My Inquiry
My Account
Renesas 7005L20PF
- Part No.:
- 7005L20PF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7005L20PF.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,930
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7005L20PF from IDT is a high-speed 8K × 8 dual-port static RAM with true independent left/right port access, 20 ns max read cycle time (tRC), 1 mW typical standby power, and TTL-compatible 5 V ±10% operation - deployed in real-time inter-processor communication systems requiring concurrent memory access without arbitration logic.
For engineers reviewing the 7005L20PF datasheet, 7005L20PF pinout, 7005L20PF application, or 7005L20PF equivalent, this page delivers verified timing specs, master/slave semaphore arbitration behavior, BUSY flag response latency, and battery-backed data retention at 2 V - all critical for deterministic dual-CPU shared-memory designs.
Technical Context
The 7005L20PF implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port (A0L–A12L/I/O0L–I/O7L and A0R–A12R/I/O0R–I/O7R), enabling simultaneous reads from identical addresses. Its on-chip arbitration logic resolves contention via BUSY flag assertion with tBAA ≤ 20 ns and tAPS = 5 ns setup.
It supports both RAM mode (CE = VIL, SEM = VIH) and semaphore mode (CE = VIH, SEM = VIL), with eight dedicated semaphore flags addressed by A0–A2 and controlled via I/O0–I/O7. M/S pin configures master (BUSY output) or slave (BUSY input) operation for cascaded 16-bit+ systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8 bits (64 Kbit), two independent addressable ports |
| Access Time (tRC) | 20 ns max - guarantees full-speed operation in 50 MHz bus systems |
| Standby Power (ISB3) | 0.2 mA typ. (1 mW @ 5 V) - enables low-power hold mode during CPU idle |
| Data Retention Voltage | 2.0 V min - retains valid data during brown-out or backup-battery operation |
| Operating Temperature | −40°C to +85°C - qualified for industrial embedded control environments |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard TTL logic rails and noise margins |
| Package | 64-pin thin quad flatpack (TQFP), 14 mm × 14 mm × 1.4 mm body |
Pinout & Package
7005L20PF is housed in a 64-pin TQFP (PNG64) package with 0.5 mm pitch, thermally enhanced for industrial ambient operation. Pin 1 is marked by notch or dot; VCC (pins 8, 23, 39, 52) and GND (pins 7, 22, 38, 51) require local decoupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left/Right) | Active-low enable per port; controls port activation and power-down entry |
| R/WL / R/WR | Read/Write Control (Left/Right) | Determines direction of data transfer on respective I/O bus |
| OEL / OER | Output Enable (Left/Right) | Tri-states I/O pins independently; allows shared bus usage |
| A0L–A12L / A0R–A12R | Address Inputs (Left/Right) | 13-bit address space per port (0x0000–0x1FFF); non-mirrored addressing |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional Data (Left/Right) | 8-bit parallel data path per port; supports simultaneous read/write to same location |
| SEML / SEMR | Semaphore Enable (Left/Right) | Activates semaphore register access mode when CE = VIH |
| INTL / INTR | Interrupt Flag Output (Left/Right) | Open-collector compatible; signals semaphore state change or error condition |
| BUSYL / BUSYR | Arbitration Busy Flag (Left/Right) | Push-pull output (master) or input (slave); blocks write during port contention |
| M/S | Master/Slave Select | H = master (BUSY outputs), L = slave (BUSY inputs); enables daisy-chained 16-bit expansion |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables simultaneous read from identical address on both ports - no internal arbitration delay |
| On-chip semaphore logic | Eight hardware semaphore flags accessible via A0–A2 and I/O0–I/O7 - eliminates external lock management ICs |
| Automatic power-down control | CE-driven standby mode reduces active current to 1 mW typ. - extends battery life in backup applications |
| Full port-to-port arbitration | BUSY flag asserts within 20 ns (tBAA) on address match - ensures deterministic contention resolution |
| TTL-compatible interface | Operates directly with 5 V microcontrollers and FPGAs without level-shifting circuitry |
Applications
| Real-Time Inter-Processor Communication | Digital Signal Processing Buffering |
|---|---|
|
Use Scenario: Two DSPs sharing sensor data streams in radar beamforming, where one writes raw ADC samples while the other reads processed FFT bins. IC Role / Device Role / Timing Role: Dual-port RAM acts as zero-latency shared buffer; left port writes at 40 MSPS, right port reads at 20 MSPS with tRC = 20 ns guaranteeing no pipeline stall. Use Value: Eliminates FIFO synchronization overhead and avoids software-managed memory locks - reduces inter-core latency to sub-20 ns. |
Use Scenario: Audio codec interfacing with ARM host and dedicated audio DSP, requiring low-jitter sample exchange across clock domains. IC Role / Device Role / Timing Role: Serves as asynchronous bridge memory; left port clocks with I²S LRCLK, right port syncs to ARM AHB - BUSY arbitration prevents sample corruption. Use Value: Enables glitch-free sample handoff without DMA coherency protocols or software polling - cuts audio buffer underrun risk by >99%. |
| Industrial PLC Memory Coherency | Avionics Fault-Tolerant Data Exchange |
|
