32-bit ARM Cortex™-M3 MCU
HT32F1251/51B/52/53
I2C Characteristics
Table 18. I2C Characteristics
Symbol
fSCL
Parameter
SCL clock frequency
SCL clock high time
Conditions
Min
—
Typ
—
—
—
—
—
—
—
—
—
—
Max
400
—
Unit
kHz
ns
—
—
—
—
—
—
—
—
—
—
tSCL(H)
tSCL(L)
tFALL
600
1300
—
SCL clock low time
—
ns
SCL and SDA fall time
SCL and SDA rise time
START condition setup time
START condition hold time
SDA data setup time
SDA data hold time
300
300
—
ns
tRISE
—
ns
tSU(STA)
tH(STA)
tSU(SDA)
tH(SDA)
tSU(STO)
600
600
100
0
ns
—
ns
—
ns
—
ns
STOP condition setup time
600
—
ns
tFALL
tRISE
SCL
SDA
tSCL(L)
tSCL(H)
tH(SDA)
tH(STA)
tSU(SDA)
tSU(STO)
tSU(STA)
Figure 6. I2C Timing Diagram
Rev. 1.00
30 of 35
May 27, 2011
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
