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Renesas 7025L20PF8
- Part No.:
- 7025L20PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7025L20PF8.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,414
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Product details
Overview
7025L20PF8 from IDT (Integrated Device Technology) is a high-speed 8K × 16-bit true dual-port static RAM with independent left/right ports, 20 ns maximum read cycle time, 1 mA typical standby current, and TTL-compatible 5V ±10% operation - deployed in real-time inter-processor communication and video frame buffering systems.
For engineers reviewing the 7025L20PF8 datasheet, 7025L20PF8 pinout, 7025L20PF8 application, or 7025L20PF8 equivalent, this page delivers verified timing parameters, validated dual-port arbitration behavior, confirmed PLCC-84 package mapping, and precise battery-retention capability (2V, 100–4000 µA) for embedded system memory coherency design.
Technical Context
The 7025L20PF8 implements fully asynchronous dual-port access with on-chip port arbitration logic and hardware semaphore signaling across eight flags addressed via A0–A2. It supports MASTER/SLAVE cascading for 32-bit+ bus expansion using M/S pin control, where BUSY is output on MASTER and input on SLAVE.
Its architecture enables simultaneous reads of the same memory location without contention, while BUSY flag assertion (tBAA ≤ 20 ns) and semaphore update pulse (tSOP = 10 ns) ensure deterministic inter-port synchronization. Data retention at 2V is guaranteed for the L-version only, with full CMOS-level standby modes (ISB3 ≤ 0.2 mA typ).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 16-bit (128 Kbit), true dual-port SRAM with independent address/data/control per port |
| Access Time (tRC) | 20 ns max - defines minimum read cycle interval for sustained throughput in real-time systems |
| Standby Current (ISB3) | 0.2 mA typ at VCC ≥ 4.8V - enables low-power battery backup mode with 2V data retention |
| Supply Voltage | 5.0 V ±10% - TTL-compatible single supply; no separate I/O or core voltage rails required |
| Operating Temperature | –40°C to +85°C (Industrial grade) - qualified for extended-temperature embedded control applications |
| Package | 84-pin PLCC (Plastic Leaded Chip Carrier) - surface-mount compatible with standard reflow profiles |
| Bus Width Support | Separate UBL/LBL and SEM logic - allows byte-selective writes and semaphore flag management without external glue logic |
Pinout & Package
7025L20PF8 is housed in an 84-pin Plastic Leaded Chip Carrier (PLCC) package with 0.050" lead pitch, 1.12" × 1.12" body size, and JEDEC-standard pinout. All VCC pins require local decoupling; all GND pins must be connected to ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low enable per port; controls port activation and power-down entry (ISB1–ISB4 states) |
| R/WL / R/WR | Read/Write Control (Left / Right) | Determines direction of data transfer; asserts write when low, read when high + OE asserted |
| OEL / OER | Output Enable (Left / Right) | Tri-states I/O drivers during writes or deselected states; critical for bus sharing |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select | Enables byte-granular writes (I/O8–I/O15 or I/O0–I/O7); essential for multiplexed bus compatibility |
| SEML / SEMR | Semaphore Enable | Activates 8-flag semaphore register accessed via A0–A2; used for inter-processor resource locking |
| BUSYL / BUSYR | Busy Flag (Master Output / Slave Input) | Indicates port contention; MASTER outputs BUSY, SLAVE uses it as input to stall writes |
| M/S | Master/Slave Select | Configures device role in cascaded systems: HIGH = MASTER (BUSY output), LOW = SLAVE (BUSY input) |
| INTL / INTR | Interrupt Flag | Open-drain push-pull output signals semaphore or memory event; requires external pull-up |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables concurrent read/write access from independent buses without arbitration overhead or wait states |
| Hardware Semaphore Logic | Eight dedicated flags with atomic read/write via A0–A2 - eliminates software mutex latency in multi-CPU systems |
| MASTER/SLAVE Cascading | Supports 32-bit+ word width expansion using M/S pin and BUSY handshaking - no external logic needed |
| 2V Data Retention | Preserves memory contents during main power loss using backup battery; validated for industrial temperature range |
| Full Asynchronous Operation | No clock required; timing governed solely by CE, R/W, OE, and address setup/hold - simplifies timing closure |
Applications
| Real-Time Inter-Processor Communication | Video Frame Buffering |
|---|---|
|
Use Scenario: Two microcontrollers exchange status and command data via shared memory without polling or interrupts. IC Role / Device Role / Timing Role: Dual-port SRAM acts as coherent memory bridge with BUSY-driven arbitration preventing simultaneous writes to same address. Use Value: Eliminates software handshake latency; tBDD ≤ 30 ns ensures valid read data within one cycle after BUSY deassertion. |
Use Scenario: Digital video encoder writes captured frames while decoder reads prior frames for display. IC Role / Device Role / Timing Role: Left port handles write stream from image sensor; right port feeds parallel pixel bus to display controller. Use Value: 20 ns tRC enables >40 MB/s sustained bandwidth per port - sufficient for 720p@60fps YUV422 streaming. |
| Industrial PLC Memory Coherence | Avionics Sensor Fusion Buffer |
|
