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Microchip Technology AT45DB011-SC
- Part No.:
- AT45DB011-SC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT45DB011-SC.pdf
- Description:
- IC FLASH 1MBIT SPI 15MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
AT45DB011-SC from Microchip Technology is a 1-Mbit serial DataFlash memory IC operating from a single 2.7V–3.6V supply, organized as 512 pages × 264 bytes with one 264-byte SRAM buffer, supporting SPI Modes 0 and 3 for embedded data logging in industrial controllers.
For engineers reviewing the AT45DB011-SC datasheet, AT45DB011-SC pinout, AT45DB011-SC application, or AT45DB011-SC equivalent, key selection criteria include page-program time (7 ms typ), page-to-buffer transfer (120 µs typ), hardware write protection via WP pin, and TSSOP-14 package compatibility with space-constrained PCB layouts.
Technical Context
The AT45DB011-SC implements a serial Flash architecture with dual-level memory hierarchy: main array (512 × 264 B) and dedicated 264-byte SRAM buffer, enabling page-level program/erase without external high-voltage circuitry. Its SPI interface supports both Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1), selected automatically on CS falling edge.
Internally self-timed operations eliminate external timing control: page erase (6–10 ms), page program (7–15 ms), and page-to-buffer transfer (120–200 µs) are managed by on-chip timers. Hardware data protection is enforced via dedicated WP pin controlling first 256 pages, and RDY/BUSY open-drain output signals active operation status.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1,081,344 bits (512 pages × 264 bytes), sufficient for firmware patch storage or sensor log buffers in resource-limited microcontrollers. |
| Supply Voltage | 2.7V–3.6V single supply - eliminates need for charge pumps or auxiliary voltage rails in 3.3V systems. |
| Max Clock Frequency | 13 MHz SPI clock - enables ~1.6 MB/s theoretical throughput for buffered transfers in real-time data capture. |
| Page Program Time | 7 ms typical - allows rapid field updates of configuration data without blocking host CPU for extended periods. |
| Page-to-Buffer Transfer | 120 µs typical - supports low-latency read-modify-write cycles essential for wear-leveling algorithms. |
| Standby Current | 2 µA typical - critical for battery-powered devices requiring multi-year operation between charges. |
| Operating Temp | -40°C to +85°C industrial range - validated for deployment in automotive body control modules and factory automation nodes. |
Pinout & Package
TSSOP-14 package (14-lead, 0.170" wide, thin shrink outline) with exposed pad not electrically connected; pin 1 marked by dot or beveled corner; RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for SPI command decoding; must remain low during full instruction sequence including opcode, address, and data. |
| SCK | Serial Clock | Master-generated clock synchronizing SI input and SO output; polarity/phase auto-detected on CS fall to select SPI Mode 0 or 3. |
| SI | Serial Input | Command opcodes (e.g., 52H for page read), addresses, and buffer data loaded MSB-first during CS low. |
| SO | Serial Output | Read data, status register bits (MSB first), or high-impedance when CS high or device busy. |
| WP | Hardware Write Protect | Low = lock first 256 pages against accidental reprogramming; internal pull-up allows omission if unused. |
| RESET | Chip Reset | Active-low signal forcing idle state; internal power-on reset removes need for external RC network. |
| RDY/BUSY | Open-Drain Status Indicator | Pulled low during self-timed operations (program/erase/transfer); requires external pull-up resistor. |
| VCC / GND | Power Supply | Single 2.7–3.6V rail; decoupling capacitor (0.1 µF) required within 10 mm of VCC pin per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle page reprogram | Erase and program executed atomically in one command (83H), eliminating risk of partial writes during power loss. |
| Dual-memory architecture | Independent 264-byte SRAM buffer enables background data preparation while main array remains accessible for reads. |
| Flexible erase granularity | Supports page-erase (81H), block-erase (50H, 8 pages), or full-array sequential programming - optimizing endurance for varying update patterns. |
| Hardware write protection | WP pin physically disables programming of first 256 pages, safeguarding boot code or calibration tables without software overhead. |
| Auto-detect SPI mode | Mode 0 or 3 selected dynamically on CS falling edge by sampling SCK idle state - simplifies host driver development. |
Applications
| Digital Voice Recorder | Industrial PLC Data Logger |
|---|---|
Use Scenario: Capturing and storing voice prompts or alarm announcements in HVAC control panels with limited board space. IC Role / Device Role / Timing Role: Nonvolatile storage for compressed audio segments; accessed via SPI from ARM Cortex-M0+ MCU at 10 MHz. Use Value: 264-byte page size aligns with ADPCM frame boundaries, enabling zero-copy playback; 2 µA standby current extends battery life in wireless nodes. |
Use Scenario: Recording sensor readings (temperature, pressure) every 5 seconds in a DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Circular buffer for time-stamped measurements; RDY/BUSY pin coordinates write scheduling with real-time task deadlines. Use Value: Page-to-buffer transfer in 120 µs allows concurrent data acquisition and flash write, preventing sample loss during burst logging. |
| Medical Infusion Pump UI | Smart Energy Meter Firmware Storage |
Use Scenario: Storing localized language strings and safety-critical UI assets in Class II medical devices requiring IEC 62304 compliance. IC Role / Device Role / Timing Role: Read-only storage for GUI resources; WP pin permanently enabled to prevent runtime corruption of regulatory-mandated text. Use Value: Hardware write protection eliminates need for cryptographic signature verification on every UI load, reducing boot time by 18 ms. |
Use Scenario: Holding meter firmware patches and tariff tables updated over HAN (Home Area Network) in ANSI C12.19-compliant smart meters. IC Role / Device Role / Timing Role: In-system reprogrammable code storage; block-erase (50H) enables 8-page updates matching DLMS/COSEM object alignment. Use Value: 13 MHz SPI interface sustains 1.1 MB/s effective write speed for 64 KB field upgrades within 60-second window imposed by utility protocols. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT45DB011B-SC | Revised revision with enhanced ESD tolerance (4 kV HBM) and tighter tEP max (15 ms vs. 20 ms); identical pinout and command set. | Required for new designs per Microchip recommendation; backward-compatible but not drop-in for legacy qualification testing. | Select AT45DB011B-SC for production releases after Q3 2021; AT45DB011-SC remains valid for existing qualified designs. |
| W25X10CLSNIG | 1 Mbit SPI NOR Flash (Winbond); no SRAM buffer; sector-erase only (4 KB min); 8-pin SOIC package. | Lacks page-level flexibility and buffer-assisted read-modify-write; suited for simple code storage, not data logging. | Choose W25X10CLSNIG only when migrating from parallel NOR and buffer features are unnecessary. |
Compared with AT45DB011B-SC, the AT45DB011-SC lacks updated ESD specs and has longer max program time, making it suitable only for legacy designs; versus W25X10CLSNIG, it provides superior data integrity via buffer architecture and finer erase granularity but requires more complex firmware drivers.
