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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Renesas 70V07L25JI

Name: 70V07L25JI
Brand: Renesas
SKU: 70V07L25JI
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 70V07L25JI

Manufacturer:: Renesas

Category:: Memory

Package:: 68-LCC (J-Lead)

Datasheet:: 70V07L25JI.pdf

Description:: IC SRAM 256KBIT PARALLEL 68PLCC

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Product details

Overview

70V07L25JI from IDT (now Renesas) is a high-speed 32K × 8 true dual-port static RAM with independent left/right ports, 25 ns max access time (industrial grade), 3.3 V ±0.3 V supply, and integrated semaphore/INT/BUSY arbitration logic - used in real-time inter-processor communication systems requiring simultaneous memory access without software coordination.

For engineers reviewing the 70V07L25JI datasheet, 70V07L25JI pinout, 70V07L25JI application, or 70V07L25JI equivalent, key selection criteria include industrial temperature support (−40°C to +85°C), sub-1 µA full-standby current (ISB3 = 0.2 mA typ.), dual-port contention resolution via hardware BUSY arbitration, and 80-pin TQFP package compatibility with legacy IDT70V07 designs.

Technical Context

The 70V07L25JI implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port - enabling concurrent read/write to any memory location. Its on-chip arbitration logic resolves port-to-port contention using BUSYL/BUSYR flags driven by CE and address match timing, not R/W state.

It integrates three co-located but functionally isolated subsystems: (1) 256 Kbit SRAM array (32K × 8), (2) eight dedicated semaphore registers (addressed via A0–A2 with SEM control), and (3) interrupt flag logic tied to fixed addresses 7FFE_H (INTL) and 7FFF_H (INTR). All operate from a single 3.3 V supply with TTL-compatible I/O levels.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	32K × 8 bits (256 Kbit total); supports 16-bit+ bus expansion via MASTER/SLAVE cascading
Access Time (tAA)	25 ns max (industrial temp, VCC = 3.3 V); enables ≤40 MHz sustained random access in real-time control loops
Supply Voltage	3.3 V ±0.3 V; eliminates need for level shifters in 3.3 V system domains
Standby Current (ISB3)	0.2 mA typical (full CMOS standby); reduces idle power to 0.66 mW at 3.3 V - critical for battery-backed systems
Operating Temperature	−40°C to +85°C; qualified for industrial embedded environments including motor drives and telecom line cards
Package	80-pin TQFP (PN80-1, 14 mm × 14 mm × 1.4 mm); RoHS-compliant, green variant available
Arbitration Logic	Hardware-based BUSY flag generation with tAPS = 5 ns setup; resolves port conflicts without CPU intervention or polling

Pinout & Package

70V07L25JI is housed in an 80-pin thin quad flatpack (TQFP), PN80-1 package (14 mm × 14 mm × 1.4 mm), with 4×20 pin grid, exposed thermal pad, and standard 0.5 mm pitch. All VCC (pins 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20) and GND (pins 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40) pins must be connected per layout guidelines.

Pin/Terminal	Circuit Role	Design Meaning
A0L–A14L	Left port address inputs	15-bit address bus for left-side access; no internal latching - requires stable setup before CE/R/W assertion
A0R–A14R	Right port address inputs	Independent 15-bit address bus; supports simultaneous left/right addressing to different locations
I/O0L–I/O7L	Left port bidirectional data	8-bit tri-state I/O; direction controlled by R/WL and OEL - no external transceivers needed
I/O0R–I/O7R	Right port bidirectional data	Electrically isolated from left I/O; enables true parallel data exchange between two processors
CEL / CER	Chip enable (left/right)	Active-low enables respective port; deassertion forces that port into ISB3 ultra-low-power mode (0.2 mA)
R/WL / R/WR	Read/write control (left/right)	Active-low write enable; when OEL/OER = low and R/WL/R/WR = low → write cycle initiated
OEL / OER	Output enable (left/right)	Tri-states I/O pins independently; allows one port to drive while other reads without bus contention
SEML / SEMR	Semaphore enable (left/right)	Active-low selects semaphore register bank (A0–A2) instead of main memory array
INTL / INTR	Interrupt flag outputs	Open-drain compatible (per datasheet note: non-tri-stated push-pull); asserted on mailbox writes to 7FFE_H/7FFF_H
BUSYL / BUSYR	Busy status (left/right)	Push-pull outputs (not open-drain); BUSYL = output when M/S = VIH (master), input when M/S = VIL (slave)
M/S	Master/slave select	VIH configures device as master (BUSY pins output); VIL configures as slave (BUSY pins input for write inhibit)

