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Renesas AT25XE021A-MAHN-T
- Part No.:
- AT25XE021A-MAHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT25XE021A-MAHN-T.pdf
- Description:
- IC FLASH 2MBIT SPI 70MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:74,712
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Product details
Overview
AT25XE021A-MAHN-T from Renesas Electronics is a 2-Mbit SPI serial Flash memory IC designed for code shadowing and embedded data storage in consumer electronics. It operates from 1.65 V to 3.6 V, supports SPI Modes 0/3 and Dual-I/O read, delivers 70 MHz max clock frequency, achieves 6 ns clock-to-output delay, and features uniform 4-kByte/32-kByte/64-kByte block erase plus 256-Byte page erase.
For engineers reviewing the AT25XE021A-MAHN-T datasheet, AT25XE021A-MAHN-T pinout, AT25XE021A-MAHN-T application, or AT25XE021A-MAHN-T equivalent, key selection criteria include its dual-I/O read capability, ultra-low 200 nA deep power-down current, OTP security register with factory-programmed unique ID, flexible erase granularity, and industrial temperature support.
Technical Context
The AT25XE021A-MAHN-T implements a standard SPI interface with hardware-controlled write protection via the WP pin and software-managed sector locking. Its memory architecture supports byte/page program (1–256 bytes), dual-input programming, and sequential program mode with status polling or fixed timing.
Dual-I/O operation enables two-bit data output per SCK falling edge during read commands (0Bh, 3Bh), doubling effective throughput versus standard single-I/O reads. Erase operations are internally self-timed and automatically report failure via status register bits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 bytes) - sufficient for firmware images, boot code, and configuration data in space-constrained designs. |
| Supply Voltage | 1.65 V to 3.6 V - compatible with modern low-voltage microcontrollers and battery-powered systems without level shifting. |
| Max Clock Frequency | 70 MHz - enables high-speed code execution and rapid data access in real-time applications. |
| Read Latency | 6 ns clock-to-output (tV) - minimizes wait states during instruction fetch or data streaming. |
| Erase Granularity | 256-Byte page, 4/32/64-kByte uniform blocks, full chip - allows precise code/data partitioning without memory waste. |
| Power-Down Current | 200 nA ultra-deep power-down (typical) - extends battery life in always-on or intermittent-sensing devices. |
| Endurance & Retention | 100,000 program/erase cycles; 20-year data retention - suitable for field-updatable firmware and long-life industrial deployments. |
Pinout & Package
AT25XE021A-MAHN-T is packaged in an 8-lead SOIC (150-mil) body, measuring 5.0 mm × 4.0 mm × 1.5 mm, RoHS-compliant and halide-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must transition high-to-low to initiate any command and low-to-high to terminate; device remains in standby (not deep power-down) when deasserted. |
| SCK | Serial Clock | Input clock controlling data transfer timing; all input data latched on rising edge; output data driven on falling edge. |
| SI (I/O0) | Serial Input / Dual-I/O Data 0 | Primary command/address/data input; becomes bidirectional I/O0 during Dual-I/O read operations. |
| SO (I/O1) | Serial Output / Dual-I/O Data 1 | Primary data output; remains active as I/O1 during Dual-I/O read, enabling concurrent 2-bit output per SCK cycle. |
| WP | Write Protect | Hardware lock control; low-active signal that enables sector-level protection independent of software commands. |
| HOLD | Communication Hold | Pauses ongoing SPI transfers without deselecting CS; requires CS asserted and SCK low to activate; SO enters high-Z state. |
| VCC | Power Supply | Single supply rail (1.65–3.6 V); powers all internal logic and memory array; no auxiliary voltage required for programming/erasing. |
| GND | Ground Reference | System ground return path; must be connected directly to PCB ground plane for stable operation and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Support | Enables 2-bit parallel data output per SCK falling edge (0Bh/3Bh opcodes), doubling read bandwidth over standard SPI without increasing clock rate. |
| Flexible Erase Architecture | Four erase granularities (256B page, 4/32/64kB blocks, full chip) reduce wasted memory space in mixed code/data layouts. |
| OTP Security Register | 128-byte one-time programmable area: 64 bytes factory-programmed with unique device ID, 64 bytes user-programmable for secure keys or calibration data. |
| Ultra-Low Power Modes | 200 nA ultra-deep power-down and 4.5 µA deep power-down allow aggressive energy management in battery-critical applications. |
| Hardware + Software Protection | Combines WP pin-based sector locking with software-configurable protection registers for layered security against accidental or malicious writes. |
Applications
| Smart Home Hub Firmware Storage | Industrial PLC Configuration Memory |
|---|---|
Use Scenario: Storing boot firmware, OTA update images, and device-specific configuration parameters in a Wi-Fi/BLE-enabled smart home hub. IC Role / Device Role / Timing Role: Non-volatile code and data storage IC interfaced via SPI to an ARM Cortex-M host MCU; supports fast read for boot latency reduction and page erase for incremental updates. Use Value: 6 ns tV and 70 MHz clock enable sub-100 ms boot time; 256-Byte page erase allows atomic firmware patching without disrupting operational memory regions. | Use Scenario: Retaining calibrated sensor offsets, I/O mapping tables, and safety-critical configuration in programmable logic controllers operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade serial Flash providing reliable, long-term data retention and robust write protection against EMI-induced corruption. Use Value: 20-year data retention and 100,000-cycle endurance ensure 10+ years of field operation; hardware WP pin prevents runtime overwrite during electrical transients. |
| Wearable Health Monitor Data Logger | Automotive Infotainment Bootloader Storage |
