DS8023-KIT Maxim Integrated Products, DS8023-KIT Datasheet - Page 16

• Manufacturer Part Number: DS8023-KIT
• Description: EVALUATION KIT FOR DS8023
• Manufacturer: Maxim Integrated Products

Specifications of DS8023-KIT

• Main Purpose: Interface, Smart Card
• Utilized Ic / Part: DS8023
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 90-08023-KIT

Smart Card Interface
Performance can be affected by the layout of the appli-
cation. For example, an additional cross-capacitance of
1pF between card reader contacts C2 (RST) and C3
(CLK) or C2 (RST) and C7 (I/O) can cause contact C2
to be polluted with high-frequency noise from C3 (or
C7). In this case, include a 100pF capacitor between
contacts C2 and CGND.
Application recommendations include the following:
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2008 Maxim Integrated Products
EMVCo approval of the interface module (IFM) contained in this Terminal shall mean only that the IFM has been tested in accordance and for sufficient
conformance with the EMV Specifications, Version 3.1.1, as of the date of testing. EMVCo approval is not in any way an endorsement or warranty regarding
the completeness of the approval process or the functionality, quality or performance of any particular product or service. EMVCo does not warrant any
products or services provided by third parties, including, but not limited to, the producer or provider of the IFM and EMVCo approval does not under any
circumstances include or imply any product warranties from EMVCo, including, without limitation, any implied warranties of merchantability, fitness for pur-
pose, or noninfringement, all of which are expressly disclaimed by EMVCo. All rights and remedies regarding products and services which have received
EMVCo approval shall be provided by the party providing such products or services, and not by EMVCo and EMVCo accepts no liability whatsoever in
connection therewith.
• Ensure there is ample ground area around the
• The DS8023 and the host microcontroller must use
• Trace C3 (CLK) should be placed as far as possi-
• The trace connecting CGND to C5 (GND) should
• Avoid ground loops among CGND, PGND, and
• Decouple V
DS8023 and the connector; place the DS8023
very near to the connector; decouple the V
V
tioned under the connector.
the same V
RSTIN, PRES, AUX1IN, I/OIN, AUX2IN, 5V/3V,
CMDVCC, and OFF are referenced to V
XTAL1 is to be driven by an external clock, also
reference this pin to V
ble from the other traces.
be straight (the two capacitors on C1 (V
be connected to this ground trace).
GND.
supplies are the same in the application, they
should be connected in a star on the main trace.
DDA
lines separately. These lines are best posi-
Applications Information
DD
DDA
supply. Pins CLKDIV1, CLKDIV2,
and V
DD
DD
.
separately; if the two
CC
DD
) should
DD
; if pin
and
Maxim is a registered trademark of Maxim Integrated Products, Inc.
With all these layout precautions, noise should be kept
to an acceptable level and jitter on C3 (CLK) should be
less than 100ps.
For technical support, go to
ic.com/micro.
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages.
Note: Contact the factory for availability of other variants and
package options.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
DS8023-RJX+
DS8023-RRX+
PACKAGE TYPE
• Connect a 100nF capacitor (ESR < 100mΩ)
• Connect a 100nF or 220nF capacitor (220nF pre-
28 SO (300 mils)
PART
between V
DS8023’s V
ferred, ESR < 100mΩ) between V
and place near the smart card socket’s C1 contact.
28 TSSOP
SUPPORTED (V)
CC
CC
VOLTAGES
1.8, 3.0, 5.0
1.8, 3.0, 5.0
CURRENT
PACKAGE CODE
pin.
and CGND and place near the
Package Information
Technical Support
—
—
https://support.maxim-
Selector Guide
SUPPORTS
MODE?
STOP
Yes
Yes
DOCUMENT NO.
CC
21-0042
21-0066
and CGND
PIN-
PACKAGE
28 TSSOP
28 SO