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Renesas 70V658S12BFGI8
- Part No.:
- 70V658S12BFGI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 208-LFBGA
- Datasheet:
-
70V658S12BFGI8.pdf
- Description:
- IC SRAM 2MBIT PARALLEL 208CABGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,229
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Product details
Overview
70V658S12BFGI8 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 I/Os, and on-chip semaphore arbitration logic - used in real-time inter-processor communication, FPGA co-processing buffers, and legacy bus bridging applications.
For engineers reviewing the 70V658S12BFGI8 datasheet, 70V658S12BFGI8 pinout, 70V658S12BFGI8 application, or 70V658S12BFGI8 equivalent, this page delivers verified specifications, validated pin functions, industrial-grade timing behavior, JTAG-compliant test support, and precise dual-voltage I/O configuration guidance for system-level integration.
Technical Context
This device implements fully asynchronous dual-port SRAM architecture with separate address, control, and data buses per port - enabling simultaneous read/write to the same memory location without external arbitration logic. It supports master/slave cascading for 72-bit+ word expansion using M/S pin and BUSY flag coordination.
Each port independently selects I/O voltage (3.3 V or 2.5 V) via dedicated OPTL/OPTR pins, with corresponding VDDQL/VDDQR supplies. On-chip semaphore logic provides eight shared flags accessible via A0–A2, supporting mutual exclusion in multi-processor systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 36 bits (2.25 Mbit total); A16 is NC - effective address range: A0–A15 (64K depth) |
| Access Time (tAA) | 12 ns max - guarantees deterministic read latency under worst-case commercial/industrial conditions |
| I/O Voltage Support | Per-port selectable 3.3 V (±150 mV) or 2.5 V (±100 mV) - enables mixed-voltage system interfacing |
| Operating Temperature | –40°C to +85°C - qualified for industrial ambient environments without derating |
| Power Supply | VDD = 3.3 V ±150 mV (core); VDDQ = 3.3 V or 2.5 V (I/O) - decoupled supply domains prevent noise coupling |
| JTAG Compliance | IEEE 1149.1 compliant - supports boundary-scan testing and in-system debug of connected logic |
| Arbitration Logic | Hardware semaphore, BUSY flag, and interrupt signaling - eliminates need for external arbitration circuitry |
Pinout & Package
70V658S12BFGI8 is packaged in a 208-ball fine-pitch BGA (BFG208), 15 mm × 15 mm × 1.4 mm body, 0.8 mm ball pitch. All VDD pins require 3.3 V; VDDQL/VDDQR must match OPTL/OPTR selection (3.3 V or 2.5 V); all VSS pins connect to ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE0L / CE0R | Chip Enable (Left/Right) | Active-low enable for port-specific memory access - dual CE per port enables depth expansion without glue logic |
| R/WL / R/WR | Read/Write Control (Left/Right) | Determines direction of data transfer; high = read, low = write - asynchronous operation requires no clock |
| BE0L–BE3L / BE0R–BE3R | Byte Enables (9-bit groups) | Independent 9-bit write masking per port - supports partial writes to I/O0–8, I/O9–17, I/O18–26, I/O27–35 |
| A0L–A15L / A0R–A15R | Address Inputs (Left/Right) | 16-bit address bus per port - A16 is No Connect per datasheet Note 1, confirming 64K depth |
| I/O0L–I/O35L / I/O0R–I/O35R | Bidirectional Data Bus (Left/Right) | 36-bit parallel interface per port - supports simultaneous full-word or byte-aligned transfers |
| OPTL / OPTR | I/O Voltage Select (Left/Right) | VIH = 3.3 V I/O mode; VIL = 2.5 V I/O mode - configures VDDQL/VDDQR voltage domain and input thresholds |
| M/S | Master/Slave Select | VIH = BUSY output (master); VIL = BUSY input (slave) - enables daisy-chained arbitration in multi-device systems |
| SEML / SEMR | Semaphore Enable | Enables access to 8-bit semaphore register via A0–A2 - critical for inter-processor synchronization |
| BUSYL / BUSYR | Busy Flag (Left/Right) | Open-drain totem-pole output - signals contention during simultaneous access to same address |
| TCK / TMS / TDI / TDO / TRST | JTAG Test Interface | Standard IEEE 1149.1 boundary-scan chain - enables production test and debug without intrusive probing |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Simultaneous independent read/write to identical memory locations - eliminates arbitration wait states in real-time systems |
| Configurable I/O Voltage Per Port | Independent 3.3 V/2.5 V selection via OPTL/OPTR - allows seamless interfacing with mixed-voltage FPGAs or ASICs |
| Hardware Semaphore Logic | Eight shared flags accessed via A0–A2 - reduces software overhead and race conditions in multi-core IPC |
| Master/Slave Cascading | Supports 72-bit+ word expansion using M/S and BUSY signals - avoids external logic for wide-memory systems |
| Low-Power Standby Modes | ISB3 = 3–6 mA (full CMOS standby); ISB1 = 75–115 mA (TTL standby) - enables power-aware system sleep states |
Applications
| Real-Time Inter-Processor Communication | FPGA Co-Processing Buffer |
|---|---|
|
Use Scenario: Two microcontrollers exchange status, commands, and sensor data with deterministic latency and no software arbitration. IC Role / Device Role / Timing Role: Shared memory buffer with hardware semaphore and BUSY flag - acts as synchronized message queue between CPUs. Use Value: Eliminates polling loops and OS-level mutexes; 12 ns access ensures sub-microsecond interlock response. |
Use Scenario: An FPGA offloads compute-intensive tasks while a host processor manages I/O and control flow. IC Role / Device Role / Timing Role: High-bandwidth bidirectional data staging area - accepts burst writes from FPGA and feeds sequential reads to CPU. Use Value: 36-bit width and dual-port concurrency sustain >160 MB/s sustained throughput without DMA bottlenecks. |
| Legacy Bus Bridging | Industrial Motion Controller Memory |
|
Use Scenario: Translating between an older 16-bit ISA bus and a modern 32-bit local bus in retrofit equipment. IC Role / Device Role / Timing Role: Asynchronous protocol translator - absorbs timing skew and voltage mismatches between dissimilar buses. Use Value: Independent left/right timing (tAA = 12 ns) and per-port I/O voltage selection (2.5 V/3.3 V) ensure reliable level-shifting. |
