U3280M_07 Datasheet, PDF (17/21 Pages) ATMEL Corporation – Transponder Interface for Microcontroller

U3280M
9. AC Characteristics
Supply voltage V_DD = 1.8V to 6.5V, V_SS = 0V, T_amb = –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
f_SCL
t_LOW
t_HIGH
t_R
t_F
t_SUSTA
t_HDSTA
t_SUDAT
t_HDDAT
t_SUSTO
t_BUF
t_I
t_DH
0
4.7
4.0
4.7
4.0
250
0
4.7
4.7
300
Coil frequency
Gap Detection
f_COIL
100
Delay field off to GAP = 0
Delay field on to GAP = 1
Power Management
V_coilGap < 0.7 V_DC
V_coilGap > 3 V_DC
T_FGAP0
10
T_FGAP1
1
Battery to field switch delay
Field to battery switch delay
EEPROM
V_Batt = 6.5V
t_BFS
t_FBS
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
T_amb = 25° C
E_D
t_DEW
t_DR
t_PUR
t_PUw
500000
10
Power-on reset
NRST
V_DDrise = 0 to 2V
VIl < 0.2 V_DD
t_rise
t_res
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