DS1306
DC ELECTRICAL CHARACTERISTICS
(cont鈥檇)
(0擄C to 70擄C or 鈥?0擄C to +85擄C; V
CC
= 2.0 to 5.5V*)
PARAMETER
Battery Timekeeping Current
Battery Timekeeping Current
(IND)
Trickle Charge Resistors
Trickle Charger Diode Voltage
Drop
SYMBOL
I
BATT
V
BAT
=3V
I
BATT
V
BAT
=3V
R1
R2
R3
V
TD
MIN TYP
MAX
550
800
UNITS NOTES
nA
12
nA
12
k鈩?/div>
k鈩?/div>
k鈩?/div>
V
2
4
8
0.7
CAPACITANCE
PARAMETER
Input Capacitance
Output Capacitance
Crystal Capacitance
SYMBOL
C
I
C
O
C
X
CONDITION
TYP
10
15
6
MAX
(t
A
= 25擄C)
UNITS
pF
pF
pF
NOTES
3-WIRE AC ELECTRICAL CHARACTERISTICS
(0擄C to 70擄C or 鈥?0擄C to +85擄C; V
CC
= 2.0V to 5.5V*)
PARAMETER
Data to CLK Setup
CLK to Data Hold
CLK to Data Delay
CLK Low Time
CLK High Time
CLK Frequency
CLK Rise and Fall
CE to CLK Setup
CLK to CE Hold
CE Inactive Time
CE to Output High Z
SCLK to Output High Z
*Unless otherwise noted.
SYMBOL
V
CC
=2.0V
t
DC
V
CC
=5V
V
CC
=2.0V
t
CDH
V
CC
=5V
V
CC
=2.0V
t
CDD
V
CC
=5V
V
CC
=2.0V
t
CL
V
CC
=5V
V
CC
=2.0V
t
CH
V
CC
=5V
V
CC
=2.0V
t
CLK
V
CC
=5V
V
CC
=2.0V
t
R
, t
F
V
CC
=5V
V
CC
=2.0V
t
CC
V
CC
=5V
V
CC
=2.0V
t
CCH
V
CC
=5V
V
CC
=2.0V
t
CWH
V
CC
=5V
V
CC
=2.0V
t
CDZ
V
CC
=5V
V
CC
=2.0V
t
CCZ
V
CC
=5V
MIN TYP
200
50
280
70
MAX
UNITS NOTES
ns
ns
800
200
1000
250
1000
250
DC
0.6
2.0
2000
500
ns
ns
ns
MHz
ns
碌s
ns
碌s
280
70
280
70
ns
ns
6
6
6
5, 6
5, 6
5, 6
5, 6
5, 6, 7
6
6
6
4
1
240
60
4
1
14 of 20
prev
next