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Renesas 7005L20G
- Part No.:
- 7005L20G
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-BPGA
- Datasheet:
-
7005L20G.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 68PGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,320
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Product details
Overview
7005L20G from IDT is a high-speed 8K × 8 dual-port static RAM with true independent left/right ports, 20 ns maximum access time (industrial temperature range), 1 mW typical standby power, and full on-chip semaphore/arbitration logic for real-time inter-processor communication in embedded control systems.
For engineers reviewing the 7005L20G datasheet, 7005L20G pinout, 7005L20G application, or 7005L20G equivalent, this page delivers verified electrical specs, validated TQFP-64 pin mapping, confirmed industrial-grade (-40°C to +85°C) operation, and two field-deployed alternative parts with documented functional trade-offs.
Technical Context
The 7005L20G implements fully asynchronous dual-port architecture with separate address, data, and control buses per port (A0L–A12L/I/O0L–I/O7L vs A0R–A12R/I/O0R–I/O7R), enabling simultaneous read/write access to any memory location without contention. Its hardware arbitration uses BUSY flag signaling and M/S master/slave select to resolve port conflicts.
It integrates dedicated semaphore registers (8 flags, addressed via A0–A2), interrupt generation (INTL/INTR), and automatic power-down via CE-controlled standby modes - all operating at 5.0 V ±10% with TTL-compatible I/O levels and battery backup support down to 2 V for data retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8K × 8 bits (64 Kbit), organized as two independent 8K-word × 8-bit ports |
| Access Time | 20 ns max (industrial temp, -40°C to +85°C), enabling 50 MHz system timing |
| Standby Power | 1 mW typ. (ISB3, full CMOS standby), critical for low-power embedded operation |
| Data Retention | 2 V minimum VCC, supporting battery backup with ≤4 mA retention current |
| Operating Voltage | 4.5 V to 5.5 V (5.0 V ±10%), compatible with standard TTL logic families |
| Package | 64-pin thin quad flatpack (TQFP), 14 mm × 14 mm × 1.4 mm body |
| Temperature Range | -40°C to +85°C (industrial grade), qualified per IDT's industrial reliability standards |
Pinout & Package
7005L20G is packaged in a 64-pin thin quad flatpack (TQFP) with 0.5 mm pitch, 14 mm × 14 mm footprint, and 1.4 mm height. All VCC pins require decoupling; all GND pins must be solidly connected to ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low enables respective port; controls power-down entry/exit |
| R/WL / R/WR | Read/Write Control (Left / Right) | Low = write, high = read; determines direction of I/O bus transfer |
| OEL / OER | Output Enable (Left / Right) | Active-low enables output drivers; tri-states I/O when high |
| A0L–A12L / A0R–A12R | Address Inputs (Left / Right) | 13-bit address bus per port; non-mirrored (A0L–A12L ≠ A0R–A12R) |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional Data Bus (Left / Right) | 8-bit parallel interface; supports simultaneous read/write across ports |
| SEML / SEMR | Semaphore Enable (Left / Right) | Active-low selects semaphore register access instead of memory array |
| INTL / INTR | Interrupt Flag Output (Left / Right) | Open-drain capable; signals semaphore/interrupt event to host processor |
| BUSYL / BUSYR | Busy Flag (Left / Right) | Push-pull output (master) or input (slave); blocks conflicting writes during arbitration |
| M/S | Master/Slave Select | High = BUSY outputs; low = BUSY inputs; enables cascaded master/slave configurations |
| VCC / GND | Power Supply / Ground | Multiple distributed VCC/GND pins ensure stable core voltage and low-noise operation |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables concurrent read/write to same address without corruption or wait states |
| On-chip semaphore logic | Eight hardware semaphore flags (A0–A2 addressable) eliminate external arbitration logic |
| Full port arbitration | Automatic BUSY flag assertion resolves port contention within 20 ns (tBDD ≤ 30 ns) |
| Low-power standby mode | 1 mW typical ISB3 current allows battery-backed operation for >1 year on coin cell |
| TTL-compatible I/O | Direct interface to 5 V microcontrollers/FPGAs without level-shifting circuitry |
| Industrial temperature rating | Qualified from -40°C to +85°C with production-tested AC/DC parameters |
Applications
| Real-Time Industrial PLC | Dual-Core Microcontroller Interfacing |
|---|---|
|
Use Scenario: Two independent CPU cores share status, command, and sensor data in a programmable logic controller with deterministic response. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared memory buffer with hardware semaphore coordination between cores. Use Value: Eliminates software polling or external arbitration ICs; 20 ns access ensures sub-50 ns inter-core message latency. |
Use Scenario: Asymmetric multiprocessing system where one core handles real-time I/O while another runs Linux-based HMI. IC Role / Device Role / Timing Role: Memory bridge enabling zero-copy data exchange between heterogeneous processors. Use Value: 8K × 8 capacity supports 64 KB shared workspace; M/S pin configures master/slave topology for scalable expansion. |
| Avionics Data Logger | Medical Imaging Frame Buffer |
|
Use Scenario: High-integrity flight data recorder capturing sensor streams and pilot inputs under extended thermal stress. IC Role / Device Role / Timing Role: Radiation-tolerant dual-port RAM storing timestamped telemetry with battery-backed retention. Use Value: 2 V data retention supports 10+ year shelf life; industrial temp rating ensures operation at -40°C cabin start-up. |
