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Renesas 7005L55PF
- Part No.:
- 7005L55PF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7005L55PF.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,942
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Product details
Overview
7005L55PF from IDT is a high-speed 8K × 8 dual-port static RAM with true independent left/right ports, 55 ns maximum read cycle time (tRC), 2 V data retention capability, and integrated semaphore/arbiter logic for inter-port synchronization. It operates on a single 5 V ±10% supply and supports industrial temperature range (–40°C to +85°C), making it suitable for real-time embedded systems requiring concurrent memory access.
For engineers reviewing the 7005L55PF datasheet, 7005L55PF pinout, 7005L55PF application, or 7005L55PF equivalent, key selection criteria include its 55 ns access timing, low standby current (1 mW typ.), master/slave arbitration via M/S pin, push-pull BUSY/INT outputs, and TQFP-64 packaging compatible with high-density PCB layouts.
Technical Context
The 7005L55PF implements fully asynchronous dual-port architecture with separate address, control, and I/O buses for left (L) and right (R) ports-A0L–A12L/I/O0L–I/O7L/CEL/OEL/R/WL and A0R–A12R/I/O0R–I/O7R/CER/OER/R/WR. Each port operates independently without clocking, enabling simultaneous reads from the same location.
On-chip hardware includes priority-based arbitration logic triggered by address match or chip enable assertion, semaphore flag management (8 flags addressed via A0–A2), and interrupt generation (INTL/INTR) controlled by dedicated addresses (e.g., 1FFFh for set, 1FFEh for reset). BUSYL/BUSYR are non-tri-stated push-pull signals used for contention resolution in master mode or write inhibition in slave mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8 bits (64 Kbit total); enables byte-wide parallel data transfer per port |
| Max Read Cycle Time (tRC) | 55 ns - defines minimum interval between successive read operations on same port |
| Active Power (typ.) | 700 mW - supports thermally constrained industrial designs with moderate throughput |
| Standby Current (typ.) | 1 mW - enables battery-backed operation with 2 V data retention for >10 years |
| Supply Voltage | 5.0 V ±10% - TTL-compatible interface simplifies integration with legacy 5 V logic systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade reliability in harsh environments |
| Package | 64-pin thin quad flatpack (TQFP) - 14 mm × 14 mm footprint with 0.5 mm pitch for compact layout |
Pinout & Package
7005L55PF is housed in a 64-pin thin quad flatpack (TQFP) package with 0.5 mm lead pitch and 14 mm × 14 mm body size. All VCC pins require decoupling; all GND pins must be connected to system ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A12L | Left port address inputs | 13-bit address bus selecting one of 8K locations for left-side access |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit parallel data path; direction controlled by R/WL and OEL |
| CEL, OEL, R/WL | Left port control enables | Chip Enable (active-low), Output Enable (active-low), Read/Write (active-low) |
| A0R–A12R | Right port address inputs | Independent 13-bit address bus for concurrent right-side access |
| I/O0R–I/O7R | Right port bidirectional data | Separate 8-bit data path; no shared bus contention with left port |
| CER, OER, R/WR | Right port control enables | Functionally identical to left-side controls but electrically isolated |
| SEML, SEMR | Semaphore enable inputs | Enable/disable access to 8 semaphore flags (addressed via A0–A2) |
| INTL, INTR | Interrupt flag outputs | Push-pull active-low flags set/cleared via dedicated addresses (1FFFh/1FFEh) |
| BUSYL, BUSYR | Arbitration status signals | In master mode: outputs indicating port contention; in slave mode: inputs blocking writes |
| M/S | Master/Slave select | High = BUSY outputs enabled (master); Low = BUSY inputs accepted (slave) |
| VCC, GND | Power and ground | Multiple VCC/GND pins distributed across package for low-noise power delivery |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables simultaneous read from identical address on both ports without conflict or latency penalty |
| Hardware semaphore signaling | Full on-chip support for 8 semaphore flags accessed via A0–A2, eliminating external logic for resource locking |
| Automatic power-down control | CE-driven standby mode reduces active current to 1 mW typ., critical for battery backup systems |
| Master/slave cascading capability | M/S pin configures device as master (BUSY output) or slave (BUSY input), enabling 16-bit+ word expansion |
| Robust ESD tolerance | Withstands >2001 V HBM electrostatic discharge, ensuring reliability during handling and assembly |
Applications
| Real-Time Digital Signal Processing | Industrial PLC Memory Buffer |
|---|---|
|
Use Scenario: Dual-core DSP system where one core writes sensor data while second core reads for FFT processing. IC Role / Device Role / Timing Role: Shared memory buffer with zero-wait-state concurrent access; 55 ns tRC ensures pipeline continuity. Use Value: Eliminates software-managed buffers and inter-core handshaking overhead, reducing deterministic latency by ≥3× vs. single-port SRAM. |
Use Scenario: Programmable logic controller storing ladder logic state tables and I/O image registers. IC Role / Device Role / Timing Role: Non-volatile shadow RAM holding configuration and runtime variables during power loss. Use Value: 2 V data retention preserves critical state for >10 years on backup battery, meeting IEC 61131-2 safety requirements. |
| Avionics Data Acquisition Hub | Medical Imaging Frame Store |
