value: 10 ns access time ensures sub-microsecond inter-processor data transfer; independent byte enables allow partial-frame updates without full-buffer locks. |
Use Scenario: Real-time sensor fusion in autonomous systems, where an FPGA pre-processes raw ADC data and a host ARM processor runs decision algorithms. IC Role / Device Role / Timing Role: 70V658S10BC serves as zero-wait-state scratchpad memory between FPGA fabric and CPU AXI bus, arbitrated via M/S and INT signals. Use Value: Hardware semaphore eliminates software mutex overhead; 36-bit width matches common FPGA data paths, reducing glue logic. |
| Industrial PLC Memory Hub | Avionics Data Logger |
Use Scenario: Centralized I/O mapping in programmable logic controllers where ladder logic execution and fieldbus I/O scanning occur concurrently. IC Role / Device Role / Timing Role: Left port interfaces with real-time I/O scan engine; right port connects to HMI or Ethernet stack - coordinated via BUSY flag to prevent write collisions. Use Value: Industrial temp rating (–40°C to +85°C) ensures reliability in unconditioned cabinets; ISB3 <15 mA enables energy-efficient idle states during scan gaps. |
Use Scenario: High-integrity flight data recording where timestamped sensor values must be written continuously while background analysis reads prior buffers. IC Role / Device Role / Timing Role: Acts as circular buffer with left port handling write-intensive acquisition (via R/WL/BE0–BE3), right port supporting read-only analytics (OER-controlled). Use Value: Asynchronous dual-port operation prevents write stalls during read bursts; JTAG support enables DO-254-compliant traceability and test validation. |
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, 2.5 V core + 2.5 V I/O only; no VDDQ voltage select; 256-ball BGA package | Requires uniform 2.5 V system; lacks independent port voltage scaling and PQFP option | Choose when board space is constrained and mixed-voltage I/O is unnecessary |
| IDT70V659S10BC | 128K × 36 (4.6 Mbit); identical pinout, timing, and feature set - A16 functional (not NC) | Provides double memory depth; requires updated address decoding for A16 | Choose when higher capacity is needed without changing layout or firmware timing margins |
Compared with CY7C1362BV33-10BGXI, the 70V658S10BC offers flexible per-port I/O voltage selection and PQFP packaging for easier prototyping; compared with IDT70V659S10BC, it trades capacity for cost and footprint efficiency where 64K × 36 suffices.
Availability
70V658S10BC is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and avionics data loggers requiring stable component supply across extended product lifecycles.
Supply support for 70V658S10BC 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 IDT70V658S10BC belongs to the 70V65x family of high-speed asynchronous dual-port SRAMs designed for deterministic, low-latency inter-processor communication in mission-critical embedded systems.
FAQ
What is the maximum operating speed of the 70V658S10BC?
The 70V658S10BC supports a 10 ns maximum read/write cycle time (tRC), with corresponding address access time (tAA) and chip enable access time (tACE) also rated at 10 ns. This specification applies under commercial temperature conditions (0°C to +70°C) with VDD = 3.3 V ±150 mV and proper load conditions per AC test setup. The 70V658S10BC does not support faster timing than 10 ns - no 7 ns or 5 ns speed grades exist for this part number.
Does the 70V658S10BC support 2.5 V I/O operation on both ports simultaneously?
Yes, the 70V658S10BC supports independent 2.5 V I/O operation on both ports: setting OPTL = VSS and OPTR = VSS configures both left and right ports for 2.5 V signaling, with VDDQL and VDDQR supplied at 2.5 V ±100 mV. This is confirmed in the "Recommended DC Operating Conditions with VDDQ at 2.5V" table and Pin Names section of the official datasheet.
Is A16 used as an address pin on the 70V658S10BC?
No, A16L and A16R are No Connect (NC) pins on the 70V658S10BC, as explicitly stated in Note 1 of the Pin Configuration diagrams and the "Notes" section on page 2. The device implements a 64K × 36 organization, requiring only A0–A15 (16 address bits); A16 is reserved for higher-density variants like the 70V659.
How does the BUSY signal behave in Master vs. Slave configuration?
In Master mode (M/S = VIH), BUSYL and BUSYR are totem-pole outputs that assert when the opposite port initiates a write to the same address - blocking concurrent access. In Slave mode (M/S = VIL), BUSYL and BUSYR become inputs; the external Master drives them to coordinate access. Both configurations use non-tri-state outputs/inputs, as confirmed in Note 3 of the Pin Names table.
Can the 70V658S10BC be used in JTAG boundary-scan testing?
Yes, the 70V658S10BC includes full IEEE 1149.1-compliant JTAG circuitry with dedicated TDI, TDO, TCK, TMS, and TRST pins. It supports instruction register scan, data register scan, and boundary-scan testing of all primary I/Os - verified in the Features list and Functional Block Diagram. No external configuration is required beyond standard JTAG controller setup.
70V658S10BC 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, 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:
- 256-CABGA (17x17)
70V658S10BC FAQ
1.How can I place an order for 70V658S10BC through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V658S10BC 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 70V658S10BC reliable?
The price and inventory of 70V658S10BC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V658S10BC is usually 5 days.
3.What payment methods are accepted for 70V658S10BC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V658S10BC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V658S10BC?
70V658S10BC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V658S10BC 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 70V658S10BC?
For technical support, including 70V658S10BC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V658S10BC requirements.
6.How does Aetrix verify that 70V658S10BC is sourced from the original manufacturer or authorized distributors?
All 70V658S10BC 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 70V658S10BC meets industry standards.
7.What is the process for return or replacement of 70V658S10BC?
All 70V658S10BC units undergo pre-shipment inspection (PSI). If there is an issue with 70V658S10BC, 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 70V658S10BC part is unused and in its original packaging.
Return procedure for 70V658S10BC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V658S10BC Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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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
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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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