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參數(shù)資料
| 型號(hào)： | CLRC632 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Multiple Protocol Contactless Reader IC |
| 中文描述： | 多協(xié)議非接觸式讀卡器IC |
| 文件頁(yè)數(shù)： | 93/163頁(yè) |
| 文件大?。?/td> | 948K |
| 代理商： | CLRC632 |
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Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
CL RC632
93
Confidential
10 POWER REDUCTION MODES
10.1 Hard Power Down
A Hard Power Down is enabled with HIGH on pin RSTPD. 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 certain value.
This is shown in the following table.
SYMBOL
PIN
TYPE
DESCRIPTION
OSCIN
1
I
Not separated from input, pulled to AVSS
IRQ
2
O
High impedance
MFIN
3
I
Separated from Input
MFOUT
4
O
LOW
HIGH, if TX1RFEn=1
TX1
5
O
LOW, if TX1RFEn=0
HIGH, only if TX2RFEn=1 and TX2Inv=0
TX2
7
O
LOW
NWR
9
I
Separated from Input
NRD
10
I
Separated from Input
NCS
11
I
Separated from Input
D0 to D7
13 to 20
I/O
Separated from Input
ALE
21
I
Separated from Input
A0
22
I/O
Separated from Input
A1
23
I
Separated from Input
A2
24
I
Separated from Input
AUX
27
O
High impedance
RX
29
I
Not changed
VMID
30
A
Pulled to AVDD
RSTPD
31
I
Not changed
OSCOUT
32
O
HIGH
Table 10-1: Signal on Pins during Hard Power Down
10.2 Soft Power Down
The Soft Power Down-mode is entered immediately by setting bit
PowerDown
in the
Control-Register
. All
internal current sinks are switched off (including the oscillator buffer).
In difference to the Hard Power Down-mode, the digital input-buffers are not separated by the input pads and
keep their functionality. The digital output pins do not change their state.
After resetting bit
PowerDown
in the
Control-Register
it needs 512 clocks until the Soft Power Down mode is
left indicated by the
PowerDown
bit itself. Resetting it does not immediately clear it. It is cleared
automatically by the CL RC632 when the Soft Power Down-Mode is left.
Note: If the internal oscillator is used, you have to take into account that it is supplied by AVDD and it will
take a certain time t
osc
until the oscillator is stable and the clock cycles can be detected by the internal logic.
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| CLRC63201T/0FE | 制造商:NXP Semiconductors 功能描述: |
| CLRC63201T/0FE,112 | 功能描述:RFID應(yīng)答器 I.CODE HS READER 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 |
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| CLRC663 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Contactless reader IC |
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