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Renesas 7007S15PF8
- Part No.:
- 7007S15PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 80-LQFP
- Datasheet:
-
7007S15PF8.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 80TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,811
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Product details
Overview
7007S15PF8 from IDT (Integrated Device Technology) is a high-speed 32K × 8 true dual-port static RAM with independent left/right ports, 15 ns maximum access time (commercial grade), TTL-compatible 5 V ±10% operation, and integrated hardware semaphore and interrupt logic - used in real-time inter-processor communication systems such as industrial PLCs and telecom line cards.
For engineers reviewing the 7007S15PF8 datasheet, 7007S15PF8 pinout, 7007S15PF8 application, or 7007S15PF8 equivalent, key selection considerations include port arbitration timing (tAPS = 5 ns), BUSY flag behavior under M/S configuration, dual-port contention resolution, and low-power standby modes (ISB3 = 0.2 mA typ.) for embedded control subsystems.
Technical Context
The 7007S15PF8 implements fully asynchronous dual-port architecture with separate address, data, and control buses per port - enabling simultaneous read/write to the same memory location only when no address contention occurs. Its on-chip arbitration logic resolves port conflicts via BUSY signaling, with priority determined by tAPS setup time and M/S pin state.
It supports two distinct memory access modes: RAM mode (CE = LOW, SEM = HIGH) and semaphore mode (CE = HIGH, SEM = LOW), each with dedicated timing parameters (e.g., tSAA ≤ 15 ns for semaphore access). The device uses CMOS process technology and requires no external logic for MASTER/SLAVE cascading in 16-bit+ systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 32K × 8 bits (256 Kbit total); enables byte-wide parallel data exchange between two independent processors |
| Access Time (tAA) | 15 ns max (commercial temp range); guarantees deterministic latency for hard real-time inter-processor messaging |
| Supply Voltage | 5.0 V ±10%; compatible with legacy 5 V TTL logic families without level-shifting circuitry |
| Standby Current (ISB3) | 0.2 mA typical (full standby, CMOS inputs); reduces power in idle inter-processor handshake states |
| Arbitration Setup (tAPS) | 5 ns minimum; defines minimum time before address stability to ensure deterministic BUSY flag assertion order |
| Port-to-Port Delay (tDDD) | 25 ns max; bounds worst-case latency from write on one port to valid read on the other port |
| Operating Temperature | 0°C to +70°C (commercial grade); validated for use in non-extended-environment industrial control panels |
Pinout & Package
7007S15PF8 is packaged in an 80-pin thin quad flatpack (TQFP) with 0.5 mm pitch, body size 14 mm × 14 mm × 1.4 mm. All VCC pins require local decoupling; all GND pins must be connected to system ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A14L | Left port address inputs | 15-bit address bus for left-side processor access to full 32K memory space |
| A0R–A14R | Right port address inputs | Independent 15-bit address bus enabling concurrent right-side memory access |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path supporting simultaneous read/write with right port (no bus contention) |
| I/O0R–I/O7R | Right port bidirectional data | Isolated 8-bit data path; no shared bus lines with left port |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; drives internal power-down when HIGH |
| R/WL / R/WR | Read/write control (left/right) | Active-low write enable; HIGH = read, LOW = write; controls direction of I/O drivers |
| OEL / OER | Output enable (left/right) | Active-low enables output drivers; allows high-impedance tri-state during bus sharing |
| SEML / SEMR | Semaphore enable (left/right) | Active-low selects semaphore register bank (A0–A2 addressed) instead of main RAM array |
| INTL / INTR | Interrupt flags (left/right) | Open-collector compatible push-pull outputs asserting on mailbox writes (7FFE/7FFF hex) |
| BUSYL / BUSYR | Busy flags (left/right) | Push-pull outputs indicating port contention; MASTER: output; SLAVE: input (M/S pin controlled) |
| M/S | Master/Slave select | HIGH = BUSY outputs asserted; LOW = BUSY inputs accepted; enables daisy-chained arbitration |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables simultaneous reads from same location without arbitration delay - critical for status mirroring in redundant controllers |
| Hardware semaphore logic | Eight dedicated flags (A0–A2 addressable) accessed via CE=HIGH/SEM=LOW; eliminates need for software mutex polling |
| On-chip port arbitration | Automatic BUSY assertion resolves address-contention conflicts within 15 ns (tBAA), preventing data corruption during concurrent writes |
| Master/Slave cascading support | M/S pin configures device as MASTER (BUSY output) or SLAVE (BUSY input), enabling seamless expansion to 16-bit+ data paths |
| Dual-mode interrupt mailbox | Predefined addresses 7FFE (left INTL) and 7FFF (right INTR) serve as hardware-triggered message registers with user-defined payload |
Applications
| Industrial PLC Backplane Communication | Telecom Line Card Inter-Processor Messaging |
|---|---|
Use Scenario: Two microcontrollers exchange real-time I/O status and command packets across a shared memory interface within a programmable logic controller rack. IC Role / Device Role / Timing Role: 7007S15PF8 serves as deterministic, lock-free shared memory buffer with hardware arbitration - eliminating software semaphores and reducing inter-CPU latency. Use Value: 15 ns access time ensures sub-30 ns round-trip status update; BUSY logic prevents race conditions during simultaneous register updates. |
Use Scenario: A DSP and ARM host processor coordinate packet buffering and header parsing in a TDM-over-IP line card, requiring zero-copy data handoff. IC Role / Device Role / Timing Role: 7007S15PF8 acts as dual-access FIFO staging area with interrupt-driven mailbox signaling (7FFF/7FFE) for flow control. Use Value: Hardware semaphore flags reduce CPU polling overhead by >90%; 0.2 mA ISB3 enables low-power sleep between packet bursts. |
| Redundant Control System Failover Coordination | Automotive ADAS Sensor Fusion Hub |