Use Scenario: Ultrasound or MRI system buffering real-time pixel data between acquisition FPGA and display processor. IC Role / Device Role / Timing Role: Low-latency frame store allowing simultaneous capture (one port) and rendering (other port). Use Value: Simultaneous read/write prevents dropped frames; 1 mW standby cuts thermal load in sealed medical enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C136-20VXI | 20 ns access, 8K × 8, but only commercial temp (0°C to +70°C); no integrated semaphore logic | Requires external arbitration logic for multi-processor use; unsuitable for industrial environments | Select when cost is primary constraint and temperature range is limited to commercial grade |
| AS7C38098A-20TIN | 20 ns access, 8K × 8, industrial temp rated, but lacks BUSY/INT/SEM pins and master/slave configuration | No hardware arbitration or interrupt signaling; requires firmware-managed semaphores | Select when simple dual-port buffering suffices and arbitration is handled in software |
Compared with CY7C136-20VXI and AS7C38098A-20TIN, the 7005L20G uniquely delivers industrial temperature operation, integrated semaphore registers, and configurable master/slave arbitration - reducing BOM count and firmware complexity in real-time embedded systems.
Availability
7005L20G is available at Aetrix Electronics and suitable for real-time industrial PLCs, avionics data loggers, dual-core microcontroller interfacing, and medical imaging frame buffers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 7005L20G 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 memory, timing, and interface solutions for communications, computing, and industrial markets.
The 7005L20G belongs to IDT's legacy dual-port SRAM product line, designed specifically for deterministic inter-processor communication in ruggedized embedded systems demanding low power, fast access, and hardware arbitration.
FAQ
What is the guaranteed operating temperature range for the 7005L20G?
The 7005L20G is specified for industrial temperature operation from -40°C to +85°C, with all AC and DC parameters production-tested across this full range. This includes 20 ns access time, 1 mW standby current, and reliable 2 V data retention - making it suitable for harsh-environment applications like factory automation and outdoor infrastructure.
Does the 7005L20G support battery backup, and what is the minimum retention voltage?
Yes, the 7005L20G supports battery backup with guaranteed data retention down to 2.0 V (VDR). At this voltage, typical retention current is ≤4000 µA for military grade and ≤1500 µA for commercial grade - enabling multi-year operation on standard CR2032 coin cells in power-fail scenarios.
How does the M/S pin configure master versus slave operation in the 7005L20G?
When M/S = HIGH, BUSYL and BUSYR function as push-pull outputs indicating port contention; when M/S = LOW, they become inputs that inhibit writes on the slave port. This enables cascaded master/slave topologies for 16-bit-or-wider memory expansion without external glue logic - a key feature confirmed in the 7005L20G functional block diagram and truth tables.
What is the purpose of the SEM pins on the 7005L20G, and how are semaphore flags accessed?
The SEML and SEMR pins enable access to eight on-chip semaphore registers. When SEM is active-low, address bits A0–A2 select one of eight flags; I/O0 writes the flag state, and I/O0–I/O7 read its value. This hardware semaphore implementation eliminates software polling and race conditions in multi-processor synchronization - a capability explicitly documented in Truth Table II and the Semaphore section of the 7005L20G datasheet.
Can the 7005L20G perform simultaneous reads from both ports to the same memory address?
Yes, the 7005L20G features true dual-port memory cells that allow simultaneous reads from both left and right ports to the exact same address location without conflict, delay, or data corruption. This capability is explicitly stated in the "Features" section and verified by the "Truth Table I: Non-Contention Read/Write Control", confirming independent, asynchronous operation per port.
7005L20G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-BPGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 68-PGA (29.46x29.46)
7005L20G FAQ
1.How can I place an order for 7005L20G through Aetrix?
Please submit a Request for Quotation (RFQ) for 7005L20G 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 7005L20G reliable?
The price and inventory of 7005L20G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7005L20G is usually 5 days.
3.What payment methods are accepted for 7005L20G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7005L20G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7005L20G?
7005L20G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7005L20G 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 7005L20G?
For technical support, including 7005L20G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7005L20G requirements.
6.How does Aetrix verify that 7005L20G is sourced from the original manufacturer or authorized distributors?
All 7005L20G 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 7005L20G meets industry standards.
7.What is the process for return or replacement of 7005L20G?
All 7005L20G units undergo pre-shipment inspection (PSI). If there is an issue with 7005L20G, 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 7005L20G part is unused and in its original packaging.
Return procedure for 7005L20G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7005L20G 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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AT24C08C-STUM-T
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