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PDF AT83C5123 Data sheet ( Hoja de datos )
| Número de pieza | AT83C5123 | |
| Descripción | Smart Card Reader ICs | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Addendum to Datasheet
This document is an addendum for the Smart Card Interface block concerning the “Ini-
tialization Procedure” section of the AT8xC5122/3 datasheet, available on the Atmel
web site.
Table 1. DCCKPS.7 (S:BFh) : MODE bit management
CVCC DC/DC Output voltage
LI pin
With Inductor
MODE bit
Start
5V 3V 1.8V
0
1 / 0(1)
1 / 0(1)
After VCARDOK = 1
0
1
1
No inductor
Start
111
After VCARDOK = 1
1
1
1
Notes: 1. 1 is recommended and 0 is allowed.
Figure 1. MODE bit start procedure
MODE = 1
Smart Card
Reader ICs
AT83C5122
AT83EC5122
AT85C5122
AT85EC5122
AT89C5122
AT83C5123
AT83EC5123
VCARD[1:0]= 5V
?
Inductor ?
MODE = 0
Refer to scib_hw_dcdcstart function in scib_lib.c & config.h from
scib_hid_usb_2_2_4.zip package.
Rev. 4372A–SCR–08/04
1
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