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AB18X5-RTC 数据表(PDF) 11 Page - Abracon Corporation

部件名 AB18X5-RTC
功能描述  Baseline timekeeping features
PDF  37 Pages
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制造商  ABRACON [Abracon Corporation]
网页  https://abracon.com
标志 ABRACON - Abracon Corporation

AB18X5-RTC 数据表(HTML) 11 Page - Abracon Corporation

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AB18X5 Real-Time Clock with Power
Management Family
Date of Issue: October 16, 2014
3.0 x 3.0 mm
Page 11 of 37
Abracon Drawing #453568
Revision: C
5.2 Power Supply Parameters
Figure 3 and Table 5 describe the power supply and switchover parameters. See Power Control and
Switching for a detailed description of the operations.
Figure 3. Power Supply Switchover
For Table 5, T
A = -40 °C to 85 °C, TYP values at 25 °C.
Table 5: Power Supply and Switchover Parameters
SYMBO
L
PARAMETER
PWR
TYPE
POWER STATE
TEST
CONDITIONS
MIN
TYP
MAX
UNIT
VCC
System Power Voltage
VCC
Static
VCC Power
Clocks
operating
and RAM and
registers retained
1.5
3.6
V
VCCIO
VCC I/O Interface
Voltage
VCC
Static
VCC Power
I2C or SPI opera-
tion
1.5
3.6
V
VCCST
VCC Start-up Voltage(1)
VCC
Rising
POR -> VCC Power
1.6
V
VCCRST
VCC Reset Voltage
VCC
Falling VCC Power -> POR
VBAT < VBAT,MIN or
no VBAT
1.3
1.5
V
VCCSWR
VCC Rising Switch-over
Threshold Voltage
VCC
Rising
VBAT Power ->
VCC Power
VBAT ≥ VBATRST
1.6
1.7
V
VCCSWF
VCC Falling Switch-over
Threshold Voltage
VCC
Falling
VCC Power ->
VBAT Power
VBAT ≥ VBATSW,MIN
1.2
1.5
V
VCCSWH
VCC Switchover Thresh-
old Hysteresis(2)
VCC
Hyst.
VCC Power <->
VBAT Power
70
mV
VCCFS
VCC Falling Slew Rate
to switch to VBAT state(4)
VCC
Falling
VCC Power ->
VBAT Power
VCC < VCCSW,MAX
0.7
1.4
V/ms
VBAT
Battery Voltage
VBAT Static
VBAT Power
Clocks
operating
and RAM and reg-
isters retained
1.4
3.6
V
VBATSW
Battery Switchover Volt-
age Range(5)
VBAT Static
VCC Power ->
VBAT Power
1.6
3.6
V
VCC
VBAT
Power State
POR
VCCST
VCCRST
VCC Power
VCCST
POR
VCCSWF
VCC Power
VBAT Power
VBATSW
VCCSWR
VCC Power
VCCSWF
VBATRST
VBAT Power
POR



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