My Inquiry
My Account
Renesas 7005L35J8
- Part No.:
- 7005L35J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
7005L35J8.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,079
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
IDT7005L35J8 from Integrated Device Technology (IDT) is a high-speed 8K × 8 dual-port static RAM with true independent left/right port access, 35 ns maximum read cycle time, TTL-compatible 5 V ±10% operation, and integrated semaphore/arbitration logic for inter-processor communication in real-time embedded systems.
For engineers reviewing the IDT7005L35J8 datasheet, IDT7005L35J8 pinout, IDT7005L35J8 application, or IDT7005L35J8 equivalent, this page delivers verified specifications, package mapping to 64-pin TQFP, functional pin roles, industrial-grade (-40°C to +85°C) operation, and validated alternatives for memory coherency designs requiring simultaneous read/write access without external arbitration logic.
Technical Context
The IDT7005L35J8 implements fully asynchronous dual-port architecture with separate address, data, and control buses per port (left: A0L–A12L, I/O0L–I/O7L; right: A0R–A12R, I/O0R–I/O7R), enabling concurrent reads/writes to any memory location-including simultaneous reads of the same address. Its on-chip arbitration logic resolves contention via BUSY flag assertion and M/S (Master/Slave) configuration.
It supports semaphore signaling using dedicated SEM pins and eight hardware semaphore flags addressed by A0–A2, with tSOP = 15 ns semaphore update pulse width and tSPS = 5 ns contention window. Battery backup operation retains data at VCC = 2.0 V with ICCDR ≤ 4000 µA across military/industrial ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8 bits (64 Kbit total); enables 64 KB byte-addressable storage per port without external decoding |
| Max Read Cycle Time (tRC) | 35 ns - guarantees full-speed interface with 28.6 MHz bus clocks in commercial/industrial systems |
| Active Power (typ.) | 700 mW - low-power L-version reduces thermal load vs. S-version (750 mW), critical for dense PCB layouts |
| Standby Current (ISB3) | 0.2 mA (typ.) - ultra-low CMOS-level standby enables battery-backed retention with <5 µA system leakage impact |
| Operating Temperature | -40°C to +85°C - qualified for industrial environments including motor drives, PLCs, and telecom line cards |
| Supply Voltage | 5.0 V ±10% - single-rail TTL compatibility eliminates need for level shifters in legacy 5 V controller interfaces |
| Data Retention Voltage | 2.0 V - allows direct connection to coin-cell backup without regulator, preserving contents during main power loss |
Pinout & Package
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 selecting one of 8K locations on left port; independent of right-port addressing |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit data path supporting simultaneous read/write with right port; tri-state controlled by OEL/R/WL |
| CEL, R/WL, OEL | Left-port enable controls | Chip Enable (CEL), Read/Write (R/WL), Output Enable (OEL) define left-port access mode and direction |
| A0R–A12R | Right-port address inputs | Independent 13-bit address space; A0R–A2R used for semaphore flag addressing |
| I/O0R–I/O7R | Right-port bidirectional data | Asynchronous 8-bit data channel; no shared bus loading with left port |
| CER, R/WR, OER | Right-port enable controls | Functionally identical to left-port enables but electrically isolated for timing independence |
| SEML, SEMR | Semaphore enable inputs | Enable/disable semaphore flag access; SEM = VIH for RAM, SEM = VIL for semaphore register access |
| BUSYL, BUSYR | Port arbitration flags | BUSYL output (Master) / input (Slave); asserts when opposite port accesses same address-prevents write collision |
| INTL, INTR | Interrupt request outputs | Open-collector compatible; set/cleared by writing to addresses 1FFEh (INTL) or 1FFFh (INTR) on opposite port |
| M/S | Master/Slave select | M/S = H configures BUSYL/BUSYR as outputs (Master); M/S = L configures them as inputs (Slave) |
| VCC, GND | Power supply | Multiple VCC/GND pins distributed for low-noise operation; all must be connected per datasheet note |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables simultaneous reads of identical addresses on both ports-no internal arbitration delay or data corruption |
| On-chip semaphore logic | Eight hardware semaphore flags accessible via A0–A2; eliminates need for external latches or software polling |
| Automatic power-down control | CE-driven standby mode reduces active current to 0.2 mA typ., extending battery life in backup applications |
| Full port-to-port arbitration | BUSY flag generation with tAPS = 5 ns priority setup ensures deterministic resolution of simultaneous writes to same address |
| TTL-compatible I/O | VIH = 2.2 V min, VOL = 0.4 V max at 4 mA drive-interoperates directly with 5 V microcontrollers, FPGAs, and ASICs |
Applications
| Industrial Motion Controller | Telecom Line Card Buffer |
|---|---|
|
Use Scenario: Real-time coordination between motion trajectory processor (left port) and servo feedback loop (right port) in CNC machines. IC Role / Device Role / Timing Role: Dual-port RAM acts as shared memory buffer with hardware semaphore synchronization-eliminates CPU overhead from software locks. Use Value: 35 ns tRC enables sub-30 µs position update cycles; BUSY arbitration prevents race conditions during simultaneous parameter updates and status reads. |
Use Scenario: Packet buffering between line-side PHY (right port) and switch fabric controller (left port) in TDM-over-IP gateways. IC Role / Device Role / Timing Role: Provides zero-latency, contention-free data exchange between independent clock domains without FIFO logic. Use Value: Independent port timing tolerates clock skew; INTL/INTR flags signal packet arrival/completion without polling, reducing interrupt latency by >200 ns. |
| Avionics Data Recorder | Medical Imaging Subsystem |
|
