參數(shù)資料
型號: MFRC50001T
廠商: NXP Semiconductors N.V.
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Highly integrated ISO-IEC 14443 A reader IC
封裝: MFRC50001T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html<1<week 15, 2005,;
文件頁數(shù): 23/110頁
文件大?。?/td> 841K
代理商: MFRC50001T
MFRC500_33
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.3 — 15 March 2010
048033
23 of 110
NXP Semiconductors
MFRC500
Highly Integrated ISO/IEC 14443 A Reader IC
9.5.3
Timer unit registers
Table 18
shows the related flags of the timer unit in alphabetical order.
Table 18.
Flags
TAutoRestart
TimerValue[7:0]
9.6 Power reduction modes
9.6.1
Hard power-down
Hard power-down is enabled when pin RSTPD is HIGH. This turns off all internal current
sinks including the oscillator. All digital input buffers are separated from the input pads and
defined internally (except pin RSTPD itself). The output pins are frozen at a given value.
The status of all pins during a hard power-down is shown in
Table 19
.
Table 19.
Symbol
OSCIN
IRQ
MFIN
MFOUT
TX1
Associated timer unit registers and flags
Register name
TimerClock
TimerValue
Bit
5
7 to 0
Register address
2Ah
0Ch
TReloadValue[7:0]
TPreScaler[4:0]
TRunning
TStartNow
TStartTxBegin
TStartTxEnd
TStopNow
TStopRxBegin
TStopRxEnd
TimerReload
TimerClock
SecondaryStatus
Control
TimerControl
TimerControl
Control
TimerControl
TimerControl
7 to 0
4 to 0
7
1
0
1
2
2
3
2Ch
2Ah
05h
09h
2Bh
2Bh
09h
2Bh
2Bh
Signal on pins during Hard power-down
Pin
1
2
3
4
5
Type
I
O
I
O
O
Description
not separated from input, pulled to AVSS
high-impedance
separated from input
LOW
HIGH, if bit TX1RFEn = logic 1
LOW, if bit TX1RFEn = logic 0
HIGH, only if bit TX2RFEn = logic 1 and bit
TX2Inv = logic 0
otherwise LOW
separated from input
separated from input
separated from input
separated from input
separated from input
separated from input
separated from input
separated from input
high-impedance
TX2
7
O
NCS
NWR
NRD
D0 to D7
ALE
A0
A1
A2
AUX
9
10
11
13 to 20
21
22
23
24
27
I
I
I
I/O
I
I/O
I
I
O
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