Use Scenario: Logging heart rate, SpO₂, and motion sensor data between BLE sync intervals in a compact wearable device powered by a coin-cell battery. IC Role / Device Role / Timing Role: Low-power serial Flash used for buffered data storage; leverages ultra-deep power-down (200 nA) between logging intervals to maximize battery life. Use Value: 200 nA deep power-down current extends coin-cell lifetime beyond 6 months; 4-kByte block erase enables efficient circular buffer management. | Use Scenario: Storing primary bootloader and secure boot keys in automotive infotainment head units requiring AEC-Q100 alignment and functional safety support. IC Role / Device Role / Timing Role: Trusted non-volatile memory for secure boot chain initialization; OTP register stores immutable cryptographic keys and device identity. Use Value: Factory-programmed 64-byte unique ID enables hardware-rooted device authentication; OTP write-once behavior prevents key tampering after provisioning. |
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 W25Q20EW | 2-Mbit density, 1.7–2.0 V supply range only; lacks OTP security register and ultra-deep power-down mode. | Targeted at cost-sensitive consumer devices where extended voltage range and security are not required. | Select W25Q20EW only if system operates strictly within 1.7–2.0 V and does not require unique ID or ultra-low power sleep. |
| Micron MT25QL02GA | 2-Mbit density, supports Quad-I/O (x4) and DTR modes; higher pin count (8-pin SOIC same, but QFN variants differ); no OTP register. | Preferred for high-throughput applications needing >70 MHz effective read rates via Quad SPI or DDR timing. | Choose MT25QL02GA when bandwidth exceeds Dual-I/O limits and board layout accommodates optional Quad-capable routing. |
Compared with W25Q20EW and MT25QL02GA, the AT25XE021A-MAHN-T uniquely combines wide 1.65–3.6 V operation, integrated OTP security with factory ID, and industry-leading 200 nA ultra-deep power-down-making it optimal for battery-powered, secure, and voltage-flexible embedded systems.
Availability
AT25XE021A-MAHN-T is available at Aetrix Electronics and suitable for smart home hubs, industrial PLCs, wearable health monitors, and automotive infotainment systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT25XE021A-MAHN-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 applications.
The AT25XE021A belongs to Renesas' serial Flash memory product line, engineered for high-reliability embedded code and data storage with emphasis on low-voltage operation, security, and power efficiency in resource-constrained systems.
FAQ
What is the maximum operating frequency supported by the AT25XE021A-MAHN-T?
The AT25XE021A-MAHN-T supports a maximum clock frequency of 70 MHz. This specification applies to standard and Dual-I/O read operations under valid voltage and temperature conditions per the datasheet's AC characteristics table. The 70 MHz rating ensures high-speed data access for boot code execution and firmware updates without requiring external clock multiplication or buffering circuits.
Does the AT25XE021A-MAHN-T include hardware write protection?
Yes, the AT25XE021A-MAHN-T includes hardware write protection via the dedicated WP (Write Protect) pin. When pulled low, the WP pin enables hardware-controlled locking of protected sectors independently of software commands. The pin is internally pulled high, allowing it to be left floating if unused-but Renesas recommends connecting it to VCC for noise immunity unless actively leveraging hardware protection.
What type of package is used for the AT25XE021A-MAHN-T?
The AT25XE021A-MAHN-T uses an 8-lead SOIC (Small Outline Integrated Circuit) package with 150-mil body width. Its dimensions are 5.0 mm × 4.0 mm × 1.5 mm, and it complies with JEDEC MS-012 standards. This package is lead-free, halide-free, and RoHS-compliant, supporting standard reflow soldering processes.
How does the OTP security register function in the AT25XE021A-MAHN-T?
The AT25XE021A-MAHN-T features a 128-byte One-Time Programmable (OTP) security register: 64 bytes are factory-programmed with a unique device identifier, and 64 bytes are user-programmable once. Programming is irreversible and performed via dedicated SPI commands (A1h). This register supports secure device serialization, ESN storage, and cryptographic key anchoring-critical for anti-counterfeiting and secure boot implementations.
What erase block sizes are available on the AT25XE021A-MAHN-T?
The AT25XE021A-MAHN-T supports five erase granularities: 256-byte page erase (D8h), 4-kByte block erase (20h), 32-kByte block erase (52h), 64-kByte block erase (D8h with address mask), and full chip erase (60h/C7h). This flexible architecture minimizes wasted memory in mixed code-and-data applications and avoids the inefficiency of large-sector-only Flash devices.
AT25XE021A-MAHN-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:
- 2Mbit
- Memory Organization:
- 256K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 70 MHz
- Write Cycle Time - Word, Page:
- 8µs, 5ms
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (2x3)
AT25XE021A-MAHN-T FAQ
1.How can I place an order for AT25XE021A-MAHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25XE021A-MAHN-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 AT25XE021A-MAHN-T reliable?
The price and inventory of AT25XE021A-MAHN-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25XE021A-MAHN-T is usually 5 days.
3.What payment methods are accepted for AT25XE021A-MAHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25XE021A-MAHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25XE021A-MAHN-T?
AT25XE021A-MAHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25XE021A-MAHN-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 AT25XE021A-MAHN-T?
For technical support, including AT25XE021A-MAHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25XE021A-MAHN-T requirements.
6.How does Aetrix verify that AT25XE021A-MAHN-T is sourced from the original manufacturer or authorized distributors?
All AT25XE021A-MAHN-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 AT25XE021A-MAHN-T meets industry standards.
7.What is the process for return or replacement of AT25XE021A-MAHN-T?
All AT25XE021A-MAHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25XE021A-MAHN-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 AT25XE021A-MAHN-T part is unused and in its original packaging.
Return procedure for AT25XE021A-MAHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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