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參數(shù)資料
| 型號(hào)： | NCN8024DTBR2G |
| 廠商： | ON Semiconductor |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | SMART CARD IC 5V/3V TSSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 應(yīng)用： | 智能卡讀取器，寫入器 |
| 電源電壓： | 5V |
| 封裝/外殼： | 28-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-TSSOP |
| 包裝： | 帶卷 (TR) |
| 安裝類型： | 表面貼裝 |
NCN8024
http://onsemi.com
3
Figure 3. NCN8024 Block Diagram
23
3
19
18
1
2
24
25
26
28
27
20
22
9
10
5
7
17
4
8
15
16
11
13
12
14
21
6
CLKDIV1
CLKDIV2
GNDP
C2
VDDP
C1
VUP
CRD_I/O
CRD_AUX2
CRD_AUX1
CRD_GND
CMDVCC
AUX2uc
AUX1uc
I/Ouc
CLKIN
GND
VDD
RSTIN
PORADJ
CRD_VCC
CRD_RST
CRD_CLK
INT
5V/3V
CRD_PRES
NC
CRD_PRES
Interrupt Block
Card Detection
DC/DC Converter
Internal Oscillator 2.5 MHz
Supply Voltage
Monitoring
Clock Dividers
Control Logic
and Sequencer
Card Pin
Drivers
Thermal Control
PIN FUNCTION AND DESCRIPTION
Pin #
Name
Type
Description
1
CLKDIV1
Input
This pin coupled with CLKDIV2 is used to program the clock frequency division ratio (Table 1).
2
CLKDIV2
Input
This pin coupled with CLKDIV1 is used to program the clock frequency division ratio (Table 1).
3
5V/3V
Input
Allows selecting card VCC power supply voltage. CRD_VCC = 5 V when 5V/3V = HIGH or 3 V when
5V/3V = LOW
4
GNDP
GND
DC/DC Converter Power Supply Ground
5
C2
Power
DC/DC Converter Capacitor pin number 2 A 100 nF capacitor is connected between this pin and
pin C1. The capacitor has to feature an ESR lower than 100 mW
6
VDDP
Power
DC/DC Converter Power Supply Voltage
7
C1
Power
DC/DC Converter Capacitor pin number 1 A 100 nF capacitor is connected between this pin and
pin C2. The capacitor has to feature an ESR lower than 100 mW
8
VUP
Power
Chargepump output a very low ESR 100 nF capacitor (ESR< 100 mW) is connected between
this pin and GNDP
9
CRD_PRES
Input
Card presence pin active (card present) when CRD_PRES = Low. A builtin debounce timer of
about 8 ms is activated when a card is inserted.
10
CRD_PRES
Input
Card presence pin active (card present) when CRD_PRES = High. A builtin debounce timer of
about 8 ms is activated when a card is inserted.
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