MFRC52201HN1 NXP Semiconductors, MFRC52201HN1 Datasheet - Page 58

• Manufacturer Part Number: MFRC52201HN1
• Description: RFID Modules & Development Tools CL READER IC'S
• Manufacturer: NXP Semiconductors

Specifications of MFRC52201HN1

• Data Rate: 3.4 Mbps
• Operating Temperature Range: + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MFRC52201HN1,157

NXP Semiconductors
MFRC522_33
Product data sheet
PUBLIC
9.3.3.11 TReloadReg register
Table 106. TModeReg register bit descriptions
Table 107. TPrescalerReg register (address 2Bh); reset value: 00h bit allocation
Table 108. TPrescalerReg register bit descriptions
Defines the 16-bit timer reload value.
Bit
7
6 to 5
4
3 to 0
Bit
Symbol
Access
Bit
7 to 0
Symbol
TAuto
TGated[1:0]
TAutoRestart
TPrescaler_Hi
[3:0]
Symbol
TPrescaler_Lo[7:0] defines the lower 8 bits of the TPrescaler value
7
Rev. 3 — 26 October 2009
6
Value
1
0
00
01
10
11
1
0
-
Description
the following formula is used to calculate f
where 13.56 is the carrier frequency in MHz; for detailed
description, see
f
timer
112133
5
Description
timer starts automatically at the end of the transmission in all
communication modes at all speeds
if the RxModeReg register’s RxMultiple bit is not set, timer
stops immediately after receiving the first data bit
if the RxMultiple bit is set to logic 1 the timer never stops, in
which case the timer can be stopped by setting the
ControlReg register’s TStopNow bit to logic 1
indicates that the timer is not influenced by the protocol
internal timer is running in gated mode
Remark: in gated mode, the Status1Reg register’s TRunning
bit is logic 1 when the timer is enabled by the TModeReg
register bits
this bit does not influence the gating signal
timer automatically restarts its count-down from the 16-bit
timer reload value instead of counting down to zero
timer decrements to 0 and the ComIrqReg register’s
TimerIRq bit is set to logic 1
defines the higher 4 bits of the TPrescaler value
the following formula is used to calculate f
where 13.56 is the carrier frequency in MHz; for detailed
description, see
f
=
timer
non-gated mode
gated by pin MFIN
gated by pin AUX1
-
-------------------------------------- -
TPrescaler
13.56 10
=
TPrescaler_Lo[7:0]
-------------------------------------- -
TPrescaler
Section 8.5 “Timer unit”
13.56 10
4
6
+
R/W
Section 8.5 “Timer unit”
1
6
+
1
3
2
timer
Contactless reader IC
MFRC522
:
© NXP B.V. 2009. All rights reserved.
timer
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