My Inquiry
My Account
Renesas 70V658S12BCI
- Part No.:
- 70V658S12BCI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 256-LBGA
- Datasheet:
-
70V658S12BCI.pdf
- Description:
- IC SRAM 2MBIT PARALLEL 256CABGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,798
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
70V658S12BCI from IDT is a high-speed 64K × 36 asynchronous dual-port static RAM with true independent left/right ports, 12 ns max access time (commercial/industrial), LVTTL-compatible 3.3 V core supply, and selectable 3.3 V/2.5 V I/O voltage per port via OPTL/OPTR pins. It enables simultaneous read/write to the same memory location in real-time communication buffers and FPGA co-processor interfaces.
For engineers reviewing the 70V658S12BCI datasheet, 70V658S12BCI pinout, 70V658S12BCI application, or 70V658S12BCI equivalent, this page delivers verified electrical specs, dual-port arbitration behavior, BUSY/INT flag timing, JTAG 1149.1 compliance, and industrial-grade thermal performance (–40°C to +85°C) for deterministic embedded memory design.
Technical Context
The 70V658S12BCI implements fully asynchronous dual-port operation with on-chip arbitration logic, semaphore signaling, and MASTER/SLAVE configuration via M/S pin. Each port has independent CE0/CE1, R/W, OE, BE0–BE3, and A0–A16 (A16 is NC), supporting depth expansion without external logic.
It features separate VDDQ supplies per port (3.3 V or 2.5 V), non-tri-state BUSY/INT outputs, and JTAG boundary-scan support compliant with IEEE 1149.1. The device supports 72-bit+ bus width expansion when cascaded with IDT70V659/657 using Master/Slave select mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 36 bits (2.25 Mbit total); supports 72-bit+ systems via Master/Slave cascading |
| Access Time (tAA) | 12 ns max - guarantees deterministic latency for real-time inter-processor data exchange |
| Operating Voltage | VDD = 3.3 V ±150 mV (core); VDDQL/VDDQR = 3.3 V ±150 mV or 2.5 V ±100 mV (I/Os, selectable per port) |
| Temperature Range | –40°C to +85°C - qualified for industrial embedded control and telecom infrastructure |
| Power Consumption | ISB3 = 6 mA max (full standby, CMOS inputs); IDD = 490 mA max (both ports active, 12 ns version) |
| JTAG Compliance | IEEE 1149.1 - enables in-system test and debug of memory interface integrity |
| Arbitration Logic | On-chip semaphore, BUSY flag, and INT flag - eliminates need for external arbitration circuitry |
Pinout & Package
70V658S12BCI 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; VDDQL/VDDQR must match OPTL/OPTR logic level (3.3 V if OPT = VDD, 2.5 V if OPT = VSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A15L | Left port address inputs | A16L is NC per datasheet Note 1; supports 64K depth (2^16 = 65,536 addresses) |
| A0R–A15R | Right port address inputs | A16R is NC; identical addressing capability ensures symmetrical dual-port access |
| I/O0L–I/O35L / I/O0R–I/O35R | Bi-directional data I/O (36-bit wide per port) | Byte-enable controlled (BE0–BE3) for 9-bit granularity writes/reads |
| CE0L/CE1L, CE0R/CE1R | Chip enable pairs per port | Dual CE allows depth expansion without glue logic; CE0=VIL & CE1=VIH enables port |
| R/WL/R/WR, OEL/OER | Read/write and output enable controls | Asynchronous control - no clock required; OE disables outputs to high-Z |
| BE0L–BE3L, BE0R–BE3R | Byte enable inputs (9-bit bytes) | Enables selective write/read of I/O0–8, 9–17, 18–26, 27–35 independently |
| BUSYL/BUSYR, INTL/INTR | Busy and interrupt flags | Non-tri-state totem-pole outputs; BUSY asserts during port contention or semaphore conflict |
| M/S | Master/Slave select | M/S = VIH → BUSY is output (Master); M/S = VIL → BUSY is input (Slave) |
| OPTL/OPTR | I/O voltage selection | OPT = VDD → 3.3 V I/O levels; OPT = VSS → 2.5 V I/O levels; independent per port |
| TMS/TCK/TDI/TDO/TRST | JTAG boundary-scan interface | Supports IEEE 1149.1 test access port for production test and system diagnostics |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables simultaneous, independent read/write to identical addresses - critical for lock-free inter-processor communication |
| On-chip semaphore signaling | Hardware-accelerated resource arbitration across ports without software overhead or external logic |
| Configurable I/O voltage per port | OPTL/OPTR allow mixed-voltage system integration (e.g., 3.3 V FPGA ↔ 2.5 V DSP) |
| Master/Slave cascading support | Enables 72-bit+ word width expansion using multiple devices with no external decode logic |
| Industrial temperature qualification | –40°C to +85°C operation validated per datasheet Table 4 - suitable for base station, motor control, and avionics |
| JTAG 1149.1 compliance | Full boundary-scan testability reduces board-level debug time and improves manufacturing yield |
Applications
| Telecom Line Card Buffering | FPGA-CPU Co-Processor Interface |
|---|---|
Use Scenario: High-throughput packet buffering between line interface ASIC and network processor in 10G Ethernet cards. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency shared memory buffer; left port connects to ASIC, right port to NPU. Use Value: 12 ns access enables full-line-rate packet forwarding; BUSY flag prevents data corruption during concurrent access. |
Use Scenario: Real-time data exchange between Xilinx Kintex FPGA and ARM Cortex-A9 application processor in industrial vision system. IC Role / Device Role / Timing Role: Serves as deterministic handshake memory; FPGA writes image metadata, CPU reads and processes. Use Value: Semaphore logic eliminates polling or software locks; 64K × 36 capacity supports multi-frame metadata queues. |
| Avionics Data Concentrator | Motor Control Safety Monitor |
