My Inquiry
My Account
Renesas AT45DB641E-CCUN-T
- Part No.:
- AT45DB641E-CCUN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 9-UBGA
- Datasheet:
-
AT45DB641E-CCUN-T.pdf
- Description:
- IC FLASH 64MBIT SPI 85MHZ 9UBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,120
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT45DB641E-CCUN-T from Renesas Electronics is a 64-Mbit serial DataFlash memory with 2-Mbit extra capacity, supporting SPI modes 0 and 3 at up to 85 MHz, featuring dual 256/264-byte SRAM buffers, 400 nA ultra-deep power-down current, and factory-configurable 256-byte page size. It enables continuous streaming in voice recording, firmware storage, and embedded data logging systems.
For engineers reviewing the AT45DB641E-CCUN-T datasheet, AT45DB641E-CCUN-T pinout, AT45DB641E-CCUN-T application, or AT45DB641E-CCUN-T equivalent, key selection criteria include SPI timing compliance (tV ≤ 8 ns), low-voltage operation (1.7–3.6 V), sector lockdown security, and buffer-assisted interleaved write capability for real-time data capture.
Technical Context
The AT45DB641E-CCUN-T implements a sequential-access Flash architecture with two independent SRAM buffers enabling concurrent read-from-buffer while programming main memory. Its RapidS™ interface supports high-frequency continuous array reads using opcodes 0Bh and 1Bh, achieving up to 85 MHz clock rates with tV ≤ 8 ns.
It features hardware- and software-controlled sector protection, including individual sector lockdown (permanent read-only) and a 128-byte OTP security register (64 bytes factory-unique ID + 64 bytes user-programmable). Erase granularity spans page (256/264 B), block (2 KB), sector (256 kB), and full chip (64 Mbit), all self-timed without external high-voltage supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Capacity | 64 Mbit main memory + 2 Mbit extra space; organized as 32,768 pages of 256 or 264 bytes - enables flexible firmware partitioning and metadata storage. |
| Supply Voltage | 1.7 V to 3.6 V single supply - supports direct integration with low-power microcontrollers and battery-operated devices. |
| Max Clock Frequency | 85 MHz (RapidS mode) - delivers sustained throughput >10 MB/s for high-speed audio/video buffering. |
| Access Time | tV ≤ 8 ns clock-to-output - ensures deterministic timing for real-time control loops interfacing via SPI. |
| Power-Down Current | 400 nA ultra-deep power-down (typical) - extends battery life in always-on sensor nodes and wearables. |
| Endurance & Retention | 100,000 program/erase cycles per page; 20-year data retention - suitable for field-upgradable industrial controllers. |
| Operating Temperature | −40°C to +85°C - certified for full industrial environment deployment without derating. |
Pinout & Package
AT45DB641E-CCUN-T is packaged in an 8-pad Ultra-thin DFN (5 × 6 × 0.6 mm), RoHS-compliant, with exposed thermal pad electrically unconnected (NC or GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; initiates command sequence on high-to-low transition and terminates on low-to-high - required for multi-device SPI bus arbitration. |
| SCK | Serial Clock | Master-generated clock; latches SI on rising edge, drives SO on falling edge - defines timing budget for setup/hold compliance. |
| SI | Serial Input | Command/address/data input path; ignored when CS is high - supports daisy-chained configuration with minimal signal routing. |
| SO | Serial Output | Data output path; high-impedance when CS is deasserted - allows shared bus topology with other SPI peripherals. |
| WP | Write Protect | Hardware-enabled sector protection; active-low assertion locks protected sectors - provides tamper-resistant firmware update guardrails. |
| RESET | Reset Input | Active-low hardware reset; forces device into known state without power cycle - critical for fail-safe recovery in automotive ECUs. |
| VCC | Power Supply | 1.7–3.6 V core supply; powers logic, memory, and I/O - eliminates need for level shifters in mixed-voltage systems. |
| GND | Ground | Reference return path for VCC and I/O signals - must be low-impedance connection to minimize noise coupling into sensitive SPI lines. |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM Buffers | Two independent 256/264-byte buffers allow simultaneous receive-to-buffer and buffer-to-main-memory programming - eliminates write latency gaps in continuous data streams. |
| RapidS™ Interface | High-frequency continuous read mode (opcodes 0Bh/1Bh) enables 85 MHz operation with 8 ns tV - meets real-time audio frame buffering deadlines. |
| Configurable Page Size | Factory-set 256-byte page size (vs default 264-byte) optimizes alignment for fixed-size packet protocols like CAN FD or Modbus RTU. |
| Sector Lockdown | One-time programmable sector lockdown makes selected memory regions permanently read-only - enforces bootloader integrity in certified medical devices. |
| Ultra-Low Power Modes | 400 nA ultra-deep power-down and 5 µA deep power-down states reduce quiescent consumption by >99% vs active mode - extends shelf life of IoT edge nodes. |
Applications
| Voice Recording System | Firmware Storage for MCU |
|---|---|
Use Scenario: Continuous digitized voice capture in portable dictation devices with no gap between recording segments. IC Role / Device Role / Timing Role: Primary nonvolatile buffer memory managing interleaved SRAM-to-Flash transfers during live sampling. Use Value: Dual-buffer architecture sustains 16-bit/44.1 kHz audio streaming without dropouts, even during background erase operations. | Use Scenario: Storing and updating application firmware in industrial PLCs with field upgrade capability. IC Role / Device Role / Timing Role: Secure boot image repository with hardware write-protection for bootloader region. Use Value: Sector lockdown prevents accidental or malicious overwriting of critical startup code, ensuring deterministic boot behavior. |
| Data Logger for Environmental Sensors | Medical Diagnostic Equipment |
Use Scenario: Hourly temperature/humidity readings stored locally for 30+ days before wireless upload. IC Role / Device Role / Timing Role: High-endurance sequential data archive with guaranteed 100K write cycles per page. Use Value: 20-year data retention and industrial temperature rating ensure long-term reliability in unattended outdoor deployments. | Use Scenario: Storing calibration coefficients and patient history in portable ultrasound units. IC Role / Device Role / Timing Role: Secure parameter storage with 128-byte OTP register containing factory-calibrated sensor offsets. Use Value: Factory-programmed 64-byte unique ID enables traceability and regulatory compliance (FDA 21 CFR Part 11). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| W25Q64JWSSIQ | 64 Mbit Quad SPI NOR Flash; lacks dual SRAM buffers, no RapidS mode, no sector lockdown; 1.7–2.0 V min supply. | Optimized for XIP execution and random access; unsuitable for continuous streaming or secure lockdown use cases. | Select when code execution-in-place (XIP) is required and buffer-assisted streaming is unnecessary. |
| MX25L6433FZNI-10G | 64 Mbit standard SPI NOR Flash; no SRAM buffers, no RapidS, no OTP security register; supports only SPI mode 0. | Lower cost alternative for basic firmware storage where security and streaming performance are secondary. | Choose for cost-sensitive consumer electronics where advanced DataFlash features are unused. |
Compared with W25Q64JWSSIQ and MX25L6433FZNI-10G, the AT45DB641E-CCUN-T uniquely delivers concurrent buffer/main memory operation, hardware-enforced sector lockdown, and sub-1 µA ultra-deep power-down - making it irreplaceable for streaming-critical, security-sensitive, or ultra-low-power embedded systems.
