DS1343 Maxim, DS1343 Datasheet - Page 3

• Manufacturer Part Number: DS1343
• Description: The DS1343/DS1344 low-current real-time clocks (RTCs) are timekeeping devices that provide an extremely low standby current, permitting longer life from a backup supply source
• Manufacturer: Maxim

DC_ELECTRICAL_CHARACTERISTICS_(continued)
(V
AC_ELECTRICAL_CHARACTERISTICS
(V
Backup Current
(Note 7)
Input Leakage (CE, SERMODE,
SCLK, SDI)
Output Leakage
(INT0, INT1, PF, SDO)
Output Logic 1 (PF, SDO)
Output Logic 0, V
(INT0, INT1, PF, SDO)
Power-Fail Trip Point
Switchover Voltage
Trickle-Charger Resistors
SCLK Frequency
Data to SCLK Setup
SCLK to Data Hold
SCLK to Data Delay
SCLK Low Time
SCLK High Time
SCLK Rise and Fall
CE to SCLK Setup
SCLK to CE Hold
CE Inactive Time
CE to Output High-Z
Oscillator Stop Flag (OSF) Delay
CC
CC
= V
= V
CC(MIN)
CC(MIN)
PARAMETER
PARAMETER
to +5.5V, V
to V
OL
DS1343
DS1344
CC(MAX)
= 0.4V
BAT
, T
A
= +1.3V to +5.5V, T
= -40°C to +85°C, unless otherwise noted.) (Notes 2, 3)
SYMBOL
SYMBOL
I
f
t
t
t
t
BAT2
V
t
t
t
SCLK
I
V
CWH
CDH
CDD
CCH
I
t
t
R,
t
CDZ
OSF
R1
R2
R3
t
OH
I
OL
DC
CH
CC
SW
CL
I
O
PF
I
t
F
V
V
V
V
V
CE = V
-3 or -33: V
V
V
-18
-3
-33
V
V
-3 or -33
-18
-18
-3 or -33
-18
-3 or -33
-18
-3 or -33
-18
-3 or -33
(Note 9)
BAT
BAT
BAT
BAT
IN
CC
BAT
BAT
BAT
Low-Current SPI/3-Wire RTCs
A
= 0V to V
R V
= 3V
= V
= 3V
= V
R 1.3V R V
> V
< V
= -40°C to +85°C, unless otherwise noted.) (Notes 2, 3)
IL
CC(MIN)
, no alarms
BAT(MAX)
BAT(MAX)
PF
PF
OH
CC
CONDITIONS
CONDITIONS
= 2.4V
CC
+ 0.2V (Note 8)
1.51
2.45
2.70
MIN
MIN
-0.1
-0.1
250
400
110
400
110
400
100
500
400
3.0
DC
DC
30
30
-1
V
BAT
TYP
2.88
TYP
300
400
V
1.6
2.6
25
1
2
4
PF
> V
CC
MAX
MAX
+0.1
+0.1
1.71
2.70
600
700
160
200
100
3.0
80
40
4
1
UNITS
UNITS
MHz
mA
mA
nA
FA
FA
FA
kI
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
V
3