My Inquiry
My Account
Renesas 7005S20PFI
- Part No.:
- 7005S20PFI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7005S20PFI.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,733
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7005S20PFI from IDT is a high-speed 8K × 8 dual-port static RAM with true independent left/right ports, 20 ns max access time (industrial grade), TTL-compatible 5V ±10% supply, and on-chip semaphore/arbitration logic for inter-processor communication in real-time embedded systems.
For engineers reviewing the 7005S20PFI datasheet, 7005S20PFI pinout, 7005S20PFI application, or 7005S20PFI equivalent, this page delivers verified timing specs, master/slave BUSY arbitration behavior, semiconductor-level DC/AC electrical characteristics, and industrial-temperature dual-port memory integration guidance.
Technical Context
The 7005S20PFI implements fully asynchronous dual-port operation with separate address, data, and control lines per port (A0L–A12L/I/O0L–I/O7L/R/WL/CEL/OEL/BUSYL/SEML/INTL on left; symmetric right-side signals). It uses CMOS high-performance fabrication for 750 mW typical active power and 5 mW standby.
On-chip hardware supports semaphore flag access (8 flags via A0–A2), interrupt flag generation (INTL/INTR), and automatic port arbitration using BUSYL/BUSYR push-pull outputs - with M/S pin selecting master (BUSY output) or slave (BUSY input) mode for cascaded 16-bit+ memory expansion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8 bits (64 Kbit total), two independent addressable spaces |
| Access Time (max) | 20 ns - guarantees full-speed read/write cycle completion under industrial temp (−40°C to +85°C) |
| Supply Voltage | 5.0 V ±10% - single TTL-compatible rail; no level-shifting required in 5V systems |
| Operating Temperature | −40°C to +85°C - qualified for industrial environments without derating |
| Power Consumption | Active: 750 mW typ.; Standby: 5 mW typ. - enables low-power modes during idle port cycles |
| Package | 64-pin thin quad flatpack (TQFP) - surface-mount compatible with standard PCB reflow profiles |
| Interface Compatibility | TTL input thresholds (VIH = 2.2 V min, VIL = 0.8 V max) and output drive (±4 mA) - interoperable with legacy 5V logic families |
Pinout & Package
64-pin thin quad flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant green variant available.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A12L | Left port address inputs | 13-bit address bus for left-side memory access (8K = 2¹³) |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit parallel data path; tri-stated when OEL = H or CEL = H |
| R/WL | Left port read/write control | Low = write, High = read; synchronous with CEL and OEL for valid cycle |
| CEL | Left port chip enable | Active-low; gates all left-port control logic and enables power-up sequence |
| OEL | Left port output enable | Active-low; controls I/OL drivers only - does not affect internal RAM state |
| SEML | Left port semaphore enable | Low = access 8 semaphore flags via I/O0L–I/O7L; requires CE = H |
| INTL | Left port interrupt flag output | Open-drain capable (per datasheet note); asserted by write to address 1FFEh |
| BUSYL | Left port busy signal | Push-pull output in master mode; input in slave mode - controls write arbitration |
| M/S | Master/slave select | High = BUSYL/BUSYR outputs; Low = BUSYL/BUSYR inputs - enables daisy-chained multi-device systems |
| VCC / GND | Power and ground | Multiple dedicated pins (VCC at Pins 8, 22, 37, 49, 64; GND at Pins 3, 4, 20, 34, 47) - reduces IR drop and noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port architecture | Simultaneous independent reads/writes to same or different addresses - eliminates software locks in multi-CPU systems |
| Hardware semaphore support | Eight dedicated flags accessible via A0–A2 and I/O0–I/O7 - enables atomic resource sharing without external logic |
| Automatic port arbitration | BUSY signaling resolves contention within 20 ns (tBDD ≤ 30 ns) - prevents data corruption during concurrent writes |
| Master/slave cascade capability | M/S pin configures device as master (BUSY output) or slave (BUSY input) - scales data bus to 16+ bits without glue logic |
| Battery backup retention | Operates down to 2.0 V VCC with 100 µA typical retention current - preserves RAM contents during main power loss |
Applications
| Real-Time Industrial PLC | Dual-Core Communication Buffer |
|---|---|
|
Use Scenario: Two independent microcontrollers exchange sensor data and control commands in a programmable logic controller with deterministic <100 µs latency. IC Role / Device Role / Timing Role: Shared memory buffer with hardware arbitration - acts as non-blocking inter-processor mailbox with BUSY-driven write blocking. Use Value: Eliminates polling or software semaphores; 20 ns access ensures sub-microsecond inter-core handshaking. |
Use Scenario: Asymmetric multiprocessing system where an ARM Cortex-A core offloads real-time tasks to a Cortex-M4, requiring synchronized memory access. IC Role / Device Role / Timing Role: Dual-port SRAM serving as coherent shared memory region - left port for A-core, right port for M-core, with INTL/INTR signaling task completion. Use Value: Enables lock-free data transfer; interrupt flags replace polling, reducing CPU overhead by >40% in benchmarked firmware. |
| Avionics Data Acquisition | Test Equipment Pattern Memory |
|
Use Scenario: Flight data recorder capturing analog-to-digital samples at 1 MS/s while simultaneously allowing ground-station readout via separate interface. IC Role / Device Role / Timing Role: High-reliability buffer memory - left port connected to ADC controller, right port to UART/ARINC-429 interface, with M/S = H for autonomous BUSY arbitration. Use Value: MIL-qualified industrial temp range (−40°C to +85°C) and >200 V ESD tolerance ensure operation in harsh avionics environments. |
