I would like to read and write to M24M01-A125 and need to know how to address each byte out of 128Kbytes. If I am writing a byte to the very first byte in memory section what are the values for Dev Select, and two byte addresses in figure 6? Thanks, hn

[Pierre P.]

​Hello,

• For read, you have to send the dev select and the 1st address (Address: 0x00 + 0x00) and then read-out the 128Kbytes ( there is a roll-over in read).

1st Dev Select : 10101 E2 E1 0 0  / 2nd Dev Sel: 10101 E2 E1 0 1

E1,E2 depend on the hardware connection value on pin 2 & 3

• For write, you can write  one page (up to 256bytes max) per each write command. So 1024 write instruction must be sent and address must be sent according the the first address value of each page.

Best Regards

Team EEPROM suPPort