Rainbow Electronics DS1682 - Manual (Page 12)

DS1682
12 of 15
AC ELECTRICAL CHARACTERISTICS (-40
°
C to +85
°
C; V
CC
= 2.5V to 5.5V)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS NOTES
EEPROM Endurance E
E
50k writes 2
EEPROM Write Time t
EW
150 300 ms 1,3,4
EEPROM Transfer to
RAM
t
ER
1 ms 4,5
ALARM Output
Active-Low Pulse
Width t
SL
62.5 ms 4
ALARM Output
Active-High Pulse
Width t
SH
437.5 ms 4
ALARM Input Pulled
Low and Released
Pulse Width t
SPL
500 ms 4
Fast Mode 400
SCL Clock Frequency f
SCL
Standard Mode 100
kHz
Fast Mode 1.3
Bus Free Time
Between a STOP and
START Condition
t
BUF
Standard Mode 4.7
µ s
Fast Mode 0.6 Hold Time (Repeated)
START Condition
t
HD:STA
Standard Mode 4.0
µ s 6
Fast Mode 1.3
LOW Period of SCL t
LOW
Standard Mode 4.7
µ s
Fast Mode 0.6
HIGH Period of SCL t
HIGH
Standard Mode 4.0
µ s
Fast Mode 0.6 Setup Time for a
Repeated START
t
SU:STA Standard Mode 4.7
µ s
Fast Mode 0
Data Hold Time t
HD:DAT
Standard Mode 0
µ s 7, 8
Fast Mode 100
Data Setup Time t
SU:DAT Standard Mode 250
ns 10
Fast Mode 20 + 0.1C
B
300 Rise Time of SDA and
SCL Signals
t
R
Standard Mode 20 + 0.1C
B
1000
ns 9
Fast Mode 20 + 0.1C
B
300 Fall Time of SDA and
SCL Signals
t
F
Standard Mode 20 + 0.1C
B
300
ns 9
Fast Mode 0.6
Setup Time for STOP t
SU:STO
Standard Mode 4.0
µ s
Input Capacitance C
I/O
10 pF 4
Capacitive Load for
Each Bus Line
C
B
400 pF 9