AN3972 datasheet(7/21 Pages) STMICROELECTRONICS

7 / 21 page

AN3972

Hardware kit

Doc ID 022161 Rev 1

7/21

Figure 3.

How to connect SPZB260-PRO adapter to the STM3210C-EVAL

The SPZB260-PRO is a 2.4 GHz ZigBee module compliant with FCC regulations (FCC ID:

S9NZB260A); for further information refer to the SPZB260-PRO datasheet. The M24LR64-

R is an EEPROM with both I2C interface and RF interface; this allows a “standard” memory

access for an MCU using the I2C and an access for a standard long range (ISO 15693/ISO

18000-3 mode 1) RFID reader. Using the RF interface, the memory can read/write even

when it is not powered. In this application, the EEPROM stores, in the first three 32-bit

memory locations, the TCP/IP network parameters:

●

IP address

●

Gateway IP address

●

IP address mask.

The parameters are programmed by the RFID reader with the board switched off and at the

power-on, during boot, the MCU reads the network parameters to configure the TCP/IP

stack. The 64-Kbit memory is organized into 8192 x 8 bits accessing from the I2C bus and

into 2048 x 32 bits accessing from the RF interface. M24LR64-R is the slave of the I2C

communication with STM32; the two jumpers included on the board are used to set the

slave address of the memory. For further information about M24LR64-R functionalities, refer

to the M24LR64-R datasheet; for information related to application development, several

application notes are available for downloading at www.st.com.

AN3972 Datasheet(PDF) 7 Page - STMicroelectronics