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Renesas 7008S20PFI8
- Part No.:
- 7008S20PFI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7008S20PFI8.pdf
- Description:
- IC SRAM 512KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,276
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Product details
Overview
IDT7008S20PFI8 from Integrated Device Technology (IDT) is a high-speed 64K × 8 true dual-port static RAM with independent left/right ports, 20 ns max access time (industrial grade), TTL-compatible 5V ±10% operation, and integrated semaphore/arbiter logic for inter-processor communication in real-time embedded systems.
For engineers reviewing the IDT7008S20PFI8 datasheet, IDT7008S20PFI8 pinout, IDT7008S20PFI8 application, or IDT7008S20PFI8 equivalent, key selection criteria include BUSY arbitration timing (tBDD ≤ 20 ns), dual chip-enable depth expansion capability, M/S-selectable master/slave configuration, and industrial temperature support (–40°C to +85°C) in 100-pin TQFP.
Technical Context
The IDT7008S20PFI8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port-enabling simultaneous read/write operations to the same memory location. Its on-chip arbitration logic resolves port contention via push-pull BUSY flags and supports both address-match and CE-controlled arbitration modes.
It integrates eight hardware semaphores addressed by A0–A2, accessible only when CE = VIH and SEM = VIL, with write-to-I/O0/read-from-all-I/Os protocol. Interrupt signaling uses dedicated FFFEH (left) and FFFFH (right) mailbox addresses, requiring no external logic for inter-processor flagging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 8 bits (512 Kbit), fully random-access SRAM array with true dual-port cell structure |
| Access Time (max) | 20 ns - guarantees worst-case read latency under industrial conditions (–40°C to +85°C, VCC = 4.5–5.5 V) |
| Operating Voltage | 5.0 V ±10% - single-supply TTL-compatible interface eliminates level-shifting requirements |
| Standby Current (ISB3) | 0.2 mA (typ.) - ultra-low full-standby power when both ports disabled with CMOS-level inputs |
| Bus Width Support | 16-bit+ via Master/Slave cascading - M/S pin configures BUSY as output (master) or input (slave) for seamless depth expansion |
| Temperature Range | –40°C to +85°C - qualified for industrial-grade reliability without derating |
| Package | 100-pin TQFP (14 mm × 14 mm × 1.4 mm) - RoHS-compliant, surface-mount, thermal-performance optimized |
Pinout & Package
Package: 100-pin Thin Quad Flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A15L | Left port address inputs | 16-bit address bus for independent left-side memory access; no internal latching |
| A0R–A15R | Right port address inputs | 16-bit address bus for independent right-side memory access; fully asynchronous with left port |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; direction controlled by R/WL and OEL; high-impedance when deselected |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit data path; direction controlled by R/WR and OER; electrically isolated from left I/O |
| CE0L, CE1L | Left port chip enables | Dual enables allow depth expansion without external logic; CE1L enables standby mode when CE0L inactive |
| CE0R, CE1R | Right port chip enables | Same dual-enable logic as left port; supports independent power gating per port |
| R/WL, R/WR | Read/write control | Active-low signals defining memory operation direction; must be HIGH during address transitions |
| OEL, OER | Output enable | Controls I/O drivers' output state; outputs go high-Z when OE = HIGH regardless of CE/R/W state |
| SEML, SEMR | Semaphore enable | Activates semaphore register access (A0–A2 address space); requires CE = VIH, SEM = VIL |
| INTL, INTR | Interrupt flags | Open-drain compatible (push-pull), asserted when opposite port writes to FFFEH/FFFFH |
| BUSYL, BUSYR | Arbitration flags | Push-pull outputs (master) or inputs (slave); inhibit writes during contention; tBDD ≤ 20 ns ensures deterministic resolution |
| M/S | Master/Slave select | M/S = VIH → BUSY pins are outputs; M/S = VIL → BUSY pins are inputs for cascaded slave operation |
| VCC, GND | Power supply | Multiple VCC/GND pins distributed across package for low-noise, stable rail delivery; all must be connected |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables simultaneous reads from same address on both ports-no internal contention or delay penalties |
| Hardware semaphore logic | Eight dedicated flags accessed via A0–A2; write via I/O0, read via all I/Os-eliminates software polling overhead |
| Automatic power-down control | Dual CE0/CE1 per port enables granular standby: ISB3 = 0.2 mA (typ.) with CMOS-level inputs |
| Master/Slave cascading | M/S pin configures BUSY as output (master) or input (slave), enabling error-free 16-bit+ word systems without glue logic |
| Industrial temperature qualification | –40°C to +85°C operation verified across full voltage range (4.5–5.5 V) and speed grade (20 ns max) |
Applications
| Real-Time Industrial PLC | Dual-Core Communication Buffer |
|---|---|
|
Use Scenario: Two independent CPU cores (e.g., ARM Cortex-M7 + RISC-V) share sensor data and control commands in a programmable logic controller. IC Role / Device Role / Timing Role: IDT7008S20PFI8 serves as a lock-free shared memory buffer with hardware semaphore arbitration to prevent race conditions during concurrent access. Use Value: Eliminates need for external arbitration logic or software mutexes; tBDD ≤ 20 ns ensures deterministic response under worst-case industrial temperature and voltage. |
Use Scenario: High-throughput data exchange between host processor and FPGA-based co-processor in motor drive control. IC Role / Device Role / Timing Role: IDT7008S20PFI8 acts as a 64KB dual-port FIFO with interrupt-driven mailbox (FFFEH/FFFFH) for command/status handshaking. Use Value: Enables zero-wait-state transfers at 50 MHz system clock; interrupt flags reduce polling overhead by >90% versus polling-based schemes. |
| Redundant Avionics Subsystem | Test Equipment Data Capture |
