Datasheet

DS3232M
±5ppm, I
2
C Real-Time Clock with SRAM
3Maxim Integrated
DC ELECTRICAL CHARACTERISTICS—GENERAL (continued)
(V
CC
= +2.3V to +4.5V, T
A
= -40NC to +85NC, unless otherwise noted. Typical values are at V
CC
= +3.3V, V
BAT
= +3.0V, and
T
A
= +25NC, unless otherwise noted.) (Note 2)
DC ELECTRICAL CHARACTERISTICS—V
BAT
CURRENT CONSUMPTION
(V
CC
= 0V, V
BAT
= +2.3V to +4.5V, T
A
= -40NC to +85NC, unless otherwise noted. Typical values are at V
CC
= 0V, V
BAT
= +3.0V, and
T
A
= +25NC, unless otherwise noted.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Temperature Conversion Current
(I
2
C Inactive)
I
CCSCONV 200 350 µA
Power-Fail Voltage V
PF 2.45 2.575 2.70 V
Logic 0 Output
(32KHZ, INT/SQW, SDA)
V
OL IOL = 3mA 0.4 V
Logic 0 Output (RST) V
OL IOL = 1mA 0.4 V
Logic 1 Output (32KHZ) V
OH
Active supply > 3.3V, IOH = -1mA 2.0
VActive supply > 2.7V, I
OH = -0.75mA 2.0
Active supply > 2.3V, I
OH = -0.14mA 2.0
Output Leakage
(32KHZ, INT/SQW, SDA)
I
LO -0.1 +0.1 µA
Input Leakage (SCL) I
LI -0.1 +0.1 µA
RST I/O Leakage I
OL -200 +10 µA
V
BAT Leakage IBATLKG TA = +25NC -100 25 +100 nA
Temperature Accuracy TEMP
ACC VCC or VBAT = +3.3V Q3 NC
Temperature Conversion Time t
CONV 10 ms
Pushbutton Debounce PB
DB 250 ms
Reset Active Time t
RST 250 ms
Oscillator Stop Flag (OSF) Delay t
OSF (Note 5) 25 100 ms
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Active Battery Current
(I
2
C Active)
I
BATA (Note 3) 25 75 µA
Timekeeping Battery Current
(I
2
C Inactive)
I
BATT EN32KHZ = 0, INTCN = 1 (Note 3) 1.8 3.0 µA
Temperature Conversion Current
(I
2
C Inactive)
I
BATTC 200 350 µA
Data Retention Current
(Oscillator Stopped and I
2
C
Inactive)
IBATDR TA = +25NC 100 nA