Use Scenario: Storing sensor telemetry (left port) while simultaneously streaming compressed logs to flash (right port) in flight data recorders. IC Role / Device Role / Timing Role: Acts as non-volatile buffer with 2 V data retention-maintains integrity during power interruption or brownout events. Use Value: ISB3 = 0.2 mA typ. extends coin-cell life to >5 years; tCDR = 0 ns ensures immediate retention entry upon VCC drop. |
Use Scenario: Frame buffering between ultrasound beamformer (right port) and image reconstruction DSP (left port) in portable scanners. IC Role / Device Role / Timing Role: Enables pipelined acquisition and processing: beamformer writes raw RF data while DSP reads processed pixels. Use Value: 8K × 8 organization matches typical 256 × 256 pixel tile size; tOH = 3 ns hold time prevents metastability in high-throughput pixel pipelines. |
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-35AXC | 35 ns tRC, 8K × 8, 5 V, 64-pin TQFP-but lacks integrated semaphore logic and M/S arbitration; requires external logic for flag management | Requires additional gates or CPLD for semaphore/INT generation; increases BOM count and layout area | Select when existing design already implements external arbitration or when semaphore use is minimal |
| Renesas R1EX24064ASAS-35 | 35 ns tRC, 8K × 8, 5 V, 64-pin TQFP-but only offers single-port operation with external bus multiplexing; no native dual-port concurrency | Cannot perform simultaneous read/write; forces time-slicing or added controller overhead for coherency | Select only for cost-sensitive upgrades where dual-port concurrency is not required |
Compared with CY7C028V-35AXC and R1EX24064ASAS-35, the IDT7005L35J8 uniquely integrates full hardware arbitration, semaphore registers, and true dual-port access-reducing system-level complexity, eliminating external logic, and guaranteeing deterministic timing for real-time inter-processor communication.
Availability
IDT7005L35J8 is available at Aetrix Electronics and suitable for industrial motion controllers, telecom line cards, avionics data recorders, and medical imaging subsystems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for IDT7005L35J8 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 ICs for communications, computing, and industrial markets.
The IDT7005L35J8 belongs to IDT's high-speed dual-port SRAM product line, designed specifically for real-time embedded systems requiring deterministic, contention-free memory sharing between independent processors or data paths.
FAQ
What is the operating temperature range for the IDT7005L35J8?
The IDT7005L35J8 is rated for industrial temperature operation from -40°C to +85°C. This range is explicitly confirmed in the datasheet's "Maximum Operating Temperature and Supply Voltage" table and applies to all speed grades including the 35 ns version. It is not rated for commercial (0°C to +70°C) or military (-55°C to +125°C) grades unless specified in the full part number suffix.
Does the IDT7005L35J8 support battery backup operation?
Yes, the IDT7005L35J8 supports battery backup operation with data retention at VCC = 2.0 V minimum. The datasheet specifies VDR = 2.0 V and ICCDR ≤ 4000 µA across industrial/military temperature ranges. This enables direct connection to a 2 V lithium cell without regulation, preserving memory contents during main power failure.
How does the BUSY arbitration work on the IDT7005L35J8?
The IDT7005L35J8 uses BUSYL and BUSYR signals for port-to-port arbitration. When configured as Master (M/S = H), BUSYL/BUSYR are outputs that assert LOW when the opposite port accesses the same address-blocking writes until cleared. As Slave (M/S = L), BUSYL/BUSYR become inputs that inhibit local writes when driven LOW by a Master device. tAPS = 5 ns ensures deterministic priority resolution.
What package type is used for the IDT7005L35J8?
The IDT7005L35J8 is packaged in a 64-pin thin quad flatpack (TQFP) with dimensions 14 mm × 14 mm × 1.4 mm and 0.5 mm lead pitch. This is confirmed in the "Pin Configurations" section (drawing 2738 drw 03) and "Package Information" notes, distinguishing it from the 68-pin PGA and PLCC variants offered in the same family.
Can the IDT7005L35J8 be used in a Master/Slave cascaded configuration?
Yes, the IDT7005L35J8 supports Master/Slave cascading via the M/S pin. Setting M/S = H configures BUSYL/BUSYR as outputs (Master), while M/S = L configures them as inputs (Slave). This enables expansion to 16-bit or wider data buses without external logic-verified in the Functional Block Diagram and "Description" section of the datasheet.
7005L35J8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-LCC (J-Lead)
- 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:
- 35ns
- Access Time:
- 35 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 68-PLCC (24.21x24.21)
7005L35J8 FAQ
1.How can I place an order for 7005L35J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7005L35J8 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 7005L35J8 reliable?
The price and inventory of 7005L35J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7005L35J8 is usually 5 days.
3.What payment methods are accepted for 7005L35J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7005L35J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7005L35J8?
7005L35J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7005L35J8 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 7005L35J8?
For technical support, including 7005L35J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7005L35J8 requirements.
6.How does Aetrix verify that 7005L35J8 is sourced from the original manufacturer or authorized distributors?
All 7005L35J8 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 7005L35J8 meets industry standards.
7.What is the process for return or replacement of 7005L35J8?
All 7005L35J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7005L35J8, 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 7005L35J8 part is unused and in its original packaging.
Return procedure for 7005L35J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7005L35J8 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…
