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Microchip Technology AT45DB011-JC
- Part No.:
- AT45DB011-JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT45DB011-JC.pdf
- Description:
- IC FLASH 1MBIT SPI 15MHZ 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,149
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Product details
Overview
AT45DB011-JC from Microchip Technology is a 1-Mbit (1,081,344-bit), 2.7V-only serial DataFlash memory IC optimized for in-system reprogramming in space-constrained embedded systems. It features 512 pages × 264 bytes of main Flash memory, one 264-byte SRAM data buffer, SPI-compatible interface (Modes 0 and 3), 13 MHz max clock frequency, and hardware page write protection via the WP pin - enabling reliable firmware storage in digital voice, image, and data logging applications.
For engineers reviewing the AT45DB011-JC datasheet, AT45DB011-JC pinout, AT45DB011-JC application, or AT45DB011-JC equivalent, key selection considerations include its single-supply 2.7–3.6V operation, page-erase flexibility (page/block), 7 ms typical page program time, 120 µs page-to-buffer transfer, and TSSOP-14 package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The AT45DB011-JC implements a serial peripheral interface (SPI) with dual-mode support (Mode 0 and Mode 3), using CS, SCK, SI, and SO signals for command/data transfer. Its architecture separates 512×264-byte main memory from a dedicated 264-byte SRAM buffer, enabling non-blocking operations like page-to-buffer transfer and buffer-to-page program with built-in erase.
All programming and erase cycles are fully self-timed - no external timing control required - and supported by status register polling (RDY/BUSY bit 7) or RDY/BUSY pin assertion. Hardware write protection (WP pin) restricts reprogramming of the first 256 pages unless actively deasserted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1,081,344 bits organized as 512 pages × 264 bytes - supports efficient sector-level firmware updates without full-chip erase. |
| Supply Voltage | 2.7 V to 3.6 V - enables direct integration with 3.3 V logic systems without level-shifting or auxiliary supplies. |
| Max Clock Frequency | 13 MHz - delivers up to ~1.6 MB/s effective serial throughput for high-speed data logging. |
| Page Program Time | 7 ms typical - enables rapid field firmware patching with minimal system downtime. |
| Page-to-Buffer Transfer | 120 µs typical - allows fast read-modify-write sequences without host CPU buffering overhead. |
| Active Read Current | 4 mA typical at 13 MHz / 3.6 V - supports low-power portable designs during active data retrieval. |
| Standby Current | 2 µA typical - ensures ultra-low quiescent power in battery-backed or always-on monitoring nodes. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade deployment in harsh environmental conditions. |
Pinout & Package
AT45DB011-JC is packaged in a 14-lead TSSOP (Thin Shrink Small Outline Package), 0.170" wide, with exposed pad not electrically connected. Pin 1 is marked by a beveled corner; pin numbering follows standard counter-clockwise orientation from top-left when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for SPI command initiation; must remain low during full instruction sequence (opcode + address + data). |
| SCK | Serial Clock | Master-generated clock synchronizing all SI/SO data transfers; supports both Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1). |
| SI | Serial Input | Host-provided command opcodes, addresses, and write data; MSB-first transmission required. |
| SO | Serial Output | Device-driven read data, status register bits, or dummy cycles; tri-stated when CS is high. |
| WP | Hardware Page Write Protect | Low = locks first 256 pages against reprogramming; internal pull-up allows omission if unused. |
| RESET | Chip Reset | Active-low signal forcing idle state; internal POR circuit eliminates external reset IC requirement. |
| RDY/BUSY | Open-drain Ready/Busy Indicator | Drives low during self-timed operations (program/erase/transfer); requires external pull-up resistor. |
| VCC | Power Supply | Single 2.7–3.6 V supply powering core logic, Flash array, and I/O buffers. |
| GND | Ground Reference | Common return path for VCC and all digital I/O; recommended low-inductance connection near device. |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle page erase + program | Eliminates separate erase step - reduces firmware update latency and simplifies host driver logic. |
| Dedicated 264-byte SRAM buffer | Enables concurrent host data preparation while Flash operations execute - improves system throughput. |
| Page and block erase options | Supports granular wear leveling and partial-sector updates - extends Flash endurance beyond 100,000 cycles per page. |
| Hardware write protection (WP) | Prevents accidental overwrite of boot code or calibration data stored in first 256 pages - enhances field reliability. |
| Internal program/control timer | Removes need for precise host timing control - simplifies firmware integration across diverse microcontroller platforms. |
| CMOS/TTL-compatible I/O | Ensures interoperability with legacy 5 V microcontrollers via level translation or direct 3.3 V logic interfaces. |
Applications
| Industrial Data Logger | Digital Voice Recorder |
|---|---|
Use Scenario: Continuous sensor data capture (temperature, pressure, vibration) in remote oil-field telemetry units with limited power budget and no maintenance access. IC Role / Device Role / Timing Role: Nonvolatile storage for timestamped measurement records; serves as primary firmware update target for over-the-air patches. Use Value: 2 µA standby current extends battery life to >5 years; 7 ms page program enables real-time logging at 100 Hz sample rate without data loss. | Use Scenario: Portable medical voice annotation device capturing clinician notes in hospitals with strict EMI requirements. IC Role / Device Role / Timing Role: Serial Flash memory storing compressed audio clips; accessed via SPI from low-cost ARM Cortex-M0 host MCU. Use Value: TSSOP-14 footprint minimizes PCB area; 13 MHz interface sustains 1.2 MB/s playback streaming; hardware WP prevents corruption of preloaded voice prompts. |
| Smart Meter Firmware Storage | Embedded Image Cache |
