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AT45DB041E-SHN-T

4Mbit DataFlash, SPI, 85MHz, SOIC-8

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جزء الشركة المصنعة ： جزء الشركة المصنعة

AT45DB041E-SHN-T

الحزمة ： الحزمة

SOIC-8 (5.3x6.2mm)

الوصف

نظرة عامة على المنتج

The AT45DB041E-SHN-T from Microchip is a 4Mbit DataFlash memory with SPI interface, 85MHz clock, dual SRAM buffers, and page-level operation in SOIC-8 for data logging.

المواصفات الرئيسية

الحزمة

SOIC-8 (5.3×6.2mm)

الميزات

See datasheet for complete specifications
Industry-standard package

التطبيقات

Industrial control
Consumer electronics
Communication equipment
Power management

مقدمة المنتج:AT45DB041E-SHN-T مقدمة المنتج

The AT45DB041E-SHN-T from Microchip is a 4Mbit DataFlash memory with SPI interface, 85MHz clock, dual SRAM buffers, and page-level operation in SOIC-8 for data logging.

مبدأ العمل:AT45DB041E-SHN-T مبدأ العمل

The AT45DB041E-SHN-T is a 4Mbit (512KB) DataFlash from Dialog/Renesas (formerly Adesto/Atmel) in SOIC-16, with 85MHz SPI interface. Unlike standard SPI NOR Flash devices that use 256-byte sectors, the AT45DB041E uses a dual-SRAM buffer architecture: it contains two 256-byte SRAM buffers that allow page-write operations without erase cycles. To write data: (1) load data into Buffer 1 (or Buffer 2) via SPI, (2) issue a Buffer-to-Main-Memory-Page-Program command that copies the buffer to a flash page with auto-erase. This eliminates the separate erase step required by standard SPI Flash. The 4Mbit memory is organized as 2048 pages of 256 bytes each. The device supports three read modes: (1) Continuous Array Read – reads sequentially from any starting address; (2) Buffer Read – reads from the SRAM buffer; (3) Main Memory Page Read – reads a specific page with auto-buffer load. The dual buffers allow simultaneous read-from-one and write-to-other, enabling seamless data streaming. The WP pin protects the first two sectors (security sectors) from accidental writes, useful for storing boot code or configuration data. The Deep Power-Down mode reduces current to 7uA. The 85MHz SPI clock supports fast firmware boot and data logging. The DataFlash architecture is particularly suited for data logging applications where small writes are frequent.

وصف الدبوس:AT45DB041E-SHN-T تعريف الدبوس ووظائفه

دبوس	الاسم	النوع	الوظيفة
1	SI	المدخلات	SPI data input (MOSI)
2	SO	المخرجات	SPI data output (MISO, high-Z when CS HIGH)
3	WP	المدخلات	Hardware write protect (active LOW protects sector 0 and 1)
4	GND	الطاقة	أرضي
5	SI/SIO2	الإدخال/الإخراج	SPI data input / Dual/Quad SPI data 2
6	إعادة الضبط	المدخلات	Reset (active LOW, resets internal state machine)
7	CS	المدخلات	Chip select (active LOW, starts and stops SPI transactions)
8	SCK	المدخلات	SPI clock (up to 85MHz)
9-16	VCC/NC/SIO3	Power/-/I/O	Supply, no-connects, Quad SPI data 3

Application Scenarios:In which products and applications isAT45DB041E-SHN-T مستعمل

Industrial control

Consumer electronics

Communication equipment

Power management

Alternative Models:What chips are recommended as replacements for AT45DB041E-SHN-T

الشركة المصنعة	رقم الجزء	الحزمة	الملاحظات
Dialog/Renesas	AT45DB041E-SSHN-B	SOIC-8	Same device, different package
Dialog/Renesas	AT45DB081E-SHN-T	SOIC-16	8Mbit version, double density
وينبوند	W25X40CLSNIG	SOIC-8	4Mbit SPI Flash, standard SPI
ماكرونيكس	MX25L4006EM1I-12G	SOIC-8	4Mbit SPI NOR Flash, 133MHz
الرقاقة الدقيقة	SST25VF040B-50-4I-SN	SOIC-8	4Mbit SPI Flash, 50MHz