N720 OpenLinux
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
43
Figure 3-37 I2C timing
Table 3-11 I2C timing parameters (standard mode)
Timing Parameter
Minimum
Value
Typical
Value
Maximum
Value
Unit
f
SCL
SCL clock frequency
/
/
100
kHz
t
HD;STA
Hold time (repeated) START condition
4.0
/
/
us
t
LOW
LOW period of the SCL pin
4.7
/
/
us
t
HIGH
HIGH period of the SCL pin
4.0
/
5.0
us
t
SU;STA
Set-up time for a repeated START
condition
4.7
/
/
us
t
HD;DAT
Data hold time
0
/
/
us
t
SU;DAT
Data set-up time
250
/
/
ns
t
r
Rise time for SCL and SDA
/
/
1000
ns
t
f
Fall time for SCL and SDA
/
/
300
ns
t
SU;STO
Set-up time for STOP condition
4.0
/
/
us
t
BUF
Bus free time between STOP and START
condition
4.7
/
/
us
t
VD;DAT
Data invalid time
/
/
3.45
us
t
VD;ACK
Data invalid acknowledge time
/
/
3.45
us
