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

Renesas UPD46365362BF1-E40Y-EQ1-A

Name: UPD46365362BF1-E40Y-EQ1-A
Brand: Renesas
SKU: UPD46365362BF1-E40Y-EQ1-A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: UPD46365362BF1-E40Y-EQ1-A

Manufacturer:: Renesas

Category:: Memory

Package:: -

Datasheet:: UPD46365362BF1-E40Y-EQ1-A.pdf

Description:: QDR SRAM, 1MX36, 0.45NS

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Product details

Overview

UPD46365362BF1-E40Y-EQ1-A from Renesas Electronics is a 1,048,576-word × 36-bit synchronous Quad Data Rate II (QDR II) SRAM with 2-word burst operation, HSTL interface, 1.8 V core supply, and 4.0 ns clock cycle time (250 MHz). It features separate read/write ports, PLL-based output timing control, and clock-stop capability for low-power standby. It is used in high-speed networking packet buffers and FPGA co-processor memory subsystems.

For engineers reviewing the UPD46365362BF1-E40Y-EQ1-A datasheet, UPD46365362BF1-E40Y-EQ1-A pinout, UPD46365362BF1-E40Y-EQ1-A application, or UPD46365362BF1-E40Y-EQ1-A equivalent, key selection considerations include its 36-bit wide bus, -40°C to +85°C industrial temperature rating, 165-pin plastic BGA (13 × 15 mm) package, HSTL I/O compatibility, and dual-clock (K/K# input, C/C# output) timing architecture.

Technical Context

The UPD46365362BF1-E40Y-EQ1-A implements a true dual-port QDR II architecture with independent read and write data paths enabling concurrent transactions. Its internal burst counter and synchronous address/data registers are latched on rising edges of K (read/control) and K# (write/address), while output data is synchronized to C/C# rising edges for precise flight-time matching.

It integrates a PLL for wide output data valid window and supports user-programmable output impedance (35–70 Ω) via ZQ calibration. The device uses full-CMOS six-transistor memory cells and includes JTAG 1149.1 test access, DLL disable (DLL#) for debug-mode operation, and internally self-timed write control.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	1,048,576 words × 36 bits = 36 M-bit density; enables single-chip 36-bit-wide data path for high-throughput buffering.
Clock Cycle Time	4.0 ns (250 MHz); defines maximum sustained transaction rate for DDR read/write operations.
Supply Voltage	1.8 V ±0.1 V core (VDD); powers logic and memory array; requires stable regulation to avoid PLL unlock or undefined behavior.
I/O Interface	HSTL Class I compliant; ensures signal integrity at 250 MHz with controlled slew and termination-matched outputs.
Operating Temperature	-40°C to +85°C; qualified for industrial embedded systems including telecom infrastructure and motor control.
Package	165-pin plastic BGA (13 mm × 15 mm); supports high-density PCB layout with 0.8 mm ball pitch and thermal performance θ_ja = 13.2°C/W @ 1 m/s airflow.
Power Consumption	640 mA typical operating current (IDD) at 250 MHz, -40°C to +85°C; enables thermal-aware system power budgeting.

Pinout & Package

UPD46365362BF1-E40Y-EQ1-A is housed in a 165-pin plastic BGA (13 × 15 mm, 0.8 mm pitch) with exposed thermal pad. Pin functions follow JEDEC-standard HSTL I/O definitions and include dedicated echo clocks (CQ/CQ#), byte-write enables (BW0#–BW3#), and JTAG test access (TMS/TCK/TDI/TDO).

Pin/Terminal	Circuit Role	Design Meaning
K, K#	Synchronous input clock pair	K rising edge latches read addresses/controls; K# rising edge latches write addresses/data; 180° phase alignment required for timing margin.
C, C#	Output clock pair	C# rising edge times first output word; C rising edge times second output word; enables precise data-to-clock skew matching at receiver.
R#, W#	Read and write strobes	Active-low synchronous commands; both HIGH = NOP; must meet setup/hold relative to K rising edge.
BW0#–BW3#	Byte write enable inputs	Four independent active-low signals controlling 9-bit sub-banks; allows partial 36-bit writes without read-modify-write overhead.
D0–D35	Synchronous data inputs	36-bit parallel input bus registered on K/K# rising edges; supports burst-aligned write data delivery.
Q0–Q35	Synchronous data outputs	36-bit parallel output bus delivered on C/C# rising edges; tightly matched to CQ/CQ# for data-valid indication.
ZQ	Output impedance calibration input	Connects to external resistor to ground to set Q/CQ/CQ# output impedance to 0.2 × RQ; recalibrates every 20 μs post-power-up.
DLL#	PLL disable input	Active-low signal bypassing PLL for low-frequency debug operation (RL = 1.0); normal use requires tie-high to VDDQ.

