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Renesas 7025L20JGI8
- Part No.:
- 7025L20JGI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 84-LCC (J-Lead)
- Datasheet:
-
7025L20JGI8.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 84PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,667
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Product details
Overview
IDT7025L20JGI8 from IDT (now Renesas) is a high-speed 8K × 16-bit true dual-port static RAM with independent left/right ports, 20 ns maximum access time, industrial temperature range (–40°C to +85°C), and 1 µA typical standby current. It enables simultaneous asynchronous reads/writes 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 IDT7025L20JGI8 datasheet, IDT7025L20JGI8 pinout, IDT7025L20JGI8 application, or IDT7025L20JGI8 equivalent, key selection considerations include its dual-port arbitration logic, on-chip semaphore support, BUSY flag timing under M/S = VIH, battery-backed 2V data retention, and compatibility with TTL-level 5V ±10% supply.
Technical Context
The IDT7025L20JGI8 implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via hardware BUSY flag assertion when both ports access the same address, with priority determined by M/S configuration (master asserts BUSY, slave samples it).
It integrates full semaphore signaling using eight dedicated flags addressed by A0–A2, accessed via SEM = VIL and controlled by CE/UB/LB states. The device supports byte-selectable writes (UBL/LBL), interrupt flag generation (INTL/INTR), and automatic power-down via chip enable (CEL/CER), achieving 1 µA typical standby current in full CMOS-input mode.
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 (max) | 20 ns - guarantees deterministic read latency for real-time inter-processor communication |
| Supply Voltage | 5.0 V ±10% - compatible with legacy TTL logic families without level-shifting |
| Standby Current (typ) | 1 µA - enables battery backup operation with 2V data retention for nonvolatile memory hold |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded applications including motor control and PLCs |
| Package | 84-pin PLCC (JGI8 suffix) - surface-mount compatible with standard reflow profiles and IPC-compliant layout |
| Port Arbitration | Hardware BUSY flag + semaphore logic - eliminates need for external arbitration logic in multi-CPU systems |
Pinout & Package
Package: 84-pin Plastic Leaded Chip Carrier (PLCC), JEDEC MS-026AC, body size 29.21 mm × 29.21 mm × 4.32 mm, lead pitch 1.27 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A12L | Left port address inputs | 13-bit address bus for left-side memory access (8K = 2¹³) |
| I/O0L–I/O15L | Left port bidirectional data | 16-bit data path; direction controlled by R/WL and OEL |
| CEL, OEL, R/WL | Left port control enables | Chip Enable, Output Enable, Read/Write Enable - fully asynchronous control |
| UBL, LBL | Left upper/lower byte select | Enables byte-granular write masking for multiplexed bus compatibility |
| SEML, INTL, BUSYL | Left semaphore/interrupt/busy | SEM enables semaphore access; INT signals cross-port event; BUSY indicates contention |
| M/S | Master/Slave select | High = BUSY output (master); Low = BUSY input (slave) - configures arbitration role |
| VCC, GND | Power and ground | Multiple VCC/GND pins distributed for low-noise operation and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port architecture | Enables concurrent read/write from independent processors without software coordination or wait states |
| On-chip semaphore logic | Eight hardware flags accessible via A0–A2 eliminate need for external semaphores in RTOS or bare-metal IPC |
| Master/slave cascading | Supports 32-bit+ data bus expansion using M/S pin and BUSY handshake - no glue logic required |
| Battery backup mode | Retains data at 2V supply - enables seamless power-fail recovery in industrial controllers |
| Full asynchronous operation | No clock required; all timing defined by setup/hold and access parameters - simplifies timing closure |
Applications
| Industrial PLC Memory Buffer | Real-Time Motor Control Co-Processor |
|---|---|
Use Scenario: Dual-CPU architecture where one CPU handles motion trajectory calculation and another manages I/O scanning and safety monitoring. IC Role / Device Role / Timing Role: Shared memory buffer enabling zero-copy data exchange between CPUs with hardware-enforced mutual exclusion via semaphores. Use Value: Eliminates polling delays and software locks; 20 ns access ensures sub-microsecond inter-processor latency for closed-loop servo updates. | Use Scenario: High-speed encoder feedback processing and PWM update synchronization in servo drives. IC Role / Device Role / Timing Role: Dual-port RAM stores position error data and command setpoints; left port writes error values, right port reads for PID computation. Use Value: Concurrent access avoids pipeline stalls; BUSY arbitration prevents corrupted reads during write bursts from encoder interface logic. |
| Avionics Data Acquisition Hub | Medical Imaging Signal Pipeline |
Use Scenario: Multi-sensor data aggregation (IMU, GPS, pressure) with deterministic timestamping and fault isolation. IC Role / Device Role / Timing Role: Central memory node where sensor interfaces write raw data and flight management unit reads processed packets. Use Value: Hardware semaphore coordination ensures atomic packet assembly; 2V data retention preserves last valid state during brownout events. | Use Scenario: Real-time digital signal processing chain linking ADC front-end, FPGA accelerator, and display controller. IC Role / Device Role / Timing Role: Frame buffer memory allowing simultaneous pixel stream ingestion (left port) and rendering engine readout (right port). Use Value: 16-bit width matches typical medical image depth; 20 ns access sustains >50 MB/s throughput for ultrasound video streaming. |
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-20AXC | 5V, 8K × 16, 20 ns, 100-pin TQFP; higher ICC active current (220 mA vs. 160 mA typ) | Lacks native M/S cascading logic; requires external arbitration for multi-device 32-bit expansion | Preferred when board space allows larger TQFP and external logic is acceptable |
| AS7C38098B-20TIN | 3.3V core, 8K × 16, 20 ns, 100-pin TQFP; no BUSY arbitration or semaphore logic | Requires software-managed semaphores and external busy-handshake circuitry | Suitable for cost-sensitive designs where voltage scaling and simplified feature set are priorities |
Compared with CY7C028V-20AXC and AS7C38098B-20TIN, the IDT7025L20JGI8 uniquely integrates hardware BUSY arbitration and eight semaphores in an 84-pin PLCC, reducing BOM count and PCB area while ensuring deterministic real-time IPC without software overhead.
