MF0ICU1001W(2010) Просмотр технического описания (PDF) - NXP Semiconductors.
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MF0ICU1001W Datasheet PDF : 28 Pages
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NXP Semiconductors
MF0ICU1
MIFARE Ultralight contactless single-ticket IC
8.2.1 Idle state
After a Power-On Reset (POR), the MF0ICU1 switches directly to the idle state. It only
exits this state when a REQA or a WUPA command is received from the PCD. Any other
data received while in the idle state is interpreted as an error and the MF0ICU1 remains
Idle.
After a correctly executed HALT command, the halt state changes to the wait state which
can be exited with a WUPA command.
8.2.2 Ready 1 state
In this state, the MF0ICU1 supports the PCD when resolving the first part of its UID
(3 bytes) with the ANTICOLLISION or SELECT command from cascade level 1. This state
is exited correctly after execution of either of the following commands:
• SELECT command from cascade level 1: the PCD switches the MF0ICU1 into
Ready 2 state where the second part of the UID is resolved.
• READ command (from address 0): all anticollision mechanisms are bypassed and the
MF0ICU1 switches directly to the active state.
Remark: If more than one MF0ICU1 is in the PCD field, a READ command from
address 0 causes a collision due to the different serial numbers and all MF0ICU1 devices
are selected. Any other data received in the Ready 1 state is interpreted as an error and
depending on its previous state the MF0ICU1 returns to the wait, idle or halt state.
8.2.3 Ready 2 state
In this state, the MF0ICU1 supports the PCD when resolving the second part of its UID
(4 bytes) with the cascade level 2 ANTICOLLISION command. This state is usually exited
using the cascade level 2 SELECT command.
Alternatively, state Ready 2 may be skipped using a READ command (from address 0) as
described in state Ready 1.
Remark: If more than one MF0ICU1 is in the PCD field, a READ command from
address 0 causes a collision due to the different serial numbers and all MF0ICU1 devices
are selected. The response of the MF0ICU1 to the cascade level 2 SELECT command is
the Select Acknowledge (SAK) byte. In accordance with ISO/IEC 14443 this byte
indicates if the anticollision cascade procedure has finished. It also defines the type of
device selected for the MIFARE architecture platform. The MF0ICU1 is now uniquely
selected and only this device will communicate with the PCD even when other contactless
devices are present in the PCD field. Any other data received when the device is in this
state is interpreted as an error and depending on its previous state the MF0ICU1 returns
to the wait, idle or halt state.
8.2.4 Active state
In the active state either a 16-byte READ or 4-byte WRITE command can be performed.
The HALT command exits either the READ or WRITE commands in their active state. Any
other data received when the device is in this state is interpreted as an error and
depending on its previous state the MF0ICU1 returns to the wait, idle or halt state.
MF0ICU1
Product data sheet
PUBLIC
All information provided in this document is subject to legal disclaimers.
Rev. 3.8 — 22 December 2010
028638
© NXP B.V. 2010. All rights reserved.
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