Use Scenario: Redundant controller pair in safety-critical PLC executing identical ladder logic, requiring synchronized state snapshot updates every 10 ms. IC Role / Device Role / Timing Role: Provides atomic read-modify-write capability via semaphore flags; INTL/INTR signals completion of mirrored state commit. Use Value: Guarantees state consistency across controllers without watchdog timeouts - meets SIL-3 diagnostic coverage requirements. |
Use Scenario: Flight control computer exchanging sensor fusion results between primary and backup channels under DO-254 compliance. IC Role / Device Role / Timing Role: Acts as certified shared memory with 2 V data retention; M/S configuration enforces master-slave failover protocol. Use Value: Supports cold-spare redundancy with <1 µs switchover latency - satisfies RTCA/DO-160E environmental stress testing. |
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 tRC, 5 V, 8K × 8, but uses 100-pin TQFP and lacks integrated semaphore logic | Requires external arbitration logic for semaphore signaling; larger PCB footprint | Select when legacy Cypress footprint compatibility is required and external logic is acceptable |
| AS7C38098B-20TIN | 20 ns tRC, 3.3 V only, 8K × 8, no BUSY arbitration or M/S cascade support | Not suitable for 5 V systems or master/slave expansion; no hardware semaphore registers | Choose only for new 3.3 V designs where voltage scaling outweighs loss of arbitration features |
Compared with CY7C028V-20AXC and AS7C38098B-20TIN, the 7005L20PF uniquely integrates BUSY arbitration, semaphore registers, and M/S expansion in a compact 64-pin TQFP - reducing BOM count by ≥3 components and enabling deterministic real-time inter-processor coordination.
Availability
7005L20PF is available at Aetrix Electronics and suitable for real-time inter-processor communication, industrial PLC memory coherency, and avionics fault-tolerant data exchange requiring stable component supply across extended product lifecycles.
Supply support for 7005L20PF 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 high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.
The IDT7005 family was designed specifically for deterministic dual-CPU shared-memory architectures - delivering hardware-enforced arbitration, low-power retention, and seamless 16-bit expansion without external glue logic.
FAQ
What is the maximum operating temperature range for the 7005L20PF?
The 7005L20PF is rated for industrial temperature operation from −40°C to +85°C, validated across all AC and DC specifications including tRC = 20 ns max, ISB3 = 0.2 mA typ., and data retention at 2 V. This range is confirmed in the official IDT datasheet revision Feb.14.20, Table 5.
Does the 7005L20PF support battery backup operation?
Yes, the 7005L20PF supports battery backup with guaranteed data retention at VCC = 2.0 V minimum (Table 9), drawing only 100 µA typ. (ICCDR) in retention mode. This enables operation during main power failure while preserving memory contents - a defined feature of the "L" (low-power) variant.
How does the M/S pin affect BUSY signal behavior on the 7005L20PF?
When M/S = H, the 7005L20PF operates as master: BUSYL and BUSYR are push-pull outputs that assert within 20 ns (tBAA) on address contention. When M/S = L, it operates as slave: BUSYL and BUSYR become inputs that inhibit writes when driven low by a master - enabling hierarchical arbitration in multi-device systems.
Can the 7005L20PF perform simultaneous reads from both ports to the same memory address?
Yes, the 7005L20PF uses true dual-port memory cells that allow concurrent reads from identical addresses on left and right ports with no timing penalty or arbitration delay - a core architectural feature explicitly stated in the "Features" section of the datasheet.
What is the function of the SEM pins on the 7005L20PF?
The SEML and SEMR pins enable semaphore register access mode: when CE = VIH and SEM = VIL, the device routes I/O0–I/O7 to eight hardware semaphore flags addressed by A0–A2. This provides atomic lock/unlock capability without software intervention - a documented function in Truth Table II and Figure 11 of the datasheet.
7005L20PF 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (14x14)
7005L20PF FAQ
1.How can I place an order for 7005L20PF through Aetrix?
Please submit a Request for Quotation (RFQ) for 7005L20PF 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 7005L20PF reliable?
The price and inventory of 7005L20PF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7005L20PF is usually 5 days.
3.What payment methods are accepted for 7005L20PF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7005L20PF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7005L20PF?
7005L20PF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7005L20PF 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 7005L20PF?
For technical support, including 7005L20PF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7005L20PF requirements.
6.How does Aetrix verify that 7005L20PF is sourced from the original manufacturer or authorized distributors?
All 7005L20PF 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 7005L20PF meets industry standards.
7.What is the process for return or replacement of 7005L20PF?
All 7005L20PF units undergo pre-shipment inspection (PSI). If there is an issue with 7005L20PF, 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 7005L20PF part is unused and in its original packaging.
Return procedure for 7005L20PF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7005L20PF 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…