|
Use Scenario: Fault-tolerant flight control unit with primary and backup processors synchronizing state via shared memory. IC Role / Device Role / Timing Role: IDT7008S20PFI8 operates in Master/Slave configuration: primary (M/S = VIH) asserts BUSY to block backup writes during critical updates. Use Value: Hardware-enforced atomicity prevents partial writes; industrial temp rating ensures reliability across aircraft operational envelope (–55°C to +85°C). |
Use Scenario: Automated test equipment capturing high-speed analog waveform data from multiple channels into shared memory. IC Role / Device Role / Timing Role: IDT7008S20PFI8 provides parallel access: ADC controller writes via right port while host CPU reads via left port at 20 ns latency. Use Value: Sustains 50 MB/s sustained bandwidth (8-byte × 50 MHz) without DMA bottlenecks; low active power (750 mW typ.) reduces thermal load in dense instrument racks. |
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 | 20 ns access, 64K × 16 organization, 100-pin TQFP, but requires external logic for 8-bit bus alignment and lacks integrated semaphore logic | Requires additional gates for byte-lane control and software-managed semaphores-increases BOM count and firmware complexity | Choose when 16-bit data path is mandatory and arbitration can be handled in software or external logic |
| AS7C364B-20TIN | 20 ns access, 64K × 8, 100-pin TQFP, but single-port only with no BUSY/SEM/INT logic-no hardware arbitration capability | Cannot support simultaneous dual-CPU access without external arbiter IC or time-slicing firmware | Choose only for cost-sensitive, non-concurrent applications where inter-processor coordination is unnecessary |
Compared with CY7C028V-20AXC and AS7C364B-20TIN, the IDT7008S20PFI8 delivers integrated hardware arbitration (BUSY/SEM/INT), true 8-bit dual-port concurrency, and industrial temperature support in a drop-in 100-pin TQFP-reducing design risk and validation effort for real-time embedded systems.
Availability
IDT7008S20PFI8 is available at Aetrix Electronics and suitable for real-time industrial PLCs, dual-core communication buffers, redundant avionics subsystems, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for IDT7008S20PFI8 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) is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor signal conditioning solutions for communications, computing, and industrial markets.
The IDT7008S20PFI8 belongs to IDT's high-speed dual-port SRAM product line, designed specifically for deterministic inter-processor communication in hard real-time embedded systems where hardware arbitration and low-latency memory access are critical.
FAQ
What is the maximum operating temperature range for the IDT7008S20PFI8?
The IDT7008S20PFI8 is rated for industrial temperature operation from –40°C to +85°C. This range is validated across all electrical specifications including 20 ns access time, standby current (ISB3 = 0.2 mA typ.), and BUSY arbitration timing (tBDD ≤ 20 ns), ensuring reliable performance in harsh environments without derating.
Does the IDT7008S20PFI8 support true simultaneous read operations from both ports to the same memory address?
Yes, the IDT7008S20PFI8 uses true dual-port SRAM cells that permit concurrent reads from identical addresses on the left and right ports with no timing penalty or internal contention-verified in the functional description and truth tables of the official datasheet.
How does the M/S pin affect BUSY signal behavior in the IDT7008S20PFI8?
When M/S = VIH, BUSYL and BUSYR operate as push-pull outputs indicating port contention; when M/S = VIL, they become inputs allowing the device to function as a slave in cascaded configurations. This dual-mode behavior is fundamental to the IDT7008S20PFI8's Master/Slave expansion capability.
What package type is used for the IDT7008S20PFI8, and what are its mechanical dimensions?
The IDT7008S20PFI8 is packaged in a 100-pin Thin Quad Flatpack (TQFP) with body dimensions of 14 mm × 14 mm × 1.4 mm and 0.5 mm lead pitch. Pin layout matches the PNG100 package code defined in the official IDT documentation.
Can the IDT7008S20PFI8 be used for semaphore-based resource locking without external microcontroller intervention?
Yes-the IDT7008S20PFI8 includes eight hardware semaphores addressed by A0–A2, writable via I/O0 and readable across all I/O lines. This allows autonomous, cycle-accurate resource locking between processors without firmware involvement or polling overhead.
7008S20PFI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 512Kbit
- Memory Organization:
- 64K x 8
- 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:
- 100-TQFP (14x14)
7008S20PFI8 FAQ
1.How can I place an order for 7008S20PFI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7008S20PFI8 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 7008S20PFI8 reliable?
The price and inventory of 7008S20PFI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7008S20PFI8 is usually 5 days.
3.What payment methods are accepted for 7008S20PFI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7008S20PFI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7008S20PFI8?
7008S20PFI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7008S20PFI8 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 7008S20PFI8?
For technical support, including 7008S20PFI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7008S20PFI8 requirements.
6.How does Aetrix verify that 7008S20PFI8 is sourced from the original manufacturer or authorized distributors?
All 7008S20PFI8 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 7008S20PFI8 meets industry standards.
7.What is the process for return or replacement of 7008S20PFI8?
All 7008S20PFI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7008S20PFI8, 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 7008S20PFI8 part is unused and in its original packaging.
Return procedure for 7008S20PFI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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