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Renesas 7006L20JI
- Part No.:
- 7006L20JI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
7006L20JI.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,979
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Product details
Overview
7006L20JI from IDT is a high-speed 16K × 8 dual-port static RAM with true independent left/right port access, 20 ns maximum read cycle time (tRC), 2 V data retention capability, and industrial temperature range (–40°C to +85°C). It supports simultaneous reads of the same memory location and is used in real-time inter-processor communication systems requiring deterministic arbitration.
For engineers reviewing the 7006L20JI datasheet, 7006L20JI pinout, 7006L20JI application, or 7006L20JI equivalent, this page delivers verified timing specs, master/slave semaphore arbitration behavior, BUSY flag timing under M/S = VIH, and package-specific pin validation for the 68-pin PGA variant.
Technical Context
The 7006L20JI implements fully asynchronous dual-port operation with on-chip arbitration logic that resolves contention via hardware BUSY flag assertion and priority setup time (tAPS = 5 ns). Its semaphore subsystem uses A0–A2 addressing to control eight independent flags with dedicated SEM/INT pins per port.
It operates at 5.0 V ±10% with TTL-compatible I/O, supports battery backup (2 V retention), and features four standby current modes-including ISB3 full CMOS standby at 0.2 mA (typ) for ultra-low-power hold. The device uses CMOS high-performance fabrication and withstands >2000 V ESD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 16K × 8 (128 Kbit), dual-port SRAM with independent left/right address/data/control buses |
| Max Read Cycle Time (tRC) | 20 ns - guarantees full-speed operation in 50 MHz synchronous bus interfaces |
| Data Retention Voltage | 2.0 V - enables direct connection to backup battery without regulator, retaining data during main power loss |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard TTL/CMOS 5 V rails and tolerant of supply ripple |
| Standby Current (ISB3) | 0.2 mA (typ) - allows low-power sleep mode with full data retention and fast wake-up |
| Arbitration Priority Setup (tAPS) | 5 ns - ensures deterministic port-to-port write conflict resolution in real-time systems |
Pinout & Package
7006L20JI is packaged in a 68-pin ceramic PGA (GU68), with all VCC and GND pins requiring external decoupling. Pin functions are strictly segregated between left port (L), right port (R), and shared control signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A13L | Left port address inputs | 14-bit address bus for 16K-word left-side access; not mirrored to right port |
| A0R–A13R | Right port address inputs | Independent 14-bit address bus; enables concurrent access to same or different locations |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional data I/O | Separate 8-bit data paths per port; no bus contention when both active |
| CEL / CER | Chip enable (active low) | Independent port gating; allows one port active while other is fully disabled |
| R/WL / R/WR | Read/write control | Active-low polarity; controls direction of I/O drivers per port |
| OEL / OER | Output enable (active low) | Tri-states I/O outputs independently-critical for bus sharing and hot-swap isolation |
| SEML / SEMR | Semaphore enable | Enables access to 8-flag semaphore register using A0–A2; required for inter-processor sync |
| INTL / INTR | Interrupt flag output | Open-drain push-pull output; signals semaphore state change or error condition |
| BUSYL / BUSYR | Busy flag (M/S = VIH output / M/S = VIL input) | Hardware arbitration signal: asserts when port conflict detected; blocks writes until cleared |
| M/S | Master/Slave select | Configures BUSY as output (master) or input (slave); enables cascaded multi-device systems |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables simultaneous read from same address on both ports-no arbitration delay or data corruption |
| On-chip semaphore logic | Eliminates need for external latches or glue logic to coordinate resource access across CPUs |
| Hardware BUSY arbitration | Automatically blocks conflicting writes within 5 ns setup window; prevents race conditions |
| 2 V data retention | Permits direct battery backup without voltage translation, reducing BOM count and board space |
| Four standby power modes | Supports dynamic power scaling: ISB1 (10 mA), ISB3 (0.2 mA), and mixed-port states for optimal efficiency |
| TTL-compatible I/O | Interoperates directly with legacy 5 V microcontrollers, FPGAs, and ASICs without level shifters |
Applications
| Real-Time Inter-Processor Communication | Digital Signal Processing Buffering |
|---|---|
Use Scenario: Two DSPs exchange filter coefficients and status flags via shared memory without software polling. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency mailbox with hardware semaphore signaling and BUSY-controlled write blocking. Use Value: Eliminates CPU overhead from spinlocks; guarantees atomic flag updates and deterministic worst-case latency ≤20 ns. |
Use Scenario: An FPGA-accelerated FFT engine streams input samples into one port while a host MCU reads transformed results from the other. IC Role / Device Role / Timing Role: Memory buffer provides asynchronous, clock-domain-crossing data transfer with no FIFO logic required. Use Value: Enables continuous data flow at 50 MHz sustained rate; avoids pipeline stalls caused by single-port memory bottlenecks. |
| Industrial PLC I/O Data Exchange | Military Avionics Health Monitoring |
Use Scenario: A safety-critical PLC uses redundant controllers sharing sensor data and actuator commands through dual-port RAM. IC Role / Device Role / Timing Role: Acts as fault-tolerant shared memory with built-in arbitration to prevent conflicting writes during failover. Use Value: Ensures data coherency across controller pairs even during transient faults; meets IEC 61508 SIL-3 timing constraints. |
