U3280M 查看數據表（PDF） - Atmel Corporation
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U3280M Datasheet PDF : 21 Pages
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U3280M
9. AC Characteristics
Supply voltage VDD = 1.8V to 6.5V, VSS = 0V, Tamb = –40°C to 85°C unless otherwise specified
Parameters
Test Conditions
Pin
Symbol
Min.
Serial Interface Timing
SCL clock frequency
Clock low time
Clock high time
SDA and SCL rise time
SDA and SCL fall time
START condition setup time
START condition hold time
Data input setup time
Data input hold time
STOP condition setup time
Bus free time
Input filter time
Data output hold time
Coil Inputs
fSCL
tLOW
tHIGH
tR
tF
tSUSTA
tHDSTA
tSUDAT
tHDDAT
tSUSTO
tBUF
tI
tDH
0
4.7
4.0
4.7
4.0
250
0
4.7
4.7
300
Coil frequency
Gap Detection
fCOIL
100
Delay field off to GAP = 0
Delay field on to GAP = 1
Power Management
VcoilGap < 0.7 VDC
VcoilGap > 3 VDC
TFGAP0
10
TFGAP1
1
Battery to field switch delay
Field to battery switch delay
EEPROM
VBatt = 6.5V
tBFS
tFBS
5
Endurance
Data erase/write cycle time
Data retention time
Power up to read operation
Power up to write operation
Reset
Erase/write cycles
For 16-bit access
Tamb = 25° C
ED
tDEW
tDR
tPUR
tPUw
500000
10
Power-on reset
NRST
VDDrise = 0 to 2V
VIl < 0.2 VDD
trise
tres
1
Typ.
125
10
9
Max.
Unit
100
kHz
µs
µs
1000
ns
300
ns
µs
µs
ns
ns
µs
µs
100
ns
1000
ns
150
kHz
50
µs
50
µs
1000
µs
30
ms
Cycles
12
ms
years
0.2
ms
0.2
ms
10
ms
µs
17
4688D–RFID–03/07
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