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

Renesas 7027L15PFG

Name: 7027L15PFG
Brand: Renesas
SKU: 7027L15PFG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 7027L15PFG

Manufacturer:: Renesas

Category:: Memory

Package:: 100-LQFP

Datasheet:: 7027L15PFG.pdf

Description:: IC SRAM 512KBIT PARALLEL 100TQFP

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Product details

Overview

7027L15PFG from IDT (now Renesas) is a high-speed 32K × 16 dual-port static RAM with true simultaneous access to the same memory location from independent left and right ports, 15 ns max read cycle time (commercial grade), 1 mW typical standby power, and TTL-compatible 5 V ±10% operation - deployed in real-time DSP co-processing, industrial motion controllers, and legacy avionics data buffers.

For engineers reviewing the 7027L15PFG datasheet, 7027L15PFG pinout, 7027L15PFG application, or 7027L15PFG equivalent, this page delivers verified timing specs, master/slave arbitration behavior, BUSY/INT flag logic, semaphore signaling implementation, and TQFP-100 package–specific I/O mapping - all confirmed against IDT DSC 3199/12 (June 2019) and Renesas product documentation.

Technical Context

The 7027L15PFG implements fully asynchronous dual-port architecture with on-chip arbitration logic that resolves contention via address-match–driven BUSY assertion (M/S = VIH) or CE-driven arbitration (M/S = VIL), supporting both master and slave configurations. Its semaphore subsystem uses A0–A2 addressing to control eight shared flags accessible via I/O0 write and full I/O0–I/O15 read.

It features separate upper-byte (UB/UBR) and lower-byte (LB/LBR) enables for 8-bit bus matching, dual chip enables (CE0/CE1 per port) for depth expansion without external logic, and integrated interrupt generation triggered by writes to dedicated mailbox addresses (7FFE_H for INTL, 7FFF_H for INTR).

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	32K × 16 bits (512 Kbit), dual-port SRAM with independent left/right address/data/control paths
Access Time (tRC)	15 ns max (commercial temperature range, 0°C to +70°C), enabling 66.7 MHz sustained random access
Supply Voltage	5.0 V ±10% (4.5 V to 5.5 V), single-rail TTL-compatible operation with no level-shifting required
Standby Current (ISB3)	0.2 mA typical (full CMOS standby, both ports deselected), critical for low-power system sleep modes
Operating Temperature	Commercial grade: 0°C to +70°C - validated for non-industrial embedded systems with stable thermal environments
Package	100-pin Thin Quad Flatpack (TQFP), 14 mm × 14 mm × 1.4 mm body, lead-free and RoHS-compliant
BUSY Arbitration	Hardware-enforced port-to-port conflict resolution: tBDD ≤ 15 ns ensures deterministic data validity after contention

Pinout & Package

7027L15PFG is housed in a 100-pin TQFP (Thin Quad Flatpack) package with 0.5 mm pitch, 14 mm × 14 mm footprint, and exposed thermal pad (not electrically connected). Pin numbering follows standard counter-clockwise top-view layout starting at pin 1 (index corner).

Pin/Terminal	Circuit Role	Design Meaning
A0L–A14L	Left port address inputs	15-bit address bus for left-side memory access; supports full 32K addressing independently of right port
A0R–A14R	Right port address inputs	15-bit address bus for right-side access; concurrent with left port - no interlock required
I/O0L–I/O15L	Left port bidirectional data	16-bit data path; UB/LB controls byte granularity; tri-state during deselect or OE high
I/O0R–I/O15R	Right port bidirectional data	16-bit data path; identical byte-select capability; fully isolated from left port I/O drivers
CE0L, CE1L	Left port chip enables	TTL/CMOS-compatible enables; CE0L active-low primary enable, CE1L secondary for depth expansion
CE0R, CE1R	Right port chip enables	Independent enables allow asymmetric port activation - e.g., left active while right in standby
R/WL, R/WR	Read/write direction control	Active-low signals determine data flow direction per port; no internal latching - fully combinatorial
OEL, OER	Output enable	Tri-states respective I/O buses when high; allows shared bus usage with other devices
UBL, UBR	Upper-byte select	Enables I/O8–I/O15 only; used with LB/LBR for 8-bit peripheral interfacing or bus-width adaptation
LBL, LBR	Lower-byte select	Enables I/O0–I/O7 only; complements UB/UBR for byte-level granularity in mixed-width systems
SEML, SEMR	Semaphore enable	Active-low enables access to 3-bit–addressed semaphore flags (A0–A2); CE must be high to activate
INTL, INTR	Interrupt flags	Open-collector–compatible totem-pole outputs; asserted low on mailbox write (7FFE_H/7FFF_H)
BUSYL, BUSYR	Busy flags	Push-pull outputs (master) or inputs (slave); indicate port contention; not tri-stated - always driven
M/S	Master/slave select	VIH configures as master (BUSY outputs); VIL configures as slave (BUSY inputs); sets arbitration mode
VCC, GND	Power and ground	Multiple VCC/GND pins distributed across package for low-impedance supply routing and noise reduction

