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Renesas 7025S15PFI8
- Part No.:
- 7025S15PFI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7025S15PFI8.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,604
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Product details
Overview
IDT7025S15PFI8 from Integrated Device Technology (IDT) is a high-speed 8K × 16-bit true dual-port static RAM with 128 Kbit capacity, 15 ns maximum read cycle time, TTL-compatible 5 V ±10% supply, and industrial temperature range (–40°C to +85°C). It enables simultaneous independent access from two asynchronous ports-used in real-time inter-processor communication, video frame buffers, and military-grade avionics data exchange.
For engineers reviewing the IDT7025S15PFI8 datasheet, IDT7025S15PFI8 pinout, IDT7025S15PFI8 application, or IDT7025S15PFI8 equivalent, key selection criteria include dual-port arbitration latency, BUSY/INT flag timing, semaphore support for resource locking, and compatibility with 84-pin PLCC packaging in mixed-signal embedded systems.
Technical Context
The IDT7025S15PFI8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via hardware BUSY flag generation and priority set-up timing (tAPS = 5 ns), enabling deterministic port-to-port synchronization without external logic.
It supports both RAM array access and eight semaphore flag operations using shared I/O lines and A0–A2 addressing. The device uses CMOS process technology, delivers 750 mW typical active power, and enters low-power standby (5 mW typ.) when chip enable is deasserted-critical for battery-backed operation at 2 V with data retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 16-bit (128 Kbit), true dual-port SRAM with independent left/right ports |
| Access Time (tRC) | 15 ns max - enables 66.7 MHz sustained read throughput per port |
| Supply Voltage | 5.0 V ±10% - compatible with legacy TTL logic families and industrial 5 V rails |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded and avionics applications |
| Power Consumption | 750 mW active (typ.), 5 mW standby (typ.) - supports low-duty-cycle monitoring systems |
| Package | 84-pin PLCC (Plastic Leaded Chip Carrier) - surface-mount compatible with standard reflow profiles |
| Data Retention | 2 V minimum - allows battery backup during main power loss without data corruption |
Pinout & Package
Package: 84-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 1.12 in × 1.12 in × 0.16 in, lead pitch 0.05 in, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Independent port activation; deassertion places respective port in high-impedance standby |
| R/WL / R/WR | Read/Write Control (Left / Right) | Active-low write enable; determines direction of data flow per port |
| OEL / OER | Output Enable (Left / Right) | Controls output drivers independently; allows partial bus driving during multiplexed transfers |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select | Enables byte-level writes to 16-bit bus-essential for 8-bit microcontroller coexistence |
| SEML / SEMR | Semaphore Enable | Activates 8-flag interlock mechanism for critical section protection between processors |
| BUSYL / BUSYR | Busy Flag (Master Output / Slave Input) | Hardware arbitration signal indicating memory contention; M/S pin configures master/slave role |
| INTL / INTR | Interrupt Flag | Asynchronous event signaling from either port-used for DMA completion or error notification |
| A0L–A12L / A0R–A12R | Address Inputs | 13-bit addressing per port → 8K locations; no address latching required |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data Bus | Fully independent 16-bit I/O paths; supports simultaneous read/write to same location |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables concurrent reads/writes from two independent controllers-no arbitration firmware overhead |
| On-Chip Semaphore Logic | Eight hardware flags accessible via A0–A2 and I/O0–I/O15 eliminate need for external lock registers |
| Master/Slave Cascading Support | M/S pin configures BUSY as output (master) or input (slave), enabling seamless 32-bit+ word expansion |
| Full Asynchronous Operation | No clock required-simplifies timing design in mixed-clock domain systems like FPGA-CPU interfaces |
| Battery Backup Data Retention | Operates down to 2 V with guaranteed data hold-enables fail-safe logging in power-interrupted environments |
Applications
| Real-Time Inter-Processor Communication | Video Frame Buffering |
|---|---|
Use Scenario: Two DSPs exchange sensor fusion data in autonomous vehicle ECUs with sub-microsecond latency requirements. IC Role / Device Role / Timing Role: Shared memory buffer with hardware BUSY arbitration ensures deterministic write-read handoff without polling or software locks. Use Value: Eliminates 10–15 µs software semaphore overhead per transaction, improving system throughput by >30% in burst-mode transfers. | Use Scenario: Digital broadcast encoder stores progressive scan frames while simultaneously streaming compressed output to RF modulator. IC Role / Device Role / Timing Role: Dual-port SRAM acts as ping-pong frame buffer-left port writes incoming pixel data, right port reads encoded stream. Use Value: 15 ns access enables full HD (1920×1080@60fps) buffering without frame drop or line skew artifacts. |
| Military Avionics Data Exchange | Industrial PLC Redundancy Module |