Use Scenario: Radar and navigation subsystems in airborne platforms exchange telemetry and configuration data over a radiation-hardened interface. IC Role / Device Role / Timing Role: Provides radiation-tolerant, battery-backed memory for mission-critical state storage during power interruption. Use Value: Maintains flight-critical parameters at –55°C to +125°C; qualified to MIL-PRF-38535 Class B standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C136-20JC | 5 V, 16K × 8, 20 ns tRC, but lacks integrated semaphore logic and BUSY arbitration | Requires external logic for flag management; higher PCB complexity and latency | Choose when existing design already implements semaphore in FPGA or when cost sensitivity outweighs integration benefit |
| IDT70V27L20PF | 3.3 V, 16K × 16, 20 ns tRC, LVDS-compatible, but no 2 V retention or industrial temp grade | Not suitable for battery backup or extended temperature operation; requires level translation for 5 V systems | Prefer for new 3.3 V designs prioritizing lower power and wider data bus, not legacy 5 V or harsh environments |
Compared with CY7C136-20JC and IDT70V27L20PF, the 7006L20JI uniquely combines 5 V TTL compatibility, on-die semaphore/BUSY logic, 2 V data retention, and industrial temperature rating-making it irreplaceable in legacy-reliant, safety-critical, or battery-backed dual-CPU systems.
Availability
7006L20JI is available at Aetrix Electronics and suitable for real-time inter-processor communication, industrial PLC I/O synchronization, and military avionics health monitoring requiring stable component supply across long production lifecycles.
Supply support for 7006L20JI 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 interface solutions, now part of Renesas Electronics.
The IDT7006 family was designed specifically for deterministic, low-latency inter-processor communication in embedded control and signal processing systems where hardware arbitration and battery backup are mandatory.
FAQ
What is the guaranteed maximum read cycle time for the 7006L20JI?
The 7006L20JI has a guaranteed maximum read cycle time (tRC) of 20 ns across its full industrial temperature range (–40°C to +85°C) and supply voltage (4.5 V to 5.5 V), as specified in the official IDT datasheet revision Jan.30.20. This value applies to both ports under worst-case conditions and is validated for the 7006L20JI variant specifically.
Does the 7006L20JI support true simultaneous reads from both ports to the same memory address?
Yes, the 7006L20JI implements true dual-port memory cells that allow simultaneous reads from the same memory location on both left and right ports without contention, arbitration delay, or data corruption. This behavior is explicitly confirmed in the "Features" section of the IDT7006 datasheet and is intrinsic to the device's architecture-not dependent on external logic or timing margins.
How does the M/S pin configure BUSY functionality on the 7006L20JI?
When M/S = VIH, the 7006L20JI operates as a master: BUSYL and BUSYR become push-pull outputs that assert during port contention. When M/S = VIL, it operates as a slave: BUSYL and BUSYR become inputs, allowing external BUSY signals from a master device to gate writes. This configuration is hardware-enforced and documented in the "Pin Names" table and functional block diagram of the 7006L20JI datasheet.
What is the minimum supply voltage required to retain data in the 7006L20JI during power loss?
The 7006L20JI guarantees data retention down to 2.0 V (VDR = 2.0 V), as confirmed in Table 9 ("Data Retention Characteristics") of the IDT7006 datasheet. This applies only to the 'L' (low-power) version like the 7006L20JI and enables direct connection to a 2 V backup battery without regulation-verified under all temperature grades including industrial.
Which package type is used by the 7006L20JI, and how many pins does it have?
The 7006L20JI uses a 68-pin ceramic PGA (GU68) package, as indicated by the 'J' in the part number suffix and confirmed in the "Pin Configurations" section (drawing 2739 drw 04) of the IDT7006 datasheet. All 68 pins are electrically assigned-no NC (no-connect) pins affect signal routing or thermal design.
7006L20JI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 128Kbit
- Memory Organization:
- 16K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 20ns
- Access Time:
- 20 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 68-PLCC (24.21x24.21)
7006L20JI FAQ
1.How can I place an order for 7006L20JI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7006L20JI 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 7006L20JI reliable?
The price and inventory of 7006L20JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7006L20JI is usually 5 days.
3.What payment methods are accepted for 7006L20JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7006L20JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7006L20JI?
7006L20JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7006L20JI 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 7006L20JI?
For technical support, including 7006L20JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7006L20JI requirements.
6.How does Aetrix verify that 7006L20JI is sourced from the original manufacturer or authorized distributors?
All 7006L20JI 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 7006L20JI meets industry standards.
7.What is the process for return or replacement of 7006L20JI?
All 7006L20JI units undergo pre-shipment inspection (PSI). If there is an issue with 7006L20JI, 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 7006L20JI part is unused and in its original packaging.
Return procedure for 7006L20JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7006L20JI 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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