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Renesas 7025S20PFI
- Part No.:
- 7025S20PFI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7025S20PFI.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,281
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Product details
Overview
IDT7025S20PFI from Integrated Device Technology (IDT) is a high-speed 8K × 16 true dual-port static RAM with independent asynchronous left/right ports, 20 ns maximum read cycle time (tRC), industrial temperature range (–40°C to +85°C), and TTL-compatible 5V ±10% supply - used in real-time embedded systems requiring concurrent memory access for host/DSP co-processing or video frame buffering.
For engineers reviewing the IDT7025S20PFI datasheet, IDT7025S20PFI pinout, IDT7025S20PFI application, or IDT7025S20PFI equivalent, key selection criteria include dual-port arbitration latency, BUSY flag timing under address contention, semaphore flag support, battery-backed data retention at 2V, and compatibility with 84-pin PLCC packaging for legacy industrial control designs.
Technical Context
The IDT7025S20PFI implements full hardware port arbitration with on-chip BUSY flag generation (M/S = H for master output), interrupt flag (INTL/INTR), and eight semaphore registers accessible via A0–A2 and I/O0–I/O15. It supports simultaneous reads of the same location without conflict.
Its dual-port architecture enables fully asynchronous operation: either port may initiate read/write independently, with automatic power-down via Chip Enable (CE) and separate upper-byte (UB/UBR) and lower-byte (LB/LBR) controls for multiplexed bus interfacing - critical for 16-bit data path expansion in motor control or telecom line cards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 16 bits (128 Kbit total); supports independent 16-bit word access per port |
| Max Read Cycle Time (tRC) | 20 ns - guarantees ≤20 ns latency for consecutive reads in industrial temp range |
| Operating Voltage | 5.0 V ±10% - compatible with legacy TTL logic families without level-shifting |
| Temperature Range | –40°C to +85°C - qualified for industrial-grade reliability in harsh environments |
| Active Power (Typ.) | 160 mA (750 mW) - enables thermal management in dense PCB layouts |
| Standby Current (ISB1) | 20 mA (both ports disabled) - reduces idle power in always-on systems |
| Data Retention | 2 V minimum - maintains contents during brown-out or backup-battery operation |
Pinout & Package
Package: 84-pin Plastic Leaded Chip Carrier (PLCC), 29.4 mm × 29.4 mm body, 1.7 mm height, JEDEC MS-026 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A12L / A0R–A12R | Address Inputs (Left/Right) | 13-bit address per port; enables full 8K-word addressing independently |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data Bus (Left/Right) | 16-bit parallel data path per port; supports byte-selectable writes via UBL/LBL and UBR/LBR |
| CEL / CER | Chip Enable (Left/Right) | Asynchronous enable per port; deassertion places port in low-power standby |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low write strobe; determines direction of data flow on I/O pins |
| OEL / OER | Output Enable (Left/Right) | Controls tri-state of I/O drivers during reads; allows bus sharing |
| SEML / SEMR | Semaphore Enable (Left/Right) | Activates 8-flag semaphore register bank for inter-port synchronization |
| INTL / INTR | Interrupt Flag Output (Left/Right) | Open-drain active-low signal indicating pending semaphore or error event |
| BUSYL / BUSYR | Busy Flag (Master Output / Slave Input) | When M/S = H, BUSYR asserts to block conflicting writes; resolves arbitration without external logic |
| M/S | Master/Slave Select | Configures device as master (BUSY output) or slave (BUSY input) in cascaded 32-bit+ memory systems |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select | Enables byte-level granularity for 8-bit peripheral interfacing or mixed-width data transfers |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous read/write from independent buses - eliminates software polling or external arbitration logic |
| On-Chip Semaphore Logic | Eight hardware flags accessible via A0–A2 address lines - provides deterministic inter-processor signaling without CPU overhead |
| Master/Slave Cascading | Supports 32-bit+ data bus expansion using M/S pin and BUSY handshake - avoids glue logic in wide-memory systems |
| 2V Data Retention | Maintains stored data during main power loss - enables seamless recovery after brown-out or battery switchover |
| Industrial Temperature Rating | Validated operation from –40°C to +85°C - suitable for factory automation, avionics, and outdoor infrastructure |
Applications
| Motor Control System | Digital Signal Processor Interface |
|---|---|
Use Scenario: Real-time servo loop execution where FPGA handles PWM generation while DSP performs trajectory calculation. IC Role / Device Role / Timing Role: Dual-port SRAM buffers shared motion parameters and status flags between FPGA and DSP with zero-cycle arbitration delay. Use Value: Eliminates bus contention stalls; 20 ns tRC ensures sub-50 ns parameter exchange enabling 20 kHz control loop rates. | Use Scenario: Audio codec interfacing where DSP writes processed samples to memory while audio controller reads for DAC output. IC Role / Device Role / Timing Role: Acts as ping-pong buffer with left port connected to DSP and right port to audio controller, synchronized via semaphore flags. Use Value: Prevents sample dropouts by guaranteeing atomic flag updates and deterministic BUSY assertion during address collisions. |
| Telecom Line Card | Industrial PLC Memory Expansion |
