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AT45DB161B
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MFG:ATMEL D/C:07+

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Part Number: AT45DB161B

MFG: ATMEL

D/C: 07+

Description: The AT45DB161B is a 2.5-volt or 2.7-volt only, serial interface Flash memory ideally suited for a wide variety of digit...

AT45DB161B General Description

The AT45DB161B is a 2.5-volt or 2.7-volt only, serial interface Flash memory ideally suited for a wide variety of digital voice-, image-, program code- and data-storage applications. Its 17,301,504 bits of memory are organized as 4096 pages of 528 bytes each. In addition to the main memory, the AT45DB161B also contains two SRAM data buffers of 528 bytes each. The buffers allow receiving of data while a page in the main memory is being reprogrammed, as well as writing a continuous data stream. EEPROM emulation (bit or byte alterability) is easily handled with a self-contained three step Read-Modify-Write operation.Unlike conventional Flash memories that are accessed randomly with multiple address lines and a parallel interface, the DataFlash uses a SPI serial interface to sequentially access its data. DataFlash supports SPI mode 0 and mode 3. The simple serial interface facilitates hardware layout, increases system reliability, minimizes switching noise, and reduces package size and active pin count. The device is optimized for use in many commercial and industrial applications where high density, low pin count, low voltage, and low power are essential. The device operates at clock frequencies up to 20 MHz with a typical active read current consumption of 4 mA.

To allow for simple in-system reprogrammability, the AT45DB161B does not require high input voltages for programming. The device operates from a single power supply, 2.5V to 3.6V or 2.7V to 3.6V, for both the program and read operations. The AT45DB161B is enabled through the chip select pin (CS) and accessed via a three-wire interface consisting of the Serial Input (SI), Serial Output (SO), and the Serial Clock (SCK).

All programming cycles are self-timed, and no separate erase cycle is required before programming.

When the device is shipped from Atmel, the most significant page of the memory array may not be erased. In other words, the contents of the last page may not be filled with FFH.

AT45DB161B Maximum Ratings

Operating Temperature.................... -55°C to +125°C

Storage Temperature ...................... -65°C to +150°C

All Input Voltages
(including NC Pins)
with Respect to Ground ........................-0.6V to +6.25V

All Output Voltages
with Respect to Ground ..................-0.6V to V_CC + 0.6V

AT45DB161B Features

• Single 2.5V - 3.6V or 2.7V - 3.6V Supply
• Serial Peripheral Interface (SPI) Compatible
• 20 MHz Max Clock Frequency
• Page Program Operation
   Single Cycle Reprogram (Erase and Program)
   4096 Pages (528 Bytes/Page) Main Memory
• Supports Page and Block Erase Operations
• Two 528-byte SRAM Data Buffers Allows Receiving of Data while Reprogramming of Nonvolatile Memory
• Continuous Read Capability through Entire Array
   Ideal for Code Shadowing Applications
• Low Power Dissipation
   4 mA Active Read Current Typical
   2 µA CMOS Standby Current Typical
• Hardware Data Protection Feature
• 100% Compatible to AT45DB161
• 5.0V-tolerant Inputs: SI, SCK, CS, RESET and WP Pins
• Commercial and Industrial Temperature Ranges
• Green (Pb/Halide-free) Packaging Options

AT45DB161B Connection Diagram

AT45DB161B datasheet

AT45DB161B
PDF/DataSheet Download

Datasheet: AT45DB161B
File Size: 359955 KB
Manufacturer: ATMEL [ATMEL Corporation]
Click here to Download

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