參數(shù)資料
型號: NCN6001
廠商: ON SEMICONDUCTOR
英文描述: Compact Smart Card Interface IC
中文描述: 緊湊型智能卡接口IC
文件頁數(shù): 22/36頁
文件大?。?/td> 332K
代理商: NCN6001
NCN6001
http://onsemi.com
22
Figure 15. MISO Read Out Sequences
Protocol: Special Mode
Protocol: Standard SPI
DC/DC OPERATION
The power conversion is based on a full bridge structure
capable to handle either step up or step down power supply
(Figure 16). The operation is fully automatic and, beside the
output voltage programming, does not need any further
adjustments.
Figure 16. Basic DC/DC Converter
G_Q4
G_Q2
G_Q7
G_HIZ
G_Q3
G_Q1
CMD_STOP
CMD_5.0V
CMD_3.0V
CMD_1.8V
GND
GND
GND
22 H
L1
GND
11
PWR_GND
10 F
C2
Q2
Q7
Q4
Q6
Q5
Q3
10
12
Q1
10 F
M
V
CC
6
CRD_VCC
C1
13
In order to achieve the 250 s max time to discharge
CRD_VCC to 400 mV called by the EMV specifications, an
active pull down NMOS is provided (Q7) to discharge the
external CRD_VCC reservoir capacitor. This timing is
guaranteed for a 10 F maximum load reservoir capacitor
value (Figure 4).
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