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| U3280M Datasheet, PDF (12/18 Pages) ATMEL Corporation – TRANSPONDER INTERFACE FOR MICROCONTROLLER | |||
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DC Characteristics
Supply voltage VDD = 1.8 V to 6.5 V, VSS = 0 V, Tamb = -40° C to 85° C unless otherwise specified
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Power Supply
Operating voltage at VBatt
Operating voltage at VDD during
battery supply
VDD-limiter voltage during coil
supply
VBatt
VDDB
VDDC
2.0
VBattâ
VSD
2.6
2.9
Operating current during field
supply
VDD > 2.0 V
IFi
40
Sleep current
ISl
EEPROM
Operating current during
erase/write cycle
VDD = 2.0 V
VDD = 6.5 V
IWR
IWR
400
VDD = 2.0 V
IRdp
Operating current during read VDD = 6.5 V
IRdp
cycle
Peak current during 1/4 of read
cycle
Power Management
Field-on detection voltage
Field-off detection voltage
Voltage drop at
power-supply switch
Coil Inputs: Coil 1 and Coil 2
VDD > 1.8 V
VDD > 1.8 V
IS = 0.5 mA,
VBatt = 2 V
VFDon
VFDoff
VSD
2.3
2.5
0.8
Coil input current
Input capacitance
Coil voltage stroke during
modulation
Pin MOD
VCU > 5V
Icoil = 3 to 20 mA
ICI
CIN
VCMS
30
1.8
2.3
Input LOW voltage
VIL
VIH
Input LOW voltage
Input leakage current
Pin NGAP/FC
Output LOW current
Output HIGH current
VDD = 2.0 V
VOL = 0.2 Ã VDD
VDD = 2.0 V
VOH = 0.8 Ã VDD
VIH
0.8 Ã
VDD
IIleakage
10
IOL
0.08
0.2
IOH
-0.06 -0.15
Max.
6.5
3.2
80
0.4
500
1200
300
350
2.9
150
20
4.0
0.2 Ã
VDD
VDD
0.3
-0.25
Unit
V
V
V
µA
µA
µA
µA
µA
µA
V
V
mV
mA
pF
V
V
V
nA
mA
mA
12 U3280M
4688BâRFIDâ12/04
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