Motore di ricerca datesheet componenti elettronici
  Italian  ▼
ALLDATASHEETIT.COM

X  

Preview PDF HTML

AT89C5122D-RDRUM Scheda tecnica(PDF) 112 Page - ATMEL Corporation

Il numero della parte AT89C5122D-RDRUM
Spiegazioni elettronici  C51 Microcontroller with USB and Smart Card Reader Interfaces
PDF  208 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Produttore elettronici  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C5122D-RDRUM Scheda tecnica(HTML) 112 Page - ATMEL Corporation

Back Button AT89C5122D-RDRUM Datasheet HTML 108Page - ATMEL Corporation AT89C5122D-RDRUM Datasheet HTML 109Page - ATMEL Corporation AT89C5122D-RDRUM Datasheet HTML 110Page - ATMEL Corporation AT89C5122D-RDRUM Datasheet HTML 111Page - ATMEL Corporation AT89C5122D-RDRUM Datasheet HTML 112Page - ATMEL Corporation AT89C5122D-RDRUM Datasheet HTML 113Page - ATMEL Corporation AT89C5122D-RDRUM Datasheet HTML 114Page - ATMEL Corporation AT89C5122D-RDRUM Datasheet HTML 115Page - ATMEL Corporation AT89C5122D-RDRUM Datasheet HTML 116Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 112 / 208 page
background image
112
AT83R5122, AT8xC5122/23
4202F–SCR–07/2008
Detach Simulation
In order to be re-enumerated by the Host, the AT83R5122, AT8xC5122/23 has the pos-
sibility to simulate a DETACH-ATTACH of the USB bus.
The VREF output voltage is between 3.0V and 3.6V. This output can be connected to the
D+ pull-up as shown in Figure 60. This output can be put in high-impedance when the
DETACH bit is set to 1 in the USBCON register. Maintaining this output in high imped-
ance for more than 3 μs will simulate the disconnection of the device. When resetting
the DETACH bit, an ATTACH is then simulated. The USB controller should be enabled
to use this feature.
Figure 60.
Example of VREF Connection
Figure 61.
Disconnect Timing
D-
D+
D-
D+
GND
VCC
VREF
R1
USB-B Connector
1
2
3
4
R2
R3
D+
D-
V
SS
V
IL
V
IHZ(min)
Device
Disconnected
Disconnect
Detected
>= 2,5
μs



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


Scheda tecnica Scarica

Go To PDF Page


Link URL



Lei ha avuto il aiuto da alldatasheet?  [ DONATE ] 

Di alldatasheet   |   Richest di pubblicita   |   contatti   |   Privacy Policy   |   Collegamento alla scheda tecnica    |   scambio Link   |   Ricerca produttore
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com