ACT5880
Rev 2, 03-Sep-13
I2C INTERFACE ELECTRICAL CHARACTERISTICS
(VVSYS = 3.6V, TA = 25°C, unless otherwise specified.)
PARAMETER
SCL, SDA Input Low
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
VVSYS = 3.1V to 5.5V, TA = -40ºC to 85ºC
0.4
SCL, SDA Input High
SCL, SDA Leakage Current
SDA Output Low
V
VSYS = 3.1V to 5.5V, TA = -40ºC to 85ºC
1.4
V
1
µA
V
I
OL = 5mA
0.3
SCL Clock Period, tSCL
SDA Data Setup Time, tSU
SDA Data Hold Time, tHD
Start Setup Time, tST
Stop Setup Time, tSP
1.5
100
300
100
100
µs
ns
ns
ns
ns
For Start Condition
For Stop Condition
Figure 1:
I2C Compatible Serial Bus Timing
tSCL
SCL
tST
tHD
tSU
tSP
SDA
Start
condition
Stop
condition
Note:
Each session of data transfer is with a start condition, a 7-bits slave address plus a bit to instruct for read or write, fol-
lowed by an acknowledge bit, a register address byte followed by an acknowledge bit, and a data byte followed by an
acknowledge bit and a stop condition. The device address, the register address and the data are all MSB first transferred.
Each bit volume is prepared during the SCL is low, is latched-in by the rising edge of the SCL. The data byte is accepted
and is put effective by the time that the last bit volume is latched-in.
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