Pm25LQ040B memory equivalent, 4m-bit 3v quad serial flash memory.
* Industry Standard Serial Interface - Pm25LQ040B: 4Mbit/512Kbyte - Pm25LQ020B: 2Mbit/256Kbyte - Pm25LQ010B: 1Mbit/128Kbyte - Pm25LQ512B: 512Kbit/64Kbyte - 256-bytes .
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