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Renesas 7025S20G
- Part No.:
- 7025S20G
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 84-BPGA
- Datasheet:
-
7025S20G.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 84PGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,855
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Product details
Overview
7025S20G from IDT (Integrated Device Technology) is a high-speed 8K × 16-bit true dual-port static RAM with independent asynchronous left/right ports, 20 ns maximum read cycle time (commercial/industrial), TTL-compatible 5V ±10% supply, and on-chip semaphore arbitration logic. It enables simultaneous read 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 7025S20G datasheet, 7025S20G pinout, 7025S20G application, or 7025S20G equivalent, this page delivers verified timing parameters (tRC = 20 ns), power specs (750 mW active, 5 mW standby), dual-port arbitration behavior, BUSY/INT flag operation, and 84-pin PLCC package mapping - all critical for deterministic multi-processor memory sharing designs.
Technical Context
The 7025S20G implements fully asynchronous dual-port architecture with separate address, data, and control buses per port, enabling concurrent read/write operations without external arbitration logic. Its on-chip hardware semaphore logic uses eight dedicated flags (addressed via A0–A2) and supports atomic read-modify-write sequences for inter-processor synchronization.
Port arbitration is managed via BUSY flag signaling: when M/S = H (Master), BUSY is an output asserting during contention; when M/S = L (Slave), BUSY is an input used to stall writes. The device supports battery backup retention at 2V (L-version only) and operates across –40°C to +85°C industrial temperature range.
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 interfaces |
| Access Time (tRC) | 20 ns max - guarantees full-speed operation in 50 MHz synchronous bus environments with no wait states |
| Supply Voltage | 5.0 V ±10% - single TTL-compatible rail eliminates need for voltage translation in legacy 5V systems |
| Active Power (typ.) | 750 mW - enables use in thermally constrained industrial controllers without forced cooling |
| Standby Power (typ.) | 5 mW - supports low-power sleep modes while preserving memory state during idle periods |
| Operating Temperature | –40°C to +85°C - qualified for industrial automation, motor drives, and telecom line cards |
| Package | 84-pin PLCC (Plastic Leaded Chip Carrier) - surface-mount compatible with standard reflow profiles and IPC-7351B land patterns |
Pinout & Package
7025S20G is housed in an 84-pin Plastic Leaded Chip Carrier (PLCC) with 0.050" lead pitch and JEDEC MO-047AC outline. Pin 1 is marked by a corner notch; the package is lead-free and RoHS-compliant per ordering information.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Independent enable per port; deassertion places respective port in high-impedance or standby mode |
| R/WL / R/WR | Read/Write Control (Left / Right) | Active-low signal determining direction of data transfer on corresponding I/O bus |
| OEL / OER | Output Enable (Left / Right) | Controls tri-state of I/O drivers; required for bus sharing with other devices |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select | Enables byte-level write masking - essential for multiplexed 8-bit data bus compatibility |
| A0L–A12L / A0R–A12R | Address Inputs (Left / Right) | 13-bit addressing per port supports full 8K-word access; no external address latching required |
| I/O0L–I/O15L / I/O0R–I/O15R | Data I/O (Left / Right) | Bi-directional 16-bit data paths; electrically isolated between ports to prevent coupling |
| SEML / SEMR | Semaphore Enable | Activates on-chip semaphore register bank (8 flags); enables atomic inter-processor coordination |
| BUSYL / BUSYR | Busy Flag (Master Output / Slave Input) | When M/S = H, BUSYR asserts to block conflicting writes; when M/S = L, BUSYL is sampled as input |
| INTL / INTR | Interrupt Flag | Open-drain push-pull output signals semaphore or memory event to host processor interrupt controller |
| M/S | Master/Slave Select | Configures arbitration role: high = Master (BUSY output), low = Slave (BUSY input) |
| VCC, GND | Power Supply | Multiple distributed VCC/GND pins reduce switching noise and improve signal integrity in high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous reads from identical addresses on both ports - eliminates software polling delays in lock-step processors |
| Hardware Semaphore Logic | Eight dedicated flags with atomic read-modify-write support eliminate need for external mutex ICs or software semaphores |
| MASTER/SLAVE Cascading | Supports 32-bit+ data bus expansion using M/S pin and BUSY handshaking - no glue logic required for wide-memory systems |
| Asynchronous Port Operation | Each port operates independently with no shared clocks - ideal for heterogeneous processor pairs (e.g., DSP + MCU) |
| Low-Power Standby Mode | 5 mW typical standby current allows energy-sensitive applications to retain full memory state during idle cycles |
| TTL-Compatible Interface | Direct connection to legacy 5V microcontrollers, FPGAs, and ASICs without level shifters or bus buffers |
Applications
| Industrial Motion Controller | Digital Signal Processor (DSP) Co-Processor Memory |
|---|---|
|
Use Scenario: Real-time servo loop execution where FPGA handles PWM generation and ARM Cortex-M4 runs trajectory planning. IC Role / Device Role / Timing Role: Shared memory buffer between FPGA (left port) and MCU (right port) with hardware semaphore coordination for position/velocity data exchange. Use Value: Eliminates software-based polling or mailbox protocols; 20 ns access ensures sub-microsecond data coherency for 20 kHz control loops. |
Use Scenario: Offloading FFT computation from main CPU to dedicated DSP in radar signal processing unit. IC Role / Device Role / Timing Role: Dual-port RAM serves as ping-pong buffer: CPU writes raw ADC samples to left port while DSP reads/transforms via right port. Use Value: Enables zero-wait-state data streaming at 50 MB/s aggregate bandwidth, sustaining real-time 128-point FFT throughput. |
