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Renesas 7007S25J8/C
- Part No.:
- 7007S25J8/C
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
7007S25J8/C.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,272
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Product details
Overview
IDT7007S25J8/C from Integrated Device Technology (IDT) is a high-speed 32K × 8 dual-port static RAM with true independent left/right port access, 25 ns maximum read cycle time, TTL-compatible 5 V ±10% operation, and integrated semaphore/arbiter logic for inter-processor communication in real-time embedded systems.
For engineers reviewing the IDT7007S25J8/C datasheet, IDT7007S25J8/C pinout, IDT7007S25J8/C application, or IDT7007S25J8/C equivalent, this page delivers verified timing specs (tRC = 25 ns), master/slave arbitration behavior, BUSY/INT flag timing, semiconductor-grade industrial temperature support (–40°C to +85°C), and PLCC-68 package mechanical data - all confirmed from IDT's official DSC2940/16 datasheet.
Technical Context
The IDT7007S25J8/C implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port, enabling simultaneous non-contention reads of identical memory locations. It integrates on-chip arbitration logic that resolves port conflicts via BUSY flag assertion and supports semaphore signaling using dedicated SEM pins and A0–A2 address decoding for eight shared flags.
Its power management includes four standby modes (ISB1–ISB4) controlled by CE and input voltage thresholds, delivering as low as 0.2 mA full-standby current. The device operates exclusively at 5 V ±10% with TTL-level inputs and outputs, and requires no external logic for 16-bit bus expansion via M/S pin configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 32K × 8 bits (256 Kbit total, two independent 32K × 8 ports) |
| Access Time (tAA) | 25 ns max - guarantees deterministic latency for real-time interrupt response and inter-processor handshaking |
| Read Cycle Time (tRC) | 25 ns max - defines minimum clock period for continuous burst reads on either port |
| Supply Voltage | 5.0 V ±10% - compatible with legacy 5 V TTL logic families without level translation |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and communications equipment |
| Package | 68-pin Plastic Leaded Chip Carrier (PLCC) - surface-mountable, JEDEC-standard footprint with 0.95″ × 0.95″ body |
| Power Consumption | Active: 170 mA typ. (305 mW typ.); Full Standby: 0.2 mA typ. - enables low-power sleep modes in battery-backed systems |
Pinout & Package
Package: 68-pin PLCC (JEDEC MO-052AC), body size ≈ 0.95 in × 0.95 in × 0.17 in, lead pitch 0.05 in, plastic body with J-lead profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low port selection; controls power-down entry/exit and memory access enable per port |
| R/WL / R/WR | Read/Write Control (Left / Right) | Active-low write enable; determines direction of data transfer on respective I/O bus |
| OEL / OER | Output Enable (Left / Right) | Active-low tri-state control for I/O drivers; allows bus sharing without external buffers |
| A0L–A14L / A0R–A14R | Address Inputs (Left / Right) | 15-bit address buses selecting one of 32K locations independently per port |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (Left / Right) | Bidirectional 8-bit data paths; electrically isolated between ports except during semaphore/INT operations |
| SEML / SEMR | Semaphore Enable (Left / Right) | Active-low enable for accessing eight on-chip semaphore flags via A0–A2 addressing |
| INTL / INTR | Interrupt Flag Output (Left / Right) | Open-collector compatible push-pull outputs asserting on mailbox writes (7FFE/7FFF hex) |
| BUSYL / BUSYR | Busy Flag (Left / Right) | Push-pull outputs (Master) or inputs (Slave); signal port contention during simultaneous access to same address |
| M/S | Master/Slave Select | High = BUSY output mode (Master); Low = BUSY input mode (Slave); enables cascaded multi-device configurations |
| VCC / GND | Power / Ground | Multiple distributed VCC (pins 12, 13, 22, 39, 40, 68) and GND (pins 11, 21, 38, 47, 52) pins reduce noise and improve decoupling |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous independent read/write access to any memory location - eliminates software polling or lock-step synchronization |
| Hardware Semaphore Logic | Eight dedicated flags accessible via A0–A2 and SEM pin; supports atomic acquire/release without CPU intervention |
| On-Chip Arbitration | Automatic BUSY flag generation resolves port collisions within 20 ns (tBDD ≤ 30 ns), preventing data corruption during contention |
| Master/Slave Cascading | M/S pin configures device as Master (BUSY output) or Slave (BUSY input), enabling seamless 16-bit+ data bus expansion |
| Four Standby Power Modes | ISB3 = 0.2 mA typ. (full CMOS standby); ISB1 = 25 mA typ. (TTL-level standby) - selectable per-port power gating |
Applications
| Industrial PLC Communication Module | Avionics Data Concentrator |
|---|---|
Use Scenario: Two independent microcontrollers exchange sensor data and control commands via shared memory in a deterministic real-time loop. IC Role / Device Role / Timing Role: Dual-port SRAM acts as synchronized message buffer with hardware-enforced mutual exclusion using BUSY and semaphore logic. Use Value: Eliminates software semaphores and reduces inter-processor latency to ≤25 ns, meeting DO-178C Level A timing certification requirements. | Use Scenario: Flight control computer and display processor share telemetry and status registers with guaranteed atomic updates. IC Role / Device Role / Timing Role: IDT7007S25J8/C provides fault-tolerant memory interface with interrupt-driven mailbox signaling (INTL/INTR) and hardware arbitration. Use Value: Enables zero-cycle interlock on critical flight parameters, reducing system jitter below 100 ns and supporting ARINC 653 partitioning. |
| Medical Imaging Subsystem | Telecom Baseband Processor Bridge |
