DS3231M 데이터 시트보기 (PDF) - Maxim Integrated
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DS3231M Datasheet PDF : 20 Pages
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±5ppm, I2C Real-Time Clock
DC ELECTRICAL CHARACTERISTICS—GENERAL (continued)
(VCC = +2.3V to +5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VCC = +3.3V, VBAT = +3.0V, and TA =
+25NC, unless otherwise noted.)
PARAMETER
Power-Fail Voltage
Logic 0 Output
(32KHZ, INT/SQW, SDA)
SYMBOL
VPF
VOL
IOL = 3mA
CONDITIONS
MIN TYP MAX UNITS
2.45 2.575 2.70
V
0.4
V
Logic 0 Output
(RST)
VOL
IOL = 1mA
0.4
V
Output Leakage
(32KHZ, INT/SQW, SDA)
ILO
-0.1
+0.1
µA
Input Leakage
(SCL)
RST I/O Leakage
VBAT Leakage
Temperature Accuracy
Temperature Conversion Time
Pushbutton Debounce
Reset Active Time
Oscillator Stop Flag (OSF) Delay
ILI
IOL
IBATLKG
TEMPACC
tCONV
PBDB
tRST
tOSF
VCC or VBAT = +3.3V
(Note 2)
-0.1
+0.1
µA
-200
+10
µA
25
100
nA
Q3
NC
10
ms
250
ms
250
ms
125 200
ms
DC ELECTRICAL CHARACTERISTICS—VBAT CURRENT CONSUMPTION
(VCC = 0V, VBAT = +2.3V to +5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VCC = 0V, VBAT = +3.0V,
and TA = +25NC, unless otherwise noted.)
PARAMETER
Active Battery Current
(I2C Active) (Note 3)
Timekeeping Battery Current
(I2C Inactive) (Note 3)
Temperature Conversion Current
(I2C Inactive)
SYMBOL
IBATA
IBATT
IBATTC
CONDITIONS
VBAT = +3.63V
VBAT = VBATMAX
VBAT = +3.63V, EN32KHZ = 0
VBAT = VBATMAX, EN32KHZ = 0
VBAT = +3.63V
VBAT = VBATMAX
MIN TYP MAX UNITS
70
µA
150
2
3.0
µA
2
3.5
575
µA
650
Data Retention Current
(Oscillator Stopped and I2C
Inactive)
IBATDR TA = +25NC
100
nA
AC ELECTRICAL CHARACTERISTICS—POWER SWITCH
(TA = -40NC to +85NC, unless otherwise noted.) (Figure 2)
PARAMETER
VCC Fall Time, VPFMAX to
VPFMIN
VCC Rise Time, VPFMIN to
VPFMAX
Recovery at Power-Up
SYMBOL
tVCCF
tVCCR
tREC
(Note 4)
CONDITIONS
MIN TYP MAX UNITS
300
Fs
0
Fs
250 300
ms
3
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