My Inquiry
My Account
Microchip Technology AT45DB011-XC
- Part No.:
- AT45DB011-XC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT45DB011-XC.pdf
- Description:
- IC FLASH 1MBIT SPI 15MHZ 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,982
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT45DB011-XC from Microchip Technology is a 1-Mbit (1,081,344-bit), 2.7V-only serial DataFlash memory organized as 512 pages × 264 bytes, featuring an integrated 264-byte SRAM buffer, SPI-compatible interface (Modes 0 and 3), and hardware page write protection via the WP pin. It enables in-system reprogramming for embedded data logging and firmware storage in space-constrained industrial controllers.
For engineers reviewing the AT45DB011-XC datasheet, AT45DB011-XC pinout, AT45DB011-XC application, or AT45DB011-XC equivalent, key selection considerations include its 13 MHz max clock frequency, 7 ms typical page program time, 120 µs page-to-buffer transfer, 2.7–3.6 V single-supply operation, and TSSOP-14 package with validated CS/SCK/SI/SO/RESET/WP/RDY/BUSY pin functions.
Technical Context
The AT45DB011-XC implements a serial flash architecture with hierarchical memory granularity-pages (264 B), blocks (8 pages = 2112 B), and sectors-and supports both page-level and block-level erase operations. Its dual-buffered access model separates main memory and SRAM buffer, enabling concurrent read-modify-write sequences without external RAM.
Command execution is fully self-timed: all program/erase operations (e.g., Buffer-to-Main-Memory Page Program with Built-in Erase, opcode 83H) require no external timing control, and status is monitored via bit 7 of the 8-bit status register read using opcode 57H. The device defaults to SPI Mode 3 at power-on/reset and supports hardware write protection on the first 256 pages when WP is low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1,081,344 bits (512 pages × 264 bytes); enables compact firmware/image storage without parallel bus overhead |
| Supply Voltage | 2.7 V to 3.6 V single supply; eliminates need for voltage translators in 3.3 V systems |
| Max Clock Frequency | 13 MHz SPI interface; supports high-throughput data streaming up to ~1.6 MB/s theoretical burst rate |
| Page Program Time | 7 ms typical; defines minimum latency for updating one 264-byte page during field firmware updates |
| Page-to-Buffer Transfer | 120 µs typical; enables rapid loading of flash content into SRAM for modification before rewrite |
| Standby Current | 2 µA typical; critical for battery-powered data loggers requiring multi-year shelf life |
| Operating Temp | -40°C to +85°C (industrial grade); qualified for deployment in motor drives and outdoor IoT nodes |
Pinout & Package
TSSOP-14 package (14-lead, 0.170" wide, thin shrink outline) with exposed pad not present; pin 1 marked by dot, pin 14 is VCC, pin 7 is SO, pin 13 is SI, pin 12 is SCK, pin 11 is CS, pin 10 is RESET, pin 9 is WP, pin 8 is RDY/BUSY, pins 5–6 are GND/VCC, pins 2–4 and 14 are NC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must be held low for full instruction sequence (opcode + address + data); controls SPI transaction boundary |
| SCK | Serial Clock | Master-generated clock; toggles on both edges; determines data rate (max 13 MHz) and SPI mode (0 or 3) |
| SI | Serial Input | CMOS/TTL-compatible data input; receives opcodes, addresses, and buffer write data MSB-first |
| SO | Serial Output | Open-drain capable; outputs read data, status register bits, or command responses; requires external pull-up |
| WP | Hardware Write Protect | Active-low page lock; disables programming of pages 0–255 when pulled low; internally pulled high |
| RESET | Chip Reset | Active-low asynchronous reset; terminates ongoing operation and returns state machine to idle; internally pulled high |
| RDY/BUSY | Ready/Busy Indicator | Open-drain output; driven low during self-timed operations (program/erase/transfer); used for polling or interrupt-driven flow control |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle page erase + program | Combines erase and write in one 83H command; eliminates separate erase step and simplifies firmware update logic |
| Dual-memory architecture | Separate 512×264 B main array and 264 B SRAM buffer enable atomic read-modify-write without host RAM buffering |
| Hardware page write protection | WP pin locks first 256 pages; prevents accidental corruption of boot code or calibration data in field-deployed units |
| Auto Page Rewrite command | Opcode 58H performs atomic page transfer + reprogram; maintains data integrity during random byte updates in wear-sensitive sectors |
| Status register monitoring | Bit 7 (RDY/BUSY) and bit 6 (Compare result) provide real-time operational feedback without polling overhead |
Applications
| Digital Voice Recorder | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Embedded voice prompt playback in HVAC control panels with limited PCB area and no external RAM. IC Role / Device Role / Timing Role: Serial nonvolatile storage for 30–60 seconds of 8-bit PCM audio; accessed via SPI at ≤13 MHz during playback trigger events. Use Value: Eliminates need for parallel NOR flash and address latches; 264-byte page granularity matches typical audio frame size for efficient sector management. |
Use Scenario: Storing ladder logic programs and I/O configuration tables in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: In-system reprogrammable firmware storage with hardware write protection on boot pages; operates across -40°C to +85°C ambient. Use Value: WP pin prevents runtime corruption of startup code; 2 µA standby current extends backup battery life during power loss events. |
| Medical Sensor Data Logger | Smart Meter Firmware Update |
Use Scenario: Battery-powered wearable ECG monitor recording timestamped waveform snippets over 72-hour periods. IC Role / Device Role / Timing Role: Low-power sequential data capture into circular buffer pages; uses Main Memory Page Program (82H) for direct SI-streamed writes. Use Value: 7 ms page program time enables sub-100 ms write latency per 264-byte sample; 4 mA active read current minimizes sensor acquisition interruption. |
