Data Sheet
FS6377-01/FS6377-01g Programmable 3-PLL Clock Generator IC
Table 14. Serial Interface Timing Specifications
Standard Mode
Parameter
Symbol
Conditions/Description
Units
Min.
0
Max.
100
SCL
f
Clock Frequency
SCL
kHz
µs
µs
µs
ns
BUF
t
Bus Free Time Between STOP and START
Set-up Time, START (repeated)
Hold Time, START
4.7
4.7
4.0
250
0
su:STA
t
nd:STA
t
su:DAT
t
Set-up Time, Data Input
Hold Time, Data Input
SDA
SDA
µs
hd:DAT
t
Minimum delay to bridge undefined region of the falling edge of
SCL to avoid unintended START or STOP
AA
t
Output Data Valid From Clock
3.5
µs
R
t
Rise Time, Data and Clock
Fall Time, Data and Clock
High Time, Clock
SDA, SCL
SDA, SCL
SCL
1000
300
ns
ns
µs
µs
µs
F
t
HI
t
4.0
4.7
4.0
LO
t
Low Time, Clock
SCL
su:STO
t
Set-up Time, STOP
Unless otherwise stated, all power supplies = 3.3V ± 5%, no load on any output, and ambient temperature range TA = 0°C to 70°C. Parameters denoted with an asterisk ( * ) represent
nominal characterization data and are not currently production tested to any specific limits. Min. and Max. characterization data are ± 3σ from typical.
SCL
thd:STA
tsu:STA
tsu:STO
SDA
ADDRESS OR
DATA VALID
DATA CAN
CHANGE
START
STOP
Figure 11: Bus Timing Data
tHI
tR
tF
tLO
SCL
tsu:STA
thd:STA
tsu:STO
tsu:DAT
thd:DAT
SDA
IN
tBUF
tAA
tAA
SDA
OUT
Figure 12: Data Transfer Sequence
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