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Renesas 7025S15PFI
- Part No.:
- 7025S15PFI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7025S15PFI.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,482
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Product details
Overview
7025S15PFI from IDT (Integrated Device Technology) is a high-speed, 8K × 16-bit true dual-port static RAM with independent left/right ports, 15 ns maximum read cycle time (commercial grade), TTL-compatible 5V ±10% operation, and on-chip semaphore arbitration logic. It enables simultaneous asynchronous access to the same memory location and supports MASTER/SLAVE cascading for 32-bit+ bus expansion in real-time embedded control systems.
For engineers reviewing the 7025S15PFI datasheet, 7025S15PFI pinout, 7025S15PFI application, or 7025S15PFI equivalent, key selection considerations include its 15 ns access timing, industrial temperature range (–40°C to +85°C), dual-port arbitration behavior, BUSY flag timing under M/S = VIH, and compatibility with 84-pin PLCC packaging.
Technical Context
The 7025S15PFI implements fully asynchronous dual-port architecture with separate address, data, and control buses per port (A0L–A12L/I/O0L–I/O15L and A0R–A12R/I/O0R–I/O15R), enabling concurrent read/write operations without external logic. Its on-chip arbitration resolves contention via BUSY flag assertion when address matches occur between ports.
It integrates full hardware semaphore signaling (8 flags, addressed by A0–A2), interrupt flag generation (INTL/INTR), and byte-selectable I/O (UBL/LBL, UBR/LBR) for multiplexed bus interfacing. Power management includes chip-enable–controlled active/standby modes, with typical active current of 170 mA and standby current of 20 mA (TTL-level inputs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 16-bit (128 Kbit), true dual-port SRAM with independent left/right access paths |
| Access Time (tRC) | 15 ns max - guarantees full-speed read cycle timing for commercial-grade operation at 5V |
| Operating Voltage | 5.0 V ±10% - TTL-compatible supply, no level-shifting required for legacy microcontroller interfaces |
| Temperature Range | –40°C to +85°C - qualified for industrial environments without derating |
| Package | 84-pin PLCC (Plastic Leaded Chip Carrier) - surface-mount compatible with standard reflow profiles |
| Arbitration Logic | On-chip BUSY flag and semaphore enable hardware-coordinated multi-processor memory sharing |
| Power Consumption | Active: 170 mA typ; Standby (TTL inputs): 20 mA typ - supports low-overhead power gating in always-on subsystems |
Pinout & Package
7025S15PFI is housed in an 84-pin Plastic Leaded Chip Carrier (PLCC) package with J-lead configuration, body size ≈ 1.12 in × 1.12 in × 0.16 in, and lead pitch of 0.05 in. All VCC and GND pins require proper decoupling per layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Asynchronous port activation; deassertion places respective port in high-impedance or standby state |
| R/WL / R/WR | Read/Write Control (Left / Right) | Active-low signal determining direction of data transfer on corresponding port |
| OEL / OER | Output Enable (Left / Right) | Controls tri-state output drivers; independent of R/W, enabling read-data gating |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select | Enables 8-bit granularity writes to upper (I/O8–I/O15) or lower (I/O0–I/O7) byte lanes |
| SEML / SEMR | Semaphore Enable | Activates semaphore register access mode (A0–A2 address semaphore flags; I/O0 writes, I/O0–I/O15 reads) |
| BUSYL / BUSYR | Busy Flag (Master Output / Slave Input) | When M/S = H, BUSYR asserts to block conflicting writes on slave port during address contention |
| INTL / INTR | Interrupt Flag | Open-drain push-pull output signaling inter-port event (e.g., semaphore acquisition or write completion) |
| A0L–A12L / A0R–A12R | Address Inputs | 13-bit address bus per port; supports full 8K address space (0x0000–0x1FFF) independently |
| I/O0L–I/O15L / I/O0R–I/O15R | Data I/O Bidirectional Bus | 16-bit parallel data path per port; electrically isolated-no internal bus contention |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous, independent read/write access from two processors or DMA engines without arbitration overhead |
| Hardware Semaphore Support | Eight dedicated flags accessible via A0–A2, eliminating need for software locks or external mutex circuitry |
| MASTER/SLAVE Cascading | Single M/S pin configures device as master (BUSY output) or slave (BUSY input), enabling seamless 32-bit+ data bus expansion |
| Full Asynchronous Operation | No clock required-timing governed solely by CE/R/W/OE setup/hold windows, simplifying integration with diverse controllers |
| Industrial Temperature Rating | Validated operation from –40°C to +85°C ensures reliability in motor drives, PLCs, and telecom line cards |
Applications
| Real-Time Motor Control | Digital Signal Processing Subsystem |
|---|---|
Use Scenario: Two DSP cores share sensor feedback and control command buffers in a servo drive, requiring deterministic latency and conflict-free memory updates. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared instruction/data buffer with hardware arbitration preventing race conditions during simultaneous access. Use Value: 15 ns tRC and sub-20 ns BUSY assertion ensure <25 ns worst-case inter-core synchronization delay. | Use Scenario: A host processor offloads FFT computation to a dedicated DSP, exchanging coefficient tables and result vectors via shared memory. IC Role / Device Role / Timing Role: 7025S15PFI serves as zero-wait-state memory bridge, with left port connected to host and right port to DSP. Use Value: Independent byte enables (UBL/LBL, UBR/LBR) allow efficient 8-bit parameter transfers without full 16-bit bus cycles. |
| Redundant Communication Controller | Avionics Data Acquisition Unit |
