参数资料
型号: NCN6000DTB
厂商: ON Semiconductor
文件页数: 21/36页
文件大小: 0K
描述: IC SMART CARD COMPACT 20-TSSOP
产品变化通告: Product Obsolescence 01/Jul/2009
标准包装: 75
应用: ATM 终端,气泵,ISM
接口: 微控制器
电源电压: 2.7 V ~ 6 V
封装/外壳: 20-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 20-TSSOP
包装: 管件
安装类型: 表面贴装
NCN6000
http://onsemi.com
28
Figure 28. Command Resume Clock Normal Operation
The CRD_CLK signal is resumed in the normal operation,
following the Chip Select positive going transition. The
previous halted state is irrelevant and the clock signal is
synchronized with the internal clock divider to avoid non
CRD_CLK 50% duty cycle.
PGM
= Low
A0 = Low
RESET = High
A1 = Low
I/O
= Low
CS = Low, pulsed
CRD_CLK
C3 Fall
8.255 ns
Cp = 30 pF
CRD_CLK
C3 Rise
7.900 ns
Cp = 30 pF
Figure 29. Card Clock Rise and Fall Time
Since the CRD_CLK signal can generate very fast
transient (i.e. tr = 2.5 ns @ Cp = 10 pF), adapting the design
to cope with the EMV noise specification might be
necessary at final check out. Using an external RC network
is a way to reduce the dv/dt, hence the EMI noise.
Typically, the external series resistor is 10
W, the total
capacitance being 30 pF to 50 pF
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