參數(shù)資料
型號(hào): MFRC52201HN1
廠商: NXP Semiconductors N.V.
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Contactless reader IC
封裝: MFRC52201HN1<SOT617-1 (HVQFN32)|<<http://www.nxp.com/packages/SOT617-1.html<1<Always Pb-free,;MFRC52201HN1<SOT617-1 (HVQFN32)|<<http://www.nxp.com/packages/SOT617-1.html&
文件頁(yè)數(shù): 30/92頁(yè)
文件大?。?/td> 691K
代理商: MFRC52201HN1
MFRC522_35
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.5 — 21 June 2010
112135
30 of 92
NXP Semiconductors
MFRC522
Contactless reader IC
The timer can be started manually using the ControlReg register’s TStartNow bit and
stopped using the ControlReg register’s TStopNow bit.
The timer can also be activated automatically to meet any dedicated protocol
requirements by setting the TModeReg register’s TAuto bit to logic 1.
The delay time of a timer stage is set by the reload value + 1. The total delay time (t
d
) is
calculated using
Equation 5
:
(5)
An example of calculating total delay time (t
d
) is shown in
Equation 6
, where the
TPrescaler value = 4095 and TReloadVal = 65535:
(6)
Example:
To give a delay time of 25
μ
s requires 339 clock cycles to be counted and a
TPrescaler value of 169. This configures the timer to count up to 65535 time-slots for
every 25
μ
s period.
t
d
---------------------------------------------------------------------------------------------------------
13.56 MHz
(
)
=
39.59 s
----------------------------------------------------------------------
13.56 MHz
(
)
=
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MFRC52201HN1,151 功能描述:RFID應(yīng)答器 Contactless Reader 32-Pin RoHS:否 制造商:Murata 存儲(chǔ)容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
MFRC52201HN1,157 功能描述:RFID應(yīng)答器 CL READER IC’S RoHS:否 制造商:Murata 存儲(chǔ)容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
MFRC52201HN1/TRAYB 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Contactless reader IC