Rainbow Electronics DS1621 - Manual (Page 14)

DS1621
14 of 16 102299
AC ELECTRICAL CHARACTERISTICS (-55°C to +125°C; V
DD
=2.7V to 5.5V)
PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES
Temperature
Conversion Time T
TC
0.4 1 s
NV Write Cycle
Time t
WR
0°C to 70°C 10 50 ms 10
SCL Clock
Frequency f
SCL
Fast Mode
Standard Mode
0
0 400
100 KHz
Bus Free Time
Between a STOP
and START
Condition t
BUF
Fast Mode
Standard Mode
1.3
4.7 µs
Hold Time
(Repeated) START
Condition t
HD:STA
Fast Mode
Standard Mode
0.6
4.0 µs 5
Low Period of SCL
Clock T
LOW
Fast Mode
Standard Mode
1.3
4.7 µs
High Period of SCL
Clock T
HIGH
Fast Mode
Standard Mode
0.6
4.0 µs
Setup Time for a
Repeated START
Condition t
SU:STA
Fast Mode
Standard Mode
0.6
4.7 µs
Data Hold Time t
HD:DAT
Fast Mode
Standard Mode
0
0 0.9 µs 6, 7
Data Setup Time t
SU:DAT
Fast Mode
Standard Mode
100
250 ns 8
Rise Time of Both
SDA and SCL
Signals t
R
Fast Mode
Standard Mode
20+0.1C
B
300
1000
ns 9
Fall Time of both
SDA and SCL
Signals t
F
Fast Mode
Standard Mode
20+0.1C
B
300
300 ns 9
Setup time for
STOP Condition t
SU:STO
Fast Mode
Standard Mode
0.6
4.0 µs
Capacitative Load
for each Bus Line C
b
400 pF
All values referred to V
IH
=0.9 V
DD
and V
IL
=0.1 V
DD
.
AC ELECTRICAL CHARACTERISTICS (-55°C to +125°C; VDD=2.7V to 5.5V)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Capacitance C
I
5 pF