Adesto Technologies AT25PE40 Series Serial Flash Memory is a 4-Mbit DataFlash-L, 1.65V minimum, and serial-interface sequential access page erase memory. This AT25PE40 series memory device features 4,194,304 bits of memory organized as 2,048 pages of 256 bytes or 264 bytes each. The AT25PE40 series operates from a single 1.65V to 3.6V power supply for the erase, program, and read operations. The flash memory contains two SRAM buffers of 256 or 264 bytes each, in addition to the main memory. These buffers allow receiving of data while a page in the main memory is being reprogrammed. The AT25PE40 series is ideally suited for a wide variety of digital voice, image, program code, and data storage applications.
Features
Single 1.65V to 3.6V supplySerial Peripheral Interface (SPI) compatibleSupports SPI modes 0 and 3Supports RapidS™ operationContinuous read capability through entire arrayUp to 85MHzLow-power read option up to 15MHzMaximum Clock-to-output time (t
V) of 6nsFlexible programming optionsByte or page program (1 to 256 or 264 bytes) directly into main memoryBuffer WriteBuffer to main memory page program20 years data retentionComplies with full industrial temperature range
Specifications
40ºC to 85ºC operating temperature range1.65V to 3.6V VCC power supply70MHz (maximum) serial clock frequency15ms typical page erase and programming time (256 or 264 bytes)
