DS1338_11 Datasheet, PDF (3/16 Pages) Maxim Integrated Products – I2C RTC with 56-Byte NV RAM

DS1338 I²C RTC with 56-Byte NV RAM
DC ELECTRICAL CHARACTERISTICS
(V_CC = 0V, T_A = -40°C to +85°C, unless otherwise noted. Typical values are at V_BAT = 3.0V, T_A = +25°C, unless
otherwise noted.) (Note 1)
PARAMETER
SYMBOL MIN TYP MAX UNITS
V_BAT Current (OSC ON); V_BAT = 3.7V, SQW/OUT OFF (Note 7)
V_BAT Current (OSC ON); V_BAT = 3.7V, SQW/OUT ON (32kHz)
(Note 7)
I_BATOSC1
I_BATOSC2
800 1200 nA
1025 1400 nA
V_BAT Data-Retention Current (Osc Off); V_BAT = 3.7V (Note 7)
I_BATDAT
10 100
nA
AC ELECTRICAL CHARACTERISTICS
(V_CC = V_CC(MIN) to V_CC(MAX), T_A = -40°C to +85°C) (Note 1)
PARAMETER
SYMBOL
CONDITION
SCL Clock Frequency
Fast mode
f_SCL
Standard mode
Bus Free Time Between STOP
and START Condition
t_BUF
Fast mode
Standard mode
Hold Time (Repeated) START
Condition (Note 8)
t_HD:STA
Fast mode
Standard mode
LOW Period of SCL Clock
Fast mode
t_LOW
Standard mode
HIGH Period of SCL Clock
t_HIGH
Fast mode
Standard mode
Setup Time for Repeated
START Condition
t_SU:STA
Fast mode
Standard mode
Data Hold Time (Notes 9, 10)
Data Setup Time (Note 11)
t_HD:DAT
t_SU:DAT
Fast mode
Standard mode
Fast mode
Standard mode
Rise Time of Both SDA and
SCL Signals (Note 12)
Fast mode
t_R
Standard mode
Fall Time of Both SDA and
SCL Signals (Note 12)
Setup Time for STOP
Condition
t_F
t_SU:STO
Fast mode
Standard mode
Fast mode
Standard mode
Capacitive Load for Each Bus
Line
C_B
(Note 12)
I/O Capacitance (SDA, SCL)
C_I/O
(Note 13)
Oscillator Stop Flag (OSF)
Delay
t_OSF
(Note 14)
MIN
100
0
1.3
4.7
0.6
4.0
1.3
4.7
0.6
4.0
0.6
4.7
0
0
100
250
20 + 0.1C_B
20 + 0.1C_B
20 + 0.1C_B
20 + 0.1C_B
0.6
4.0
TYP
100
MAX
400
100
0.9
300
1000
300
300
400
10
UNITS
kHz
µs
µs
µs
µs
µs
µs
ns
ns
ns
µs
pF
pF
ms
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