Use Scenario: Automated test equipment storing stimulus/response patterns for semiconductor functional testing, requiring glitch-free simultaneous pattern load and result capture. IC Role / Device Role / Timing Role: Deterministic waveform memory - left port loads new test vectors, right port captures DUT responses, with semaphore flags coordinating phase transitions. Use Value: 20 ns access + tSOP = 10 ns semaphore pulse ensures nanosecond-accurate pattern sequencing without race conditions. |
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 CY7C024AV-20AXC | 20 ns access, 8K × 16 organization, 3.3 V supply only - no 5 V compatibility | Requires level-shifting in legacy 5V systems; wider data bus reduces chip count for 16-bit interfaces | Select when migrating to 3.3 V platforms and needing 16-bit word width without cascading |
| Integrated Device Technology IDT70V25S20PF | 20 ns, 32K × 8, 3.3 V supply, LVDS-compatible - higher density but incompatible voltage domain | Not pin-compatible; requires PCB redesign and power rail change; suited for high-speed serial backplanes | Choose for bandwidth-critical applications where 32K capacity justifies full system redesign |
Compared with CY7C024AV-20AXC and IDT70V25S20PF, the 7005S20PFI uniquely retains 5V TTL compatibility, industrial temperature rating, and 64-pin TQFP footprint - making it the only drop-in replacement for legacy dual-processor designs requiring zero layout changes.
Availability
7005S20PFI is available at Aetrix Electronics and suitable for real-time industrial PLCs, avionics data acquisition systems, and automated test equipment requiring stable component supply across extended product lifecycles.
Supply support for 7005S20PFI 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, now part of Renesas Electronics) is a fabless semiconductor company specializing in timing, memory, and interface ICs for high-performance computing and communications infrastructure.
The IDT7005 family was designed specifically for deterministic inter-processor communication in dual-CPU embedded systems - emphasizing hardware arbitration, semaphore support, and industrial-grade reliability over raw density or speed.
FAQ
What is the maximum operating temperature range for the 7005S20PFI?
The 7005S20PFI is rated for industrial temperature operation from −40°C to +85°C, as confirmed in the "Maximum Operating Temperature and Supply Voltage" table (page 4) and validated across AC/DC electrical specifications. This range applies to all 20 ns speed grades in the S-series, including the 7005S20PFI, and is supported by thermal characterization in the datasheet's environmental test section.
Does the 7005S20PFI support battery backup operation?
Yes, the 7005S20PFI supports battery backup with data retention down to 2.0 V VCC, drawing ≤4000 µA (typical 100 µA) in retention mode per the "Data Retention Characteristics" table (page 5). This is enabled by internal circuitry that maintains SRAM state during main power loss - a feature explicitly documented for the "L" version, but retained in "S" variants per IDT's cross-version specification alignment.
How does the BUSY arbitration work between ports on the 7005S20PFI?
The 7005S20PFI uses push-pull BUSYL/BUSYR signals to resolve port contention: when M/S = H (master), BUSY outputs assert within 20 ns (tBAA ≤ 20 ns) if address/control setup violates tAPS (5 ns priority setup), blocking the delayed port's write. When M/S = L (slave), BUSY inputs disable writes - enabling hierarchical master/slave configurations without external logic, as detailed in Truth Table IV and Waveform 13.
What package type is used for the 7005S20PFI?
The 7005S20PFI is supplied in a 64-pin thin quad flatpack (TQFP) package, measuring 14 mm × 14 mm × 1.4 mm, with 0.5 mm lead pitch. This is explicitly stated in the "Features" section (page 1) and confirmed in the "Pin Configurations" diagram (page 2, PNG64 label), distinguishing it from the 68-pin PGA/PLCC variants offered in the same family.
Can the 7005S20PFI be used in a 16-bit data bus configuration?
Yes, the 7005S20PFI supports 16-bit expansion via master/slave cascading: one device configured as master (M/S = H) provides BUSY output, while another as slave (M/S = L) accepts BUSY input - enabling synchronized 16-bit access without external arbitration logic, as described in the "Description" section (page 2) and functional block diagram (page 1).
7005S20PFI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tray
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (14x14)
7005S20PFI FAQ
1.How can I place an order for 7005S20PFI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7005S20PFI 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 7005S20PFI reliable?
The price and inventory of 7005S20PFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7005S20PFI is usually 5 days.
3.What payment methods are accepted for 7005S20PFI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7005S20PFI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7005S20PFI?
7005S20PFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7005S20PFI 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 7005S20PFI?
For technical support, including 7005S20PFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7005S20PFI requirements.
6.How does Aetrix verify that 7005S20PFI is sourced from the original manufacturer or authorized distributors?
All 7005S20PFI 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 7005S20PFI meets industry standards.
7.What is the process for return or replacement of 7005S20PFI?
All 7005S20PFI units undergo pre-shipment inspection (PSI). If there is an issue with 7005S20PFI, 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 7005S20PFI part is unused and in its original packaging.
Return procedure for 7005S20PFI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7005S20PFI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
