MFRC52301HN1,157 NXP Semiconductors, MFRC52301HN1,157 Datasheet - Page 32

• Manufacturer Part Number: MFRC52301HN1,157
• Description: IC READER 13.56MHZ 32-HVQFN
• Manufacturer: NXP Semiconductors

Specifications of MFRC52301HN1,157

• Frequency: 13.56MHz
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Rf Type: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935282956157

NXP Semiconductors
9. MFRC523 registers
MFRC523_34
Product data sheet
PUBLIC
9.1 Register bit behavior
The delay time is calculated by:
The time (t
Depending on the functionality of a register, the access conditions to the register can vary.
In principle, bits with same behavior are grouped in common registers. The access
conditions are described in
Table 20.
t
Abbreviation Behavior
R/W
D
R
W
reserved
d
Fig 23. Oscillator start-up time
=
device activation
------------- -
27 μs
1024
clock stable
clock ready
oscillator
osc
Behavior of register bits and their designation
=
) is the sum of t
37.74 μs
read and write These bits can be written and read by the microcontroller. Since
dynamic
read only
write only
-
-
All information provided in this document is subject to legal disclaimers.
Rev. 3.5 — 24 September 2010
Table
d
Description
they are used only for control purposes, their content is not
influenced by internal state machines, for example the
ComIEnReg register can be written and read by the
microcontroller. It will also be read by internal state machines but
never changed by them.
These bits can be written and read by the microcontroller.
Nevertheless, they can also be written automatically by internal
state machines, for example the CommandReg register changes
its value automatically after the execution of the command.
These register bits hold values which are determined by internal
states only, for example the CRCReady bit cannot be written
externally but shows internal states.
Reading these register bits always returns zero.
Registers which are indicated as being reserved must not be
changed. However, in the case of a write access, it is
recommended that 0 is always written.
Registers which are indicated as being reserved for future use or
are for production tests must not be changed.
115235
and t
20.
startup
.
t
startup
t
osc
Contactless reader IC
MFRC523
© NXP B.V. 2010. All rights reserved.
t
d
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