Datasheet

DS1848
15 of 17
AC ELECTRICAL CHARACTERISTICS (-40
°
C to +95
°
C, V
CC
= 3.0V to 5.5V)
PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES
SCL clock frequency f
SCL
Fast Mode
Standard Mode
0
0
400
100
kHz 6
Bus free time between
STOP and START
t
BUF
Fast Mode
Standard Mode
1.3
4.7
ms
6
Hold time (repeated)
START condition
t
HD:STA
Fast Mode
Standard Mode
0.6
4.0
ms
7,6
Low period of SCL
clock
t
LOW
Fast Mode
Standard Mode
1.3
4.7
ms
6
High period of SCL
clock
t
HIGH
Fast Mode
Standard Mode
0.6
4.0
ms
6
Data hold time t
HD:DAT
Fast Mode
Standard Mode
0
0
0.9
ms
6,8,9
Data set-up time t
SU:DAT
Fast Mode
Standard Mode
100
250
ns 6
Start set-up time t
SU:STA
Fast Mode
Standard Mode
0.6
4.7
ms
6
Rise time of both SDA
and SCL signals
t
R
Fast Mode
Standard Mode
20+0.1C
B
300
1000
ns 10
Fall time of both SDA
and SCL signals
t
F
Fast Mode
Standard Mode
20+0.1C
B
300
300
ns 10
Set-up time for STOP
condition
t
SU:STO
Fast Mode
Standard Mode
0.6
4.0
ms
Capacitive load for
each bus line
C
B
400 pF 10
EEPROM write time t
W
5 20 ms 11
NONVOLATILE MEMORY CHARACTERISTICS
PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS
Writes 85°C 50,000