mfrc52301hn1-trayb NXP Semiconductors, mfrc52301hn1-trayb Datasheet - Page 61
mfrc52301hn1-trayb
Manufacturer Part Number
mfrc52301hn1-trayb
Description
Contactless Reader Ic
Manufacturer
NXP Semiconductors
Datasheet
1.MFRC52301HN1-TRAYB.pdf
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MFRC523_33
Product data sheet
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9.2.3.12 TCounterValReg register
9.2.3.11 TReloadReg register
Table 108. TPrescalerReg register bit descriptions
Defines the 16-bit timer reload value.
Remark: The reload value bits are contained in two 8-bit registers.
Table 109. TReloadReg (higher bits) register (address 2Ch); reset value: 00h bit allocation
Table 110. TReloadReg register higher bit descriptions
Table 111. TReloadReg (lower bits) register (address 2Dh); reset value: 00h bit allocation
Table 112. TReloadReg register lower bit descriptions
Contains the timer value.
Remark: The timer value bits are contained in two 8-bit registers.
Table 113. TCounterValReg (higher bits) register (address 2Eh); reset value: xxh bit
Bit
7 to 0
Bit
Symbol
Access
Bit
7 to 0
Bit
Symbol
Access
Bit
7 to 0
Bit
Symbol
Access
Symbol
TPrescaler_Lo[7:0] defines the lower 8 bits of the TPrescaler value
Symbol
TReloadVal_Hi
[7:0]
Symbol
TReloadVal_Lo
[7:0]
allocation
7
7
7
All information provided in this document is subject to legal disclaimers.
Rev. 3.3 — 5 March 2010
6
6
6
Description
defines the higher 8 bits of the 16-bit timer reload value
on a start event, the timer loads the timer reload value
changing this register affects the timer only at the next start event
Description
defines the lower 8 bits of the 16-bit timer reload value
on a start event, the timer loads the timer reload value
changing this register affects the timer only at the next start event
Description
the following formula is used to calculate f
where 13.56 is the carrier frequency in MHz and
TPreScaler = [TPrescaler_Hi:TPrescaler_Lo] (TPrescaler value on
12 bits); for detailed description, see
f
timer
115233
5
5
5
=
-------------------------------------- -
TPrescaler
13.56 10
TCounterVal_Hi[7:0]
TReloadVal_Lo[7:0]
TReloadVal_Hi[7:0]
×
4
4
4
+
6
R/W
R/W
1
R
3
3
3
Section 8.7 “Timer unit”
2
2
2
timer
Contactless reader IC
MFRC523
:
© NXP B.V. 2010. All rights reserved.
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