I2C Ac Electrical Characteristics - Samsung S5PC110 Manual

S5PC110_UM

1.15 I2C AC ELECTRICAL CHARACTERISTICS

IICSCL
IICSDA
(VDDINT, VDDarm = 1.1V±5%, TA = -25 to 85℃, VDDext = 3.3V±10%)
Parameter
SCL clock frequency
SCL high level pulse width
SCL low level pulse width
Bus free time between STOP and START
START hold time
SDA hold time
SDA setup time
STOP setup time
NOTE: std. refers to Standard Mode and fast refers to Fast Mode.
1. The IIC data hold time (tSDAH) is minimum 0ns.
(IIC data hold time is minimum 0ns for standard/ fast bus mode IIC specification v2.1)
Check whether the data hold time of your IIC device is 0 ns or not.
2. The IIC controller supports IIC bus device only (standard/fast bus mode), and does not support C bus device.
tSTOPH tBUF
Figure 1-16 IIC Interface Timing
Table 1-17 IIC BUS Controller Module Signal Timing
Symbol
f
t
SCLHIGH
t
SCLLOW
t
t
STARTS
t
SDAH
t
SDAS
t
STOPH
tSCLHIGH
tSDAS
tSTARTS
Minimum
-
SCL
std. 4.0
fast 0.6
std. 4.7
fast 1.3
std 4.7
BUF
fast 1.3
std. 4.0
fast 0.6
std. 0
fast 0
std. 250
fast 100
std. 4.0
fast 0.6
1 ELECTRICAL DATA
fSCL
tSCLLOW
tSDAH
Typical Maximum
std. 100
-
fast 400
- -
- -
- -
- -
std.-fast
-
0.9
- -
- -
Unit
kHz
us
us
us
us
us
ns
us
1-30