DS1340U Datasheet, PDF (3/16 Pages) Maxim Integrated Products – I2C RTC with Trickle Charger

DS1340
I²C RTC with Trickle Charger
DC ELECTRICAL CHARACTERISTICS
(V_CC = 0V, V_BACKUP = 3.7V, T_A = -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
V_BACKUP Current
V_BACKUP Data-Retention Current
SYMBOL
CONDITIONS
I_BACKUP1 OSC ON, FT = 0 (Note 9)
I_BACKUP2 OSC ON, FT = 1 (Note 9)
I_BACKUP3
OSC ON, FT = 0, V_BACKUP = 3.0V,
T_A = +25°C (Notes 9, 10)
I_BACKUPDR OSC OFF
MIN TYP MAX UNITS
800 1150
850 1250
nA
800 1000
25.0 100
nA
AC ELECTRICAL CHARACTERISTICS
(V_CC = V_{CC MIN} to V_{CC MAX}, T_A = -40°C to +85°C, unless otherwise noted.) (Notes 1,14, Figure 1)
PARAMETER
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
SYMBOL
f_SCL
t_BUF
t_HD:STA
t_LOW
t_HIGH
t_HD:DAT
t_SU:DAT
t_SU:STA
t_R
t_F
t_SU:STO
CONDITIONS
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
MIN TYP
0
100
4.7
1.3
4.0
0.6
4.7
1.3
4.0
0.6
0
0
250
100
4.7
0.6
20 + 0.1C_B
20 + 0.1C_B
20 + 0.1C_B
20 + 0.1C_B
4.7
0.6
Capacitive Load for Each Bus
Line
C_B
(Note 15)
I/O Capacitance (SCL, SDA)
C_I/O
10
Pulse Width of Spikes that Must
be Suppressed by the Input
t_SP
Fast mode
30
Filter
Oscillator Stop Flag (OSF) Delay
t_OSF (Note 16)
100
MAX
100
400
UNITS
kHz
μs
μs
μs
μs
0.9
μs
0.9
ns
μs
1000
ns
300
300
ns
300
μs
400
pF
pF
ns
ms
Maxim Integrated
3