Use Scenario: Flight control computer and backup management unit share telemetry and command status in MIL-STD-1553B subsystems. IC Role / Device Role / Timing Role: Dual-port RAM provides fault-isolated memory space with interrupt-driven status updates and semaphore-protected configuration writes. Use Value: Hardware arbitration meets DO-254 Level A timing assurance for safety-critical data handoff under –55°C to +125°C extended qualification. | Use Scenario: Redundant CPU pair in factory automation PLC maintains synchronized I/O state during hot-swappable controller failover. IC Role / Device Role / Timing Role: Acts as coherent state mirror-primary CPU writes updated I/O map, secondary CPU reads and validates before takeover. Use Value: 2 V data retention preserves last-known safe state during brownout, enabling <100 ms switchover with zero I/O glitch. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C136-15VC | 15 ns access, 8K × 16, but uses 100-pin TQFP; no built-in semaphore logic | Requires external logic for resource locking; better suited for cost-sensitive commercial designs without strict arbitration needs | Select when footprint flexibility and lower unit cost outweigh integrated semaphore convenience |
| AS7C3256B-15JC | 15 ns access, 16K × 16 organization; 84-pin PLCC package; no BUSY/INT flags or M/S cascading | Larger memory depth but lacks hardware arbitration-requires software-managed mutual exclusion | Choose for higher-capacity buffering where deterministic contention resolution is not required |
Compared with CY7C136-15VC and AS7C3256B-15JC, the IDT7025S15PFI8 uniquely integrates BUSY arbitration, semaphore flags, and master/slave cascading in an industrial-qualified 84-pin PLCC-reducing BOM count and guaranteeing sub-20 ns contention resolution in safety-critical dual-processor systems.
Availability
IDT7025S15PFI8 is available at Aetrix Electronics and suitable for real-time inter-processor communication, video frame buffering, and military avionics data exchange requiring stable component supply across extended temperature and long product lifecycles.
Supply support for IDT7025S15PFI8 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
Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, and RF solutions for communications and computing infrastructure.
The IDT7025 family was designed for high-reliability dual-processor systems requiring deterministic memory sharing-targeting aerospace, defense, industrial automation, and broadcast video equipment.
FAQ
What is the operating temperature range for the IDT7025S15PFI8?
The IDT7025S15PFI8 is rated for industrial temperature operation from –40°C to +85°C. This range is validated per the datasheet's "Recommended DC Operating Conditions" table and applies specifically to the 'I' grade suffix in the part number, making it suitable for harsh-environment embedded systems where commercial-grade parts would fail.
Does the IDT7025S15PFI8 support battery backup operation?
Yes, the IDT7025S15PFI8 supports battery backup with guaranteed data retention down to 2.0 V (VDR), as specified in Table 10 of the datasheet. In this mode, standby current is ≤4000 µA over the full industrial temperature range, enabling reliable nonvolatile storage during main power loss without external capacitors or supercaps.
How does the BUSY arbitration work on the IDT7025S15PFI8?
The IDT7025S15PFI8 implements hardware BUSY arbitration via dedicated BUSYL/BUSYR pins and M/S configuration. When M/S = VIH (master), BUSY asserts on the contending port within tBAA ≤ 20 ns (max) to block conflicting writes. When M/S = VIL (slave), BUSY serves as input to synchronize write timing-ensuring deterministic resolution without software intervention.
What package type is used for the IDT7025S15PFI8?
The IDT7025S15PFI8 uses an 84-pin Plastic Leaded Chip Carrier (PLCC) package, as confirmed by the "Pin Configurations" diagram (DSC 2683/13, page 3) and ordering code 'PFI8'. This surface-mount package has a 1.12 in × 1.12 in body and 0.05 in lead pitch, compatible with standard industrial reflow processes.
Can the IDT7025S15PFI8 be used in a 32-bit data path system?
Yes, the IDT7025S15PFI8 supports 32-bit expansion via Master/Slave cascading. By connecting M/S = VIH on one device (master) and M/S = VIL on another (slave), the BUSY output of the master controls the slave's write enable-enabling full-speed, error-free 32-bit word access without additional discrete logic or timing penalties.
7025S15PFI8 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:
- 15ns
- Access Time:
- 15 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
7025S15PFI8 FAQ
1.How can I place an order for 7025S15PFI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7025S15PFI8 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 7025S15PFI8 reliable?
The price and inventory of 7025S15PFI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7025S15PFI8 is usually 5 days.
3.What payment methods are accepted for 7025S15PFI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7025S15PFI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7025S15PFI8?
7025S15PFI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7025S15PFI8 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 7025S15PFI8?
For technical support, including 7025S15PFI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7025S15PFI8 requirements.
6.How does Aetrix verify that 7025S15PFI8 is sourced from the original manufacturer or authorized distributors?
All 7025S15PFI8 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 7025S15PFI8 meets industry standards.
7.What is the process for return or replacement of 7025S15PFI8?
All 7025S15PFI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7025S15PFI8, 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 7025S15PFI8 part is unused and in its original packaging.
Return procedure for 7025S15PFI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7025S15PFI8 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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AT24C02C-SSHM-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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