My Inquiry
My Account
Renesas 7025S35PF8
- Part No.:
- 7025S35PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7025S35PF8.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,353
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
IDT7025S35PF8 from Integrated Device Technology (IDT) is a high-speed 8K × 16 (128 Kbit) true dual-port static RAM with independent left/right ports, 35 ns maximum read cycle time, TTL-compatible 5V ±10% operation, and industrial temperature range (–40°C to +85°C). 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 IDT7025S35PF8 datasheet, IDT7025S35PF8 pinout, IDT7025S35PF8 application, or IDT7025S35PF8 equivalent, key selection considerations include dual-port arbitration timing (tBDD ≤ 30 ns), BUSY flag behavior under M/S = VIH, semaphore flag support (8 flags via A0–A2), battery backup data retention at 2V (L-version only), and compatibility with 84-pin PLCC packaging.
Technical Context
The IDT7025S35PF8 implements fully asynchronous dual-port architecture with on-chip port arbitration logic and hardware semaphore signaling across both ports. Its internal arbitration resolves contention via BUSY flag assertion when address matches occur, with priority determined by tAPS (5 ns setup) and tBDD (≤30 ns disable-to-valid-data delay).
It supports two distinct operational modes: RAM access (CE = VIL, UB/LB = VIL, SEM = VIH) and semaphore register access (CE = VIH or UB&LB = VIH, SEM = VIL), each governed by separate AC timing tables. The device uses CMOS process technology and features separate upper-byte (UB/UBR) and lower-byte (LB/LBR) controls for multiplexed bus interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 16 bits (128 Kbit); supports independent concurrent reads/writes on left and right ports |
| Access Time (tRC) | 35 ns max - defines minimum cycle time for reliable read operations at full speed |
| Operating Voltage | 5.0 V ±10% - TTL-compatible supply; no level-shifting required in 5V systems |
| Temperature Range | –40°C to +85°C - qualified for industrial environments without derating |
| Power Consumption | Active: 150 mA typ (both ports active); Standby (ISB1): 13 mA typ - enables low-idle-power system design |
| Package | 84-pin PLCC (Plastic Leaded Chip Carrier) - surface-mountable, rework-friendly, JEDEC-standard footprint |
| Bus Compatibility | Separate UBL/LBL and UBR/LBR controls - allows byte-level write masking for mixed-width data transfers |
Pinout & Package
Package: 84-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 1.12 in × 1.12 in × 0.16 in, lead finish SnPb, RoHS-compliant green variant available per ordering info.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A12L / A0R–A12R | Address Inputs (Left/Right) | 13-bit address buses for independent 8K-word addressing per port |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data Bus (Left/Right) | 16-bit parallel data paths; tri-stated when OE inactive or CE high |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables port-specific memory access; controls power-down mode when high |
| OEL / OER | Output Enable (Left/Right) | Active-low enables data output drivers; used with CE and byte enables for read gating |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low initiates write; high enables read - determines I/O direction per port |
| UBL / UBR / LBL / LBR | Upper/Lower Byte Select (Left/Right) | Independent byte masking for 8-bit sub-word writes without affecting adjacent bytes |
| SEML / SEMR | Semaphore Enable (Left/Right) | Active-low enables access to 8 shared semaphore flags (addressed by A0–A2) |
| INTL / INTR | Interrupt Flag Output (Left/Right) | Open-drain, non-tri-stated push-pull flag indicating semaphore or error events |
| BUSYL / BUSYR | Busy Flag (Left/Right) | When M/S = H: BUSY is output (Master); when M/S = L: BUSY is input (Slave) |
| M/S | Master/Slave Select | Configures arbitration role: high = Master (drives BUSY), low = Slave (samples BUSY) |
| VCC / GND | Power / Ground | Multiple VCC/GND pins distributed for noise reduction and low-impedance supply routing |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous, independent read/write access to identical memory locations - critical for inter-processor communication buffers |
| Hardware Semaphore Logic | On-chip 8-flag semaphore register (A0–A2 addressed) eliminates need for external locking logic in multi-CPU systems |
| Master/Slave Cascading | Supports 32-bit+ data bus expansion using M/S pin and BUSY handshaking - avoids discrete glue logic in wide-memory designs |
| Full Asynchronous Operation | No clock required; timing defined solely by setup/hold and access parameters - simplifies integration into async control planes |
| Industrial Temperature Rating | Qualified from –40°C to +85°C with guaranteed 35 ns tRC - suitable for factory automation and transportation electronics |
Applications
| Real-Time Motion Control | Digital Signal Processor Interface |
|---|---|
Use Scenario: Coordinating servo motor position updates between FPGA motion planner and microcontroller-based safety monitor. IC Role / Device Role / Timing Role: Dual-port RAM acts as synchronized data exchange buffer; left port writes position commands from FPGA, right port reads by MCU with BUSY arbitration preventing race conditions. Use Value: Enables deterministic 35 ns read latency and atomic semaphore-controlled handshaking - eliminates software polling delays and ensures jitter-free command delivery. | Use Scenario: Sharing filtered audio samples between DSP core and ARM host processor in a voice analytics edge node. IC Role / Device Role / Timing Role: IDT7025S35PF8 serves as zero-wait-state shared memory; DSP writes processed frames to upper byte, ARM reads metadata from lower byte using independent address decoders. Use Value: Achieves concurrent 16-bit data transfer without pipeline stalls - sustains 28.6 MB/s aggregate bandwidth (1/35 ns × 16 bits) for real-time streaming. |
