ST8024CDR STMicroelectronics, ST8024CDR Datasheet - Page 24

• Manufacturer Part Number: ST8024CDR
• Description: IC INTERFACE SMARTCARD 28-SOIC
• Manufacturer: STMicroelectronics

Specifications of ST8024CDR

• Applications: Smart Card Reader, Writer
• Voltage - Supply: 2.7 V ~ 6.5 V
• Package / Case: 28-SOIC (7.5mm Width)
• Mounting Type: Surface Mount
• Operating Temperature (min): -25C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 85C
• Package Type: SO
• Rad Hardened: No
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Mounting Style: SMD/SMT
• For Use With: 497-8939 - BOARD EVAL SMART CARD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Interface: -
• Lead Free Status / Rohs Status: Compliant
• Other names: 497-4763-2

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Application
Figure 10. Application diagram
(1) These capacitors must be of the low ESR-type and be placed near the IC (within 100 mm).
(2) ST8024 and the microcontroller must use the same V
(3) Make short, straight connections between CGND, C5 and the ground connection to the capacitor.
(4) Mount one low ESR-type 100 nF capacitor close to pin V
(5) Mount one low ESR-type 100 nF capacitor close to C1 contact.
(6) The connection to C3 should be routed as far from C2, C7, C4 and C8 and, if possible, surrounded by
(7) Optional resistor bridge for changing the threshold of V
+5V
+3.3V
grounded tracks.
connected to ground.
10µF
100nF
100nF
(1)
(1)
R100K
100nF
CLKDIV1
CLKDIV2
5/3V
PGND
C1 +
VDDP
C1 -
VUP
PRES
PRES
I/O
AUX2
AUX1
CGND
(3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
(normally closed type)
CARD READER
ST8024
C5
C6
C7
C8
100nF
100nF
C1
C2
C3
C4
DD
DD
(4)
(5)
supply.
K1
K2
CC
(6)
. If this bridge is not required pin 18 should be
28
27
26
25
24
23
22
21
20
19
18
17
16
15
.
AUX2UC
AUX1UC
I/OUC
XTAL2
XTAL1
OFF
GND
VDD
RSTIN
CMDVCC
PORADJ
VCC
RST
CLK
100nF
15pF
10µF
+3.3V
(7)
+3.3V
Vdd
R1
R2
(2)
MICROCONTROLLER
+3.3 V POWERED