tda8035hn NXP Semiconductors, tda8035hn Datasheet - Page 13

• Manufacturer Part Number: tda8035hn
• Description: Smart Card Interface
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDA8035HN
Product data sheet
8.7 Activation sequence
The following sequence then occurs with crystal oscillator (see
T = 64 × Toscint(freq high)
1. CMDVCCN is pulled Low (t0)
2. Crystal oscillator start up time (t0).
3. The internal oscillator changes to its high frequency & DC/DC starts (t1 = t0 + 768 ×
4. V
5. I/O, AUX1 and AUX2 are enabled (t
6. CLK is applied to the C3 contact (t
7. RST is enabled (t
Fig 8.
CMDVCCN
Tosc_Low)
(t
moment)
2
CC
= t
Oscint
Xtal1
rises from 0 to selected Vcc value ( 5 V, 3 V, 1.8 V ) with a controlled slope
VCC
VUP
CLK
RST
1
Activation sequence at t3
IO
+ 3T/2)
All information provided in this document is subject to legal disclaimers.
t0
low frequency
≈ 3 ms
5
= t
Rev. 1.0 — 19 April 2011
1
+ 13T).
t1
4
t2
3
= t
= t
3
1
+ x) with 200 ns < x < 10 x 1/fXtal
+ 10T) (They were pulled LOW until this
t3
t4
high frequency
Figure
TDA8035HN
Smart card interface
8):
© NXP B.V. 2011. All rights reserved.
t5
001aan752
T / 2
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