Use Scenario: Storing real-time trajectory tables and encoder feedback buffers in servo drives operating at –40°C to +85°C. IC Role / Device Role / Timing Role: Deterministic-access scratchpad memory - holds motion profiles and PID coefficients with guaranteed timing. Use Value: Industrial temperature rating and 12 ns access enable jitter-free position loop execution at 20 kHz update rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1365KV18-125BZI | 18-bit bus width, 125 MHz synchronous interface, 2.5 V core/I/O - no asynchronous operation or per-port voltage select | Requires clocked system design; lacks hardware semaphore and BUSY arbitration - needs external logic for multi-CPU sync | Choose when migrating to synchronous, higher-throughput systems with FPGA-based controllers and no legacy bus constraints |
| IDT70V659S12BFGI8 | 128K × 36 organization (double density); identical pinout, timing, and feature set - A16 functional instead of NC | Direct upgrade path for systems requiring >2.25 Mbit memory without layout change - same thermal and power profile | Choose when memory footprint expansion is needed but PCB redesign is prohibited; retains full 70V658S12BFGI8 compatibility |
Compared with CY7C1365KV18-125BZI, 70V658S12BFGI8 delivers true asynchronous operation and hardware arbitration essential for legacy or real-time deterministic systems; compared with IDT70V659S12BFGI8, it offers cost-optimized 64K density where full 128K is unnecessary - reducing BOM cost without sacrificing timing or interface flexibility.
Availability
70V658S12BFGI8 is available at Aetrix Electronics and suitable for real-time inter-processor communication, FPGA co-processing buffers, and industrial motion controller memory requiring stable component supply across extended product lifecycles.
Supply support for 70V658S12BFGI8 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 semiconductor company specializing in timing, memory interface, and RF solutions, now part of Renesas Electronics since 2019.
The IDT70V658 family targets high-reliability, low-latency memory interfacing in industrial, aerospace, and communications infrastructure - designed for systems demanding deterministic dual-port access without software arbitration overhead.
FAQ
What is the memory depth and width of the 70V658S12BFGI8?
The 70V658S12BFGI8 provides a 64K × 36-bit organization (2.25 Mbit total). Address lines A0–A15 are functional; A16 is a no-connect per datasheet Note 1 - confirming the 64K depth. Each port supports full 36-bit parallel data transfer, with byte-enable granularity for 9-bit sub-word writes.
Does the 70V658S12BFGI8 support both 3.3 V and 2.5 V I/O interfaces simultaneously?
Yes - the 70V658S12BFGI8 supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL = VIH and OPTR = VIL configures left port for 3.3 V operation and right port for 2.5 V operation, with corresponding VDDQL and VDDQR supplies. This enables direct interfacing with mixed-voltage SoCs or FPGAs.
How does the BUSY flag function in master/slave configurations with the 70V658S12BFGI8?
When M/S = VIH, the 70V658S12BFGI8 operates as a master and asserts BUSYL/BUSYR as outputs to block conflicting writes from slave devices. When M/S = VIL, it acts as a slave and monitors BUSY as an input to inhibit its own write cycles during contention. The tBDD parameter (12 ns max) defines the delay from BUSY assertion to valid read data.
Can the 70V658S12BFGI8 be used in industrial temperature applications?
Yes - the 70V658S12BFGI8 is qualified for –40°C to +85°C operation (industrial grade), with timing parameters including tAA = 12 ns max and tWC = 12 ns max fully specified across this range. Power consumption metrics (e.g., ISB2 = 200 mA max) and DC characteristics are also validated across the full industrial temperature span.
What is the role of the semaphore logic in the 70V658S12BFGI8, and how is it accessed?
The 70V658S12BFGI8 includes eight hardware semaphore flags accessible via I/O0–I/O35 using address lines A0–A2. Access requires CE = VIH and SEM = VIL (per Truth Table II). Reads return the flag state on all 36 I/Os; writes use I/O0 only. This enables lock-free synchronization between processors without software overhead or risk of race conditions.
70V658S12BFGI8 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:
- 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:
- 208-CABGA (15x15)
70V658S12BFGI8 FAQ
1.How can I place an order for 70V658S12BFGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V658S12BFGI8 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 70V658S12BFGI8 reliable?
The price and inventory of 70V658S12BFGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V658S12BFGI8 is usually 5 days.
3.What payment methods are accepted for 70V658S12BFGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V658S12BFGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V658S12BFGI8?
70V658S12BFGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V658S12BFGI8 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 70V658S12BFGI8?
For technical support, including 70V658S12BFGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V658S12BFGI8 requirements.
6.How does Aetrix verify that 70V658S12BFGI8 is sourced from the original manufacturer or authorized distributors?
All 70V658S12BFGI8 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 70V658S12BFGI8 meets industry standards.
7.What is the process for return or replacement of 70V658S12BFGI8?
All 70V658S12BFGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 70V658S12BFGI8, 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 70V658S12BFGI8 part is unused and in its original packaging.
Return procedure for 70V658S12BFGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V658S12BFGI8 Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
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24LC01BT-I/OT
Microchip Technology
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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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