AB08XX Series
Real Time Clock Module
Date of Issue: Sept. 10
th
, 2012
Page (6) of (12)
3.0 x 3.0 mm
Abracon Drawing #
ESD Sensitive
Revision #: Initial Release
5.3
Supply Current
T
A =
-40 °C to 85 °C,
V
BAT
= 0 V to 3.6 V, TYP values at 25 °C
SYMBOL
PARAMETER
V
CC
supply
current during
I
2
C burst
read/write
V
CC
supply
current during
SPI burst
read/write
V
CC
supply
current in XT
oscillator mode.
V
CC
supply
current in RC
oscillator mode.
V
CC
supply
current in
autocalibrated
RC oscillator
mode.
V
BAT
supply
current in XT
oscillator mode.
V
BAT
supply
current in RC
oscillator mode.
V
BAT
supply
current in
autocalibrated
RC oscillator
mode.
V
BAT
supply
current in V
CC
powered mode.
TEST
CONDITIONS
400kHz bus speed,
10k pull-up resistors
on SCL/SDA. (1)
V
CC
3.0V
1.8V
3.0V
2 MHz bus speed (2)
Time keeping mode
with XT oscillator
running. (3)
Time keeping mode
with only the RC
oscillator running
(XT oscillator is off).
(3)
Time keeping mode
with only RC
oscillator running and
autocalibration
enabled. ACP = 512
seconds. (3)
Time keeping mode
with XT oscillator
running. (3)
Time keeping mode
with only the RC
oscillator running
(XT oscillator is off).
(3)
Time keeping mode
with only RC
oscillator running and
autocalibration
enabled. ACP = 512
seconds. (3)
V
CC
powered mode.
(3)
1.8V
3.0V
1.8V
3.0V
1.8V
3.0V
NA
NA
NA
NA
NA
V
BAT
MIN
TYP
20
10
10
5
55
50
15
12
18
nA
nA
nA
µA
µA
MA
X
UNIT
The current supplied into the VCC or VBAT power inputs under various conditions is shown below.
I
VCC:I2C
I
VCC:SPI
I
VCC:XT
I
VCC:RC
I
VCC:ACAL
1.8V
15
I
VBAT:XT
3.0V
< 1.5V
1.8V
3.0V
< 1.5V
1.8V
3.0V
< 1.5V
55
50
15
12
18
nA
nA
nA
I
VBAT:RC
I
VBAT:ACAL
1.8V
15
3.0V
> 1.5V
1.8V
290
190
pA
I
VBAT:VCC
(1)
Excluding external peripherals and pull-up resistor current. All other inputs (besides SDA and SCL) are at 0V or
V
CC
. AB080X and AB180X only.
(2)
Excluding external peripheral current. All other inputs (besides SDI, nCE and SCL) are at 0V or V
CC
. AB081X and
AB181X only.
(3)
All inputs and outputs are at 0V or V
CC
.
ABRACON [ ABRACON CORPORATION ]
