1
Addendum to Datasheet
This document is an addendum for the Smart Card Interface block concerning the “Ini-
tia lizati on Pr ocedu re” se ctio n of the AT8x C5122 /3 da tashe et, av ailab le on t he A tme l
web site.
Notes: 1. 1 is recommended and 0 is allowed.
Figu re 1. MODE bit start procedure
Refer to scib_hw_dcdcstart function in scib_lib.c & config.h from
scib_hid_usb_2_2_4.zip pack age.
Table 1. DCCKP S.7 (S:BFh) : MODE bit management
CVCC DC/DC Output voltage
LI pin MODE bit 5V 3V 1.8V
With Induct or Star t 0 1 / 0(1) 1 / 0(1)
After VCARDOK = 1 0 1 1
No inductor Star t 1 1 1
After VCARDOK = 1 1 1 1
MODE = 1
VCARD[1:0]= 5V
?
MODE = 0
Induct or ?
Rev. 4372A–SCR–08/04
Smart Card
Reader ICs
AT83C5122
AT83EC5122
AT85C5122
AT85EC5122
AT89C5122
AT83C5123
AT83EC5123
Pr inted o n rec ycled paper.
Disc laimer. © Atme l Corpora tion 2004 . ATMEL® is a registered trademark of Atmel.
Other t e rm s an d pro duc t n am es m ay be the t radem a r ks o f o t h ers .
Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty
which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors
which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notic e, an d doe s
not ma ke any c ommitm ent to upd ate th e informa tion c ontained herei n. No licen ses to patents or oth er inte llec tual prop erty of Atm el ar e gra nted
by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as criti cal
components in life support devices or systems.
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4372A–SCR–08/04 /0M
