DS1339A Datasheet, PDF (3/19 Pages) Maxim Integrated Products – Low-Current, I2C, Serial Real-Time Clock

DS1339A
Low-Current, I²C, Serial Real-Time Clock
DC ELECTRICAL CHARACTERISTICS (continued)
(V_CC = MIN to MAX, V_BACKUP = MIN to MAX, T_A = -40NC to +85NC, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
Trickle-Charger Resistor Register
10h = A6h, V_CC = Typ,
R2
V_BACKUP = 0V
Trickle-Charger Resistor Register
10h = A7h, V_CC = Typ,
V_BACKUP = 0V
V_BACKUP Leakage Current
R3
I_BKLKG
-100
TYP
2000
4000
25
MAX
200
UNITS
I
I
nA
DC ELECTRICAL CHARACTERISTICS
(V_CC = 0V, V_BACKUP = MIN to MAX, T_A = -40NC to +85NC, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
V_BACKUP Current EOSC = 0,
SQW Off
I_BKOSC (Note 8)
300 600
nA
V_BACKUP Current EOSC = 0,
SQW On
I_BKSQW (Note 8)
500 1100
nA
V_BACKUP Current EOSC = 1
I_BKDR
10
200
nA
AC ELECTRICAL CHARACTERISTICS
(V_CC = MIN to MAX, T_A = -40NC to +85NC, unless otherwise noted.) (Note 2, Figure 1)
PARAMETER
SYMBOL
CONDITIONS
SCL Clock Frequency
Bus Free Time Between a STOP
and START Condition
f_SCL
t_BUF
Hold Time (Repeated) START
Condition
t_HD:STA (Note 9)
Low Period of SCL Clock
High Period of SCL Clock
Setup Time for a Repeated
START Condition
t_LOW
t_HIGH
t_SU:STA
Data Hold Time
Data Setup Time
Rise Time of Both SDA and SCL
Signals
t_HD:DAT
t_SU:DAT
t_R
(Notes 10, 11)
(Note 12)
(Note 13)
Fall Time of Both SDA and SCL
Signals
t_F
(Note 13)
Setup Time for STOP Condition
t_SU:STO
MIN TYP MAX UNITS
0.03
400
kHz
1.3
Fs
0.6
1.3
0.6
0.6
0
100
20 +
0.1C_B
20 +
0.1C_B
0.6
Fs
Fs
Fs
Fs
0.9
Fs
ns
300
ns
300
ns
Fs
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