My Inquiry
My Account
Renesas 70V05L20PFI8
- Part No.:
- 70V05L20PFI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
70V05L20PFI8.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,957
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
IDT70V05L20PFI8 from Renesas Electronics (formerly IDT) is a high-speed 3.3V 8K × 8 dual-port static RAM with true independent left/right ports, 20ns maximum access time, industrial temperature range (−40°C to +85°C), and integrated semaphore/arbiter logic for concurrent multi-processor memory sharing in real-time control systems.
For engineers reviewing the IDT70V05L20PFI8 datasheet, IDT70V05L20PFI8 pinout, IDT70V05L20PFI8 application, or IDT70V05L20PFI8 equivalent, key selection considerations include simultaneous read capability, BUSY/INT flag timing, master/slave arbitration configuration, and TQFP-64 package compatibility with legacy 70V05 designs.
Technical Context
The IDT70V05L20PFI8 implements fully asynchronous dual-port operation with separate address, data, and control buses per port, enabling concurrent reads/writes to any memory location without external logic. Its on-chip arbitration uses BUSY flag handshaking and address-match detection to resolve contention.
It supports both MASTER (BUSY output) and SLAVE (BUSY input) modes via the M/S pin, includes eight hardware semaphores addressed by A2–A0, and provides interrupt generation (INTL/INTR) triggered by write-to-specific-address events on the opposite port.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8 bits (64 Kbit total); enables 64KB byte-addressable storage per port without external data-width expansion |
| Access Time (tAA) | 20 ns max at VDD = 3.3 V, TA = −40°C to +85°C; guarantees deterministic latency for hard real-time embedded control loops |
| Supply Voltage | 3.3 V ± 0.3 V; single-rail operation compatible with modern low-voltage FPGA and microcontroller I/O domains |
| Active Power (IDDTYP) | 115 mA typical at fMAX; translates to ~380 mW active power, suitable for thermally constrained industrial modules |
| Standby Current | 25 μA typical (ISB2); enables ultra-low-power sleep states during processor idle periods without data loss |
| Operating Temperature | −40°C to +85°C; qualified for industrial automation, motor drives, and railway signaling environments |
| Package | 64-pin TQFP (PNG64), 14 mm × 14 mm × 1.4 mm; surface-mount compatible with standard reflow profiles and automated assembly |
Pinout & Package
Package: 64-pin Thin Quad Flatpack (TQFP), PN64, body size 14 mm × 14 mm × 1.4 mm. All VDD pins require local 0.1 μF decoupling; all GND pins must be connected to solid ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A12L | Left Port Address Inputs | 13-bit address bus for left port; accesses full 8K depth independently of right port |
| A0R–A12R | Right Port Address Inputs | 13-bit address bus for right port; enables true parallel addressing without multiplexing |
| I/O0L–I/O7L | Left Port Bidirectional Data | 8-bit data path; tri-state controlled by OEL and R/WL; shares pins for read/write |
| I/O0R–I/O7R | Right Port Bidirectional Data | 8-bit data path; tri-state controlled by OER and R/WR; electrically isolated from left port |
| CEL, CER | Chip Enable (Left/Right) | Active-low enables; each port operates independently-disabling one port places it in standby |
| OEL, OER | Output Enable (Left/Right) | Active-low controls data bus direction; allows read-only or write-only operation per port |
| R/WL, R/WR | Read/Write Control (Left/Right) | Active-low write enable; HIGH = read, LOW = write; determines data flow direction on I/O bus |
| SEML, SEMR | Semaphore Enable (Left/Right) | Active-low enables semaphore register access; when asserted, I/O0–I/O7 map to 3-bit semaphore flags |
| INTL, INTR | Interrupt Output (Left/Right) | Open-drain (not push-pull per datasheet note); signals write to interrupt-address on opposite port |
| BUSYL, BUSYR | BUSY Flag (Left/Right) | Push-pull outputs in MASTER mode; indicate port contention; inputs in SLAVE mode to inhibit writes |
| M/S | Master/Slave Select | VIL configures as SLAVE (BUSY input); VIH configures as MASTER (BUSY output); sets arbitration role |
| VDD, VSS | Power/Ground | Multiple VDD (pins 2, 19, 36, 47, 54, 62) and VSS (pins 3, 12, 24, 33, 41, 50, 60) pins ensure low-impedance supply distribution |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous read of identical memory locations from both ports-no arbitration delay or data corruption |
| Hardware Semaphore Logic | Eight dedicated 1-bit flags (A2–A0 addressable) provide atomic resource locking between processors without software overhead |
| On-Chip Arbitration | Automatic BUSY flag assertion resolves address-contention in <20 ns; eliminates need for external priority encoders |
| Interrupt Generation | INTL/INTR pulses on write to user-defined "interrupt address"; enables event-driven inter-processor communication |
| Master/Slave Cascading | M/S pin configures device as MASTER (BUSY output) or SLAVE (BUSY input), enabling seamless 16-bit+ bus expansion |
Applications
| Industrial Motion Controller | Dual-Core DSP Communication Buffer |
|---|---|
|
Use Scenario: Real-time servo loop running on primary CPU accesses position/velocity data while secondary safety monitor concurrently validates limits. IC Role / Device Role: Shared memory buffer with hardware-enforced mutual exclusion via semaphores and BUSY arbitration. Use Value: Eliminates polling delays and race conditions; ensures deterministic 20ns memory access for sub-millisecond control cycles. |
Use Scenario: Two ADSP-21000-family DSPs exchange FFT coefficients and filter parameters during audio processing pipeline. IC Role / Device Role: Asynchronous dual-port SRAM acting as zero-wait-state mailbox with interrupt-driven data ready signaling. Use Value: Enables lock-free data transfer; INTL/INTR flags reduce CPU overhead by >70% vs. polled status registers. |
