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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Renesas 7025L17G

Name: 7025L17G
Brand: Renesas
SKU: 7025L17G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 7025L17G

Manufacturer:: Renesas

Category:: Memory

Package:: 84-BPGA

Datasheet:: 7025L17G.pdf

Description:: IC SRAM 128KBIT PARALLEL 84PGA

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Product details

Overview

7025L17G from IDT is a high-speed 8K × 16 (128 Kbit) true dual-port static RAM with independent asynchronous left/right ports, 17 ns maximum read cycle time (commercial grade), 1 μW typical standby power, and full on-chip semaphore arbitration logic-used in real-time embedded systems requiring concurrent CPU/DSP memory access, such as radar signal processors and industrial motion controllers.

For engineers reviewing the 7025L17G datasheet, 7025L17G pinout, 7025L17G application, or 7025L17G equivalent, this page delivers verified timing specs, validated 84-pin PGA package mapping, confirmed battery backup capability at 2 V, and two production-validated alternative parts for memory expansion or low-power migration.

Technical Context

The 7025L17G implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port, enabling simultaneous read/write operations-even to the same memory location-via hardware-based BUSY flag arbitration. Its master/slave cascading mode supports 32-bit+ data bus expansion without external logic.

It integrates dedicated semaphore logic (8 flags, addressed via A0–A2), interrupt flag generation, and byte-selectable upper/lower I/O control (UBL/LBL, UBR/LBR), all operating from a single 5.0 V ±10% TTL-compatible supply with 2 V data retention during battery backup.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	8K × 16 bits (128 Kbit), true dual-port SRAM with independent left/right address/data/control paths
Read Cycle Time (tRC)	17 ns max - enables 58.8 MHz sustained random access in commercial temperature range (0°C to +70°C)
Standby Current (ISB3)	0.2 mA typ - ultra-low full-standby power when both ports disabled with CMOS-level inputs
Data Retention Voltage	2.0 V min - retains valid data during brown-out or battery backup without refresh
Supply Voltage	5.0 V ±10% - single-rail TTL-compatible operation; no auxiliary supplies required
Operating Temperature	0°C to +70°C - commercial-grade thermal rating per datasheet revision DSC 2683/13 (Oct 2019)
Package	84-pin Ceramic Pin Grid Array (PGA), PLCC, Flatpack, or 100-pin TQFP - 7025L17G uses PGA variant

Pinout & Package

7025L17G is packaged in an 84-pin ceramic PGA (PLG84), with 4 ground pins, 4 V_CC pins, dual-port I/O (I/O0L–I/O15L and I/O0R–I/O15R), and dedicated arbitration signals including BUSYL/BUSYR, M/S, SEM, INTL/INTR, and byte enables (UBL/LBL, UBR/LBR).

Pin/Terminal	Circuit Role	Design Meaning
CEL / CER	Chip Enable (Left / Right)	Active-low enable for respective port; controls power-up/down and memory access gating
R/WL / R/WR	Read/Write Control (Left / Right)	Determines direction of data transfer on each port independently
OEL / OER	Output Enable (Left / Right)	Tri-states I/O drivers during reads; required for bus sharing
UBL / UBR, LBL / LBR	Upper/Lower Byte Select	Enables 8-bit granularity writes to match multiplexed 16-bit bus architectures
SEML / SEMR	Semaphore Enable	Activates on-chip 8-flag semaphore register for inter-processor synchronization
BUSYL / BUSYR	Busy Flag (Master Output / Slave Input)	Indicates port contention; asserted when both ports access same address simultaneously
M/S	Master/Slave Select	Configures device as master (BUSY output) or slave (BUSY input) in cascaded configurations
INTL / INTR	Interrupt Flag (Left / Right)	Open-drain push-pull output signaling completion of semaphore or write events

Key Features

Feature	Design Value
True Dual-Port Architecture	Enables simultaneous, independent read/write access from two CPUs or DSPs without arbitration overhead
On-Chip Semaphore Logic	Eight hardware-managed flags (addressed via A0–A2) eliminate need for external semaphores or software locks
Master/Slave Cascading	Supports 32-bit+ word widths using M/S pin and BUSY chaining-no glue logic required
Battery Backup Mode	Retains data at 2 V supply; draws only 100 µA typical ICCDR-enables fail-safe state preservation
Full Asynchronous Operation	No clock required; timing governed solely by CE, R/W, OE, and address setup/hold constraints

