NXP Semiconductors PN7462 series User Manual page 34

NXP Semiconductors
(2)
PN7462 family
(1) Powering the microcontroller and the digital blocks (DVDD)
(2) (3) 2 possibilities for powering the pad interfaces (PVDD_IN and PVDD_M_IN)
Remark: The capacitance must be chosen so that the capacitance value is correct 5 V.
Fig 10. Powering the PN7462 family microcontroller
6.1.2 Contactless reader supply
In order to use the PN7462 family as contactless reader the following voltages need to
be supplied:
• VBUS
• PVDD_IN (if PVDD_OUT is not used, it needs to be shorted to GND)
• TVDD_IN (If supplied by TVDD_OUT, VUP_TX needs to be supplied)
• DVDD pin must be connected to VDD and buffered with 1µF capacitor to GND
For SPI/ I²C master following supply is also needed:
• PVDD_M_IN
The contactless interface is powered through TVDD_IN. This pin can be supplied either
externally or by using TVDD_OUT.
UM10858
User manual
COMPANY PUBLIC
(1)
GND
T VSS
PN7462 family
GNDC
GNDP
VBUS
V
DDP(VBUS)
VBUSP
I
DDP(VBUS)
1 µF
PVDD_OUT
PVDD_IN
1 µF
PVDD_M_IN
All information provided in this document is subject to legal disclaimers.
Rev. 1.4 — 14 May 2018
VBUS
V
DDP(VBUS)
VBUSP
I
DDP(VBUS)
1 µF
VDD
DVDD
1 µF
(3)
,
PN7462 family
314514
UM10858
PN7462 family HW user manual
,
VBUS
V
DDP(VBUS)
VBUSP
I
DDP(VBUS)
1 µF
PVDD_OUT
PVDD_IN
external supply
PVDD_M_IN
1 µF
© NXP B.V. 2018. All rights reserved.
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