Use Scenario: TDM frame buffering in multi-channel E1/T1 interface where line processor and host CPU access shared configuration tables. IC Role / Device Role / Timing Role: Provides non-blocking access to channel-specific registers and statistics counters using independent address/data paths. Use Value: Enables concurrent firmware updates and real-time monitoring without interrupting live traffic processing. | Use Scenario: Legacy PLC backplane upgrade requiring additional program memory while preserving existing 5V TTL bus architecture. IC Role / Device Role / Timing Role: Serves as drop-in 128 Kbit memory extension with identical voltage, timing, and pinout compatibility to prior-generation controllers. Use Value: Avoids board redesign; 84-pin PLCC footprint matches legacy sockets, and 20 ns speed meets scan-time requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C136-20JC | 5V, 8K × 16, 20 ns tRC, 84-pin PLCC - but lacks integrated semaphore logic and BUSY arbitration | Requires external logic for inter-port synchronization; not suitable for tightly coupled processor pairs | Select when only basic dual-port access is needed and arbitration is handled in software or FPGA |
| AS7C38098A-20TIN | 3.3V core, 8K × 16, 20 ns tRC, 100-pin TQFP - no 5V tolerance or industrial temp grade | Incompatible with 5V TTL systems; requires level translation and has narrower operating range (0°C to +70°C) | Choose only for new 3.3V designs with space-constrained layouts favoring TQFP over PLCC |
Compared with CY7C136-20JC and AS7C38098A-20TIN, the IDT7025S20PFI uniquely delivers hardware semaphore support, master/slave cascading, and industrial temperature rating in a 5V/PLCC package - making it irreplaceable for legacy-reliant, safety-critical dual-processor systems.
Availability
IDT7025S20PFI is available at Aetrix Electronics and suitable for motor control systems, telecom line cards, industrial PLCs, and digital signal processor interfaces requiring stable component supply across extended product lifecycles.
Supply support for IDT7025S20PFI 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions before its acquisition by Renesas Electronics in 2019.
The IDT7025S20PFI belongs to IDT's high-speed dual-port SRAM product line, designed specifically for real-time embedded systems demanding deterministic, contention-free memory access between heterogeneous processors or peripherals.
FAQ
What is the maximum operating temperature range for the IDT7025S20PFI?
The IDT7025S20PFI is rated for industrial temperature operation from –40°C to +85°C. This specification is validated per the datasheet's "Recommended DC Operating Conditions" table and applies across all AC timing parameters including 20 ns read cycle time. The device uses CMOS process technology optimized for thermal stability in uncontrolled environments such as factory floors or outdoor base stations.
Does the IDT7025S20PFI support battery backup operation?
Yes, the IDT7025S20PFI supports battery backup operation with guaranteed data retention at VCC = 2.0 V minimum. Per the "Data Retention Characteristics" section, it maintains stored contents with ICCDR ≤ 4000 µA (military/industrial grade) under this condition. This feature enables seamless operation during main power failure in applications like programmable logic controllers and medical diagnostic equipment.
How does the BUSY flag function in master versus slave configuration on the IDT7025S20PFI?
When M/S = H, the IDT7025S20PFI operates as master: BUSYR is an output that asserts low to block conflicting writes on the right port during address contention. When M/S = L, it operates as slave: BUSYR becomes an input, allowing external arbitration from a master device. This dual-mode behavior is defined in the functional block diagram and truth tables, enabling flexible system-level topology design.
Can the IDT7025S20PFI be used in a 32-bit memory system?
Yes, the IDT7025S20PFI supports 32-bit expansion via Master/Slave cascading. Two devices can be configured - one as master (M/S = H), one as slave (M/S = L) - using BUSY handshake to coordinate access. The datasheet confirms this capability enables "full-speed, error-free operation without additional discrete logic," making it ideal for wide-data-path applications like radar signal processing or high-throughput test equipment.
What package type is used for the IDT7025S20PFI?
The IDT7025S20PFI uses an 84-pin Plastic Leaded Chip Carrier (PLCC) package, identified as "PFI" in the part number suffix. This package measures 29.4 mm × 29.4 mm with a 1.7 mm profile and complies with JEDEC standard MS-026. Pin configuration matches the top-view diagram in the datasheet, including dedicated VCC/GND pins distributed for noise reduction and thermal dissipation.
7025S20PFI 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:
- 20ns
- Access Time:
- 20 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)
7025S20PFI FAQ
1.How can I place an order for 7025S20PFI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7025S20PFI 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 7025S20PFI reliable?
The price and inventory of 7025S20PFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7025S20PFI is usually 5 days.
3.What payment methods are accepted for 7025S20PFI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7025S20PFI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7025S20PFI?
7025S20PFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7025S20PFI 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 7025S20PFI?
For technical support, including 7025S20PFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7025S20PFI requirements.
6.How does Aetrix verify that 7025S20PFI is sourced from the original manufacturer or authorized distributors?
All 7025S20PFI 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 7025S20PFI meets industry standards.
7.What is the process for return or replacement of 7025S20PFI?
All 7025S20PFI units undergo pre-shipment inspection (PSI). If there is an issue with 7025S20PFI, 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 7025S20PFI part is unused and in its original packaging.
Return procedure for 7025S20PFI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7025S20PFI 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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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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