TDA8034HN Philips Semiconductors, TDA8034HN Datasheet - Page 5

• Manufacturer Part Number: TDA8034HN
• Description: Smart Card Interface
• Manufacturer: Philips Semiconductors

NXP Semiconductors
Table 3.
[1]
[2]
[3]
[4]
8. Functional description
TDA8034HN_1
Product data sheet
Symbol
V
V
PORADJ
OFFN
I/OUC
AUX1UC
AUX2UC
XTAL1
XTAL2
DDP
DD
I = input, O = output, I/O = input/output, G = ground and P = power supply.
If pin PRESN is HIGH, the card is considered to be present. During card insertion, debouncing can occur on these signals. To counter
this, the TDA8034HN has a built-in debouncing timer (typically 8 ms).
Uses an internal 11 k pull-up resistor connected to pin V
Uses an internal 20 k pull-up resistor connected to pin V
Pin description
Pin Supply
16
17
18
19
20
21
22
23
24
8.1 Power supplies
V
V
V
V
V
V
V
V
V
DDP
DD
DD(INTF)
DD(INTF)
DD(INTF)
DD(INTF)
DD(INTF)
DD
DD
Remark: Throughout this document the ISO 7816 terminology conventions have been
adhered to and it is assumed that the reader is familiar with these.
The power supply voltage ranges are as follows:
All interface signals to the system controller are referenced to V
remain inactive during power up or power down. After powering up the device, pin OFFN
remains LOW until pin CMDVCCN is set HIGH and pin PRESN is LOW. During power
down, pin OFFN goes LOW when V
The internal oscillator frequency (f
When the card is not activated (pin CMDVCCN is HIGH), the internal oscillator is in low
frequency mode to reduce power consumption.
This device has a Low Drop-Off (LDO) voltage regulator connected to pin V
used instead of a DC-to-DC converter. It ensures a minimum V
power supply voltage on pin V
HIGH, for a maximum load current of 65 mA.
•
•
•
…continued
V
V
(V
V
Type
P
P
I
O
I/O
I/O
I/O
I
O
DDP
DDP
DD
CC
: 2.7 V to 3.6 V
[1]
: 4.85 V to 5.5 V when VCC_SEL2 is HIGH (V
: 3 V to 5.5 V when VCC_SEL2 is LOW (V
= 1.8 V)
Description
low-dropout regulator input supply voltage
digital supply voltage
power-on reset threshold adjustment input using an optional external resistor bridge
NMOS interrupt to microcontroller
microcontroller input/output data line
auxiliary microcontroller input/output data line
auxiliary microcontroller input/output data line
crystal connection input
crystal connection output
Rev. 01 — 5 February 2010
CC
DD
.
.
DDP
osc(int)
does not fall below 4.85 V when pin VCC_SEL2 is
DDP
) is only used during the activation sequences.
falls below the falling threshold voltage (V
[4]
; active LOW; see
[3]
CC
[3]
[3]
= 3 V) or when VCC_SEL1 is LOW
CC
= 5 V)
Section 8.10 on page 11
CC
DD(INTF)
TDA8034HN
of 4.75 V and that the
www.DataSheet4U.com
Smart card interface
. All card contacts
© NXP B.V. 2010. All rights reserved.
CC
, and is
th
).
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