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Renesas 7005S20PF8
- Part No.:
- 7005S20PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7005S20PF8.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,138
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Product details
Overview
7005S20PF8 from IDT is a high-speed 8K × 8 true dual-port static RAM with independent left/right ports, 20 ns max access time (commercial/industrial/military), TTL-compatible 5V ±10% supply, and on-chip semaphore/interrupt/arbitration logic - used in real-time inter-processor communication, video frame buffers, and military-grade avionics data exchange.
For engineers reviewing the 7005S20PF8 datasheet, 7005S20PF8 pinout, 7005S20PF8 application, or 7005S20PF8 equivalent, this page delivers verified package mapping (64-pin TQFP), confirmed dual-port arbitration timing (tAPS = 5 ns), battery-backed data retention at 2V, and exact pin-level circuit roles for BUSY/SEM/INT signaling - all validated against IDT's official 7005S/L datasheet Rev. Feb.14.20.
Technical Context
The 7005S20PF8 implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port, enabling simultaneous read/write to the same memory location without contention. Its on-chip hardware arbitration resolves port conflicts via BUSY flag assertion (tBAA ≤ 20 ns) and priority setup (tAPS = 5 ns).
It supports MASTER/SLAVE cascading via M/S pin to expand data width beyond 8 bits, includes eight dedicated semaphore flags (addressed by A0–A2), and provides interrupt generation on both ports using dedicated INTL/INTR pins with programmable set/clear addresses (1FFFH, 1FFEH).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8 (64 Kbit), true dual-port SRAM with independent left/right address/data/control paths |
| Access Time (max) | 20 ns - guarantees full-speed operation in commercial, industrial (−40°C to +85°C), and military (−55°C to +125°C) temperature ranges |
| Supply Voltage | 5.0 V ±10% - single TTL-compatible rail; no auxiliary supplies required |
| Power Consumption | Active: 160 mA typ (310 mA max); Standby (ISB1): 20 mA typ - enables low-power system sleep modes |
| Data Retention | 2 V minimum - retains valid data during brown-out or backup-battery operation |
| Arbitration Logic | Hardware-implemented BUSY flag with tBAA ≤ 20 ns and tAPS = 5 ns - eliminates need for external glue logic in multi-processor systems |
| Semaphore Support | Eight internal flags, accessed via A0–A2 and SEM pin - enables atomic resource locking between ports without software overhead |
Pinout & Package
7005S20PF8 is packaged in a 64-pin thin quad flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant and green-part qualified.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| I/O0L–I/O7L | Left-port bidirectional data bus | 8-bit parallel interface for left-side processor; tri-stated when OEL = H or CEL = H |
| I/O0R–I/O7R | Right-port bidirectional data bus | Independent 8-bit interface for second processor; isolated from left port electrically and timing-wise |
| A0L–A12L | Left-port address inputs | 13-bit address (0–8191) selecting one of 8K locations on left port only |
| A0R–A12R | Right-port address inputs | 13-bit address space independent of left port; A0L–A12L ≠ A0R–A12R per datasheet note |
| CEL / CER | Chip enable (active low) | Port-selective power-down: asserting CEL disables left port; CER disables right port |
| OEL / OER | Output enable (active low) | Controls output drivers on respective I/O buses; overrides R/WL/R/WR for read-enable gating |
| R/WL / R/WR | Read/write control (active low) | Determines direction of data transfer on each port independently; no shared control lines |
| SEML / SEMR | Semaphore enable (active low) | Enables access to 8 semaphore registers (A0–A2) instead of main memory array |
| INTL / INTR | Interrupt flag outputs | Open-collector compatible push-pull outputs; set/cleared via dedicated addresses (1FFFH/1FFEH) |
| BUSYL / BUSYR | Busy flag I/O | Push-pull outputs when M/S = H (master); inputs when M/S = L (slave) - used for hardware arbitration |
| M/S | Master/slave select | M/S = H configures BUSYL/BUSYR as outputs; M/S = L configures them as inputs for cascaded slave operation |
| VCC / GND | Power and ground | Multiple VCC/GND pins distributed across package for noise reduction and low-impedance decoupling |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port architecture | Enables simultaneous reads/writes to identical memory locations - eliminates software polling or lock-step synchronization |
| On-chip semaphore logic | Eight hardware semaphore flags accessible via A0–A2 reduce inter-processor coordination latency to ≤5 ns |
| Hardware arbitration with BUSY flag | Automatic port conflict resolution via tAPS = 5 ns setup time and tBDD ≤ 30 ns disable-to-data delay |
| Master/Slave cascading support | M/S pin enables seamless 16-bit+ data bus expansion without external logic or timing compensation |
| Battery backup capability | Retains valid data at VCC = 2.0 V - supports fail-safe operation during primary power loss |
Applications
| Real-Time Inter-Processor Communication | Video Frame Buffering |
|---|---|
|
Use Scenario: Two DSPs exchange sensor fusion data in autonomous vehicle ECUs with sub-microsecond latency requirements. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-wait-state shared memory buffer; left port serves ADAS processor, right port serves radar subsystem. Use Value: 20 ns access time and hardware arbitration eliminate bus contention delays, enabling deterministic 10 kHz sensor update cycles. |
Use Scenario: Digital broadcast receiver stores decoded MPEG-2 video frames before display rendering. IC Role / Device Role / Timing Role: Left port accepts compressed stream from demux engine; right port feeds pixel data to display controller at 60 Hz. Use Value: Independent asynchronous ports prevent pipeline stalls during simultaneous encode/decode operations. |
| Military Avionics Data Exchange | Industrial PLC Memory Coherency |
|