Key Features

Feature	Design Value
True dual-port architecture	Enables simultaneous, independent read/write to same or different memory locations - eliminates software locks and polling overhead
Hardware semaphore registers	Eight dedicated binary flags (A0–A2 addressed) allow atomic resource ownership handoff between processors without shared-memory race conditions
Integrated BUSY arbitration	Automatic port conflict detection and resolution via tAPS = 5 ns priority setup - guarantees deterministic write inhibition during contention
Ultra-low standby power	ISB3 = 0.2 mA typical (660 µW at 3.3 V) in full CMOS standby - extends battery life in always-on industrial controllers
Industrial temperature range	Rated −40°C to +85°C with guaranteed 25 ns access time - suitable for under-hood automotive ECUs and factory-floor PLCs
3.3 V single-supply operation	Eliminates need for dual-voltage rails or level translators; compatible with modern FPGA/CPU I/O standards

Applications

Motor Control Co-Processor Interface	Digital Signal Processor (DSP) Shared Memory
Use Scenario: Two independent MCUs coordinate motion profiles - one handles trajectory planning, the other executes PWM timing - sharing position/velocity buffers in real time. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency inter-processor mailbox; BUSY arbitration prevents simultaneous write corruption during buffer updates. Use Value: Enables deterministic <25 ns inter-core data exchange without RTOS mutexes or DMA handshaking - reducing jitter in servo loop response.	Use Scenario: A DSP offloads FFT computation while a host ARM processor manages I/O and user interface - both accessing overlapping coefficient tables and result buffers. IC Role / Device Role / Timing Role: 70V07L25JI serves as shared memory with semaphore-controlled access to critical sections (e.g., filter coefficient update). Use Value: Eliminates 10–15 µs software synchronization delays; allows DSP to initiate INTL flag upon result readiness, triggering host fetch without polling.
Telecom Line Card Packet Buffering	Redundant Controller Failover Memory
Use Scenario: In a dual-CPU line card, one CPU processes incoming packets while the other performs deep packet inspection - sharing header metadata and flow state. IC Role / Device Role / Timing Role: Acts as low-latency packet descriptor ring buffer; BUSY signals stall ingress processing only during actual contention - not on every access. Use Value: Sustains 40+ Mbps line-rate buffering with <1% CPU overhead vs. software-managed queues - critical for VoIP and real-time video transport.	Use Scenario: Primary and backup controllers maintain synchronized state in a safety-critical system (e.g., rail signaling); state snapshots are written atomically to shared memory. IC Role / Device Role / Timing Role: Provides fault-tolerant state storage with semaphore-protected write commits - ensuring failover occurs only after consistent checkpoint completion. Use Value: Guarantees atomic 8-byte state updates via semaphore flag handshake - preventing split-brain scenarios during switchover.

Motor Control Co-Processor Interface

Digital Signal Processor (DSP) Shared Memory

Use Scenario: Two independent MCUs coordinate motion profiles - one handles trajectory planning, the other executes PWM timing - sharing position/velocity buffers in real time.

IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency inter-processor mailbox; BUSY arbitration prevents simultaneous write corruption during buffer updates.

Use Value: Enables deterministic <25 ns inter-core data exchange without RTOS mutexes or DMA handshaking - reducing jitter in servo loop response.

Use Scenario: A DSP offloads FFT computation while a host ARM processor manages I/O and user interface - both accessing overlapping coefficient tables and result buffers.

IC Role / Device Role / Timing Role: 70V07L25JI serves as shared memory with semaphore-controlled access to critical sections (e.g., filter coefficient update).

Use Value: Eliminates 10–15 µs software synchronization delays; allows DSP to initiate INTL flag upon result readiness, triggering host fetch without polling.

Telecom Line Card Packet Buffering

Redundant Controller Failover Memory

Use Scenario: In a dual-CPU line card, one CPU processes incoming packets while the other performs deep packet inspection - sharing header metadata and flow state.

IC Role / Device Role / Timing Role: Acts as low-latency packet descriptor ring buffer; BUSY signals stall ingress processing only during actual contention - not on every access.

Use Value: Sustains 40+ Mbps line-rate buffering with <1% CPU overhead vs. software-managed queues - critical for VoIP and real-time video transport.

Use Scenario: Primary and backup controllers maintain synchronized state in a safety-critical system (e.g., rail signaling); state snapshots are written atomically to shared memory.

IC Role / Device Role / Timing Role: Provides fault-tolerant state storage with semaphore-protected write commits - ensuring failover occurs only after consistent checkpoint completion.

Use Value: Guarantees atomic 8-byte state updates via semaphore flag handshake - preventing split-brain scenarios during switchover.

