My Inquiry
My Account
Renesas 7025L55PF8
- Part No.:
- 7025L55PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7025L55PF8.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,296
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7025L55PF8 from IDT (Integrated Device Technology) is a high-speed 8K × 16-bit true dual-port static RAM with 55 ns maximum read/write cycle time, TTL-compatible 5V ±10% operation, and industrial temperature range (–40°C to +85°C). It supports simultaneous independent access from left and right ports, on-chip semaphore arbitration, and battery backup data retention at 2V - used in real-time embedded systems requiring deterministic memory coherency between two processors or DMA engines.
For engineers reviewing the 7025L55PF8 datasheet, 7025L55PF8 pinout, 7025L55PF8 application, or 7025L55PF8 equivalent, this page delivers verified electrical specs, validated 84-pin PLCC package mapping, confirmed dual-port arbitration behavior, and real-world use cases in telecom line cards, avionics I/O controllers, and industrial motion control PLCs.
Technical Context
The 7025L55PF8 implements fully asynchronous dual-port architecture with separate address, data, and control buses per port (left/right), enabling concurrent reads/writes to any memory location without external logic. Its on-chip arbitration logic resolves contention via BUSY flag assertion and supports master/slave cascading for 32-bit+ word expansion using M/S pin configuration.
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 compatibility. Power management includes four standby modes (ISB1–ISB4), with ISB3 achieving 0.2 mA typical current under CMOS-level inputs at 5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 16-bit (128 Kbit), true dual-port SRAM with independent left/right address/data/control paths |
| Access Time (tRC) | 55 ns max - guarantees full-speed operation in 18 MHz synchronous bus interfaces |
| Supply Voltage | 5.0 V ±10% - compatible with legacy TTL and 5V microcontroller systems without level shifting |
| Data Retention | 2 V minimum - enables battery-backed operation during main power loss in critical control applications |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation and outdoor base stations |
| Standby Current (ISB3) | 0.2 mA typical - ultra-low power state when both ports are disabled with CMOS-level inputs |
| Package | 84-pin PLCC (Plastic Leaded Chip Carrier) - surface-mountable, RoHS-compliant, 28.57 mm × 28.57 mm footprint |
Pinout & Package
7025L55PF8 is housed in an 84-pin Plastic Leaded Chip Carrier (PLCC) package with J-lead geometry, 1.27 mm pitch, and body size 28.57 mm × 28.57 mm × 4.32 mm. Pin 1 is located at the index corner adjacent to the notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A12L | Left Port Address Inputs | 13-bit address bus for left port; selects one of 8K locations independently of right port |
| A0R–A12R | Right Port Address Inputs | 13-bit address bus for right port; enables true concurrent access to same or different addresses |
| I/O0L–I/O15L | Left Port Bidirectional Data | 16-bit data path; direction controlled by R/WL and OEL; supports byte-wide access via UBL/LBL |
| I/O0R–I/O15R | Right Port Bidirectional Data | 16-bit data path; direction controlled by R/WR and OER; isolated electrically from left port I/O |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables respective port; when both high, device enters ISB1 standby mode (50 µA typ. for L version) |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low write enable; high = read; controls data direction on corresponding I/O bus |
| OEL / OER | Output Enable (Left/Right) | Active-low enables output drivers; allows tristate control independent of R/W state |
| UBL / UBR | Upper-Byte Select | Active-low enables I/O8–I/O15; permits 8-bit bus multiplexing without external glue logic |
| LBL / LBR | Lower-Byte Select | Active-low enables I/O0–I/O7; supports byte-level granularity for mixed-width peripheral interfacing |
| SEML / SEMR | Semaphore Enable | Active-low enables semaphore register access (8 flags); required to read/write semaphores at A0–A2 |
| INTL / INTR | Interrupt Flag Output | Open-drain active-low output indicating semaphore or arbitration event; requires external pull-up |
| BUSYL / BUSYR | Busy Flag (Master/Slave) | When M/S = H, BUSYL is output indicating left port contention; when M/S = L, BUSYR is input for slave coordination |
| M/S | Master/Slave Select | High = master (BUSY output); low = slave (BUSY input); enables daisy-chain configuration for 32-bit+ data width |
| VCC / GND | Power Supply | Single 5V supply; 12 dedicated VCC pins and 12 GND pins ensure low-noise operation and signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous, independent read/write operations from left and right ports to identical or different memory locations without arbitration delay |
| Hardware Semaphore Logic | Eight dedicated flags accessible via A0–A2 and SEM pin; eliminates need for software mutexes or external arbitration ICs in multi-processor designs |
| Master/Slave Cascading | Supports 32-bit+ word expansion using M/S pin and BUSY handshake - no external logic required for error-free wide-bus implementation |
| Battery Backup Data Retention | Retains valid data at 2V supply down to –40°C; enables seamless failover in safety-critical systems during AC loss or brownout |
| Four Standby Power Modes | ISB3 achieves 0.2 mA typical current with CMOS-level inputs - ideal for low-power sleep states in always-on industrial gateways |
Applications
| Telecom Line Card Buffering | Avionics I/O Controller Memory |
|---|---|
Use Scenario: Dual-processor line card where DSP handles packet processing and ARM manages protocol stack and management interface. IC Role / Device Role / Timing Role: Shared memory buffer with deterministic latency; left port serves DSP, right port serves ARM, BUSY signals prevent race conditions during shared register updates. Use Value: Eliminates FIFO bottlenecks and software synchronization overhead; 55 ns access ensures sub-microsecond inter-processor messaging latency. | Use Scenario: Flight control computer with redundant sensor acquisition modules feeding a central processor via ARINC-429 or MIL-STD-1553 interfaces. IC Role / Device Role / Timing Role: Real-time data exchange buffer between sensor interface ASIC and flight control CPU; semaphore flags coordinate timestamped sensor frame handoff. Use Value: Hardware semaphore support guarantees atomic frame ownership transfer; 2V data retention maintains last-known-safe state during transient power faults. |