Key Features

Feature	Design Value
True dual-port memory cells	Enables simultaneous read/write to identical addresses from left and right ports - essential for lock-free inter-processor communication
On-chip semaphore logic	Eight hardware-managed flags accessed via A0–A2 and I/O0, eliminating need for external mutex circuitry in multi-CPU systems
Master/slave cascading support	M/S pin configures device as master (generates BUSY) or slave (accepts BUSY), enabling seamless 32-bit+ bus expansion without glue logic
Full asynchronous operation	No clock required - all timing governed by setup/hold relationships between CE, R/W, OE, and address; simplifies timing closure in mixed-signal designs
Low-power standby mode	0.2 mA typical ISB3 current with both ports fully deselected - reduces system idle power by >99% vs. active operation
Hardware port arbitration	Deterministic BUSY assertion based on address match (tAPS = 5 ns) or CE timing, guaranteeing data integrity without software overhead

Applications

Real-Time DSP Co-Processing	Industrial Motion Controller Buffer
Use Scenario: Two independent processors - one running motor control algorithms, the other handling HMI and diagnostics - share sensor data and command queues via shared memory. IC Role / Device Role / Timing Role: 7027L15PFG serves as the zero-latency, contention-managed shared RAM between ARM and FPGA domains, with BUSY arbitration preventing write collisions on joint trajectory tables. Use Value: 15 ns access time enables sub-100 ns inter-processor message latency; semaphore flags coordinate access to 16-bit position registers without CPU polling.	Use Scenario: PLC-based motion controller synchronizes servo drives using time-critical position setpoints updated at 10 kHz, requiring deterministic memory access across safety and motion cores. IC Role / Device Role / Timing Role: 7027L15PFG acts as the dual-port buffer between safety-certified motion kernel and real-time Ethernet interface, with INTL/INTR flags signaling new command batches. Use Value: Hardware interrupt generation on mailbox writes eliminates polling overhead; 0.2 mA standby current extends battery-backed runtime during safe-stop states.
Legacy Avionics Data Buffer	Test Equipment Pattern Memory
Use Scenario: Retrofit upgrade of flight management system (FMS) replaces aging discrete SRAM with integrated dual-port solution to support ARINC 429 and MIL-STD-1553B bus bridging. IC Role / Device Role / Timing Role: 7027L15PFG functions as the protocol-agnostic data staging buffer, accepting 16-bit words from ARINC receiver (left port) and feeding MIL-STD-1553B transmitter (right port). Use Value: Separate UB/LB enables allow byte-aligned framing for both protocols; 5 V TTL compatibility avoids level-shifter components in legacy backplane designs.	Use Scenario: Automated test equipment (ATE) stores stimulus/response patterns in high-speed memory, where pattern generator (left port) and comparator (right port) operate concurrently. IC Role / Device Role / Timing Role: 7027L15PFG provides the shared pattern store accessed simultaneously by waveform synthesis logic and signature analysis logic - no arbitration delay in pass/fail decision path. Use Value: tBDD ≤ 15 ns guarantees valid read data within one cycle after write contention; 100-pin TQFP fits legacy ATE PCB footprints without redesign.

Real-Time DSP Co-Processing

Industrial Motion Controller Buffer

Use Scenario: Two independent processors - one running motor control algorithms, the other handling HMI and diagnostics - share sensor data and command queues via shared memory.

IC Role / Device Role / Timing Role: 7027L15PFG serves as the zero-latency, contention-managed shared RAM between ARM and FPGA domains, with BUSY arbitration preventing write collisions on joint trajectory tables.

Use Value: 15 ns access time enables sub-100 ns inter-processor message latency; semaphore flags coordinate access to 16-bit position registers without CPU polling.

Use Scenario: PLC-based motion controller synchronizes servo drives using time-critical position setpoints updated at 10 kHz, requiring deterministic memory access across safety and motion cores.

IC Role / Device Role / Timing Role: 7027L15PFG acts as the dual-port buffer between safety-certified motion kernel and real-time Ethernet interface, with INTL/INTR flags signaling new command batches.

Use Value: Hardware interrupt generation on mailbox writes eliminates polling overhead; 0.2 mA standby current extends battery-backed runtime during safe-stop states.

Legacy Avionics Data Buffer

Test Equipment Pattern Memory

Use Scenario: Retrofit upgrade of flight management system (FMS) replaces aging discrete SRAM with integrated dual-port solution to support ARINC 429 and MIL-STD-1553B bus bridging.

IC Role / Device Role / Timing Role: 7027L15PFG functions as the protocol-agnostic data staging buffer, accepting 16-bit words from ARINC receiver (left port) and feeding MIL-STD-1553B transmitter (right port).

Use Value: Separate UB/LB enables allow byte-aligned framing for both protocols; 5 V TTL compatibility avoids level-shifter components in legacy backplane designs.

Use Scenario: Automated test equipment (ATE) stores stimulus/response patterns in high-speed memory, where pattern generator (left port) and comparator (right port) operate concurrently.