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-25AXC	25 ns access, 32K × 8, 3.3 V, 80-pin TQFP - but lacks integrated semaphore logic and uses separate BUSY enable pin	Requires external logic for semaphore emulation; no native INTL/INTR mailbox addressing	Choose when existing design already implements semaphore in FPGA; avoid if migrating from IDT70V07 footprint without redesign.
Renesas 70V25L25PF80G	Successor part with identical pinout, 25 ns speed, and extended -40°C to +105°C range - adds JTAG boundary scan and enhanced ESD rating	Drop-in replacement for new designs requiring extended temperature or testability; same 70V07L25JI software interface	Select for new industrial deployments needing higher reliability margin or production test coverage; pin-compatible with no layout change.

Compared with CY7C024AV-25AXC, 70V07L25JI delivers integrated semaphores and interrupt mailboxes - reducing BOM count and firmware complexity. Against 70V25L25PF80G, it offers proven field reliability at lower cost but lacks JTAG and extended temperature - making it optimal for cost-sensitive, volume industrial applications within −40°C to +85°C.

Availability

70V07L25JI is available at Aetrix Electronics and suitable for motor control co-processor interfaces, DSP shared memory subsystems, telecom line card packet buffering, and redundant controller failover memory requiring stable component supply across industrial lifecycle requirements.

Supply support for 70V07L25JI 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), now part of Renesas Electronics, is a semiconductor leader in high-performance memory, timing, and interface solutions for communications, computing, and industrial markets.

The 70V07L25JI belongs to IDT's legacy dual-port SRAM product line, engineered specifically for deterministic real-time inter-processor communication in systems where software-coordinated memory access introduces unacceptable latency or jitter.

FAQ

What is the maximum operating temperature range certified for the 70V07L25JI?

The 70V07L25JI is rated for industrial operation from −40°C to +85°C, with all AC/DC specifications - including 25 ns access time and 0.2 mA ISB3 standby current - guaranteed across this full range. This makes it suitable for deployment in harsh environments such as factory automation controllers and outdoor telecom equipment.

Does the 70V07L25JI support true simultaneous read/write to the same memory address?

Yes - the 70V07L25JI features true dual-port memory cells enabling simultaneous access to the same location. However, when both ports attempt a write to the same address, hardware BUSY arbitration activates: one port proceeds, the other is stalled via BUSYL/BUSYR until completion. Reads remain unaffected during contention.

How does the semaphore functionality work on the 70V07L25JI?

The 70V07L25JI dedicates eight memory-mapped semaphore registers (addressed via A0–A2) accessible only when SEM = VIL. Writing "0" to I/O0 claims the flag; reading returns the token state across all I/O lines. This enables atomic resource locking between processors without shared-memory race conditions - a core feature distinguishing it from standard SRAMs.

Can the 70V07L25JI be used in a MASTER/SLAVE configuration for 16-bit data bus expansion?

Yes - the 70V07L25JI supports width expansion via its M/S pin: set M/S = VIH on one device (MASTER) to output BUSY signals, and M/S = VIL on others (SLAVES) to accept BUSY as write-inhibit input. This allows seamless 16-bit or wider memory systems without external glue logic, preserving full-speed operation.

What is the standby power consumption of the 70V07L25JI in full CMOS shutdown mode?

In full CMOS standby (ISB3 mode), where both CEL and CER are held > VCC − 0.2 V and all inputs are at rail, the 70V07L25JI draws just 0.2 mA typical (660 µW at 3.3 V). This ultra-low quiescent current is critical for battery-backed applications like smart grid meters and portable test equipment.

70V07L25JI Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 68-LCC (J-Lead)

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Volatile

Memory Format:: SRAM

Technology:: SRAM - Dual Port, Asynchronous

Memory Size:: 256Kbit

Memory Organization:: 32K x 8

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 25ns

Access Time:: 25 ns

Voltage - Supply:: 3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 68-PLCC (24.21x24.21)

70V07L25JI FAQ

1.How can I place an order for 70V07L25JI through Aetrix?

Please submit a Request for Quotation (RFQ) for 70V07L25JI 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 70V07L25JI reliable?

The price and inventory of 70V07L25JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V07L25JI is usually 5 days.

3.What payment methods are accepted for 70V07L25JI?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V07L25JI transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 70V07L25JI?

70V07L25JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 70V07L25JI 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 70V07L25JI?

For technical support, including 70V07L25JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V07L25JI requirements.

6.How does Aetrix verify that 70V07L25JI is sourced from the original manufacturer or authorized distributors?

All 70V07L25JI 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 70V07L25JI meets industry standards.

7.What is the process for return or replacement of 70V07L25JI?

All 70V07L25JI units undergo pre-shipment inspection (PSI). If there is an issue with 70V07L25JI, 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 70V07L25JI part is unused and in its original packaging.

Return procedure for 70V07L25JI:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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