Key Features

Feature	Design Value
Separate read/write data ports	Enables simultaneous read and write transactions without arbitration delay-critical for pipeline-efficient packet processing.
2-word burst operation	Guarantees 100% bus utilization per clock cycle; eliminates idle cycles between consecutive 36-bit transfers.
User-programmable output impedance (35–70 Ω)	Allows dynamic tuning to match PCB trace impedance without external resistors-reducing BOM count and layout complexity.
Internally self-timed write control	Removes need for external write pulse generation; simplifies controller logic and guarantees reliable write completion across voltage/temperature.
Clock-stop capability (20 μs resume)	Supports rapid low-power state entry/exit in burst-oriented traffic patterns-essential for energy-constrained network edge devices.

Applications

High-Speed Network Packet Buffer	FPGA Co-Processor Memory
Use Scenario: Storing ingress/egress packet headers and payloads in Layer 2/3 switches with line-rate throughput. IC Role / Device Role / Timing Role: Dual-port QDR II SRAM serving as zero-wait-state buffer between MAC and traffic manager; C/C# clocks aligned to PHY reference. Use Value: Concurrent read/write eliminates bottleneck during back-to-back packet forwarding; 36-bit width matches common packet header sizes.	Use Scenario: Providing low-latency, high-bandwidth memory for FPGA-based digital signal processing accelerators. IC Role / Device Role / Timing Role: Off-chip memory extension synchronized to FPGA fabric clock domain via K/K#; CQ/CQ# used for data-valid handshake. Use Value: 250 MHz DDR operation delivers 18 Gbps effective bandwidth; HSTL interface ensures clean signal integrity at FPGA I/O banks.
Industrial Real-Time Control Buffer	Test Equipment Pattern Memory
Use Scenario: Capturing and replaying sensor data streams in servo drive controllers requiring deterministic latency. IC Role / Device Role / Timing Role: Burst-access memory storing time-stamped encoder samples; clock-stop mode engaged between motion phases. Use Value: -40°C to +85°C rating ensures reliability in motor enclosures; self-timed write avoids timing violations under voltage droop.	Use Scenario: Storing stimulus/response vectors in automated test equipment (ATE) for semiconductor wafer probing. IC Role / Device Role / Timing Role: High-fidelity pattern storage with precise edge-aligned output; ZQ calibration maintains consistent drive strength across temperature sweeps. Use Value: 4.0 ns cycle time supports >250 MHz vector rates; JTAG 1149.1 support enables in-system verification and boundary scan.

High-Speed Network Packet Buffer

FPGA Co-Processor Memory

Use Scenario: Storing ingress/egress packet headers and payloads in Layer 2/3 switches with line-rate throughput.

IC Role / Device Role / Timing Role: Dual-port QDR II SRAM serving as zero-wait-state buffer between MAC and traffic manager; C/C# clocks aligned to PHY reference.

Use Value: Concurrent read/write eliminates bottleneck during back-to-back packet forwarding; 36-bit width matches common packet header sizes.

Use Scenario: Providing low-latency, high-bandwidth memory for FPGA-based digital signal processing accelerators.

IC Role / Device Role / Timing Role: Off-chip memory extension synchronized to FPGA fabric clock domain via K/K#; CQ/CQ# used for data-valid handshake.

Use Value: 250 MHz DDR operation delivers 18 Gbps effective bandwidth; HSTL interface ensures clean signal integrity at FPGA I/O banks.

Industrial Real-Time Control Buffer

Test Equipment Pattern Memory

Use Scenario: Capturing and replaying sensor data streams in servo drive controllers requiring deterministic latency.

IC Role / Device Role / Timing Role: Burst-access memory storing time-stamped encoder samples; clock-stop mode engaged between motion phases.

Use Value: -40°C to +85°C rating ensures reliability in motor enclosures; self-timed write avoids timing violations under voltage droop.

Use Scenario: Storing stimulus/response vectors in automated test equipment (ATE) for semiconductor wafer probing.

IC Role / Device Role / Timing Role: High-fidelity pattern storage with precise edge-aligned output; ZQ calibration maintains consistent drive strength across temperature sweeps.

Use Value: 4.0 ns cycle time supports >250 MHz vector rates; JTAG 1149.1 support enables in-system verification and boundary scan.

Equivalent & Alternatives

The following parts are listed as comparable options for similar QDR II SRAM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY7C2665KV18-400BZXC	1M × 18 organization; 250 MHz; 165-pin BGA; same VDD/VDDQ, HSTL, and -40°C to +85°C rating.	Half the data width (18-bit vs. 36-bit); requires two devices for equivalent bus width; different pinout and BWx# mapping.	Select when 18-bit interface suffices or board layout accommodates dual-device placement with interleave control.
AS7C336100B-20JIN	1M × 36 organization; 200 MHz; 165-pin BGA; 1.8 V core; but uses SSTL-18 I/O, not HSTL.	Slower max frequency (200 MHz vs. 250 MHz); incompatible I/O standard requires level-shifting or redesign of termination network.	Select only if system timing margin permits 200 MHz operation and SSTL-18 receivers are already present on the board.

Compared with CY7C2665KV18-400BZXC and AS7C336100B-20JIN, UPD46365362BF1-E40Y-EQ1-A delivers native 36-bit width at 250 MHz with HSTL compliance-reducing component count and eliminating I/O translation, making it optimal for space-constrained, high-throughput industrial and networking designs.

