DS1621
AC ELECTRICAL CHARACTERISTICS
(-55°C to +125°C; VDD=2.7V to 5.5V)
PARAMETER
Temperature
Conversion Time
NV Write Cycle
Time
SCL Clock
Frequency
Bus Free Time
Between a STOP
and START
SYMBOL CONDITION
MIN
TYP MAX UNITS NOTES
TTC
0.4
1
s
tWR
fSCL
tBUF
0°C to 70°C
10
50
ms
10
Fast Mode
Standard Mode
Fast Mode
0
0
1.3
4.7
400
100
KHz
µs
Standard Mode
Condition
Hold Time
(Repeated) START
Condition
tHD:STA
Fast Mode
Standard Mode
0.6
4.0
µs
5
Low Period of SCL
Clock
High Period of SCL
Clock
Setup Time for a
Repeated START
Condition
TLOW
THIGH
tSU:STA
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
1.3
4.7
0.6
4.0
0.6
4.7
µs
µs
µs
Standard Mode
Data Hold Time
tHD:DAT
tSU:DAT
tR
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
0
0
100
0.9
µs
ns
ns
6, 7
8
Data Setup Time
250
Rise Time of Both
SDA and SCL
Signals
20+0.1CB
300
1000
9
Fall Time of both
SDA and SCL
Signals
tF
Fast Mode
Standard Mode
20+0.1CB
300
300
ns
9
Setup time for
STOP Condition
Capacitative Load
for each Bus Line
tSU:STO
Cb
Fast Mode
Standard Mode
0.6
4.0
µs
pF
400
All values referred to VIH=0.9 VDD and VIL=0.1 VDD.
AC ELECTRICAL CHARACTERISTICS
(-55°C to +125°C; VDD=2.7V to 5.5V)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Input Capacitance
CI
5
pF
14 of 16
102299
DALLAS [ DALLAS SEMICONDUCTOR ]
