NCN8024DWR2G ON Semiconductor, NCN8024DWR2G Datasheet - Page 4

• Manufacturer Part Number: NCN8024DWR2G
• Description: IC SMART CARD IC2 8SOIC
• Manufacturer: ON Semiconductor

Specifications of NCN8024DWR2G

• Applications: Smart Card Reader, Writer
• Voltage - Supply: 5V
• Package / Case: 28-SOIC (0.300", 7.50mm Width)
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Interface: -

PIN FUNCTION AND DESCRIPTION
Pin #
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
CRD_AUX2
CRD_AUX1
CRD_GND
CRD_VCC
CRD_CLK
CRD_RST
CMDVCC
CRD_I/O
PORADJ
AUX1uc
AUX2uc
RSTIN
CLKIN
Name
I/Ouc
GND
VDD
INT
NC
Output
Output
Output
Output
Output
Output
Output
Output
Output
Power
Power
Input/
Input/
Input/
Input/
Input/
Input/
Type
GND
Input
Input
Input
GND
Input
This pin handles the connection to the serial I/O (C7) of the card connector. A bi−directional level
translator adapts the serial I/O signal between the card and the micro controller. An 11 kW (typical)
pullup resistor to CRD_V
This pin handles the connection to the chip card’s serial auxiliary AUX2 I/O pin (C8). A bi−directional
level translator adapts the serial I/O signal between the card and the micro controller. An 11 kW
(typical) pullup resistor to CRD_V
This pin handles the connection to the chip card’s serial auxiliary AUX1 I/O pin (C4). A bi−directional
level translator adapts the serial I/O signal between the card and the micro controller. An 11 kW
(typical) pullup resistor to CRD_V
Card Ground
This pin is connected to the CLOCK card connector’s pin (Chip card’s pin C3). The Clock signal
comes from the CLKIN input through clock dividers and level shifter.
This pin is connected to the chip card’s RESET pin (C2) through the card connector. A level
translator adapts the external Reset (RSTIN) signal to the smart card.
This pin is connected to the smart card power supply pin. An internal DC/DC converter is
programmable using the pin 5V/3V to supply either 5 V or 3 V output voltage. An external distributed
ceramic capacitor (200 nF + 330 nF typical recommended) must be connected across CRD_V
and CRD_GND. This set of capacitor (if distributed) must be low ESR (< 100 mW).
Power−on reset threshold adjustment input pin for changing the reset threshold with an external
resistor power divider. Recommended to be connected to ground when unused.
Command VCC pin. Activation sequence Enable/Disable pin (active Low). The activation sequence is
enabled by toggling CMDVCC High to Low and when a card is present.
This Reset input connected to the host and referred to V
the smart card Reset pin through the internal level shifter which translates the level according to the
CRD_V
This pin is connected to the system controller power supply. It configures the level shifter input
stage to accept the signals coming from the controller. A 0.1 mF capacitor shall be used to bypass
the power supply voltage. When V
Ground
The interrupt request is activated LOW on this pin. This is enabled when a card is present and the
card presence is detected by CRD_PRES or CRD_PRES pins. Similarly an interrupt is generated
when CRD_V
Clock Input for External Clock
Unconnected
This pin is connected to an external micro−controller. A bi−directional level translator adapts the
serial I/O signal between the smart card and the external controller. A built−in constant 11 kW
(typical) resistor provides a high impedance state.
This pin is connected to an external micro−controller. A bi−directional level translator adapts the
serial C4 signal between the smart card and the external controller. A built−in constant 11 kW
(typical) resistor provides a high impedance state.
This pin is connected to an external micro−controller. A bi−directional level translator adapts the
serial C8 signal between the smart card and the external controller. A built−in constant 11 kW
(typical) resistor provides a high impedance state.
CC
programmed value.
CC
is overloaded. 20 kW typical integrated pullup resistor to V
http://onsemi.com
CC
provides a High impedance state for the smart card I/O link.
4
CC
CC
DD
provides a High impedance state for the smart card C8 pin.
provides a High impedance state for the smart card C4 pin.
is below 2.35 V typical the card pins are disabled.
Description
DD
(microcontroller side), is connected to
DD
.
CC