Use Scenario: ARINC 429/664 data aggregation in flight control computer with dual-redundant processing channels. IC Role / Device Role / Timing Role: Memory hub synchronizing sensor inputs between primary and backup processors via dual-port arbitration. Use Value: –40°C to +85°C rating meets DO-160E environmental requirements; JTAG enables in-flight BIST verification. |
Use Scenario: Real-time torque/speed feedback storage between servo drive and safety PLC in ISO 13849 Cat 3 motion system. IC Role / Device Role / Timing Role: Fault-tolerant shared memory storing encoder timestamps and fault logs accessible by both controllers. Use Value: On-chip BUSY/INT flags provide hardware-enforced mutual exclusion; no software race conditions in safety-critical path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1362BV33-12BGXI | 64K × 36, 12 ns, 3.3 V core/I/O, 256-ball BGA only - no PQFP option; no JTAG support | Lacks per-port I/O voltage selection and semaphore logic; requires external arbitration for multi-master use | Select when BGA footprint and higher density are prioritized over field-serviceable PQFP and hardware semaphores |
| IDT70V659S12BCI | 128K × 36 (4 Mbit), same 12 ns speed, pin-compatible PQFP package, identical feature set | Higher density for larger buffer requirements; shares same timing, voltage, and arbitration architecture | Choose for direct upgrade path where memory depth > 64K is needed without redesigning PCB layout |
Compared with CY7C1362BV33-12BGXI, 70V658S12BCI provides hardware semaphore and flexible I/O voltage per port - reducing system-level complexity. Against IDT70V659S12BCI, it offers optimal cost/performance for 64K-depth applications without over-provisioning memory.
Availability
70V658S12BCI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and aerospace avionics requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for 70V658S12BCI 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 high-performance timing, memory, and RF solutions, now part of Renesas Electronics.
The IDT70V658 belongs to the 70V659/658/657 family of asynchronous dual-port SRAMs designed for deterministic, low-latency inter-processor communication in real-time embedded systems.
FAQ
What is the maximum operating temperature range for the 70V658S12BCI?
The 70V658S12BCI is rated for industrial temperature operation from –40°C to +85°C, as confirmed in datasheet Table 4. This specification applies to the "BCI" suffix variant and is validated under DC bias with no AC conditions applied, ensuring reliability in harsh environments such as factory automation and outdoor telecom equipment.
Does the 70V658S12BCI support JTAG boundary-scan testing?
Yes, the 70V658S12BCI supports IEEE 1149.1-compliant JTAG boundary-scan via dedicated TMS, TCK, TDI, TDO, and TRST pins. This enables full pin-level testability and interconnect verification without requiring physical probe access, critical for high-density PCBs used in networking and defense applications.
How does the BUSY flag function in Master vs Slave configuration on the 70V658S12BCI?
When M/S = VIH, the 70V658S12BCI operates as Master and drives BUSYL/BUSYR as outputs to signal port contention. When M/S = VIL, it acts as Slave and accepts BUSY as an input to inhibit writes during arbitration. This dual-mode behavior is defined in datasheet Notes 2 and 3 and enables flexible system-level arbitration topologies.
Can the left and right ports of the 70V658S12BCI operate at different I/O voltages?
Yes - OPTL and OPTR are independent inputs controlling VDDQL and VDDQR respectively. Setting OPTL = VDD configures the left port for 3.3 V I/O, while OPTR = VSS configures the right port for 2.5 V I/O. This mixed-voltage capability is explicitly documented in datasheet Table 1 and Note 2 on page 5.
What is the role of A16L and A16R in the 70V658S12BCI address mapping?
A16L and A16R are No-Connect (NC) pins for the 70V658S12BCI, as stated in datasheet Notes 1 and 3. The device implements 64K × 36 organization, requiring only A0–A15 (16 address lines = 65,536 locations). These pins are physically present but electrically unused and must be left unconnected or tied to ground per layout guidelines.
70V658S12BCI 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:
- 12ns
- Access Time:
- 12 ns
- Voltage - Supply:
- 3.15V ~ 3.45V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 256-CABGA (17x17)
70V658S12BCI FAQ
1.How can I place an order for 70V658S12BCI through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V658S12BCI 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 70V658S12BCI reliable?
The price and inventory of 70V658S12BCI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V658S12BCI is usually 5 days.
3.What payment methods are accepted for 70V658S12BCI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V658S12BCI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V658S12BCI?
70V658S12BCI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V658S12BCI 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 70V658S12BCI?
For technical support, including 70V658S12BCI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V658S12BCI requirements.
6.How does Aetrix verify that 70V658S12BCI is sourced from the original manufacturer or authorized distributors?
All 70V658S12BCI 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 70V658S12BCI meets industry standards.
7.What is the process for return or replacement of 70V658S12BCI?
All 70V658S12BCI units undergo pre-shipment inspection (PSI). If there is an issue with 70V658S12BCI, 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 70V658S12BCI part is unused and in its original packaging.
Return procedure for 70V658S12BCI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V658S12BCI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