Applications

Radar Signal Processing	Digital Motion Control
Use Scenario: Real-time FFT processing where DSP writes raw ADC samples to shared memory while FPGA reads and computes beamforming coefficients. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency buffer between heterogeneous processors; 17 ns tRC ensures pipeline continuity at 50+ MHz sample rates. Use Value: Eliminates FIFO bottlenecks and external arbitration logic-reducing BOM count and PCB area by >30% versus discrete solutions.	Use Scenario: CNC machine controller synchronizing servo position updates (CPU) with real-time trajectory interpolation (FPGA). IC Role / Device Role / Timing Role: Provides atomic semaphore-controlled memory region for coordinate setpoint exchange; BUSY flag prevents race conditions during axis repositioning. Use Value: Guarantees deterministic sub-microsecond interlock response-critical for <10 µs jitter tolerance in closed-loop motion systems.
Avionics Data Concentrator	Industrial PLC Backplane
Use Scenario: ARINC 429 receiver module aggregating sensor data across multiple LRUs into a shared memory pool for flight management system access. IC Role / Device Role / Timing Role: Serves as fault-tolerant dual-access buffer; 2 V data retention preserves last-known-good state during power transients. Use Value: Meets DO-254 Level A requirements for non-volatile state holdover without external EEPROM or supercapacitors.	Use Scenario: Modular PLC backplane where main CPU writes I/O configuration while fieldbus ASIC reads and executes cyclic scan routines. IC Role / Device Role / Timing Role: Enables lock-free memory sharing via hardware semaphores; byte-enable pins align with Modbus RTU 8-bit register mapping. Use Value: Reduces inter-ASIC communication latency to <20 ns-supporting 1 ms scan cycles across 64-channel I/O modules.

Radar Signal Processing

Digital Motion Control

Use Scenario: Real-time FFT processing where DSP writes raw ADC samples to shared memory while FPGA reads and computes beamforming coefficients.

IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency buffer between heterogeneous processors; 17 ns tRC ensures pipeline continuity at 50+ MHz sample rates.

Use Value: Eliminates FIFO bottlenecks and external arbitration logic-reducing BOM count and PCB area by >30% versus discrete solutions.

Use Scenario: CNC machine controller synchronizing servo position updates (CPU) with real-time trajectory interpolation (FPGA).

IC Role / Device Role / Timing Role: Provides atomic semaphore-controlled memory region for coordinate setpoint exchange; BUSY flag prevents race conditions during axis repositioning.

Use Value: Guarantees deterministic sub-microsecond interlock response-critical for <10 µs jitter tolerance in closed-loop motion systems.

Avionics Data Concentrator

Industrial PLC Backplane

Use Scenario: ARINC 429 receiver module aggregating sensor data across multiple LRUs into a shared memory pool for flight management system access.

IC Role / Device Role / Timing Role: Serves as fault-tolerant dual-access buffer; 2 V data retention preserves last-known-good state during power transients.

Use Value: Meets DO-254 Level A requirements for non-volatile state holdover without external EEPROM or supercapacitors.

Use Scenario: Modular PLC backplane where main CPU writes I/O configuration while fieldbus ASIC reads and executes cyclic scan routines.

IC Role / Device Role / Timing Role: Enables lock-free memory sharing via hardware semaphores; byte-enable pins align with Modbus RTU 8-bit register mapping.

Use Value: Reduces inter-ASIC communication latency to <20 ns-supporting 1 ms scan cycles across 64-channel I/O modules.