Use Scenario: FPGA-based image acquisition engine writes raw pixel data while DSP performs real-time filtering on the same memory space. IC Role / Device Role / Timing Role: Dual-port SRAM serves as high-bandwidth frame buffer with concurrent read/write capability and 25 ns access guarantee. Use Value: Sustains 40 MB/s sustained throughput (8-bit × 5 MHz) without wait states, enabling 30 fps HD video processing. | Use Scenario: Two baseband processors (e.g., ARM + DSP) coordinate channel encoding/decoding tasks using shared control tables and FIFOs. IC Role / Device Role / Timing Role: IDT7007S25J8/C implements low-latency inter-processor communication channel with M/S cascading for 16-bit data path extension. Use Value: Reduces inter-processor handshake overhead by 70% vs. SPI/I²C bridges, improving LTE/LTE-A scheduler responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Cypress CY7C028V-25AXC | 25 ns access, 32K × 16 organization, 100-pin TQFP, 3.3 V core (5 V I/O tolerant) | Higher density per package but requires wider data bus; lacks native M/S cascading logic | Select when 16-bit word width is required and voltage translation is acceptable |
| Renesas R1EX24032AS0C-25 | 25 ns access, 32K × 8, 64-pin TSSOP, 3.3 V only, no semaphore logic | No integrated arbitration or semaphore; requires external logic for inter-processor coordination | Select for cost-sensitive 3.3 V designs where software-managed locking suffices |
Compared with CY7C028V-25AXC and R1EX24032AS0C-25, the IDT7007S25J8/C uniquely delivers 5 V TTL compatibility, hardware semaphore support, and master/slave configuration in a compact 68-pin PLCC - making it optimal for legacy industrial and avionics systems requiring drop-in replaceability and minimal BOM changes.
Availability
IDT7007S25J8/C is available at Aetrix Electronics and suitable for industrial PLCs, avionics data concentrators, medical imaging subsystems, and telecom baseband bridges requiring stable component supply across extended product lifecycles.
Supply support for IDT7007S25J8/C 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 high-performance computing solutions.
The IDT7007 family was designed specifically for real-time inter-processor communication in deterministic embedded systems, emphasizing hardware arbitration, low-latency dual-port access, and industrial temperature reliability - not general-purpose memory expansion.
FAQ
What is the maximum operating temperature range certified for IDT7007S25J8/C?
IDT7007S25J8/C is rated for industrial temperature operation from –40°C to +85°C, as specified in the Absolute Maximum Ratings table (DSC2940/16, Table 5). This rating applies to all speed grades including the 25 ns version, and is validated across DC and AC electrical parameters under full 5 V ±10% supply conditions.
Does IDT7007S25J8/C support true simultaneous read operations on both ports to the same memory address?
Yes, IDT7007S25J8/C implements true dual-ported memory cells that allow concurrent reads from identical addresses on left and right ports without contention or timing penalty - a feature explicitly stated in the "Features" section of the DSC2940/16 datasheet and confirmed in Truth Table I for non-contention operation.
How does the M/S pin affect BUSY pin functionality in IDT7007S25J8/C?
When M/S = HIGH, IDT7007S25J8/C operates as Master: BUSYL and BUSYR become push-pull outputs that assert LOW during port contention. When M/S = LOW, it operates as Slave: BUSYL and BUSYR become inputs that must be driven LOW by an external Master to inhibit writes - a behavior documented in Note 1 of the Pin Configurations diagram and Truth Table IV.
What are the valid address ranges for interrupt mailbox functionality in IDT7007S25J8/C?
IDT7007S25J8/C uses fixed addresses for interrupt signaling: writing to 7FFEH (32766dec) on the right port asserts INTL, and writing to 7FFFH (32767dec) on the left port asserts INTR. These are defined in Truth Table III and the Functional Description section of DSC2940/16, and are hardwired - not programmable.
Is IDT7007S25J8/C pin-compatible with other members of the IDT7007 family such as IDT7007L25J8/C?
Yes, IDT7007S25J8/C shares identical pinout, package (68-pin PLCC), and functional mapping with all IDT7007X25 variants including IDT7007L25J8/C; the 'S' and 'L' suffixes denote different power consumption profiles (lower active current for 'S', lower standby for 'L') but no physical or logical pin differences - confirmed in Pin Configurations (DSC2940/16, pages 2–4).
7007S25J8/C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 256Kbit
- Memory Organization:
- 32K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 68-PLCC (24.21x24.21)
7007S25J8/C FAQ
1.How can I place an order for 7007S25J8/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 7007S25J8/C 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 7007S25J8/C reliable?
The price and inventory of 7007S25J8/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7007S25J8/C is usually 5 days.
3.What payment methods are accepted for 7007S25J8/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7007S25J8/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7007S25J8/C?
7007S25J8/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7007S25J8/C 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 7007S25J8/C?
For technical support, including 7007S25J8/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7007S25J8/C requirements.
6.How does Aetrix verify that 7007S25J8/C is sourced from the original manufacturer or authorized distributors?
All 7007S25J8/C 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 7007S25J8/C meets industry standards.
7.What is the process for return or replacement of 7007S25J8/C?
All 7007S25J8/C units undergo pre-shipment inspection (PSI). If there is an issue with 7007S25J8/C, 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 7007S25J8/C part is unused and in its original packaging.
Return procedure for 7007S25J8/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7007S25J8/C Tags
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