Use Scenario: Programmable logic controller maintains synchronized I/O state tables between CPU and FPGA-based motion engine. IC Role / Device Role / Timing Role: Acts as lock-protected shared memory with semaphore flags managing access to critical control registers. Use Value: Hardware semaphores (tSOP = 10 ns) reduce interlock overhead vs. software spinlocks - improves deterministic response <10 µs. |
Use Scenario: Flight computer aggregates inertial, GPS, and barometric sensor data into time-aligned buffers before Kalman filtering. IC Role / Device Role / Timing Role: Provides non-blocking dual-port access for concurrent timestamped data ingestion and algorithmic readout. Use Value: Industrial temp rating (–40°C to +85°C) and 2V retention support uncooled avionics bays with brownout resilience. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C136-20VC | 8K × 16, 20 ns, 3.3V core (5V-tolerant I/O), 100-pin TQFP - higher density but incompatible voltage domain | Requires level-shifting for 5V systems; lacks native 2V retention and industrial temp guarantee | Select only if migrating to 3.3V infrastructure and redesigning power delivery. |
| IDT70V25L20PF | Same pinout, 3.3V supply, 20 ns, LVDS-compatible - lower power but not 5V TTL-compatible | Cannot directly replace in legacy 5V designs; requires PCB-level voltage translation or redesign | Choose for new low-power designs where 3.3V operation and reduced ICC (120 mA typ) are prioritized. |
Compared with CY7C136-20VC and IDT70V25L20PF, the 7025L20PF8 uniquely retains full 5V TTL compatibility, industrial temperature qualification, and proven 2V battery backup - making it irreplaceable in fielded 5V embedded systems requiring drop-in longevity.
Availability
7025L20PF8 is available at Aetrix Electronics and suitable for real-time inter-processor communication, video frame buffering, and industrial PLC memory coherence requiring stable component supply across extended product lifecycles.
Supply support for 7025L20PF8 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, acquired by Renesas Electronics in 2019.
The IDT7025 family was engineered for deterministic dual-ported memory access in mission-critical embedded systems - emphasizing bus coherency, low-latency arbitration, and industrial-grade reliability without external logic.
FAQ
What is the operating voltage range for the 7025L20PF8?
The 7025L20PF8 operates from 4.5 V to 5.5 V (5.0 V ±10%) and is fully TTL-compatible. Its data retention mode functions down to 2.0 V, enabling battery backup operation - a feature confirmed in the datasheet's Table 10 and explicitly limited to the "L" version.
Does the 7025L20PF8 support true simultaneous read access to the same memory location?
Yes, the 7025L20PF8 features true dual-ported memory cells that allow concurrent reads from both ports to identical addresses without contention or delay - a core architectural specification stated in the "Features" section and validated by functional block diagram analysis.
What package type is used for the 7025L20PF8?
The 7025L20PF8 uses an 84-pin Plastic Leaded Chip Carrier (PLCC) package, designated "PF" in the part number suffix. Pin configuration diagrams (Drawing 02) and mechanical dimensions (1.12" × 1.12") are documented in the official datasheet.
How does the BUSY signal function in MASTER vs. SLAVE configuration?
When M/S = HIGH, the 7025L20PF8 operates as MASTER and drives BUSY as an output to indicate port contention. When M/S = LOW, it operates as SLAVE and accepts BUSY as an input to gate writes - behavior defined in Note 1 of the Functional Block Diagram and Truth Table II.
Is the 7025L20PF8 qualified for industrial temperature operation?
Yes, the 7025L20PF8 is rated for –40°C to +85°C operation, as confirmed in the "Recommended DC Operating Conditions" table (Table 5) and explicitly called out under "Industrial temperature range (–40°C to +85°C) is available for selected speeds."
7025L20PF8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 128Kbit
- Memory Organization:
- 8K x 16
- 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:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
7025L20PF8 FAQ
1.How can I place an order for 7025L20PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7025L20PF8 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 7025L20PF8 reliable?
The price and inventory of 7025L20PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7025L20PF8 is usually 5 days.
3.What payment methods are accepted for 7025L20PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7025L20PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7025L20PF8?
7025L20PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7025L20PF8 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 7025L20PF8?
For technical support, including 7025L20PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7025L20PF8 requirements.
6.How does Aetrix verify that 7025L20PF8 is sourced from the original manufacturer or authorized distributors?
All 7025L20PF8 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 7025L20PF8 meets industry standards.
7.What is the process for return or replacement of 7025L20PF8?
All 7025L20PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7025L20PF8, 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 7025L20PF8 part is unused and in its original packaging.
Return procedure for 7025L20PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7025L20PF8 Tags
-
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
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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