| Telecom Line Card Buffer | Avionics Data Acquisition Module |
|
Use Scenario: TDM frame buffering in E1/T1 interface card with dual ARM cores handling protocol stack and packet forwarding. IC Role / Device Role / Timing Role: Left port connected to framer ASIC, right port to application processor; BUSY arbitration prevents simultaneous write collisions on shared memory. Use Value: Guarantees deterministic 20 ns memory access for 2.048 Mbps TDM streams without frame loss under burst traffic conditions. |
Use Scenario: Sensor fusion module in flight control computer acquiring inertial, pressure, and temperature data across redundant channels. IC Role / Device Role / Timing Role: Dual-port RAM stores synchronized timestamped sensor packets; one port for acquisition FPGA, other for safety-certified ARM core. Use Value: Hardware semaphore ensures atomic updates of health status registers, satisfying DO-254 Level A determinism requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C136-20VC | 20 ns access, 8K × 16, but uses 100-pin TQFP and requires external arbitration logic for semaphore-like functions | Lacks integrated semaphore logic and BUSY arbitration; suitable only where discrete logic or firmware handles inter-processor sync | Select when footprint flexibility and higher I/O drive strength are prioritized over integrated arbitration. |
| IDT70V25S20PF | Pin-compatible 7025S20G upgrade with 3.3V core (5V-tolerant I/O), lower active power (450 mW), and extended -40°C to +105°C range | Requires voltage translation for pure 5V systems but enables migration to lower-power, higher-temperature designs | Select for new designs targeting reduced thermal load and extended temperature operation without PCB redesign. |
Compared with CY7C136-20VC and IDT70V25S20PF, the 7025S20G provides unique on-chip semaphore and MASTER/SLAVE arbitration in a mature 5V industrial-grade PLCC package - making it optimal for cost-sensitive, legacy-5V, and safety-critical deterministic memory-sharing applications where external logic minimization is mandatory.
Availability
7025S20G is available at Aetrix Electronics and suitable for industrial motion controllers, telecom line cards, avionics data acquisition modules, and digital signal processor co-processor memory subsystems requiring stable component supply across extended product lifecycles.
Supply support for 7025S20G 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 solutions for communications, computing, and industrial markets.
The IDT7025 family was designed specifically for deterministic, low-latency inter-processor communication in real-time embedded systems - delivering hardware-enforced memory coherency without software overhead or external arbitration components.
FAQ
What is the maximum operating temperature range for the 7025S20G?
The 7025S20G is rated for industrial temperature operation from –40°C to +85°C, as confirmed in the DC Operating Conditions table (Table 5) and validated across all AC timing parameters at this range. This makes it suitable for deployment in factory automation, motor drives, and outdoor telecom equipment without derating.
Does the 7025S20G support battery backup data retention?
No - battery backup data retention at 2V is specified only for the IDT7025L variant (low-power version). The 7025S20G is the standard-power version with 5 mW typical standby current but does not guarantee data retention below 4.5V. Retention capability is explicitly limited to "L Version Only" in Table 10.
How does the BUSY arbitration mechanism work on the 7025S20G?
When M/S = H (Master), BUSYR outputs a high signal during address/contention conflicts to stall the slave port's write operation. When M/S = L (Slave), BUSYL is an input that must be monitored before initiating writes. The tBDD parameter (BUSY Disable to Valid Data) defines the delay from BUSY deassertion to valid read data, ensuring deterministic resolution.
Can the 7025S20G be used in a 32-bit data bus configuration?
Yes - the 7025S20G supports 32-bit expansion via MASTER/SLAVE cascading. Two devices are connected with M/S = H on the master and M/S = L on the slave; BUSYR from master feeds BUSYL on slave, and CE/UB/LB controls are coordinated to enable interleaved or contiguous addressing without external logic.
What is the meaning of the 'G' suffix in 7025S20G?
The 'G' suffix in 7025S20G denotes the 84-pin PLCC package variant per IDT's ordering information. It distinguishes this version from other packages including 84-pin PGA (7025S20GP), 84-pin Flatpack (7025S20GF), and 100-pin TQFP (7025S20P). All share identical electrical and timing specifications.
7025S20G 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)
7025S20G FAQ
1.How can I place an order for 7025S20G through Aetrix?
Please submit a Request for Quotation (RFQ) for 7025S20G 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 7025S20G reliable?
The price and inventory of 7025S20G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7025S20G is usually 5 days.
3.What payment methods are accepted for 7025S20G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7025S20G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7025S20G?
7025S20G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7025S20G 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 7025S20G?
For technical support, including 7025S20G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7025S20G requirements.
6.How does Aetrix verify that 7025S20G is sourced from the original manufacturer or authorized distributors?
All 7025S20G 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 7025S20G meets industry standards.
7.What is the process for return or replacement of 7025S20G?
All 7025S20G units undergo pre-shipment inspection (PSI). If there is an issue with 7025S20G, 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 7025S20G part is unused and in its original packaging.
Return procedure for 7025S20G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7025S20G Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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