ACT8740
Rev PrB, 25-Feb-08
SYSTEM MANAGEMENT
I2C INTERFACE ELECTRICAL CHARACTERISTICS
(VVSYS = 3.6V, TA = 25°C, unless otherwise specified.)
PARAMETER
SCL, SDA Low Input Voltage
TEST CONDITIONS
MIN
TYP
MAX UNIT
0.4
V
V
SCL, SDA High Input Voltage
1.4
SCL, SDA Leakage Current
1
µA
V
SDA Low Output Voltage
I
OL = 5mA
0.3
SCL Clock Period, tSCL
fSCL clock freq = 400kHz
2.5
100
300
100
100
µs
ns
ns
ns
ns
SDA Data In Setup Time to SCL High, tSU
SDA Data Out Hold Time after SCL Low, tHD
SDA Data Low Setup Time to SCL Low, tST
Start Condition
SDA Data High Hold Time after Clock High, tHP Stop Condition
Figure 1:
I2C Serial Bus Timing
tSCL
SCL
tST
tSU
tSP
SDA IN
tHD
SDA OUT
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