Availability

UPD46365362BF1-E40Y-EQ1-A is available at Aetrix Electronics and suitable for high-speed networking packet buffers, FPGA co-processor memory subsystems, industrial real-time control buffers, and automated test equipment pattern storage requiring stable component supply across extended temperature ranges.

Supply support for UPD46365362BF1-E40Y-EQ1-A 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

Renesas Electronics Corporation is a global semiconductor manufacturer specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.

The UPD46365362BF1-E40Y-EQ1-A belongs to Renesas' QDR II SRAM product line, designed specifically for high-bandwidth, low-latency buffering in networking, telecommunications, and real-time embedded systems demanding deterministic DDR timing and industrial-grade reliability.

FAQ

What is the maximum operating frequency of the UPD46365362BF1-E40Y-EQ1-A?

The UPD46365362BF1-E40Y-EQ1-A supports a maximum clock cycle time of 4.0 ns, corresponding to a 250 MHz operating frequency. This is specified under industrial temperature conditions (-40°C to +85°C) and requires stable 1.8 V ±0.1 V supply and proper PLL lock. The device achieves this using its dual-edge clocking architecture with K/K# inputs and C/C# outputs.

Does the UPD46365362BF1-E40Y-EQ1-A support partial writes?

Yes, the UPD46365362BF1-E40Y-EQ1-A supports partial writes via four active-low byte write enable signals: BW0#, BW1#, BW2#, and BW3#. Each controls a 9-bit sub-bank of the 36-bit data bus, allowing selective writing of any combination of 9-bit segments without requiring read-modify-write cycles.

How does the ZQ pin function on the UPD46365362BF1-E40Y-EQ1-A?

The ZQ pin on the UPD46365362BF1-E40Y-EQ1-A is an input used for output impedance calibration. When connected to a precision resistor to ground, it sets Q, CQ, and CQ# driver impedance to 0.2 × RQ. Calibration occurs automatically every 20 μs after power-up and adjusts for voltage/temperature drift-ensuring consistent signal integrity across operating conditions.

Can the UPD46365362BF1-E40Y-EQ1-A operate without the PLL enabled?

Yes, the UPD46365362BF1-E40Y-EQ1-A can operate with the PLL disabled by asserting DLL# LOW. In this mode, read latency reduces to 1.0 clock cycle, enabling low-frequency debug operation. However, AC/DC electrical characteristics are not guaranteed, and full timing compliance requires DLL# tied HIGH to VDDQ during normal operation.

What is the purpose of the CQ and CQ# pins on the UPD46365362BF1-E40Y-EQ1-A?

The CQ and CQ# pins on the UPD46365362BF1-E40Y-EQ1-A are synchronous echo clock outputs tightly matched to data output timing. Their rising edges indicate valid data windows for Q0–Q35, providing a hardware handshake for receivers. Unlike C/C#, CQ/CQ# remain active even when outputs are tristated and stop only when K/K# clocks halt.

UPD46365362BF1-E40Y-EQ1-A Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Programmable:: Not Verified

Memory Type:: -

Memory Format:: -

Technology:: -

Memory Size:: -

Memory Organization:: -

Memory Interface:: -

Clock Frequency:: -

Write Cycle Time - Word, Page:: -

Access Time:: -

Voltage - Supply:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

UPD46365362BF1-E40Y-EQ1-A FAQ

1.How can I place an order for UPD46365362BF1-E40Y-EQ1-A through Aetrix?

Please submit a Request for Quotation (RFQ) for UPD46365362BF1-E40Y-EQ1-A 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 UPD46365362BF1-E40Y-EQ1-A reliable?

The price and inventory of UPD46365362BF1-E40Y-EQ1-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD46365362BF1-E40Y-EQ1-A is usually 5 days.

3.What payment methods are accepted for UPD46365362BF1-E40Y-EQ1-A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD46365362BF1-E40Y-EQ1-A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for UPD46365362BF1-E40Y-EQ1-A?

UPD46365362BF1-E40Y-EQ1-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your UPD46365362BF1-E40Y-EQ1-A 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 UPD46365362BF1-E40Y-EQ1-A?

For technical support, including UPD46365362BF1-E40Y-EQ1-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD46365362BF1-E40Y-EQ1-A requirements.

6.How does Aetrix verify that UPD46365362BF1-E40Y-EQ1-A is sourced from the original manufacturer or authorized distributors?

All UPD46365362BF1-E40Y-EQ1-A 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 UPD46365362BF1-E40Y-EQ1-A meets industry standards.

7.What is the process for return or replacement of UPD46365362BF1-E40Y-EQ1-A?

All UPD46365362BF1-E40Y-EQ1-A units undergo pre-shipment inspection (PSI). If there is an issue with UPD46365362BF1-E40Y-EQ1-A, 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 UPD46365362BF1-E40Y-EQ1-A part is unused and in its original packaging.

Return procedure for UPD46365362BF1-E40Y-EQ1-A:

1.Submit a request within 90 days.

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

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