DS1340 Maxim, DS1340 Datasheet - Page 3

• Manufacturer Part Number: DS1340
• Description: The DS1340 is a real-time clock (RTC)/calendar that is pin compatible and functionally equivalent to the ST M41T00, including the software clock calibration
• Manufacturer: Maxim

DC ELECTRICAL CHARACTERISTICS
(V
AC ELECTRICAL CHARACTERISTICS
(V
V
V
SCL Clock Frequency
Bus Free Time Between STOP
and START Conditions
Hold Time (Repeated) START
Condition (Note 11)
Low Period of SCL Clock
High Period of SCL Clock
Data Hold Time (Notes 12, 13)
Data Setup Time (Note 14)
START Setup Time
Rise Time of SDA and SCL
Signals (Note 15)
Fall Time of SDA and SCL
Signals (Note 15)
Setup Time for STOP Condition
Capacitive Load for Each Bus
Line
I/O Capacitance (SCL, SDA)
Pulse Width of Spikes that Must
be Suppressed by the Input
Filter
Oscillator Stop Flag (OSF) Delay
CC
BACKUP
BACKUP
CC
= 0V, V
= V
CC MIN
Current
Data-Retention Current
PARAMETER
PARAMETER
BACKUP
to V
CC MAX
_______________________________________________________________________________________
= 3.7V, T
, T
A
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
= -40°C to +85°C, unless otherwise noted.) (Notes 1,14, Figure 1)
I
SYMBOL
SYMBOL
BACKUPDR
I
I
I
BACKUP1
BACKUP2
BACKUP3
t
t
t
t
t
HD:STA
HD:DAT
SU:DAT
SU:STO
SU:STA
t
t
f
t
HIGH
C
t
LOW
t
SCL
BUF
C
OSF
t
t
SP
I/O
R
F
B
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
(Note 15)
Fast mode
(Note 16)
OSC ON, FT = 0 (Note 9)
OSC ON, FT = 1 (Note 9)
OSC ON, FT = 0, V
T
OSC OFF
A
I
= +25°C (Notes 9, 10)
2
C RTC with Trickle Charger
CONDITIONS
CONDITIONS
BACKUP
= 3.0V,
20 + 0.1C
20 + 0.1C
20 + 0.1C
20 + 0.1C
MIN
100
250
100
MIN
4.7
1.3
4.0
0.6
4.7
1.3
4.0
0.6
4.7
0.6
4.7
0.6
0
0
0
B
B
B
B
TYP
TYP
25.0
100
800
850
800
10
30
MAX
1000
MAX
1150
1250
1000
100
400
300
300
300
400
100
0.9
0.9
UNITS
UNITS
kHz
ms
pF
pF
nA
nA
μs
μs
μs
μs
μs
ns
μs
ns
ns
μs
ns
3