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| 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)： | 17/92頁(yè) |
| 文件大小： | 691K |
| 代理商： | MFRC52201HN1 |
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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
17 of 92
NXP Semiconductors
MFRC522
Contactless reader IC
8.1.4.4
Acknowledge
An acknowledge must be sent at the end of one data byte. The acknowledge-related clock
pulse is generated by the master. The transmitter of data, either master or slave, releases
the SDA line (HIGH) during the acknowledge clock pulse. The receiver pulls down the
SDA line during the acknowledge clock pulse so that it remains stable LOW during the
HIGH period of this clock pulse.
The master can then generate either a STOP (P) condition to stop the transfer or a
repeated START (Sr) condition to start a new transfer.
A master-receiver indicates the end of data to the slave-transmitter by not generating an
acknowledge on the last byte that was clocked out by the slave. The slave-transmitter
releases the data line to allow the master to generate a STOP (P) or repeated START (Sr)
condition.
Fig 14. Acknowledge on the I
2
C-bus
mbc602
S
START
condition
9
8
2
1
clock pulse for
acknowledgement
not acknowledge
acknowledge
data output
by transmitter
data output
by receiver
SCL from
master
Fig 15. Data transfer on the I
2
C-bus
msc608
Sr
or
P
SDA
Sr
P
SCL
STOP or
repeated START
condition
S
or
Sr
START or
repeated START
condition
1
2
3 - 8
9
ACK
9
ACK
7
8
1
2
MSB
acknowledgement
signal from slave
byte complete,
interrupt within slave
clock line held LOW while
interrupts are serviced
acknowledgement
signal from receiver
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| MFRC52201HN1,115 | 功能描述:RFID應(yīng)答器 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 |
| MFRC52201HN1,118 | 功能描述:RFID應(yīng)答器 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 |
| MFRC52201HN1,151 | 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 |
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