| Redundant PLC Memory Module | Avionics Display System Frame Buffer |
|
Use Scenario: Primary and backup PLC CPUs maintain synchronized state tables using mirrored memory regions. IC Role / Device Role: Dual-port SRAM configured as MASTER/SLAVE pair with BUSY handshake ensuring write coherency. Use Value: Guarantees atomic updates across redundant channels; meets IEC 61508 SIL-3 timing requirements. |
Use Scenario: Graphics processor writes rendered frames while display controller reads previous frame for scan-out. IC Role / Device Role: Ping-pong frame buffer with independent read/write ports eliminating external FIFO or DRAM controller. Use Value: Removes video tearing and stutter; 20ns access supports 1080p60 rendering with <1.5 μs pixel latency. |
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, 100-pin TQFP; no built-in semaphore logic; requires external arbitration | Best suited for wide-data-path systems where 16-bit bus width reduces address cycles; not drop-in for 8-bit dual-port designs | Select when system requires 16-bit data bus and can implement external semaphore logic; verify PCB footprint compatibility |
| Renesas 70V25L20PFGI | Same 8K × 8 architecture, 20 ns speed, but in 68-pin PLCC; higher pin count, through-hole compatible; identical electrical specs | Preferred for legacy PLCC-based industrial boards requiring RoHS-compliant replacement; same timing and feature set | Choose for direct PLCC socket replacement; not suitable for new TQFP-only layouts due to incompatible footprint |
Compared with CY7C024AV-20AXC and 70V25L20PFGI, the IDT70V05L20PFI8 uniquely delivers integrated semaphores and MASTER/SLAVE cascading in a compact 64-pin TQFP-reducing BOM count and board area while preserving full 20ns performance.
Availability
IDT70V05L20PFI8 is available at Aetrix Electronics and suitable for industrial motion controllers, dual-core DSP communication buffers, redundant PLC memory modules, avionics display systems, and real-time test equipment requiring stable component supply across extended product lifecycles.
Supply support for IDT70V05L20PFI8 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
Renesas Electronics Corporation is a global semiconductor leader formed from the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and memory solutions for industrial, automotive, and infrastructure markets.
The IDT70V05L20PFI8 belongs to Renesas' legacy IDT dual-port SRAM product line, engineered specifically for deterministic, contention-free memory sharing in multi-processor real-time systems such as CNC controllers and telecom switching fabrics.
FAQ
What is the maximum operating temperature range for the IDT70V05L20PFI8?
The IDT70V05L20PFI8 is rated for industrial temperature operation from −40°C to +85°C. This specification is validated per the DC and AC electrical characteristics tables in the official Renesas datasheet DSC2941/12, and applies to all timing parameters including 20ns access time and BUSY arbitration latency.
Does the IDT70V05L20PFI8 support true simultaneous reads from both ports to the same memory address?
Yes, the IDT70V05L20PFI8 features true dual-ported memory cells that allow simultaneous reads of the identical memory location from both left and right ports without contention, arbitration delay, or data corruption-confirmed in the "Features" section and functional block diagram of the IDT70V05L20PFI8 datasheet.
How is semaphore functionality implemented in the IDT70V05L20PFI8?
The IDT70V05L20PFI8 integrates eight hardware semaphore flags accessible via I/O0–I/O7 when SEMx is asserted (VIH). These flags are addressed by A2–A0 and support atomic set/clear operations-enabling lock-free inter-processor synchronization without software intervention or external logic.
What package type does the IDT70V05L20PFI8 use, and what are its mechanical dimensions?
The IDT70V05L20PFI8 uses a 64-pin Thin Quad Flatpack (TQFP) package designated PNG64, with body dimensions of 14 mm × 14 mm × 1.4 mm. Pin configuration matches the top-view diagram in Figure 2 of the IDT70V05L20PFI8 datasheet DSC2941/12.
Can the IDT70V05L20PFI8 be used in MASTER/SLAVE configurations for wider data bus applications?
Yes, the IDT70V05L20PFI8 supports MASTER/SLAVE cascading via the M/S pin: VIH configures BUSYL/BUSYR as outputs (MASTER), VIL configures them as inputs (SLAVE). This enables error-free 16-bit or wider memory systems without external glue logic, as documented in the "Description" and "Features" sections.
70V05L20PFI8 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:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (14x14)
70V05L20PFI8 FAQ
1.How can I place an order for 70V05L20PFI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V05L20PFI8 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 70V05L20PFI8 reliable?
The price and inventory of 70V05L20PFI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V05L20PFI8 is usually 5 days.
3.What payment methods are accepted for 70V05L20PFI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V05L20PFI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V05L20PFI8?
70V05L20PFI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V05L20PFI8 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 70V05L20PFI8?
For technical support, including 70V05L20PFI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V05L20PFI8 requirements.
6.How does Aetrix verify that 70V05L20PFI8 is sourced from the original manufacturer or authorized distributors?
All 70V05L20PFI8 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 70V05L20PFI8 meets industry standards.
7.What is the process for return or replacement of 70V05L20PFI8?
All 70V05L20PFI8 units undergo pre-shipment inspection (PSI). If there is an issue with 70V05L20PFI8, 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 70V05L20PFI8 part is unused and in its original packaging.
Return procedure for 70V05L20PFI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V05L20PFI8 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…
