参数资料
| 型号： | NCN8025MTTBG |
| 厂商： | ON Semiconductor |
| 文件页数： | 5/15页 |
| 文件大小： | 0K |
| 描述： | IC SMART CARD I2C 16-QFN |
| 标准包装： | 1 |
| 系列： | * |
| 其它名称： | NCN8025MTTBGOSDKR |
NCN8025 / NCN8025A
http://onsemi.com
13
As illustrated by Figure 8 the device has a debounce timer
of 8 ms typical duration. When a card is inserted, output INT
goes High only at the end of the debounce time. When the
card is removed a deactivation sequence is automatically
and immediately performed and INT goes Low.
ESD PROTECTION
The NCN8025 / NCN8025A includes devices to protect
the pins against the ESD spike voltages. To cope with the
different ESD voltages developed across these pins, the built
in structures have been designed to handle either 2 kV, when
related to the micro controller side, or 8 kV when connected
with the external contacts (HBM model). Practically, the
CRST, CCLK, CI/O, CAUX1, CAUX2, PRES and PRES
pins can sustain 8 kV. The CVCC pin has the same ESD
protection and can source up to 70 mA continuously, the
absolute maximum current being internally limited with a
max at 150 mA. The CVCC current limit depends on VDDP
and CVCC.
APPLICATION SCHEMATIC
3.3 V Microcontroller
VCC
RST
CLK
C4
GND
VPP
I/O
C8
1
2
3
4
5
6
7
8
SMART CARD
R1
R2
VDD
+3.3 V
DET
Normally Open
VDD
+3.3 V
VDDP
+5 V
+
100 nF
XTAL1 XTAL2
100 nF
CAUX2
CI/O
PRES
VDDP
VDD
RSTIN
CLKIN
VSEL0
1
2
3
4
5
6
78
9
10 11 12
17
16
15
14
13
24 23 22 21 20 19
18
Exposed Pad
25
GND
220 nF
100 nF
GND
100 nF
Figure 9. Application Schematic
VSEL1
CLKDIV2
CLKDIV1
AUX2uc
AUX1uc
I/Ouc
CAUX1
GND
CCLK
CRST
CVCC
PORADJ
Optional R1/R2 resistor
divider if not used it is
recommended to connect
PORADJ to Ground
10 mF
INT
PRES
CMDVCC
ORDERING INFORMATION
Device
Package
Shipping
NCN8025AMNTXG
QFN24
(PbFree)
3000 / Tape & Reel
NCN8025MTTBG
QFN16
(PbFree)
3000 / Tape & Reel
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
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| NCN8026A | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Compact Low Power Smart Card Interface IC |
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