Use Scenario: Active and standby safety controllers maintain synchronized state via mirrored memory regions, with automatic failover triggered by BUSY timeout or interrupt loss. IC Role / Device Role / Timing Role: 7007S15PF8 provides atomic read-modify-write capability through semaphore-controlled critical sections, ensuring state consistency during switchover. Use Value: tAPS = 5 ns guarantees deterministic arbitration priority; M/S pin enables master-slave hierarchy without external logic. |
Use Scenario: Camera, radar, and ultrasonic sensor processors write timestamped raw data into shared buffers for centralized fusion processing in autonomous driving ECUs. IC Role / Device Role / Timing Role: 7007S15PF8 functions as time-synchronized data aggregation point with independent port bandwidth - avoiding bus bottlenecks in multi-sensor ingestion. Use Value: 32K × 8 capacity supports ≥256 ms of fused sensor history at 1 kHz; 5 V operation matches legacy automotive MCU I/O voltage rails. |
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-15ZXC | 15 ns access, 32K × 8, 3.3 V core (5 V tolerant I/O), different pinout (100-pin TQFP), no native semaphore logic | Requires external logic or firmware for semaphore emulation; better suited for 3.3 V systems with higher density needs | Select if migrating to lower-voltage design and can implement arbitration in software or CPLD |
| Renesas R1EX24032AS0C-15#U0 | 15 ns access, 32K × 8, 5 V operation, 80-pin TQFP, includes JTAG debug interface but lacks BUSY arbitration and interrupt mailbox | No hardware BUSY or INT flags - relies on polling or external interrupt controller for coordination | Choose when debug visibility is prioritized over deterministic inter-processor signaling latency |
Compared with CY7C028V-15ZXC and R1EX24032AS0C-15#U0, the 7007S15PF8 uniquely integrates full hardware arbitration, semaphore registers, and interrupt mailboxes in a 5 V, pin-compatible 80-pin TQFP package - delivering lowest-latency, lowest-software-overhead dual-processor communication without external components.
Availability
7007S15PF8 is available at Aetrix Electronics and suitable for industrial PLC backplanes, telecom line cards, redundant control systems, and automotive ADAS sensor hubs requiring stable component supply, long-term lifecycle support, and guaranteed commercial-grade timing performance.
Supply support for 7007S15PF8 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance silicon solutions before its acquisition by Renesas Electronics in 2019.
The IDT7007 family was designed specifically for deterministic, low-latency inter-processor communication in real-time embedded systems - emphasizing hardware-accelerated arbitration, interrupt, and semaphore functionality to eliminate software coordination bottlenecks.
FAQ
What is the operating temperature range for the 7007S15PF8?
The 7007S15PF8 is rated for commercial temperature operation from 0°C to +70°C. This specification is confirmed in the Absolute Maximum Ratings table and DC Operating Conditions section of the official IDT datasheet DSC2940/16. It is not qualified for industrial (–40°C to +85°C) or military temperature ranges - those require suffix variants like 7007L20 or 7007M25.
Does the 7007S15PF8 support true simultaneous read/write to the same memory address?
Yes, the 7007S15PF8 supports true simultaneous reads from the same memory location on both ports. However, simultaneous writes to identical addresses are resolved via hardware arbitration: the port meeting tAPS setup time first asserts BUSY on the contending port, blocking its write. This behavior is explicitly documented in the Functional Block Diagram and Truth Table IV of the 7007S15PF8 datasheet.
How is semaphore functionality implemented in the 7007S15PF8?
Semaphore functionality in the 7007S15PF8 is implemented using eight dedicated hardware flag registers addressed by A0–A2, accessible only when CE = HIGH and SEM = LOW (per Truth Table II). Writing to I/O0 sets the flag; reading any I/O pin returns its state. This eliminates software polling and is fully independent of the main 32K × 8 RAM array - a feature confirmed in the Pin Names table and Functional Description section.
What is the purpose of the M/S pin on the 7007S15PF8?
The M/S (Master/Slave) pin configures arbitration behavior: when HIGH, BUSYL and BUSYR operate as push-pull outputs signaling contention to external devices; when LOW, they become inputs accepting BUSY signals from a master device. This enables hierarchical daisy-chaining of multiple 7007S15PF8 devices for wider data paths - a capability detailed in the Features list and Pin Configurations diagrams.
Can the 7007S15PF8 be used in a 3.3 V system?
No - the 7007S15PF8 requires a nominal 5.0 V ±10% supply (4.5 V to 5.5 V) and is TTL-compatible. Its input thresholds (VIH = 2.2 V min, VIL = 0.8 V max) and output drive levels (VOH = 2.4 V min, VOL = 0.4 V max) are specified only for 5 V operation. Using it with 3.3 V logic without level translation risks unreliable signaling and is outside datasheet specifications.
7007S15PF8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 80-LQFP
- 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:
- 15ns
- Access Time:
- 15 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 80-TQFP (14x14)
7007S15PF8 FAQ
1.How can I place an order for 7007S15PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7007S15PF8 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 7007S15PF8 reliable?
The price and inventory of 7007S15PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7007S15PF8 is usually 5 days.
3.What payment methods are accepted for 7007S15PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7007S15PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7007S15PF8?
7007S15PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7007S15PF8 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 7007S15PF8?
For technical support, including 7007S15PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7007S15PF8 requirements.
6.How does Aetrix verify that 7007S15PF8 is sourced from the original manufacturer or authorized distributors?
All 7007S15PF8 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 7007S15PF8 meets industry standards.
7.What is the process for return or replacement of 7007S15PF8?
All 7007S15PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7007S15PF8, 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 7007S15PF8 part is unused and in its original packaging.
Return procedure for 7007S15PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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