My Inquiry
My Account
Renesas 7005L70GB
- Part No.:
- 7005L70GB
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-BPGA
- Datasheet:
-
7005L70GB.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 68PGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,640
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7005L70GB from IDT is a high-speed 8K × 8 dual-port static RAM with true independent left/right port access, 70 ns max read cycle time (military grade), 2V data retention capability, and full on-chip semaphore/interrupt/arbitration logic-used in real-time embedded systems requiring concurrent CPU/DSP memory access.
For engineers reviewing the 7005L70GB datasheet, 7005L70GB pinout, 7005L70GB application, or 7005L70GB equivalent, this page delivers verified timing specs, master/slave BUSY arbitration behavior, battery-backed standby operation, and TQFP-64 package compatibility for ruggedized military and industrial designs.
Technical Context
The 7005L70GB implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port, enabling simultaneous reads from identical memory locations without contention. Its on-chip arbitration logic resolves port conflicts via BUSY flag assertion based on address match or CE timing priority.
It supports semaphore signaling across ports using A0–A2 to select one of eight flags, with dedicated SEM/INT pins and push-pull BUSY outputs (M/S = H) or inputs (M/S = L). The device operates at 5.0 V ±10% and retains data down to 2 V, meeting MIL-PRF-38535 QML requirements for military temperature range (−55°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8K × 8 bits (64 Kbit), organized as two independent 8K-word × 8-bit ports |
| Access Time | 70 ns max read cycle time (tRC), specified for military-grade operation at −55°C to +125°C |
| Power Consumption | Active: 140 mA typ (ICC), Standby (full): 0.2 mA typ (ISB3), enabling low-power battery backup |
| Data Retention | 2 V minimum VCC for data retention; supports unregulated backup supply during main power loss |
| Arbitration Logic | Hardware-based BUSY flag generation with tAPS = 5 ns setup time; resolves port contention without external logic |
| Interface Voltage | TTL-compatible inputs/outputs; VIH = 2.2 V min, VIL = 0.8 V max; operates from single 5.0 V ±10% supply |
| Package | 64-pin thin quad flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead-free and RoHS-compliant |
Pinout & Package
7005L70GB is housed in a 64-pin TQFP package (PNG64) with 0.5 mm pitch, thermally enhanced for military-grade thermal cycling. Pin assignments follow standard dual-port layout with mirrored left/right I/O, address, and control groups.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A12L | Left Port Address Inputs | 13-bit address bus for left port; selects one of 8K memory locations independently of right port |
| I/O0L–I/O7L | Left Port Bidirectional Data | 8-bit data path for reads/writes; tri-stated when OEL = H or CEL = H |
| CEL, OEL, R/WL | Left Port Control Enables | Chip Enable, Output Enable, Read/Write Enable - fully asynchronous with no internal clock dependency |
| A0R–A12R | Right Port Address Inputs | Independent 13-bit address space; non-overlapping with left port addressing |
| I/O0R–I/O7R | Right Port Bidirectional Data | Separate 8-bit data bus; allows concurrent access to same or different addresses as left port |
| CER, OER, R/WR | Right Port Control Enables | Functionally identical to left-side controls; enables true dual-port concurrency |
| SEML, SEMR | Semaphore Enable Inputs | Enable semaphore flag access (A0–A2) instead of RAM array; required for inter-port synchronization |
| INTL, INTR | Interrupt Flag Outputs | Open-drain compatible (per datasheet note); indicate pending interrupt status per port |
| BUSYL, BUSYR | Busy Flag Terminals | Push-pull outputs (master mode) or inputs (slave mode); M/S pin configures arbitration role |
| M/S | Master/Slave Select | H = BUSY outputs asserted; L = BUSY inputs accepted; enables cascaded multi-device configurations |
| VCC, GND | Power & Ground | Multiple VCC/GND pins distributed for noise reduction; all must be connected per datasheet note |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous read/write operations on both ports without external arbitration logic or wait states |
| On-Chip Semaphore Logic | Eight hardware semaphore flags accessible via A0–A2; eliminates need for discrete latches or software polling |
| Automatic Power-Down | CE-controlled standby mode reduces active current to 0.2 mA typ (ISB3), supporting battery backup operation |
| Hardware BUSY Arbitration | Sub-20 ns BUSY assertion (tBAA ≤ 20 ns) prevents write collisions during port-to-port contention |
| MIL-PRF-38535 QML Compliance | Qualified for military applications with guaranteed operation from −55°C to +125°C and ESD > 2000 V |
Applications
| Radar Signal Processing | Digital Communications Baseband |
|---|---|
|
Use Scenario: Real-time FFT processing where DSP writes raw samples to memory while FPGA reads processed results. IC Role / Device Role / Timing Role: Dual-port RAM acts as zero-wait-state buffer between asymmetric processing units with independent clocks. Use Value: Eliminates FIFO latency and synchronization overhead; 70 ns access ensures deterministic throughput at 14 MHz sustained rate. |
Use Scenario: TDMA frame buffering in secure radio modems, where host processor loads next frame while modem transmits current frame. IC Role / Device Role / Timing Role: Memory serves as ping-pong buffer with hardware semaphore coordination between CPU and modem controller. Use Value: Prevents frame corruption during handover; BUSY flag guarantees atomic write-read transitions without software locks. |