Use Scenario: Primary and backup flight management units maintain synchronized state via mirrored memory, with automatic failover triggered by BUSY-interrupt handshake. IC Role / Device Role / Timing Role: Acts as fault-tolerant shared memory with interrupt-driven status exchange and semaphore-protected critical sections. Use Value: On-chip INTL/INTR and SEM logic eliminate external interrupt controllers and reduce BOM count by two ICs. | Use Scenario: Analog-to-digital converters stream telemetry to a safety-critical processor while a monitoring core validates checksums and logs anomalies. IC Role / Device Role / Timing Role: Provides non-blocking memory access for concurrent ADC buffering and diagnostic analysis. Use Value: Industrial temperature rating and 5V tolerance ensure stable operation in unregulated aircraft power environments. |
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 | 16K × 8 organization; 15 ns access; 3.3V core (5V-tolerant I/O); 84-pin PLCC | Higher density but narrower data bus; requires external byte-width adaptation for 16-bit systems | Select if migrating to lower-voltage design or needing >128 Kbit capacity with 8-bit interface constraints |
| IDT70V25S15PF | Same 8K × 16 structure, 15 ns speed, but 3.3V supply (not 5V); 100-pin TQFP | Lower power (≈400 mW active), but incompatible voltage domain and footprint | Choose only when redesigning for 3.3V infrastructure and board space allows 100-pin TQFP placement |
Compared with CY7C136-15VC and IDT70V25S15PF, the 7025S15PFI uniquely delivers 5V TTL compatibility, industrial temperature support, and 84-pin PLCC packaging in a 128 Kbit dual-port configuration-making it irreplaceable in legacy 5V real-time control systems where voltage, timing, and form factor are fixed.
Availability
7025S15PFI is available at Aetrix Electronics and suitable for real-time motor control, digital signal processing subsystems, and redundant communication controllers requiring stable component supply across extended product lifecycles.
Supply support for 7025S15PFI 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, RF, and high-performance silicon solutions, now part of Renesas Electronics.
The IDT7025 family was engineered for deterministic, low-latency shared memory in multi-processor embedded systems-targeting industrial automation, aerospace, and telecom infrastructure where hardware arbitration and 5V robustness are mandatory.
FAQ
What is the maximum operating temperature range for the 7025S15PFI?
The 7025S15PFI is rated for industrial temperature operation from –40°C to +85°C. This specification is validated across all electrical parameters including access time (tRC ≤ 15 ns), standby current (ISB1 ≤ 20 mA), and BUSY timing (tBAA ≤ 20 ns), ensuring reliable performance in harsh environments such as factory-floor controllers and outdoor base stations.
Does the 7025S15PFI support battery backup for data retention?
No-the 7025S15PFI is the standard-power "S" variant and does not support battery backup. Only the "L" variant (e.g., 7025L15PFI) provides 2V data retention capability with typical standby current of 5 µA. The 7025S15PFI requires continuous 5V supply for data integrity; loss of VCC results in immediate memory loss.
How does the BUSY arbitration mechanism work on the 7025S15PFI?
When M/S = H (master mode), the 7025S15PFI asserts BUSYR upon detecting address match between ports, blocking R/WR on the slave port until the master completes its cycle. Timing parameters tBAA (≤20 ns) and tBDD (≤30 ns) define response and data-valid windows. In slave mode (M/S = L), BUSYR becomes an input that must be driven externally to gate writes.
Can the 7025S15PFI be used in a 32-bit data bus configuration?
Yes-the 7025S15PFI supports 32-bit expansion via MASTER/SLAVE cascading. One device operates as master (M/S = H) driving BUSYR to a second device configured as slave (M/S = L). This eliminates external glue logic and maintains full 15 ns access speed across the combined 32-bit width, as confirmed in the functional description and timing waveforms.
What package type is used for the 7025S15PFI?
The 7025S15PFI uses an 84-pin Plastic Leaded Chip Carrier (PLCC) package, identified by suffix "PFI". Pin layout matches the standard IDT7025 PLCC footprint (drawing 2683 drw 02), with VCC on pins 13, 33, 55, 72, and 84; GND on pins 12, 25, 46, 69, and 71; and bidirectional I/O distributed across both sides of the square body.
7025S15PFI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tray
- 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)
7025S15PFI FAQ
1.How can I place an order for 7025S15PFI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7025S15PFI 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 7025S15PFI reliable?
The price and inventory of 7025S15PFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7025S15PFI is usually 5 days.
3.What payment methods are accepted for 7025S15PFI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7025S15PFI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7025S15PFI?
7025S15PFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7025S15PFI 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 7025S15PFI?
For technical support, including 7025S15PFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7025S15PFI requirements.
6.How does Aetrix verify that 7025S15PFI is sourced from the original manufacturer or authorized distributors?
All 7025S15PFI 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 7025S15PFI meets industry standards.
7.What is the process for return or replacement of 7025S15PFI?
All 7025S15PFI units undergo pre-shipment inspection (PSI). If there is an issue with 7025S15PFI, 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 7025S15PFI part is unused and in its original packaging.
Return procedure for 7025S15PFI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7025S15PFI Tags
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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
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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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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