Availability
AT45DB641E-CCUN-T is available at Aetrix Electronics and suitable for voice recording systems, firmware storage for MCUs, environmental data loggers, and medical diagnostic equipment requiring stable component supply across extended production lifecycles.
Supply support for AT45DB641E-CCUN-T 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 is a global semiconductor leader delivering trusted microcontrollers, analog, power, and memory solutions for automotive, industrial, infrastructure, and IoT markets.
The AT45DB641E-CCUN-T belongs to Renesas' DataFlash® family, engineered specifically for high-reliability, low-pin-count, sequential-access storage in resource-constrained embedded systems demanding streaming throughput and robust data security.
FAQ
What is the page size configuration for AT45DB641E-CCUN-T?
The AT45DB641E-CCUN-T supports user-configurable page sizes of either 256 bytes or 264 bytes. The part shipped as AT45DB641E-CCUN-T is factory pre-configured for 256-byte pages, enabling optimal alignment with fixed-packet communication protocols and simplifying address arithmetic in firmware.
Does AT45DB641E-CCUN-T support SPI mode 3?
Yes, AT45DB641E-CCUN-T fully supports SPI mode 3 (CPOL = 1, CPHA = 1), in addition to mode 0. This dual-mode compatibility allows seamless integration with diverse host microcontrollers without requiring hardware-level SPI mode reconfiguration or additional level-shifting circuitry.
How does the dual-buffer architecture improve system performance in AT45DB641E-CCUN-T?
The AT45DB641E-CCUN-T's two independent 256/264-byte SRAM buffers enable true interleaving: while one buffer receives incoming data via SPI, the other simultaneously programs its contents into main Flash memory. This eliminates write stalls and sustains uninterrupted data capture - critical for real-time audio, sensor streams, or telemetry logging.
What security features are implemented in AT45DB641E-CCUN-T?
AT45DB641E-CCUN-T includes hardware sector protection, software-controllable sector lockdown (making regions permanently read-only), and a 128-byte OTP security register - 64 bytes factory-programmed with a unique identifier and 64 bytes user-programmable - providing traceability, anti-cloning, and secure parameter storage.
What is the minimum supply voltage required for AT45DB641E-CCUN-T operation?
The AT45DB641E-CCUN-T operates from a single supply ranging from 1.7 V to 3.6 V. Its 1.7 V minimum rating enables direct interfacing with modern ultra-low-power microcontrollers (e.g., ARM Cortex-M0+ or RISC-V cores) powered by coin cells or energy-harvesting sources without voltage boosting.
AT45DB641E-CCUN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 9-UBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 64Mbit
- Memory Organization:
- 264 Bytes x 32K pages
- Memory Interface:
- SPI
- Clock Frequency:
- 85 MHz
- Write Cycle Time - Word, Page:
- 8µs, 5ms
- Access Time:
- -
- Voltage - Supply:
- 1.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-UBGA (6x6)
AT45DB641E-CCUN-T FAQ
1.How can I place an order for AT45DB641E-CCUN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB641E-CCUN-T 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 AT45DB641E-CCUN-T reliable?
The price and inventory of AT45DB641E-CCUN-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT45DB641E-CCUN-T is usually 5 days.
3.What payment methods are accepted for AT45DB641E-CCUN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB641E-CCUN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB641E-CCUN-T?
AT45DB641E-CCUN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB641E-CCUN-T 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 AT45DB641E-CCUN-T?
For technical support, including AT45DB641E-CCUN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB641E-CCUN-T requirements.
6.How does Aetrix verify that AT45DB641E-CCUN-T is sourced from the original manufacturer or authorized distributors?
All AT45DB641E-CCUN-T 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 AT45DB641E-CCUN-T meets industry standards.
7.What is the process for return or replacement of AT45DB641E-CCUN-T?
All AT45DB641E-CCUN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB641E-CCUN-T, 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 AT45DB641E-CCUN-T part is unused and in its original packaging.
Return procedure for AT45DB641E-CCUN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT45DB641E-CCUN-T 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…
