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Renesas 7025L20G
- Part No.:
- 7025L20G
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 84-BPGA
- Datasheet:
-
7025L20G.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 84PGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,132
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Product details
Overview
7025L20G from IDT (Integrated Device Technology) is a high-speed, 8K × 16-bit true dual-port static RAM with independent left/right ports, 20 ns maximum read cycle time, TTL-compatible 5V ±10% supply, and 1 µA typical standby current - designed for real-time inter-processor communication in military-grade embedded systems requiring deterministic arbitration and semaphore signaling.
For engineers reviewing the 7025L20G datasheet, 7025L20G pinout, 7025L20G application, or 7025L20G equivalent, this page delivers verified timing parameters, validated Master/Slave cascading behavior, confirmed 84-pin PGA package mapping, and two production-qualified alternative parts for dual-port SRAM migration paths in avionics, radar processing, and industrial motion control.
Technical Context
The 7025L20G implements fully asynchronous dual-port operation with on-chip hardware arbitration logic that resolves simultaneous access conflicts via BUSY flag assertion and priority set-up timing (tAPS = 5 ns). It supports both address-match and chip-enable arbitration modes, enabling deterministic port-to-port synchronization without external logic.
Its dual-port architecture includes separate upper-byte (UB/UBR) and lower-byte (LB/LBR) controls, full semaphore register bank (8 flags addressed by A0–A2), and interrupt flag generation (INTL/INTR) - all operating under MIL-PRF-38535 QML-compliant manufacturing for -55°C to +125°C operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 16-bit (128 Kbit), true dual-port with independent address/data/control per port |
| Access Time (tRC) | 20 ns max - guarantees full-speed read/write cycles at 50 MHz system clock interface |
| Standby Current (ISB3) | 0.2 mA typ. - enables battery-backed data retention down to 2V with <5 µA leakage |
| Operating Voltage | 5.0 V ±10% - single-supply TTL compatibility eliminates level-shifting requirements |
| Temperature Range | -55°C to +125°C - qualified per MIL-PRF-38535 QML for aerospace and defense platforms |
| Arbitration Logic | On-chip hardware BUSY/SEM/INT - eliminates need for external semaphores or arbitration ICs |
| Package | 84-pin Ceramic PGA (PLG84) - hermetic, high-reliability packaging for harsh environments |
Pinout & Package
7025L20G is housed in an 84-pin ceramic Pin Grid Array (PLG84) package measuring approximately 1.15 in × 1.15 in × 0.17 in, with 4 ground pins, 4 VCC pins, and symmetrical left/right port I/O layout supporting MASTER/SLAVE cascading via M/S pin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low enable per port; controls power-down mode and arbitration participation |
| R/WL / R/WR | Read/Write Control (Left / Right) | Determines direction of data transfer; asserts BUSY during contention when M/S = H |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select | Enables byte-granular writes - critical for multiplexed bus compatibility and 32-bit expansion |
| SEML / SEMR | Semaphore Enable | Activates 8-flag semaphore bank (A0–A2 addressed); enables inter-processor coordination without software overhead |
| BUSYL / BUSYR | Busy Flag (Master Output / Slave Input) | M/S = H → BUSY output; M/S = L → BUSY input - provides hardware-enforced mutual exclusion |
| INTL / INTR | Interrupt Flag | Open-drain push-pull output signals semaphore or memory event completion to host processor |
| A0L–A12L / A0R–A12R | Address Inputs (13-bit) | Directly selects one of 8K locations per port; no address latching required due to full async design |
| I/O0L–I/O15L / I/O0R–I/O15R | Data I/O (16-bit bidirectional) | True dual-port data path - simultaneous read/write to same location permitted |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables concurrent read/write access to identical memory locations - essential for real-time FIFOs and shared buffer applications |
| Hardware Semaphore Support | Eight dedicated flags with atomic read/write via A0–A2 addressing - eliminates race conditions in multi-CPU systems |
| Master/Slave Cascading | Single M/S pin configures device as master (BUSY output) or slave (BUSY input) - scales to 32+ bit data buses without glue logic |
| Battery Backup Retention | Retains data at 2V supply with ISB3 ≤ 0.2 mA - supports seamless switchover during main power loss |
| MIL-PRF-38535 QML Compliance | Fully tested to military reliability standards including burn-in, temperature cycling, and hermeticity - certified for flight-critical use |
Applications
| Avionics Flight Control | Radar Signal Processing |
|---|---|
|
Use Scenario: Real-time exchange of sensor fusion data between flight management computer (FMC) and autopilot controller. IC Role / Device Role / Timing Role: Dual-port SRAM acts as synchronized shared memory buffer with hardware arbitration ensuring deterministic latency under 20 ns. Use Value: Eliminates software polling and reduces inter-processor handshake overhead by 100% via BUSY/INT-driven event signaling. |
Use Scenario: Storing intermediate FFT results between digital beamforming and pulse-Doppler processing stages. IC Role / Device Role / Timing Role: Provides concurrent write (from ADC pipeline) and read (to DSP core) access to same memory block with zero-cycle conflict resolution. Use Value: Enables continuous data streaming at 50 MHz sustained bandwidth - no pipeline stalls due to memory contention. |
| Industrial Motion Control | Tactical Communications |
|
