User Manual

DS1852
21 of 25
AC ELECTRICAL CHARACTERISTICS (-40
°
C to +100
°
C, V
CC
= 2.7V to 5.5V)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS NOTES
SCL Clock
Frequency
f
SCL
Fast Mode
Standard Mode
0
0
400
100
kHz 7
Bus Free Time
Between STOP and
START Condition
t
BUF
Fast Mode
Standard Mode
1.3
4.7
µs 7
Hold Time
(Repeated)
START Condition
t
HD:STA
Fast Mode
Standard Mode
0.6
4.0
µs 7, 8
Low Period of SCL
Clock
t
LOW
Fast Mode
Standard Mode
1.3
4.7
µs 7
High Period of SCL
Clock
t
HIGH
Fast Mode
Standard Mode
0.6
4.0
µs 7
Data Hold Time t
HD:DAT
Fast Mode
Standard Mode
0
0
0.9 µs 7, 9, 10
Data Setup Time t
SU:DAT
Fast Mode
Standard Mode
100
250
ns 7
Start Setup Time t
SU:STA
Fast Mode
Standard Mode
0.6
4.7
µs 7
Rise Time of Both
SDA and SCL
Signals
t
R
Fast Mode
Standard Mode
20+0.1C
B
300
1000
ns 11
Fall Time of Both
SDA and SCL
Signals
t
F
Fast Mode
Standard Mode
20+0.1C
B
300
300
ns 11
Setup Time for STOP
Condition
t
SU:STO
Fast Mode
Standard Mode
0.6
4.0
µs
Capacitive Load for
Each Bus Line
C
B
400 pF 11
Startup Time t
ST
2ms 5
V
CC
Power-Up Rate 1 V/s
EEPROM Write
Time
t
W
10 20 ms 6
NONVOLATILE MEMORY CHARACTERISTICS
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS NOTES
Writes +85°C 50,000