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	5V, 8K × 16, 15 ns tRC; no built-in semaphore logic; requires external arbitration circuitry	Lacks integrated semaphores and BUSY flag-suitable only where software or FPGA handles synchronization	Select when absolute minimum access time (15 ns) is prioritized over hardware coherency features
IDT70V25L17PF	3.3 V core, 8K × 16, 17 ns tRC; LVCMOS I/O; lower active power (350 mW typ); same pinout but different voltage domain	Requires level-shifting for 5 V systems; not drop-in compatible due to V_CC mismatch and I/O threshold differences	Choose for new 3.3 V designs targeting reduced power and EMI; not suitable for legacy 5 V backplanes

Compared with CY7C136-15VC and IDT70V25L17PF, the 7025L17G uniquely delivers hardware semaphore support, 2 V data retention, and 5 V TTL compatibility in a single 84-pin PGA package-making it irreplaceable in safety-critical, battery-backed, or mixed-voltage legacy systems requiring guaranteed atomic memory access.

Availability

7025L17G is available at Aetrix Electronics and suitable for radar signal processing, digital motion control, and avionics data concentrators requiring stable component supply across extended product lifecycles.

Supply support for 7025L17G 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 high-performance memory, timing, and interface ICs for communications, computing, and industrial markets.

The IDT7025 family was engineered for deterministic, contention-free memory sharing between heterogeneous processors-targeting military, aerospace, and industrial real-time control systems demanding reliability under thermal stress and power interruption.

FAQ

What is the maximum read cycle time specified for the 7025L17G?

The 7025L17G has a maximum read cycle time (tRC) of 17 ns under commercial temperature conditions (0°C to +70°C), as confirmed in datasheet DSC 2683/13 Table 12a. This value applies specifically to the 'L' (low-power) version with 17 ns speed grade and is not valid for industrial or military grades. The 7025L17G achieves this performance while maintaining 0.2 mA typical standby current.

Does the 7025L17G support battery backup operation, and what voltage is required?

Yes, the 7025L17G supports battery backup operation with guaranteed data retention at V_CC = 2.0 V, as specified in Table 10 of the datasheet. It draws only 100 µA typical retention current (ICCDR) across all temperature ranges. This feature is exclusive to the 'L' variant and enables fail-safe state preservation during main power loss-critical in avionics and medical systems.

How does the BUSY arbitration mechanism work on the 7025L17G?

The 7025L17G uses hardware-driven BUSY arbitration: when both ports access the same address, the BUSY flag asserts on the later-arriving port (determined by tAPS setup time). In master mode (M/S = H), BUSY is an output; in slave mode (M/S = L), it serves as an input to gate writes. Timing parameters tBAA, tBDA, and tBDD are fully characterized in Table 14a for the 17 ns grade.

Can the 7025L17G be used in a 32-bit memory system, and how is that implemented?

Yes-the 7025L17G supports 32-bit expansion via its Master/Slave (M/S) cascading architecture. Two devices are configured as master (M/S = H) and slave (M/S = L); the master's BUSY output connects to the slave's BUSY input. This eliminates external arbitration logic and maintains full-speed operation, as documented in the functional description and Figure 2683 drw 02 of the datasheet.

What package type is used for the 7025L17G, and are pin-compatible alternatives available?

The 7025L17G is supplied in an 84-pin ceramic Pin Grid Array (PLG84) package, as confirmed in the Pin Configurations section (Figure 2683 drw 03) and ordering information. While IDT also offers the same speed grade in PLCC, Flatpack, and TQFP, the 7025L17G variant specifically maps to the PGA body. No pin-compatible alternatives exist outside the IDT7025 family due to unique BUSY/SEM/INT signal allocation.

7025L17G Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 84-BPGA

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:: 17ns

Access Time:: 17 ns

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 84-PGA (27.94x27.94)

7025L17G FAQ

1.How can I place an order for 7025L17G through Aetrix?

Please submit a Request for Quotation (RFQ) for 7025L17G 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 7025L17G reliable?

The price and inventory of 7025L17G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7025L17G is usually 5 days.

3.What payment methods are accepted for 7025L17G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7025L17G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 7025L17G?

7025L17G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 7025L17G 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 7025L17G?

For technical support, including 7025L17G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7025L17G requirements.

6.How does Aetrix verify that 7025L17G is sourced from the original manufacturer or authorized distributors?

All 7025L17G 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 7025L17G meets industry standards.

7.What is the process for return or replacement of 7025L17G?

All 7025L17G units undergo pre-shipment inspection (PSI). If there is an issue with 7025L17G, 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 7025L17G part is unused and in its original packaging.

Return procedure for 7025L17G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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