Setting up a Multi-Bank application

AN3250

12/16

Doc ID 17761 Rev 1

3.2

Setting up the Multi-Bank design

When setting up a multi-bank design, there are different ways to allocate (identify) the banks

depending on whether a microcontroller only, an RFID reader only or both a microcontroller

and an RFID reader are available during Multi-Bank programming.

3.2.1

Microcontroller only is available during setup

When only the microcontroller (I²C only) is available to program the Multi-Bank setting

information, it addresses each M24LR64-R device separately and stores the corresponding

UID in its volatile memory.

Figure 11.

Once the UIDs of the 4 devices are read, the Microcontroller programs the 4 UIDs at the end

of Bank #3, which is addressed with E0=E1=1.

●

Program UID of Bank (E0=0, E1=0) at address 0x07F8 and 0x07F9

●

Program UID of Bank (E0=1, E1=0) at address 0x07FA and 0x07FB

●

Program UID of Bank (E0=0, E1=1) at address 0x07FC and 0x07FD

●

Program UID of Bank (E0=1, E1=1) at address 0x07FE and 0x07FF

Ai18134

UID

UID

UID

UID

DSFID

DSFID

DSFID

DSFID

Bank

Bank

Bank

Bank

E0 = 0, E1 = 0

( = Bank 0)

E0 = 1, E1 = 0

( = Bank 1)

E0 = 0, E1 = 1

( = Bank 2)

E0 = 1, E1 = 1

( = Bank 3)

Microcontroller or ASIC

UID0 (E0 = 0, E1 = 0)

UID1 (E0 = 1, E1 = 0)

UID2 (E0 = 0, E1 = 1)

UID3 (E0 = 1, E1 = 1)

E0E1/UID

Mapping

area