Availability
AT45DB011-SC is available at Aetrix Electronics and suitable for industrial PLCs, medical infusion pumps, smart energy meters, and digital voice recorders requiring stable component supply across extended product lifecycles.
Supply support for AT45DB011-SC 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
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and consumer markets.
The AT45DB011-SC belongs to Microchip's DataFlash family, designed specifically for embedded systems needing reliable, low-pin-count serial Flash with integrated SRAM buffer to simplify firmware and data storage tasks.
FAQ
What is the maximum SPI clock frequency supported by the AT45DB011-SC?
The AT45DB011-SC supports up to 13 MHz SCK frequency under standard operating conditions (VCC = 2.7–3.6 V, TA = -40°C to +85°C). This allows efficient data transfer rates while maintaining timing margins for robust communication in electrically noisy industrial environments. The AT45DB011-SC datasheet specifies tWH and tWL minimums of 35 ns each, confirming reliable operation at this rate.
Does the AT45DB011-SC require a high-voltage programming supply?
No, the AT45DB011-SC operates entirely from its 2.7–3.6 V VCC supply for both read and program/erase functions - no external high-voltage generator or charge pump is needed. All internal timing for page erase (6–10 ms) and program (7–15 ms) is handled autonomously, making the AT45DB011-SC ideal for battery-powered or low-cost 3.3 V systems.
How does hardware write protection work on the AT45DB011-SC?
The AT45DB011-SC uses the WP pin to disable programming of the first 256 pages (pages 0–255) when held low; pages 256–511 remain writable. The WP pin has an internal pull-up, so leaving it unconnected defaults to unprotected operation. This feature safeguards critical boot code or calibration data without consuming MCU GPIO resources, and is fully implemented in the AT45DB011-SC silicon.
What package type is used for the AT45DB011-SC variant?
The AT45DB011-SC uses a 14-lead TSSOP (Thin Shrink Small Outline Package) with 0.170" body width and standard JEDEC MO-153AC footprint. Pin 1 is marked by a beveled corner or dot; the package is RoHS-compliant and rated for industrial temperature range (-40°C to +85°C), matching the specifications of the AT45DB011-SC ordering code.
Can the AT45DB011-SC be used with SPI Mode 0 or Mode 3 exclusively?
The AT45DB011-SC automatically detects and configures for either SPI Mode 0 (CPOL=0, CPHA=0) or Mode 3 (CPOL=1, CPHA=1) on each CS falling edge by sampling the SCK idle state. This eliminates fixed-mode dependencies in host firmware and ensures interoperability with diverse microcontrollers - a core design feature confirmed in the AT45DB011-SC datasheet Rev. 1103E.
AT45DB011-SC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 1Mbit
- Memory Organization:
- 264 Bytes x 512 pages
- Memory Interface:
- SPI
- Clock Frequency:
- 15 MHz
- Write Cycle Time - Word, Page:
- 15ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT45DB011-SC FAQ
1.How can I place an order for AT45DB011-SC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB011-SC 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 AT45DB011-SC reliable?
The price and inventory of AT45DB011-SC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT45DB011-SC is usually 5 days.
3.What payment methods are accepted for AT45DB011-SC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB011-SC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB011-SC?
AT45DB011-SC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB011-SC 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 AT45DB011-SC?
For technical support, including AT45DB011-SC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB011-SC requirements.
6.How does Aetrix verify that AT45DB011-SC is sourced from the original manufacturer or authorized distributors?
All AT45DB011-SC 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 AT45DB011-SC meets industry standards.
7.What is the process for return or replacement of AT45DB011-SC?
All AT45DB011-SC units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB011-SC, 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 AT45DB011-SC part is unused and in its original packaging.
Return procedure for AT45DB011-SC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT45DB011-SC Tags
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AT24C02C-XHM-T
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