Use Scenario: Electricity/water meter requiring secure, long-life firmware storage compliant with IEC 62056 and DLMS/COSEM standards. IC Role / Device Role / Timing Role: Host MCU writes encrypted firmware images to AT45DB011-JC during field upgrades; RDY/BUSY pin coordinates safe power-down sequencing. Use Value: –40°C to +85°C rating ensures operation in outdoor meter enclosures; page-erase granularity avoids invalidating entire application during delta updates. | Use Scenario: Industrial HMI display caching UI assets (icons, fonts, splash screens) to reduce boot time and external memory bandwidth. IC Role / Device Role / Timing Role: SPI-connected memory holding compressed bitmap resources; accessed on-demand by display controller DMA engine. Use Value: 120 µs page-to-buffer transfer enables sub-millisecond asset loading; 264-byte buffer allows zero-copy rendering of tile-aligned graphics. |
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-JC | Revised revision with improved ECC, tighter tEP/tP specs, and updated status register density coding; pinout and command set identical. | Required for new designs per Microchip recommendation; supports same industrial temp range and TSSOP-14 package. | Select AT45DB011B-JC for production releases; AT45DB011-JC remains viable for legacy repair or existing BOM continuity. |
| W25X10CLSNIG | 1 Mbit SPI NOR Flash (Winbond); lacks integrated SRAM buffer, no page-to-buffer transfer, uses standard sector/sector erase instead of page/block. | Better suited for execute-in-place (XIP) code storage; less optimal for frequent small-data updates due to 4 kB minimum erase granularity. | Choose W25X10CLSNIG only when buffer-less architecture suffices and cost sensitivity outweighs update flexibility. |
Compared with AT45DB011B-JC, the AT45DB011-JC lacks enhanced ECC and has looser program timing tolerances, making it suitable for legacy systems but not recommended for new designs; versus W25X10CLSNIG, it offers superior in-system reprogrammability via page-level erasure and integrated buffer - critical for dynamic data logging and firmware patching.
Availability
AT45DB011-JC is available at Aetrix Electronics and suitable for industrial data loggers, digital voice recorders, smart meter firmware storage, and embedded image cache applications requiring stable component supply across extended product lifecycles.
Supply support for AT45DB011-JC 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 company specializing in microcontrollers, analog devices, Flash memory, and security solutions for industrial, automotive, and consumer markets.
The AT45DB011-JC belongs to Microchip's DataFlash family - designed specifically for high-reliability, low-pin-count serial Flash applications where in-system reprogrammability, page-level granularity, and integrated buffer efficiency are essential.
FAQ
What is the maximum clock frequency supported by the AT45DB011-JC?
The AT45DB011-JC supports a maximum serial clock (SCK) frequency of 13 MHz under specified operating conditions (VCC = 2.7–3.6 V, TA = –40°C to +85°C). This enables high-throughput data transfers while maintaining timing compliance per AC characteristics table - including minimum SCK high/low times of 35 ns and setup/hold margins for SI/SO signals.
Does the AT45DB011-JC require a high-voltage programming supply?
No, the AT45DB011-JC operates entirely from a single 2.7–3.6 V supply for both read and program/erase operations. It does not require elevated voltages (e.g., 12 V) or charge pumps - all internal programming and erase functions are self-timed and powered directly from VCC, simplifying power design and eliminating external HV circuitry.
How many pages and what size is the main memory in the AT45DB011-JC?
The AT45DB011-JC contains 512 pages of main Flash memory, each exactly 264 bytes (256 data + 8 overhead bytes). Total capacity is 1,081,344 bits (1 Mbit), with page addressing implemented via 9-bit PA8–PA0 fields in command opcodes - enabling direct random access to any page without sequential scanning.
What is the function of the RDY/BUSY pin on the AT45DB011-JC?
The RDY/BUSY pin on the AT45DB011-JC is an open-drain output that drives low during internally self-timed operations - including page program, page/block erase, page-to-buffer transfer, and main memory compare. It provides hardware flow control, allowing the host to pause command issuance until the device signals readiness via high-state restoration (with external pull-up).
Can the AT45DB011-JC be used in industrial temperature environments?
Yes, the AT45DB011-JC is rated for industrial temperature operation from –40°C to +85°C, as confirmed by its ordering code suffix "-JI" (industrial) and validated DC/AC specifications across this range. The -JC variant is commercial grade (0°C to +70°C), but the same die and architecture support both grades - ensuring consistent behavior in extended thermal profiles when properly derated.
AT45DB011-JC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- 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:
- 32-PLCC (13.97x11.43)
AT45DB011-JC FAQ
1.How can I place an order for AT45DB011-JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB011-JC 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-JC reliable?
The price and inventory of AT45DB011-JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT45DB011-JC is usually 5 days.
3.What payment methods are accepted for AT45DB011-JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB011-JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB011-JC?
AT45DB011-JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB011-JC 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-JC?
For technical support, including AT45DB011-JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB011-JC requirements.
6.How does Aetrix verify that AT45DB011-JC is sourced from the original manufacturer or authorized distributors?
All AT45DB011-JC 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-JC meets industry standards.
7.What is the process for return or replacement of AT45DB011-JC?
All AT45DB011-JC units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB011-JC, 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-JC part is unused and in its original packaging.
Return procedure for AT45DB011-JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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