AT45DB011B-SU

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AT45DB011B-SU

IC FLASH 1MBIT SPI 20MHZ 8SOIC

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사양

Supplier Microchip Technology
Package Tube
ProductStatus Obsolete
MemoryType Non-Volatile
MemoryFormat FLASH
Technology FLASH
MemorySize 1Mb (264 Bytes x 512 pages)
MemoryInterface SPI
ClockFrequency 20 MHz
WriteCycleTime-WordPage 15ms
Voltage-Supply 2.7V ~ 3.6V
OperatingTemperature -40°C ~ 85°C (TC)
MountingType Surface Mount
Package/Case 8-SOIC (0.209, 5.30mm Width)

개요

Description

AT45DB011B-SU is Atmel/Microchip’s 1-Mbit serial DataFlash memory with an SPI-compatible interface, packaged in an 8-pin SOIC (-SU).
Key points:
- Capacity and organization: 1 Mbit (128 KB) of non-volatile flash, organized as 256 pages of 512 bytes.
- Internal buffers: two 512-byte data buffers for fast writes (Buffer A/B) and a Buffer-to-Page transfer to memory.
- Operations: Read data (including continuous/streaming reads), Page Program (load a buffer then write to a page), Sector erase (4 KB), and Bulk/Chip erase.
- Interface and timing: Standard SPI signals (SCK, MOSI, MISO, CS); supports high-speed SPI as per datasheet.
- Power and packaging: 2.7–3.6V supply; operates over a wide temperature range; -SU indicates the 8-pin SOIC package.
- Use cases: Small embedded storage for firmware, data logging, logs, or any application needing persistent, random-access storage with efficient page/sector erases.
Note: For exact timing, voltage, and command details, refer to the AT45DB011B datasheet.

Features

AT45DB011B-SU is a 1-Mbit Serial DataFlash memory from Atmel. Key features:
- SPI-compatible serial interface (4-wire SPI), typically up to 40 MHz
- Organization: 1 Mb total (128 KB usable) flash
- Dual internal data buffers for fast data transfers
- Page-based memory with 512-byte pages; supports buffer-to-page programming
- Page erase and sector/block erase options
- Random and sequential/continuous read modes
- Endurance ≈ 100,000 program/erase cycles; data retention around 20 years
- Low power operation: supply 2.7–3.6 V; standby and deep power-down modes
- Temperature range: −40 to 85 °C
- Package: 8-pin SOIC (SU) with WP/HOLD protection pins
- Simple command set with status register and busy indication
Note: Exact buffer sizes and some timing figures vary by revision; refer to the datasheet for precise specs.

Package

An 8-pin SOIC (Small Outline Integrated Circuit) package.

Pinout

- Pin count: 8 (SOIC-8, suffix -SU)
- Function: 1-Mbit SPI serial DataFlash memory (flash storage). Interfaces via CS, SCK, DI (MOSI), DO (MISO); with /WP (write protect), /HOLD, plus VCC and GND.

Manufacturer

- Manufacturer: Atmel Corporation (now Microchip Technology).
- What kind of company: A semiconductor company that designs and manufactures memory devices (DataFlash) and microcontrollers; Atmel was acquired by Microchip Technology in 2016.

Application

AT45DB011B-SU is a 1‑Mbit SPI Serial DataFlash. Common applications:
- Firmware storage and patching/boot code
- Data logging and buffering for sensors/communications
- Storing configuration, calibration data, and lookup tables
- Event logs in industrial/automotive equipment
- Portable/consumer devices, printers, and basic network gear as local nonvolatile memory

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