AT25SF321B and AT25SF321 Programming

Is there a difference between AT25SF321B and AT25SF321 other than speed and operating voltage and with a programmer that can program AT25SF321, can I program AT25SF321B too?

  • Hi Egemen,
    The letter B indicates that this part is a newer part than AT25SF321 (see attachment).

    AT25SF321B has a 108 MHz Maximum Operating Frequency vs 104 MHz for AT25SF321
    AT25SF321B Operating voltages 2.7 V - 3.6 V vs 2.5 V - 3.6 V for AT25SF321
    AT25SF321B Deep Power Down Current (1 μA typical) vs 2 μA for AT25SF321
    AT25SF321B has an Additional read command Quad-I/O Word Fast Read (E7h)

    Yes, you can program the AT25SF321B too.

    Best regards,
    Renesas Electronics Online Support