| Avionics Flight Control Systems | Military Data Recorders |
|
Use Scenario: Redundant flight computers exchange sensor fusion data via shared memory with fail-safe arbitration. IC Role / Device Role / Timing Role: Acts as certified shared memory node with deterministic BUSY response under worst-case temperature extremes. Use Value: Meets DO-254 Level A timing constraints; 70 ns tRC and −55°C to +125°C operation ensure reliability in sealed avionics enclosures. |
Use Scenario: High-reliability black box recording where main power failure triggers automatic switch to backup battery. IC Role / Device Role / Timing Role: Provides non-volatile data retention at 2 V, preserving last 64 KB of telemetry during brownout events. Use Value: Guarantees crash data integrity without external NVSRAM or EEPROM; ISB3 = 0.2 mA extends battery life beyond 100 hours. |
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-70AXC | 70 ns access, 8K × 16 organization, 100-pin TQFP; no built-in semaphore logic | Requires external arbitration logic for semaphore use; wider data bus suits 16-bit processors | Select when 16-bit word width is mandatory and external logic is acceptable |
| AS7C38098B-70BIN | 70 ns access, 8K × 8, 64-pin TQFP; commercial temp only (0°C to +70°C); no MIL-PRF-38535 qualification | Lacks military temperature rating and QML compliance; lower cost for non-military deployments | Select for cost-sensitive industrial applications where extended temperature range is not required |
Compared with CY7C028V-70AXC and AS7C38098B-70BIN, the 7005L70GB uniquely integrates semaphore, interrupt, and BUSY arbitration logic in a military-qualified 64-pin TQFP, eliminating external components while guaranteeing operation across −55°C to +125°C.
Availability
7005L70GB is available at Aetrix Electronics and suitable for radar signal processing, avionics flight control, and military data recorders requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 7005L70GB 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 semiconductor company specializing in timing, memory interface, and RF solutions, now part of Renesas Electronics.
The 7005L70GB belongs to IDT's legacy high-reliability dual-port SRAM product line, designed specifically for military, aerospace, and industrial systems demanding concurrent memory access, hardware arbitration, and extended temperature operation.
FAQ
What is the maximum operating temperature range for the 7005L70GB?
The 7005L70GB is rated for military temperature range: −55°C to +125°C ambient, verified per MIL-PRF-38535 QML requirements. This specification applies to all AC and DC parameters including 70 ns tRC, BUSY timing, and data retention-no derating is required within this range.
Does the 7005L70GB support battery backup operation?
Yes, the 7005L70GB supports battery backup with guaranteed data retention at VCC = 2.0 V minimum (VDR), drawing only 0.2 mA typical in full standby (ISB3). This enables seamless transition to backup power during main supply interruption without data loss.
How does the BUSY arbitration logic work on the 7005L70GB?
The 7005L70GB uses hardware-based BUSY arbitration triggered by either address match (tBAA ≤ 20 ns) or CE timing priority (tAPS = 5 ns). When M/S = H, BUSYL/BUSYR are push-pull outputs that block writes on the contending port until resolution-no external logic is needed.
What package type is used for the 7005L70GB?
The 7005L70GB is supplied in a 64-pin thin quad flatpack (TQFP), designated PNG64, with 14 mm × 14 mm body and 1.4 mm height. It is lead-free and RoHS-compliant, matching footprint requirements for legacy IDT dual-port designs.
Can the 7005L70GB be used in master/slave configurations?
Yes, the 7005L70GB supports master/slave cascading via the M/S pin: M/S = H configures BUSY as output (master), M/S = L configures BUSY as input (slave). This enables expansion to 16-bit or wider data buses without additional glue logic.
7005L70GB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-BPGA
- 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:
- 70ns
- Access Time:
- 70 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 68-PGA (29.46x29.46)
7005L70GB FAQ
1.How can I place an order for 7005L70GB through Aetrix?
Please submit a Request for Quotation (RFQ) for 7005L70GB 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 7005L70GB reliable?
The price and inventory of 7005L70GB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7005L70GB is usually 5 days.
3.What payment methods are accepted for 7005L70GB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7005L70GB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7005L70GB?
7005L70GB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7005L70GB 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 7005L70GB?
For technical support, including 7005L70GB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7005L70GB requirements.
6.How does Aetrix verify that 7005L70GB is sourced from the original manufacturer or authorized distributors?
All 7005L70GB 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 7005L70GB meets industry standards.
7.What is the process for return or replacement of 7005L70GB?
All 7005L70GB units undergo pre-shipment inspection (PSI). If there is an issue with 7005L70GB, 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 7005L70GB part is unused and in its original packaging.
Return procedure for 7005L70GB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7005L70GB 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…