Availability
IDT7025L20JGI8 is available at Aetrix Electronics and suitable for industrial PLCs, avionics data loggers, and medical imaging subsystems requiring stable component supply across extended product lifecycles.
Supply support for IDT7025L20JGI8 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), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory, and interface solutions for high-performance computing and industrial systems.
The IDT7025 family was designed specifically for deterministic inter-processor communication in real-time embedded systems, emphasizing hardware arbitration, low-latency dual-port access, and industrial-grade reliability.
FAQ
What is the operating voltage range for the IDT7025L20JGI8?
The IDT7025L20JGI8 operates from a single 5.0 V ±10% supply (4.5 V to 5.5 V). It does not support 3.3 V operation. The device retains data down to 2.0 V in battery backup mode, but functional operation requires VCC within the specified 4.5–5.5 V range. All DC and AC specifications in the datasheet are guaranteed only within this voltage window.
Does the IDT7025L20JGI8 support true simultaneous read operations from both ports to the same address?
Yes, the IDT7025L20JGI8 supports true simultaneous reads from both ports to the same memory location without contention or arbitration delay. This is enabled by its true dual-port SRAM cell architecture. The BUSY flag is asserted only during simultaneous read/write or write/write contention - not during read/read - ensuring deterministic zero-latency coherency for mirrored data access.
How is the master/slave configuration implemented on the IDT7025L20JGI8?
The master/slave configuration is controlled solely by the M/S pin: when M/S = HIGH, the device acts as a master and outputs BUSY on BUSYL/BUSYR; when M/S = LOW, it acts as a slave and samples BUSY as an input. In cascaded 32-bit systems, one IDT7025L20JGI8 is configured as master (M/S = H) and others as slaves (M/S = L), using the BUSY handshake to coordinate write access across devices.
What is the significance of the 'L' in IDT7025L20JGI8?
The 'L' denotes the low-power variant of the IDT7025 family. Compared to the 'S' version, the IDT7025L20JGI8 reduces typical standby current from 5 mW to 1 mW (1 µA at VCC = 5 V) and enables reliable 2V data retention for battery backup. Active power remains identical (750 mW typ), preserving performance while extending hold time during power loss.
Can the IDT7025L20JGI8 be used in military-temperature applications?
No, the IDT7025L20JGI8 (suffix JGI8) is rated for industrial temperature range only (–40°C to +85°C). Military-grade versions exist in the IDT7025 family (e.g., suffix JGID for –55°C to +125°C), but the JGI8 package code explicitly denotes industrial qualification. Using IDT7025L20JGI8 outside its specified temperature range voids parametric guarantees and may cause timing violations or data corruption.
7025L20JGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 84-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 84-PLCC (29.31x29.31)
7025L20JGI8 FAQ
1.How can I place an order for 7025L20JGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7025L20JGI8 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 7025L20JGI8 reliable?
The price and inventory of 7025L20JGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7025L20JGI8 is usually 5 days.
3.What payment methods are accepted for 7025L20JGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7025L20JGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7025L20JGI8?
7025L20JGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7025L20JGI8 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 7025L20JGI8?
For technical support, including 7025L20JGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7025L20JGI8 requirements.
6.How does Aetrix verify that 7025L20JGI8 is sourced from the original manufacturer or authorized distributors?
All 7025L20JGI8 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 7025L20JGI8 meets industry standards.
7.What is the process for return or replacement of 7025L20JGI8?
All 7025L20JGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7025L20JGI8, 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 7025L20JGI8 part is unused and in its original packaging.
Return procedure for 7025L20JGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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