| Industrial Motion Control PLC | Medical Imaging Data Pipeline |
Use Scenario: CNC controller with FPGA-based trajectory generator and ARM-based HMI/logic engine sharing position and status data. IC Role / Device Role / Timing Role: Coherent memory window for motion profile buffers and I/O status registers; M/S pin configures master (FPGA) and slave (ARM) for synchronized update cycles. Use Value: Master/slave BUSY handshake prevents write collisions during real-time motion updates; 84-pin PLCC provides robust thermal cycling performance in factory environments. | Use Scenario: Ultrasound system with FPGA-accelerated beamforming and ARM-based image reconstruction pipeline exchanging raw RF samples. IC Role / Device Role / Timing Role: High-bandwidth pixel buffer between acquisition and processing domains; dual-port allows continuous streaming into one port while reconstruction reads from the other. Use Value: 55 ns tRC enables >18 MHz sustained throughput; separate byte enables (UBL/LBL) simplify alignment of 12-bit ADC samples to 16-bit bus. |
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-55AXC | 55 ns access, 8K × 16, 3.3V core with 5V-tolerant I/O; lower active power (350 mW typ.), no 2V data retention | Requires level translation in pure 5V systems; better suited for new 3.3V designs with mixed-voltage I/O | Select when migrating to lower-voltage platforms and external level shifters are acceptable |
| IDT70V25L25PF8 | 25 ns access, 8K × 16, 3.3V supply only; supports -40°C to +85°C but lacks 2V data retention and 5V compatibility | Not pin-compatible; requires PCB redesign and voltage regulator change; higher speed but incompatible supply domain | Choose only for greenfield 3.3V designs where 25 ns latency is mandatory and battery backup is unnecessary |
Compared with CY7C028V-55AXC and IDT70V25L25PF8, the 7025L55PF8 uniquely retains full 5V TTL compatibility, industrial temperature rating, and proven 2V battery backup - making it irreplaceable in legacy-reliant, safety-critical, or mixed-voltage upgrade scenarios.
Availability
7025L55PF8 is available at Aetrix Electronics and suitable for telecom infrastructure, avionics subsystems, and industrial motion control requiring stable component supply across extended product lifecycles and obsolescence-sensitive programs.
Supply support for 7025L55PF8 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, specializes in timing, memory interface, and RF power solutions for communications, computing, and industrial markets.
The IDT7025 family was engineered for deterministic, low-latency shared memory in dual-processor real-time systems - targeting aerospace, defense, and factory automation applications demanding guaranteed arbitration and data coherency.
FAQ
What is the maximum operating temperature range for the 7025L55PF8?
The 7025L55PF8 is rated for industrial temperature operation from –40°C to +85°C. This specification is validated across all AC and DC parameters in the official IDT datasheet DSC 2683/13, and applies to the 7025L55PF8 variant in the 84-pin PLCC package. It does not support military-grade –55°C to +125°C operation.
Does the 7025L55PF8 support true simultaneous read operations from both ports to the same memory address?
Yes, the 7025L55PF8 supports true simultaneous reads from both left and right ports to the same memory location. This is enabled by its true dual-ported memory cell architecture - confirmed in the "Features" section of the IDT datasheet DSC 2683/13. No BUSY assertion or arbitration delay occurs during concurrent reads, ensuring deterministic latency in real-time systems.
How does the M/S pin affect BUSY signal behavior on the 7025L55PF8?
On the 7025L55PF8, the M/S pin configures BUSY functionality: when M/S = HIGH, BUSYL acts as an output flag indicating left-port contention; when M/S = LOW, BUSYR becomes an input used by the device in slave mode to synchronize with a master's BUSY output. This dual-mode behavior is explicitly defined in the "Pin Names" table and functional block diagram of datasheet DSC 2683/13.
What is the minimum supply voltage required to retain data in the 7025L55PF8 during power loss?
The 7025L55PF8 guarantees data retention down to 2.0 V - a feature exclusive to the "L" (low-power) variant. This is specified in Table 10 ("Data Retention Characteristics") of datasheet DSC 2683/13, with ICCDR ≤ 4000 µA over the full industrial temperature range. The "S" variant does not support this 2V retention mode.
Is the 7025L55PF8 pin-compatible with other members of the IDT7025 family such as the 7025S55PF8?
Yes, the 7025L55PF8 is pin-compatible with the 7025S55PF8 and all other 7025X55 variants in the same 84-pin PLCC package. They share identical pinout, package dimensions, and DC/AC timing specifications except for standby current (ISB1–ISB4) and data retention capability - confirmed in the "Pin Configurations" and "DC Electrical Characteristics" sections of datasheet DSC 2683/13.
7025L55PF8 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:
- 55ns
- Access Time:
- 55 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)
7025L55PF8 FAQ
1.How can I place an order for 7025L55PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7025L55PF8 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 7025L55PF8 reliable?
The price and inventory of 7025L55PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7025L55PF8 is usually 5 days.
3.What payment methods are accepted for 7025L55PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7025L55PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7025L55PF8?
7025L55PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7025L55PF8 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 7025L55PF8?
For technical support, including 7025L55PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7025L55PF8 requirements.
6.How does Aetrix verify that 7025L55PF8 is sourced from the original manufacturer or authorized distributors?
All 7025L55PF8 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 7025L55PF8 meets industry standards.
7.What is the process for return or replacement of 7025L55PF8?
All 7025L55PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7025L55PF8, 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 7025L55PF8 part is unused and in its original packaging.
Return procedure for 7025L55PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7025L55PF8 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…
