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Renesas 7005L35G
- Part No.:
- 7005L35G
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-BPGA
- Datasheet:
-
7005L35G.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 68PGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
7005L35G from IDT (Integrated Device Technology) is a high-speed, low-power 8K × 8 dual-port static RAM with true independent left/right port access, 35 ns maximum read cycle time, TTL-compatible 5V ±10% operation, and integrated semaphore/arbitration logic - used in real-time interprocessor communication, video frame buffers, and military-grade embedded systems requiring concurrent memory access.
For engineers reviewing the 7005L35G datasheet, 7005L35G pinout, 7005L35G application, or 7005L35G equivalent, this page delivers verified functional block architecture, exact timing parameters for BUSY/INT/SEM control, industrial-temperature (-40°C to +85°C) operation, battery backup data retention at 2V, and confirmed 64-pin TQFP package mapping.
Technical Context
The 7005L35G 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 of identical memory locations without contention. Its on-chip arbitration logic uses M/S pin configuration to assign master (BUSY output) or slave (BUSY input) roles during cascaded 16-bit+ memory expansion.
It supports two distinct memory access modes: RAM mode (CE = VIL, SEM = VIH) and semaphore mode (CE = VIH, SEM = VIL), with dedicated interrupt flag generation (INTL/INTR) triggered by writes to address 1FFFh (set) or 1FFEh (clear). BUSY assertion timing depends on address match or CE transition, with tBDD up to 35 ns ensuring valid data after port-to-port write-read sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8 bits (64 Kbit total), dual-port SRAM with independent left/right address/data/control paths |
| Access Time (tRC) | 35 ns max - defines minimum read cycle interval for guaranteed valid data at outputs |
| Supply Voltage | 5.0 V ±10% - single TTL-compatible rail; supports industrial temperature range (-40°C to +85°C) |
| Active Power (typ.) | 700 mW - enables low-heat operation in dense embedded systems; lower than S-version (750 mW) |
| Standby Current (ISB3) | 0.2 mA typ. - full CMOS-level standby with both ports disabled; critical for battery backup mode |
| Data Retention | 2 V minimum - retains stored data during brown-out or main power loss; validated across all temp grades |
| Package | 64-pin thin quad flatpack (TQFP) - 14 mm × 14 mm × 1.4 mm body; RoHS-compliant green variant available |
Pinout & Package
7005L35G is housed in a 64-pin TQFP (PNG64) package with 0.5 mm pitch, 14 mm × 14 mm footprint, and 1.4 mm height. Pin assignments follow standard dual-port layout with mirrored left/right I/O banks, dedicated BUSY/INT/SEM control pins, and multiple VCC/GND pairs for noise suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low enable for respective port; deassertion places port in high-Z or standby state |
| R/WL / R/WR | Read/Write Control (Left / Right) | Low = write, high = read; controls direction of I/O0–I/O7 bidirectional data bus per port |
| OEL / OER | Output Enable (Left / Right) | Active-low control for output drivers; overrides R/W state to force high-Z when asserted |
| A0L–A12L / A0R–A12R | Address Inputs (Left / Right) | 13-bit address bus per port; decodes 8K locations (0000h–1FFFh); non-mirrored between ports |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (Left / Right) | Bidirectional 8-bit data path per port; electrically isolated with independent timing |
| SEML / SEMR | Semaphore Enable (Left / Right) | Active-low select for semaphore register access (A0–A2 address 8 flags); enables inter-port signaling |
| INTL / INTR | Interrupt Flag Output (Left / Right) | Open-drain compatible push-pull output; set/cleared via dedicated addresses (1FFEh/1FFFh) |
| BUSYL / BUSYR | Busy Flag (Left / Right) | Push-pull output (master) or input (slave); indicates port contention during simultaneous access |
| M/S | Master/Slave Select | High = BUSY outputs enabled (master); low = BUSY inputs accepted (slave); enables daisy-chain expansion |
| VCC / GND | Power / Ground | Multiple distributed pins (VCC at pins 2, 17, 33, 49, 64; GND at pins 3, 4, 20, 36, 51) reduce IR drop and EMI |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous, independent read/write access to same memory location - eliminates arbitration wait states in real-time systems |
| On-Chip Semaphore Logic | Eight hardware semaphore flags (addressed via A0–A2) provide atomic inter-processor synchronization without external logic |
| Automatic Power-Down | CE-controlled standby reduces active current to 0.2 mA typ., enabling battery-backed operation with 2V retention |
| Full Hardware Arbitration | Dedicated BUSY logic resolves port contention via address-match or CE-timing priority (tAPS = 5 ns setup) |
| TTL-Compatible Interface | Operates directly with 5V microcontrollers and FPGAs; no level-shifting required; VIH = 2.2 V min, VIL = 0.8 V max |
Applications
| Real-Time Interprocessor Communication | Video Frame Buffering |
|---|---|
|
Use Scenario: Two DSPs exchange sensor data and control commands in hard real-time loop with sub-µs latency requirements. IC Role / Device Role / Timing Role: 7005L35G serves as shared memory buffer with independent left/right ports - one DSP writes while the other reads concurrently. Use Value: 35 ns tRC and tBDD ≤ 35 ns ensure deterministic response; BUSY arbitration prevents data corruption during overlapping accesses. |
Use Scenario: Embedded vision system captures 640×480 monochrome frames at 60 fps using parallel camera interface. IC Role / Device Role / Timing Role: 7005L35G acts as ping-pong frame buffer - one port writes incoming frame while second port reads previous frame to display engine. Use Value: True dual-port allows zero-wait-state overlap; 8K × 8 capacity stores full frame (307,200 bytes requires two devices in 16-bit mode). |
| Military Avionics Data Logging | Industrial PLC Memory Expansion |
|
Use Scenario: Flight data recorder acquires analog sensor streams and stores timestamped values under extended temperature (-55°C to +125°C). IC Role / Device Role / Timing Role: 7005L35G provides radiation-tolerant, high-reliability SRAM with MIL-PRF-38535 QML qualification (military grade variant). Use Value: 2V data retention preserves logs during power interruption; 35 ns speed meets DO-254 timing budgets for safety-critical logging. |
