My Inquiry
My Account
Renesas AT25DF041B-MAHNHR-T
- Part No.:
- AT25DF041B-MAHNHR-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT25DF041B-MAHNHR-T.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,666
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT25DF041B-MAHNHR-T from Renesas Electronics is a 4-Mbit serial SPI Flash memory IC with Dual-I/O support, operating from 1.65 V to 3.6 V across –40 °C to +85 °C. It delivers 104 MHz max clock frequency, 6 ns clock-to-output delay, and supports page (256-byte), 4-kByte/32-kByte/64-kByte block, and full-chip erase - optimized for embedded code shadowing and firmware data storage in space-constrained industrial controllers.
For engineers reviewing the AT25DF041B-MAHNHR-T datasheet, AT25DF041B-MAHNHR-T pinout, AT25DF041B-MAHNHR-T application, or AT25DF041B-MAHNHR-T equivalent, this device is evaluated for low-voltage SPI boot memory, secure firmware update storage, and dual-I/O throughput-critical embedded systems requiring JEDEC-compliant sector protection and OTP security register functionality.
Technical Context
The AT25DF041B-MAHNHR-T implements a SPI-compatible interface supporting Modes 0 and 3 with rising-edge input sampling and falling-edge output timing. Its memory architecture features hierarchical erase granularity - 256-byte pages, uniform 4/32/64-kByte blocks, and full-chip erase - enabling efficient co-location of code and configuration data without cross-contamination during updates.
Dual-I/O Read mode uses both SI (I/O0) and SO (I/O1) as outputs to deliver two bits per SCK cycle, doubling read bandwidth versus standard SPI. Hardware write protection is enforced via the active-low WP pin, while the HOLD pin enables communication suspension without CS toggling or state reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 kByte) - sufficient for bootloader + firmware image in compact MCU-based devices |
| Supply Voltage Range | 1.65 V to 3.6 V - compatible with 1.8 V and 3.3 V logic domains without level shifters |
| Max Clock Frequency | 104 MHz - enables ≤9.6 ns/bit read throughput in Dual-I/O mode for real-time code execution |
| Erase Granularity | 256-byte page / 4-kByte block - allows fine-grained firmware patching without erasing adjacent code segments |
| Endurance | 100,000 program/erase cycles at –40 °C to +85 °C - supports field-updatable embedded applications over 10+ years |
| Data Retention | 20 years - ensures long-term reliability of stored calibration data, device IDs, and configuration parameters |
| Power-Down Current | 200 nA ultra-deep power-down - critical for battery-backed IoT nodes requiring multi-year shelf life |
Pinout & Package
AT25DF041B-MAHNHR-T is packaged in an 8-lead SOIC (150-mil) with standard SPI pinout and hardware control signals. The package meets RoHS, Pb-free, and halide-free requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must transition high→low to initiate command, low→high to terminate operation |
| SCK | Serial Clock | Master-generated clock; rising edge latches input (SI), falling edge clocks output (SO/I/O0–I/O1) |
| SI (I/O0) | Serial Input / Dual-I/O Data 0 | Command/address/data input in standard mode; becomes output (I/O0) during Dual-Output Read |
| SO (I/O1) | Serial Output / Dual-I/O Data 1 | Standard output pin; remains active (I/O1) during Dual-Output Read to enable 2-bit/cycle transfer |
| WP | Write Protect | Active-low hardware lock for sector protection registers; internally pulled high, can be left floating if unused |
| HOLD | Communication Hold | Active-low pause signal; suspends SPI transfer without resetting internal state or aborting ongoing erase/program |
| VCC | Power Supply | 1.65–3.6 V single supply; powers all internal logic and memory array - no auxiliary voltage required |
| GND | Ground Reference | System ground return path; must be low-impedance connection to ensure stable read/write margins |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Mode | Enables 2-bit-per-clock-cycle data transfer using SI and SO simultaneously, doubling effective read bandwidth vs. standard SPI |
| Flexible Erase Architecture | Supports 256-byte page, 4/32/64-kByte uniform blocks, and full-chip erase - minimizes wasted space when updating mixed code/data partitions |
| 128-Byte OTP Security Register | Contains 64-byte factory-programmed unique ID + 64-byte user-programmable space for ESN, keys, or secure boot metadata |
| Hardware Sector Protection | WP pin directly controls locking of protected sectors - provides tamper-resistant firmware partitioning without software overhead |
| Ultra-Deep Power-Down | 200 nA typical current draw - extends battery life in always-on sensor nodes and maintains data integrity during extended storage |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
|
Use Scenario: Storing firmware images and runtime configuration in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing fast, reliable code shadowing into RAM upon power-up and secure field updates via page/block erase. Use Value: 100,000-cycle endurance and 20-year retention ensure consistent operation across 15+ year equipment lifecycles without memory degradation. |
Use Scenario: Holding certified bootloader and diagnostic firmware in portable ultrasound and infusion pump systems requiring regulatory traceability. IC Role / Device Role / Timing Role: Secure SPI Flash storing signed firmware images and device-specific calibration tables with OTP-based serialization. Use Value: 128-byte OTP register enables unique device identification and cryptographic key binding compliant with IEC 62304 and FDA cybersecurity guidance. |
| Smart Meter Code Partitioning | Automotive Body Control Module (BCM) |
|
Use Scenario: Isolating tariff logic, communication stack, and metering algorithms in ANSI C12.19-compliant electricity meters with remote firmware upgrades. IC Role / Device Role / Timing Role: Dual-I/O-capable Flash enabling rapid read of encrypted OTA update packages while maintaining separate protected sectors for calibration constants. Use Value: 4-kByte block erase granularity permits atomic updates of individual functional modules without disrupting operational firmware partitions. |
Use Scenario: Hosting CAN firmware and lighting control logic in automotive BCMs operating across –40 °C to +125 °C ambient conditions. IC Role / Device Role / Timing Role: Industrial-temp-rated SPI Flash providing robust code storage with hardware WP pin enforcement of safety-critical configuration locks. Use Value: 1.65–3.6 V supply range and –40 °C to +125 °C qualification allow direct integration with 3.3 V microcontrollers in under-hood environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Winbond W25Q40EW | 4 Mbit density, 133 MHz max clock, 1.7–1.95 V / 2.7–3.6 V dual supply; no OTP register; 200 µA deep power-down | Lacks factory-programmed UID and user OTP space; requires external key management for secure boot | Select when higher clock speed is prioritized over on-chip security features and ultra-low power-down current |
| Micron MT25QL04A | 4 Mbit density, 133 MHz max clock, 1.7–2.0 V / 2.7–3.6 V dual supply; Quad SPI only; 2 µA deep power-down | Quad-I/O interface only - incompatible with Dual-I/O or standard SPI-only hosts; no hardware WP pin | Choose only for new designs targeting QSPI bus architecture and willing to forgo hardware write protection and OTP security |
Compared with W25Q40EW and MT25QL04A, the AT25DF041B-MAHNHR-T uniquely combines Dual-I/O throughput, integrated OTP security register with factory UID, hardware WP pin, and 200 nA ultra-deep power-down - making it optimal for cost-sensitive, security-aware, and battery-constrained embedded systems requiring SPI compatibility.
