DS1374_10 Datasheet, PDF (4/18 Pages) Maxim Integrated Products – I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output

I²C, 32-Bit Binary Counter Watchdog RTC with
Trickle Charger and Reset Input/Output
AC ELECTRICAL CHARACTERISTICS
(V_CC = V_CC(MIN) to V_CC(MAX), T_A = -40°C to +85°C, unless otherwise noted.) (Note 2) (Figure 1)
PARAMETER
SCL Clock Frequency (Note 17)
Bus Free Time Between STOP
and START Conditions
Hold Time (Repeated) START
Condition (Note 18)
Low Period of SCL Clock
High Period of SCL Clock
Data Hold Time (Notes 19, 20)
Data Setup Time (Note 21)
Start Setup Time
Rise Time of Both SDA and SCL
Signals (Note 17)
Fall Time of Both SDA and SCL
Signals (Note 17)
Setup Time for STOP Condition
Capacitive Load for Each Bus Line
I/O Capacitance (SDA, SCL)
Pulse Width of Spikes That Must
be Suppressed by the Input Filter
Pushbutton Debounce
Reset Active Time
Oscillator Stop Flag (OSF) Delay
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
C_B
C_I/O
t_SP
PB_DB
t_RST
t_OSF
CONDITIONS
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
Standard mode
(Note 17)
(Note 22)
Fast mode
(Figure 2)
(Figure 2)
(Note 23)
MIN TYP
100
0
1.3
4.7
0.6
4.0
1.3
4.7
0.6
4.0
0
0
100
250
0.6
4.7
20 +
0.1C_B
20 +
0.1C_B
0.6
4.7
30
250
250
100
MAX
400
100
UNITS
kHz
μs
μs
μs
μs
0.9
μs
0.9
ns
μs
300
ns
1000
300
ns
300
μs
400
pF
10
pF
ns
ms
ms
ms
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