Philips Semiconductors
Product data sheet
NE1619
HECETA4 Temperature and voltage monitor
2004 Oct 05
9
SMBus INTERFACE AC CHARACTERISTICS
V
DD
= 3.3 V, T
amb
= 0 癈 to +125 癈 unless otherwise specified.
SYMBOL
PARAMETER
CONDITION
MIN.
TYP.
MAX.
UNIT
t
SCL
SCL clock frequency
400
kHz
t
BUF
SMBus free time
4.7
祍
t
LOW
SCL Low time
4.7
祍
t
HIGH
SCL High time
4.0
祍
t
SU:STA
Start set-up time
100
ns
t
HD:STA
Start hold time
100
ns
t
SU:STO
Stop set-up time
4.0
祍
t
SU:DAT
Data set-up time
250
ns
t
HD:DAT
Data hold time
0
ns
t
F
Fall time
1.0
祍
NOTE:
1. These specifications are guaranteed by design and not tested in production.
TIMING DIAGRAM
SL01231
SCL
SDA
t
LOW
t
HIGH
t
HD:STA
t
HD:DAT
t
SU:DAT
t
SU:STA
t
SU:STO
t
BUF
t
F
P
S
P
S
S: Start Condition
P: Stop Condition
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