MLX90132 Datasheet, PDF (7/44 Pages) Melexis Microelectronic Systems – 13.56MHz RFID / NFC Transceiver

MLX90132
13.56MHz RFID / NFC Transceiver
In Reader state, the MLX90132 is able to communicate with Transponder (TAG). In TAG emulation state, the
MLX90132 is able to communicate with a reader by emulating a Transponder. Both states could be entered
using the Protocol select command (0x02). In Ready state, the MLX90132 is fully enabled but waiting for the
required command to enter either the Reader or the TAG Emulation state, without settling time penalty.
Please note the IDLE mode could be entered directly from Reader/Tag emulation state by sending the Idle
command (0x07), no need to return to READY state to access the IDLE mode.
The command Protocol select command (0x02) with the option field OFF is used to return from Reader/Tag
emulation state to Ready state.
POR
Supply OFF
Power-up
Start-up events:
- Low pulse IRQ_IN
START
ACTIVE
Command_W^“a^{IDkeL-Eu”p}
Ready
Command
“PROTOCOL SELECT”
Reader/TAG
emulation
W^C_a^o_k^m_e-^m_up^and
Note: Command “Protocol Select, field
OFF” is used to return to Ready state
“IDLE”
IDLE
Sleep
Wake-up events:
- Low pulse IRQ_IN
- Low pulse SPI_NSS
- Timer
- Field detector
Hibernate
Wake-up events:
- Low pulse IRQ_IN
TAG detector
Wake-up events:
- Low pulse IRQ_IN
- Low pulse SPI_NSS
- Timer
- TAG detector
Figure 3: MLX90132 Power modes transitions
3901090132
Rev. 009
Page 7 of 44
Jan-2014