Use Scenario: Over-the-air (OTA) firmware patching in utility smart meters where field reliability and tamper resistance are critical. IC Role / Device Role / Timing Role: Secure storage for signed firmware images; uses Buffer-to-Main-Memory Page Program with Built-in Erase (83H) for atomic patch application. Use Value: Single-command erase+write prevents partial-update failure states; RDY/BUSY pin enables deterministic OTA scheduling without timeout guesswork. |
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-XC | Revised revision with improved endurance (100k program/erase cycles vs. original's 10k) and tighter tEP/tP specs; pinout and command set identical | Required for new designs per Microchip recommendation; suitable for high-write-cycle logging applications | Select AT45DB011B-XC for all new designs; legacy AT45DB011-XC remains valid for existing production but lacks endurance upgrade |
| W25X10CLSNIG | 1 Mbit SPI NOR flash (Winbond); no SRAM buffer; standard 256 B pages; no auto-rewrite or page-to-buffer transfer commands | Lacks DataFlash-specific features like buffer-assisted atomic updates; requires host-side buffering for modify-in-place operations | Choose only if bufferless architecture suffices and cost is primary driver; not drop-in for DataFlash firmware logic |
Compared with AT45DB011-XC, the AT45DB011B-XC delivers higher endurance and tighter timing without layout or firmware changes, while W25X10CLSNIG offers lower cost but removes the SRAM buffer advantage essential for atomic page updates.
Availability
AT45DB011-XC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical sensor data logging, and smart meter OTA updates requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT45DB011-XC 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 global semiconductor manufacturer specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and consumer applications.
The AT45DB011-XC belongs to Microchip's DataFlash family, designed specifically for embedded systems needing reliable, low-pin-count serial flash with integrated SRAM buffers to simplify in-system reprogramming and data integrity management.
FAQ
What is the maximum clock frequency supported by the AT45DB011-XC?
The AT45DB011-XC supports a maximum serial clock (SCK) frequency of 13 MHz, as specified in its AC characteristics table. This allows high-speed data transfers during read, write, and buffer operations. The device remains fully functional across this range under 2.7–3.6 V supply and within its industrial temperature range. Exceeding 13 MHz may cause command failures or data corruption in the AT45DB011-XC.
Does the AT45DB011-XC require a high-voltage programming signal?
No, the AT45DB011-XC does not require high-voltage programming signals. It operates entirely from a single 2.7–3.6 V supply for both read and program/erase operations. All internal timing-including page erase, programming, and buffer transfers-is self-timed, eliminating external voltage pumps or timing generators. This simplifies power design and enhances reliability in the AT45DB011-XC.
How does hardware write protection work on the AT45DB011-XC?
The AT45DB011-XC uses the WP (Write Protect) pin to disable programming of pages 0–255 when held low. Pages 256–511 remain writable regardless of WP state. The WP pin is internally pulled high, so leaving it unconnected enables full memory access. For secure boot applications, tying WP low protects critical firmware sections in the AT45DB011-XC.
What is the purpose of the SRAM data buffer in the AT45DB011-XC?
The AT45DB011-XC includes a dedicated 264-byte SRAM buffer to enable atomic read-modify-write operations without external RAM. It supports fast page-to-buffer transfers (120 µs typical), buffer reads/writes, and buffer-to-main-memory programming. This architecture eliminates the need for host-side buffering and ensures data consistency during partial-page updates in the AT45DB011-XC.
Is the AT45DB011-XC pin-compatible with the AT45DB011B-XC?
Yes, the AT45DB011-XC is pin-compatible and command-compatible with the AT45DB011B-XC. Both share identical TSSOP-14 pinout, electrical characteristics, and instruction set. The AT45DB011B-XC is a revised version with enhanced endurance (100k vs. 10k cycles) and tighter timing specs, making it a direct replacement for new designs while maintaining full backward compatibility with existing AT45DB011-XC hardware and firmware.
AT45DB011-XC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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:
- 14-TSSOP
AT45DB011-XC FAQ
1.How can I place an order for AT45DB011-XC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB011-XC 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-XC reliable?
The price and inventory of AT45DB011-XC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT45DB011-XC is usually 5 days.
3.What payment methods are accepted for AT45DB011-XC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB011-XC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB011-XC?
AT45DB011-XC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB011-XC 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-XC?
For technical support, including AT45DB011-XC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB011-XC requirements.
6.How does Aetrix verify that AT45DB011-XC is sourced from the original manufacturer or authorized distributors?
All AT45DB011-XC 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-XC meets industry standards.
7.What is the process for return or replacement of AT45DB011-XC?
All AT45DB011-XC units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB011-XC, 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-XC part is unused and in its original packaging.
Return procedure for AT45DB011-XC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT45DB011-XC 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…