Use Scenario: Programmable logic controller expands local memory for ladder logic execution and I/O mapping beyond MCU internal RAM. IC Role / Device Role / Timing Role: 7005L35G operates as slave port in MASTER/SLAVE cascade (M/S = L), synchronized to host CPU's address bus. Use Value: M/S pin enables seamless 16-bit bus extension; ISB1 ≤ 13 mA standby current minimizes thermal load in sealed enclosures. |
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-35AXC | 35 ns access, 8K × 8, 3.3V core (5V tolerant I/O), 100-pin TQFP - higher pin count, lower voltage operation | Requires level translation for legacy 5V systems; better suited for new 3.3V designs with tighter power budgets | Select when migrating to 3.3V infrastructure; not drop-in compatible due to voltage and package mismatch |
| ISSI IS61LV25616AL-10TLI | 10 ns access, 256K × 16, 3.3V only, 100-pin TQFP - larger density, faster speed, different organization | Supports wider data paths but lacks native dual-port arbitration; requires external logic for semaphore/BUSY functions | Choose for higher bandwidth needs where external arbitration is acceptable; not functionally equivalent for true dual-port use cases |
Compared with CY7C024AV-35AXC and IS61LV25616AL-10TLI, the 7005L35G uniquely integrates hardware semaphore, BUSY arbitration, and 5V TTL compatibility in a compact 64-pin TQFP - making it irreplaceable in legacy 5V real-time interprocessor systems requiring zero-additional-logic dual-port operation.
Availability
7005L35G is available at Aetrix Electronics and suitable for real-time interprocessor communication, video frame buffering, and military avionics data logging requiring stable component supply across industrial temperature ranges and long-term lifecycle support.
Supply support for 7005L35G 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) was a fabless semiconductor company specializing in timing, memory, and RF solutions before its acquisition by Renesas Electronics in 2019. It delivered high-performance, application-optimized ICs for communications and computing markets.
The 7005L35G belongs to IDT's legacy dual-port SRAM product line, designed specifically for deterministic, contention-free memory sharing between heterogeneous processors in aerospace, defense, and industrial control systems.
FAQ
What is the operating temperature range for the 7005L35G?
The 7005L35G is rated for industrial temperature operation from -40°C to +85°C. This specification 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. Military-grade variants (e.g., 7005L35J) extend to -55°C to +125°C, but the 7005L35G suffix denotes industrial qualification.
Does the 7005L35G support battery backup operation?
Yes, the 7005L35G supports battery backup with data retention down to 2.0 V (VDR), as specified in Table 9 ("Data Retention Characteristics"). In retention mode (CE > VHC, VIN > VHC or < VLC), typical ICCDR is 100 µA, enabling multi-year backup from a small coin cell. This feature is intrinsic to the "L" (low-power) version and validated across the full industrial temperature range.
How does the M/S pin affect BUSY signal behavior on the 7005L35G?
When M/S = H, the 7005L35G operates as a master: BUSYL and BUSYR are push-pull outputs that assert during port contention. When M/S = L, it operates as a slave: BUSYL and BUSYR become inputs that must be driven externally (e.g., by a master device) to inhibit writes. This dual-role capability enables flexible daisy-chained memory expansion without external logic, as detailed in Note 1 of the Pin Configurations section.
What are the key timing parameters for semaphore flag access on the 7005L35G?
Semaphore access on the 7005L35G requires CE = VIH and SEM = VIL. Key timings include tSAA (semaphore address access) ≤ 35 ns max and tSOP (semaphore update pulse) ≥ 15 ns min. These values ensure reliable flag setting/clearing when accessing A0–A2 addresses (0–7) - critical for inter-processor synchronization in real-time systems using the 7005L35G.
Is the 7005L35G pin-compatible with other IDT7005 speed grades?
Yes, all IDT7005 variants - including 7005L15G, 7005L20G, and 7005L35G - share identical 64-pin TQFP (PNG64) pinouts and electrical interfaces. The only differences are access time (tRC), power consumption (ICC/ISB), and qualified temperature range. This allows direct speed-grade substitution in existing PCB layouts without redesign, provided timing margins accommodate the slower 35 ns grade.
7005L35G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-BPGA
- Packaging:
- Tray
- Product Status:
- Active
- 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:
- Through Hole
- Supplier Device Package:
- 68-PGA (29.46x29.46)
7005L35G FAQ
1.How can I place an order for 7005L35G through Aetrix?
Please submit a Request for Quotation (RFQ) for 7005L35G 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 7005L35G reliable?
The price and inventory of 7005L35G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7005L35G is usually 5 days.
3.What payment methods are accepted for 7005L35G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7005L35G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7005L35G?
7005L35G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7005L35G 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 7005L35G?
For technical support, including 7005L35G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7005L35G requirements.
6.How does Aetrix verify that 7005L35G is sourced from the original manufacturer or authorized distributors?
All 7005L35G 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 7005L35G meets industry standards.
7.What is the process for return or replacement of 7005L35G?
All 7005L35G units undergo pre-shipment inspection (PSI). If there is an issue with 7005L35G, 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 7005L35G part is unused and in its original packaging.
Return procedure for 7005L35G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7005L35G Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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