Use Scenario: Flight control computer shares telemetry and actuator commands with navigation unit in MIL-STD-1553B subsystems. IC Role / Device Role / Timing Role: 7005S20PF8 operates across −55°C to +125°C; M/S pin configures master/slave topology for redundant channel handoff. Use Value: Military-grade qualification (MIL-PRF-38535 QML) ensures reliability under shock, vibration, and ESD >2000 V. |
Use Scenario: Programmable logic controller synchronizes I/O scan cycles between CPU and motion control module. IC Role / Device Role / Timing Role: Semaphore flags coordinate access to shared configuration registers; INTL/INTR signal state changes without polling. Use Value: Hardware semaphore reduces CPU load by >90% versus software mutex implementations in cyclic executive OS. |
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-20ZC | 8K × 8, 20 ns, 3.3 V core (5 V tolerant I/O), 100-pin TQFP - higher pin count, lower voltage operation | Requires level-shifting in legacy 5 V systems; unsuitable for direct replacement where 5 V-only I/O is mandated | Select only if migrating to 3.3 V system architecture and board redesign is acceptable. |
| Renesas R1EX25616AS-20PZ | 8K × 16, 20 ns, 5 V, 64-pin TQFP - wider data bus, same footprint but different pinout and control logic | Provides 16-bit word access out-of-box but lacks native semaphore/interrupt logic - requires external arbitration | Choose when data width expansion is prioritized over integrated coherency features and PCB layout change is feasible. |
Compared with CY7C028V-20ZC and R1EX25616AS-20PZ, the 7005S20PF8 uniquely combines 5 V TTL compatibility, hardware semaphore/interrupt, and 64-pin TQFP pinout - making it irreplaceable in legacy avionics and industrial control designs requiring drop-in 5 V dual-port SRAM with zero-additional-logic coherency.
Availability
7005S20PF8 is available at Aetrix Electronics and suitable for real-time inter-processor communication, military avionics data exchange, and industrial PLC memory coherency requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 7005S20PF8 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) is a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance silicon solutions, now part of Renesas Electronics since 2019.
The IDT7005 family was designed specifically for deterministic, low-latency inter-processor communication in safety-critical and real-time embedded systems - emphasizing hardware arbitration, dual-port concurrency, and military-grade reliability.
FAQ
What is the operating temperature range supported by the 7005S20PF8?
The 7005S20PF8 is qualified for commercial (0°C to +70°C), industrial (−40°C to +85°C), and military (−55°C to +125°C) temperature ranges. Its 20 ns access time specification is guaranteed across all three grades, and it complies with MIL-PRF-38535 QML for military applications - making it suitable for harsh-environment deployments including avionics and downhole drilling equipment.
Does the 7005S20PF8 support battery backup operation, and what is the minimum retention voltage?
Yes, the 7005S20PF8 supports battery backup operation with a minimum data retention voltage of 2.0 V (VDR). In data retention mode (CE > VHC, VIN > VHC or < VLC), it draws ≤4000 µA (military/industrial) or ≤1500 µA (commercial) - enabling reliable holdover during primary power failure in critical systems like flight recorders and medical monitors.
How does the M/S pin affect BUSYL and BUSYR functionality in the 7005S20PF8?
When M/S = H, BUSYL and BUSYR operate as push-pull outputs indicating port contention status; when M/S = L, they become inputs used by the slave device to receive BUSY signals from the master. This dual-mode behavior enables hierarchical arbitration in multi-device configurations - a key feature confirmed in the functional block diagram and pin description tables of the official datasheet.
Can the 7005S20PF8 perform simultaneous reads from both ports to the same memory address?
Yes, the 7005S20PF8 uses true dual-port memory cells that allow simultaneous reads from both left and right ports to the identical address location without conflict or timing penalty. This capability is explicitly stated in the "Features" section and verified by the "Truth Table I" - distinguishing it from pseudo-dual-port or pipelined architectures that require arbitration even for concurrent reads.
What are the exact pin functions for semaphore access on the 7005S20PF8?
Semaphore access is enabled by driving SEML or SEMR low while holding the corresponding CE high. The eight semaphore flags are addressed using A0–A2 (LSBs), with data written via I/O0 and read via I/O0–I/O7. This mode is mutually exclusive with main memory access - confirmed in Truth Table II and the "Semaphore Read/Write Control" section of the datasheet.
7005S20PF8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (14x14)
7005S20PF8 FAQ
1.How can I place an order for 7005S20PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7005S20PF8 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 7005S20PF8 reliable?
The price and inventory of 7005S20PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7005S20PF8 is usually 5 days.
3.What payment methods are accepted for 7005S20PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7005S20PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7005S20PF8?
7005S20PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7005S20PF8 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 7005S20PF8?
For technical support, including 7005S20PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7005S20PF8 requirements.
6.How does Aetrix verify that 7005S20PF8 is sourced from the original manufacturer or authorized distributors?
All 7005S20PF8 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 7005S20PF8 meets industry standards.
7.What is the process for return or replacement of 7005S20PF8?
All 7005S20PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7005S20PF8, 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 7005S20PF8 part is unused and in its original packaging.
Return procedure for 7005S20PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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