IC Role / Device Role / Timing Role: 7027L15PFG provides the shared pattern store accessed simultaneously by waveform synthesis logic and signature analysis logic - no arbitration delay in pass/fail decision path.

Use Value: tBDD ≤ 15 ns guarantees valid read data within one cycle after write contention; 100-pin TQFP fits legacy ATE PCB footprints without redesign.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-port SRAM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY7C1362BV18	18-bit bus width, 2.5 V core / 3.3 V I/O, 12 ns access, QFN-128 package	Requires level translation for 5 V systems; higher density but incompatible voltage domain	Select only if migrating to low-voltage design with wider data path and available board space for larger QFN
AS7C33256P	32K × 16, 15 ns, 5 V, but single-port only; no BUSY/INT/semaphore logic	Lacks hardware arbitration - requires external logic or software coordination for multi-processor use	Choose only for cost-sensitive, single-controller applications where dual-port features are unused

Compared with CY7C1362BV18 and AS7C33256P, the 7027L15PFG uniquely delivers 5 V–native dual-port operation with integrated arbitration, interrupt, and semaphore functions in a drop-in TQFP-100 footprint - making it irreplaceable for legacy 5 V real-time systems requiring hardware-coordinated memory sharing.

Availability

7027L15PFG is available at Aetrix Electronics and suitable for real-time DSP co-processing, industrial motion control, and legacy avionics applications requiring stable component supply, long-term obsolescence mitigation, and RoHS-compliant sourcing.

Supply support for 7027L15PFG 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 company specializing in high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.

The 7027L15PFG belongs to IDT's legacy dual-port SRAM product line, designed specifically for deterministic, low-latency inter-processor communication in 5 V embedded systems where hardware arbitration and interrupt signaling eliminate software synchronization overhead.

FAQ

What is the maximum operating temperature range for the 7027L15PFG?

The 7027L15PFG is rated for commercial temperature operation only: 0°C to +70°C. It is not qualified for industrial (–40°C to +85°C) use - that capability is reserved for the 7027L20xxx and faster variants explicitly marked "& Ind" in the datasheet. Using the 7027L15PFG outside its specified range may result in timing violations or increased standby current.

Does the 7027L15PFG support true simultaneous read-write to the same address?

Yes, the 7027L15PFG implements true dual-port SRAM cells that permit concurrent read and write operations to the identical memory location - one port reading while the other writes - with no internal arbitration delay. This behavior is guaranteed by the cell architecture and confirmed in the Functional Block Diagram and Truth Table II of the DSC 3199/12 datasheet.

How does the BUSY signal behave when the 7027L15PFG is configured as a slave?

When M/S = VIL, the 7027L15PFG operates as a slave: BUSYL and BUSYR become inputs (not outputs), and an external master's BUSY signal applied to either pin will inhibit writes on the corresponding port. The device does not drive BUSY in slave mode - it responds to incoming BUSY to prevent conflicting writes during arbitration.

Can the 7027L15PFG be used in a 32-bit data path configuration?

Yes - the 7027L15PFG supports 32-bit expansion via master/slave cascading. One device is configured as master (M/S = VIH), another as slave (M/S = VIL); the master's BUSY output connects to the slave's BUSY input, and the M/S pin selects which side generates the BUSY flag. No external logic is needed, as documented in the "MASTER/SLAVE Dual-Port RAM approach" section.

What are the valid mailbox addresses for interrupt generation in the 7027L15PFG?

The 7027L15PFG uses fixed addresses for interrupt triggering: writing to 7FFE_H (hex) with the right port asserts INTL (left interrupt flag), and writing to 7FFF_H with the left port asserts INTR (right interrupt flag). These locations are hardwired in the interrupt logic and cannot be remapped - confirmed in Truth Table IV and the Functional Description section of DSC 3199/12.

7027L15PFG Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 100-LQFP

Packaging:: Tray

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Volatile

Memory Format:: SRAM

Technology:: SRAM - Dual Port, Asynchronous

Memory Size:: 512Kbit

Memory Organization:: 32K x 16

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 15ns

Access Time:: 15 ns

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 100-TQFP (14x14)

7027L15PFG FAQ

1.How can I place an order for 7027L15PFG through Aetrix?

Please submit a Request for Quotation (RFQ) for 7027L15PFG 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 7027L15PFG reliable?

The price and inventory of 7027L15PFG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7027L15PFG is usually 5 days.

3.What payment methods are accepted for 7027L15PFG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7027L15PFG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 7027L15PFG?

7027L15PFG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 7027L15PFG 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 7027L15PFG?

For technical support, including 7027L15PFG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7027L15PFG requirements.

6.How does Aetrix verify that 7027L15PFG is sourced from the original manufacturer or authorized distributors?

All 7027L15PFG 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 7027L15PFG meets industry standards.

7.What is the process for return or replacement of 7027L15PFG?

All 7027L15PFG units undergo pre-shipment inspection (PSI). If there is an issue with 7027L15PFG, 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 7027L15PFG part is unused and in its original packaging.

Return procedure for 7027L15PFG:

1.Submit a request within 90 days.

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

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