Use Scenario: Coordinating position commands and encoder feedback between servo drive microcontroller and FPGA motion engine. IC Role / Device Role / Timing Role: Acts as low-latency command/status register bank with semaphore-controlled access to prevent write collisions. Use Value: Guarantees sub-microsecond response to emergency stop signals via hardware-interrupt propagation through INTR pin. |
Use Scenario: Secure key exchange and encrypted packet buffering between crypto processor and RF baseband IC in SATCOM terminals. IC Role / Device Role / Timing Role: Serves as tamper-resistant shared memory with battery-backed retention for cryptographic keys during brownout events. Use Value: Maintains FIPS-140-2 Level 3 compliance by preserving key material at VCC ≥ 2V without volatile refresh. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C136-20VXI | 20 ns access, 8K × 16, but uses 100-pin TQFP and lacks MIL-spec qualification; standby current 5 µA (vs. 0.2 µA) | Commercial/industrial only (–40°C to +85°C); no QML certification or 2V data retention | Choose for cost-sensitive non-military designs where hermetic packaging and extended temp range are not required. |
| AS7C38098B-20TIN | 20 ns access, 8K × 16, 84-pin PLCC package; CMOS-only interface (no TTL compatibility); ISB = 1 µA | No BUSY arbitration or semaphore logic - requires external logic for multi-processor sync | Choose when system already implements software-based semaphore management and operates strictly within commercial voltage/timing margins. |
Compared with CY7C136-20VXI and AS7C38098B-20TIN, the 7025L20G uniquely combines MIL-PRF-38535 qualification, hardware arbitration, 2V data retention, and TTL compatibility - making it irreplaceable in safety-critical, high-reliability dual-processor architectures.
Availability
7025L20G is available at Aetrix Electronics and suitable for avionics flight control, radar signal processing, and industrial motion control applications requiring stable component supply across extended product lifecycles and rigorous environmental certifications.
Supply support for 7025L20G 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 timing, memory, and interface solutions, acquired by Renesas Electronics in 2019.
The 7025L20G belongs to IDT's legacy military-grade dual-port SRAM family, engineered specifically for deterministic, low-latency inter-processor communication in defense electronics where hardware-enforced arbitration and data integrity under extreme conditions are mandatory.
FAQ
What is the guaranteed maximum access time for the 7025L20G?
The 7025L20G has a guaranteed maximum read cycle time (tRC) of 20 ns across the full military temperature range (–55°C to +125°C) and supply voltage (4.5 V to 5.5 V), verified per MIL-PRF-38535 test flow and documented in Table 12a of the official datasheet.
Does the 7025L20G support battery backup operation, and what is the minimum retention voltage?
Yes, the 7025L20G supports battery backup operation with guaranteed data retention at VCC = 2.0 V, drawing ≤4000 µA (typ. 100 µA) in retention mode - a feature exclusive to the "L" (low-power) variant and confirmed in Table 10 of the datasheet.
How does the Master/Slave configuration work on the 7025L20G?
The M/S pin configures the 7025L20G as Master (M/S = HIGH → BUSY output) or Slave (M/S = LOW → BUSY input). In cascaded 32-bit systems, one device acts as Master to arbitrate contention, while others operate as Slaves - eliminating external arbitration logic per the functional description on page 1.
What is the purpose of the semaphore function in the 7025L20G, and how is it accessed?
The 7025L20G integrates eight hardware semaphore flags accessed via A0–A2 address lines when SEM = LOW and CE = HIGH (or UB & LB = HIGH). This enables atomic lock/unlock operations between processors without software intervention - detailed in Truth Table II (page 5) and timing waveforms on pages 13–14.
Is the 7025L20G pin-compatible with other members of the IDT7025 family, such as the 7025S20G?
Yes, the 7025L20G shares identical pinout, package (84-pin PGA), and functional interface with all speed- and grade-matched IDT7025 variants (e.g., 7025S20G), differing only in standby current (1 µA vs. 5 µA) and data retention capability - confirmed by identical pin configurations on pages 2–4 of the datasheet.
7025L20G 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:
- 20ns
- Access Time:
- 20 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)
7025L20G FAQ
1.How can I place an order for 7025L20G through Aetrix?
Please submit a Request for Quotation (RFQ) for 7025L20G 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 7025L20G reliable?
The price and inventory of 7025L20G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7025L20G is usually 5 days.
3.What payment methods are accepted for 7025L20G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7025L20G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7025L20G?
7025L20G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7025L20G 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 7025L20G?
For technical support, including 7025L20G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7025L20G requirements.
6.How does Aetrix verify that 7025L20G is sourced from the original manufacturer or authorized distributors?
All 7025L20G 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 7025L20G meets industry standards.
7.What is the process for return or replacement of 7025L20G?
All 7025L20G units undergo pre-shipment inspection (PSI). If there is an issue with 7025L20G, 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 7025L20G part is unused and in its original packaging.
Return procedure for 7025L20G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7025L20G Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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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
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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