| Avionics Display Buffer | Industrial PLC Memory Expansion |
Use Scenario: Storing rendered graphics tiles in a DO-254-certified cockpit display unit where redundancy requires lockstep CPU pairs. IC Role / Device Role / Timing Role: Acts as mirrored frame buffer; both CPUs access same addresses simultaneously via true dual-port cells, with BUSY flag asserting only during conflicting writes. Use Value: Guarantees identical pixel data visibility across redundant channels - satisfies fault-masking requirements without external synchronization circuitry. | Use Scenario: Extending local I/O mapping space in a modular PLC backplane where main CPU and I/O controller require shared configuration registers. IC Role / Device Role / Timing Role: Provides 128 Kbit of shared configuration memory; left port updated by CPU during initialization, right port read by I/O controller at boot for module identification. Use Value: Eliminates EEPROM wear-out and SPI bottlenecks - enables sub-microsecond register access for hot-swap detection and module enumeration. |
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-35AXC | 35 ns access, 8K × 16, 3.3V core (5V-tolerant I/O), 100-pin TQFP | Requires level translation in legacy 5V systems; lower active power but incompatible voltage domain | Select when migrating to 3.3V infrastructure or needing finer package pitch; not drop-in for 5V-only boards |
| AS7C3256B-35JCIN | 35 ns access, 16K × 16, 3.3V only, 44-pin SOJ | Double density but single-port; lacks BUSY arbitration, semaphore, and M/S cascading logic | Choose for cost-sensitive, non-concurrent applications where software-managed locking suffices |
Compared with CY7C028V-35AXC and AS7C3256B-35JCIN, the IDT7025S35PF8 uniquely delivers hardware-enforced concurrency control, 5V-native operation, and master/slave topology - making it irreplaceable in deterministic real-time inter-processor communication where timing predictability is mandatory.
Availability
IDT7025S35PF8 is available at Aetrix Electronics and suitable for real-time motion control, avionics display buffering, and industrial PLC memory expansion requiring stable component supply across extended product lifecycles.
Supply support for IDT7025S35PF8 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, RF, and sensor signal conditioning ICs for communications, computing, and industrial markets.
The IDT7025S35PF8 belongs to IDT's high-speed dual-port SRAM product line, designed specifically for deterministic inter-processor communication in real-time embedded systems where concurrent access, hardware arbitration, and industrial reliability are mandatory.
FAQ
What is the maximum operating temperature range certified for the IDT7025S35PF8?
The IDT7025S35PF8 is rated for industrial temperature operation from –40°C to +85°C, with all AC and DC specifications guaranteed across this full range. This qualification enables deployment in factory automation controllers, transportation electronics, and outdoor industrial gateways without thermal derating.
Does the IDT7025S35PF8 support battery backup data retention?
No - the IDT7025S35PF8 ('S' suffix) is the standard-power version and does not support battery backup. Only the 'L' suffix variants (e.g., IDT7025L35PF8) provide 2V data retention capability with typical standby current of 100 µA. The IDT7025S35PF8 requires continuous 5V supply for data retention.
How does the M/S pin affect BUSY signal behavior on the IDT7025S35PF8?
When M/S = H, the IDT7025S35PF8 operates as Master: BUSYL/BUSYR become outputs that assert during address contention. When M/S = L, it operates as Slave: BUSYL/BUSYR become inputs sampled by the device to inhibit writes during conflict. This pin configures the arbitration topology for cascaded multi-chip systems.
Can the IDT7025S35PF8 be used in a single-port configuration?
Yes - the IDT7025S35PF8 can operate with only one port enabled (e.g., CEL = VIL, CER = VIH) while the other remains in high-impedance standby. In this mode, ISB2 standby current drops to 85 mA typ, and all dual-port features (BUSY, semaphore, arbitration) remain functional but unused, preserving design flexibility for future upgrades.
What package type is used for the IDT7025S35PF8, and is it RoHS-compliant?
The IDT7025S35PF8 uses an 84-pin Plastic Leaded Chip Carrier (PLCC) package. Per IDT documentation, green (RoHS-compliant) variants are available - the 'F8' suffix indicates lead-free finish and compliance with JEDEC J-STD-609A Class 2 marking standards.
7025S35PF8 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:
- 35ns
- Access Time:
- 35 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)
7025S35PF8 FAQ
1.How can I place an order for 7025S35PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7025S35PF8 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 7025S35PF8 reliable?
The price and inventory of 7025S35PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7025S35PF8 is usually 5 days.
3.What payment methods are accepted for 7025S35PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7025S35PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7025S35PF8?
7025S35PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7025S35PF8 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 7025S35PF8?
For technical support, including 7025S35PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7025S35PF8 requirements.
6.How does Aetrix verify that 7025S35PF8 is sourced from the original manufacturer or authorized distributors?
All 7025S35PF8 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 7025S35PF8 meets industry standards.
7.What is the process for return or replacement of 7025S35PF8?
All 7025S35PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7025S35PF8, 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 7025S35PF8 part is unused and in its original packaging.
Return procedure for 7025S35PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7025S35PF8 Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