Availability
AT25DF041B-MAHNHR-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader memory, and smart meter code partitioning requiring stable component supply and long-term lifecycle support.
Supply support for AT25DF041B-MAHNHR-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 microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT applications.
The AT25DF041B-MAHNHR-T belongs to Renesas' serial Flash memory product line, engineered for high-reliability embedded code and data storage with emphasis on low-voltage operation, flexible erase architecture, and integrated security features.
FAQ
What is the operating temperature range for the AT25DF041B-MAHNHR-T?
The AT25DF041B-MAHNHR-T is rated for the full industrial temperature range of –40 °C to +85 °C. This specification is validated per Renesas' DS-AT25DF041B-040 Rev. H, Table 15, and applies to all electrical and timing parameters including 104 MHz operation, 256-byte page erase, and OTP programming. The part does not support the extended –40 °C to +125 °C grade.
Does the AT25DF041B-MAHNHR-T support Quad SPI (QSPI) interface?
No, the AT25DF041B-MAHNHR-T does not support Quad SPI. It supports standard SPI Modes 0 and 3, plus Dual-I/O Read mode using SI (I/O0) and SO (I/O1) as simultaneous outputs. QSPI commands and four-data-line transfers are not implemented - confirmed by absence in Tables 2 and 7 of the official datasheet.
How is the 128-byte OTP security register structured in the AT25DF041B-MAHNHR-T?
The AT25DF041B-MAHNHR-T OTP security register is divided into two 64-byte sections: the first 64 bytes are factory-programmed with a unique device identifier (UID), and the second 64 bytes are user-programmable via the Program OTP Security Register command (opcode B1h). Once programmed, OTP bytes cannot be erased or rewritten - verified in Section 10.1 and Table 8 of the datasheet.
What package type is used for the AT25DF041B-MAHNHR-T?
The AT25DF041B-MAHNHR-T uses an 8-lead SOIC (150-mil) package, as indicated by the "MAHNHR-T" suffix per Renesas' Ordering Information (Section 16, Page 57). This package matches Figure 1 in the datasheet and supports standard reflow soldering with JEDEC-standard footprint dimensions.
Can the AT25DF041B-MAHNHR-T perform page programming with fewer than 256 bytes?
Yes, the AT25DF041B-MAHNHR-T supports variable-length byte programming within a 256-byte page boundary - from 1 to 256 bytes per program operation. This is explicitly stated in the "Flexible Programming" feature list (Page 1) and detailed in Section 8.1 (Byte/Page Program), enabling partial-page updates without erasing the entire page.
AT25DF041B-MAHNHR-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 85 MHz
- Write Cycle Time - Word, Page:
- 8µs, 2.5ms
- Access Time:
- -
- Voltage - Supply:
- 1.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (2x3)
AT25DF041B-MAHNHR-T FAQ
1.How can I place an order for AT25DF041B-MAHNHR-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DF041B-MAHNHR-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 AT25DF041B-MAHNHR-T reliable?
The price and inventory of AT25DF041B-MAHNHR-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25DF041B-MAHNHR-T is usually 5 days.
3.What payment methods are accepted for AT25DF041B-MAHNHR-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DF041B-MAHNHR-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DF041B-MAHNHR-T?
AT25DF041B-MAHNHR-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DF041B-MAHNHR-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 AT25DF041B-MAHNHR-T?
For technical support, including AT25DF041B-MAHNHR-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DF041B-MAHNHR-T requirements.
6.How does Aetrix verify that AT25DF041B-MAHNHR-T is sourced from the original manufacturer or authorized distributors?
All AT25DF041B-MAHNHR-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 AT25DF041B-MAHNHR-T meets industry standards.
7.What is the process for return or replacement of AT25DF041B-MAHNHR-T?
All AT25DF041B-MAHNHR-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25DF041B-MAHNHR-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 AT25DF041B-MAHNHR-T part is unused and in its original packaging.
Return procedure for AT25DF041B-MAHNHR-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT25DF041B-MAHNHR-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…