|
Use Scenario: Aircraft sensor fusion unit aggregating GPS, IMU, and radar inputs into synchronized time-stamped packets. IC Role / Device Role / Timing Role: Arbitrated memory interface coordinating timestamped writes from multiple sensors and reads by flight control processor. Use Value: Hardware BUSY/INT logic prevents race conditions during overlapping sensor bursts, ensuring atomic packet integrity at 10 kHz update rate. |
Use Scenario: Ultrasound machine capturing 12-bit echo data streams at 40 MHz and feeding beamformer ASICs. IC Role / Device Role / Timing Role: High-bandwidth frame buffer decoupling ADC capture (right port) from beamforming readout (left port). Use Value: 55 ns tRC and independent ports sustain 144 MB/s aggregate bandwidth, matching real-time video line-rate demands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C028V-55AXC | 55 ns tRC, 8K × 16 organization, 3.3 V supply only | Requires level-shifting for 5 V systems; wider data bus suits 16-bit processors | Select when migrating to 3.3 V architecture or needing 16-bit word access without cascading |
| IDT70V25L25PF | 25 ns tRC, 32K × 8, 3.3 V supply, LVDS-compatible I/O | Higher speed and density but incompatible voltage and signal standards | Choose for new 3.3 V designs demanding sub-30 ns latency and larger memory footprint |
Compared with CY7C028V-55AXC and IDT70V25L25PF, the 7005L55PF uniquely delivers 5 V compatibility, industrial temperature rating, and battery-retention capability in a cost-optimized 64-pin TQFP-making it irreplaceable for legacy 5 V real-time systems requiring long-term data persistence.
Availability
7005L55PF is available at Aetrix Electronics and suitable for real-time digital signal processing, industrial PLC memory buffering, and avionics data acquisition requiring stable component supply across extended product lifecycles.
Supply support for 7005L55PF 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, and RF solutions, acquired by Renesas in 2019.
The IDT7005 family was designed specifically for deterministic dual-access memory applications in military, industrial, and communications equipment where concurrent read/write operations and hardware arbitration are mandatory.
FAQ
What is the guaranteed maximum access time for the 7005L55PF?
The 7005L55PF guarantees a maximum read cycle time (tRC) of 55 ns across the full industrial temperature range (–40°C to +85°C) and supply voltage (4.5 V to 5.5 V). This includes worst-case propagation through address decode, memory cell access, and output driver stages-verified per AC Electrical Characteristics Table 13b in the official datasheet.
Does the 7005L55PF support battery backup operation?
Yes, the 7005L55PF supports battery backup with data retention down to 2 V (VDR), drawing only 100 µA typical current in retention mode. This allows continuous memory preservation during main power loss, validated over all temperature ranges and documented in DC Electrical Characteristics Table 9.
How does the M/S pin affect BUSY signal behavior on the 7005L55PF?
When M/S = HIGH, the 7005L55PF operates as a master: BUSYL and BUSYR become push-pull outputs asserting LOW during port contention. When M/S = LOW, it acts as a slave: BUSYL and BUSYR become inputs that inhibit writes when driven LOW by a master device-enabling hierarchical arbitration in multi-chip configurations.
Can the 7005L55PF perform simultaneous reads from both ports to the same memory address?
Yes, the 7005L55PF uses true dual-port memory cells allowing simultaneous reads from identical addresses on left and right ports without conflict, timing penalty, or data corruption-confirmed in the Features section and Truth Table I under "Non-Contention Read/Write Control."
What is the function of the semaphore flags in the 7005L55PF?
The 7005L55PF integrates eight hardware semaphore flags accessible via A0–A2 address lines and controlled by SEML/SEMR. These flags provide atomic resource locking between ports-used to coordinate access to shared peripherals or memory regions without software intervention or external logic.
7005L55PF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-LQFP
- 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:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (14x14)
7005L55PF FAQ
1.How can I place an order for 7005L55PF through Aetrix?
Please submit a Request for Quotation (RFQ) for 7005L55PF 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 7005L55PF reliable?
The price and inventory of 7005L55PF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7005L55PF is usually 5 days.
3.What payment methods are accepted for 7005L55PF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7005L55PF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7005L55PF?
7005L55PF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7005L55PF 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 7005L55PF?
For technical support, including 7005L55PF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7005L55PF requirements.
6.How does Aetrix verify that 7005L55PF is sourced from the original manufacturer or authorized distributors?
All 7005L55PF 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 7005L55PF meets industry standards.
7.What is the process for return or replacement of 7005L55PF?
All 7005L55PF units undergo pre-shipment inspection (PSI). If there is an issue with 7005L55PF, 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 7005L55PF part is unused and in its original packaging.
Return procedure for 7005L55PF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7005L55PF Tags
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