TDA8035HN/C1,157 NXP Semiconductors, TDA8035HN/C1,157 Datasheet - Page 7

• Manufacturer Part Number: TDA8035HN/C1,157
• Description: Interface - Specialized SMART CARD INTERFACE
• Manufacturer: NXP Semiconductors

Specifications of TDA8035HN/C1,157

• Rohs: yes
• Factory Pack Quantity: 2450

NXP Semiconductors
8. Functional description
TDA8035HN
Product data sheet
COMPANY PUBLIC
8.1 Power supply
Remark: The ISO 7816 terminology convention has been adhered to throughout this
document, and it is assumed that the reader is familiar with this convention.
Power supply voltage V
All interface signals with the system controller are referenced to V
contacts remain inactive during powering up or powering down.
Internal regulator V
After powering the device, OFFN remains low until CMDVCCN is set high and PRESN is
low.
During power off, OFFN falls low when V
While the card is not activated, CMDVCCN is kept at high level. To save power
consumption, the frequency of the internal oscillator (f
sequences is put in low frequency mode.
This device includes a DC-to-DC converter to generate the 5 V, 3 V or 1.8 V card supply
voltage (V
DC-to-DC converter operates as a voltage tripler, doubler or follower according to the
respective values of V
Special care has to me made in the selection of the capacitors of the DC/DC converter
specially with respect to capacitor value versus voltage and ESR (see
The operating mode is as follows (see
•
•
•
•
•
•
V
V
V
V
V
V
CC
CC
CC
CC
CC
CC
= 5 V and V
= 5 V and V
= 3 V and V
= 3 V and V
= 1.8 V and V
= 1.8 V and V
CC
). The DC-to-DC converter is separately supplied by V
All information provided in this document is subject to legal disclaimers.
REG
DDP
DDP
DDP
DDP
Rev. 2.1 — 3 December 2012
CC
DDP
DDP
is 1.8 V
DDP
> 3.8 V; voltage doubler
< 3.6 V; voltage tripler
> 3.8 V; voltage follower
< 3.6 V; voltage doubler
and V
> 3.8 V; voltage doubler
< 3.6 V; voltage tripler
is from 2.7 V to 5.5 V
DDP
.
Figure
DDP
is below the threshold voltage falling.
3):
osc(int)
) used for the activation
TDA8035HN
DD(INTF)
DDP
Smart card interface
Table
and G
© NXP B.V. 2012. All rights reserved.
. All card
7)
NDP
. The
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