NCN6804MNR2G ON Semiconductor, NCN6804MNR2G Datasheet - Page 14

• Manufacturer Part Number: NCN6804MNR2G
• Description: IC SMART CARD DUAL W/SPI 32-QFN
• Manufacturer: ON Semiconductor

Specifications of NCN6804MNR2G

• Applications: Smart Card
• Interface: 4-Wire SPI Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Package / Case: 32-TFQFN Exposed Pad
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: NCN6804MNR2G; NCN6804MNR2GOSTR

CRD_VCC
CRD_RST
CRD_CLK
CRD_C4
CRD_C8
CRD_IO
Figure 4. Measured Typical Startup CRD_VCC
CS
Figure 3. Startup CRD_VCC Sequence
Sequence
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ATR
14
upon the current capability of the DC/DC converter
associated with the external inductor L and the reservoir
capacitor connected across CRD_VCCA or B and
GROUND. During this sequence, the average input current
is 300 mA typical (see Figure 4), assuming the system is
fully loaded during the start up.
sequence is under the control and responsibility of the
application software.
depends upon the external reservoir capacitor and the peak
current absorbed by the internal NMOS transistor built
across CRD_VCCA/B and Ground. These behaviors are
depicted Figure 5.
upon the external constraints, the designer must take care of
these limits if the t
not meet his requirements.
At powerup, the CRD_VCCA/B turn−on time depends
Even if enabled by the built−in sequencer the activation
On the other hand, at turn off, the CRD_VCCA/B fall time
Since these parameters have finite values, depending
Figure 5. CRD_VCC Typical Turn−on and Turn−off
ON
or t
OFF
Times
provided by the datasheet does