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AS3910 Scheda tecnica(PDF) 8 Page - ams AG

Il numero della parte AS3910
Spiegazioni elettronici  13.56 MHz RFID Reader IC, ISO-14443 A/B
PDF  47 Pages
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Produttore elettronici  AMSCO [ams AG]
Homepage  http://www.ams.com
Logo AMSCO - ams AG

AS3910 Scheda tecnica(HTML) 8 Page - ams AG

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www.austriamicrosystems.com/HF_RFID_Reader/AS3910
Revision 2.3
8 - 47
AS3910
Data Sheet - E l e c t r i c a l C h a r a c t e r i s t i c s
6 Electrical Characteristics
Table 3. Operating Conditions
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VDD
Positive supply voltage
In case power supply is lower than
2.6V, PSSR can not be improved
using internal regulators (minimum
regulated voltage is 2.4V)
2.4
3.6
V
VSS
Negative supply voltage
00
V
TAMB
Ambient Temperature
-40
85
ºC
Input pin voltage TRIM pins
30
V
Table 4. DC / AC Characteristics For Digital Inputs and Outputs
Symbol
Parameter
Conditions
Min
Typ
Max
Units
CMOS Inputs
Valid for input pins EN, SEN, SDATAI, SCLK and TEST
VIH
High level input voltage
0.7 * VDD
V
VIL
Low level input voltage
0.3 * VDD
V
ILEAK
Input leakage current
2µA
RPD
Pull-down resistance pad EN
100
k
Ω
CMOS Outputs
Valid for output pins SDATAO, INTR and MCU_CLK
VOH
High level output voltage
ISOURCE = 1mA
0.9 * VDD
V
VOL
Low level output voltage
ISINK = 1mA
0.1 * VDD
V
CL
Capacitive load
50
pF
RO
Output Resistance
250
500
Ω
SPI Timing
TSENL
SPI reset (SEN low)
100
ns
TSCLKL
SCLK low
100
ns
TSCLKH
SCLK high
100
ns
TSENCLKR
SEN rising to SCLK rising
first SCLK pulse
50
ns
TSENCLKF
SCLK falling to SEN falling
last SCLK pulse
50
ns



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