DC and AC parameters
M41T00AUD
36/44
Table 12.
DC characteristics
Symbol
Parameter
Test condition
(1)
Min
Typ
Max
Unit
I
LI
Input leakage current
0V
≤
V
IN
≤
V
CC
,
SCL pin
±1
µA
I
LO
Output leakage current
0V
≤
V
OUT
≤
V
CC
,
OUT and SDA pins
±1
µA
I
CC1
Active supply current
No audio (AIN = V
BIAS
),
I
2
C bus active at 400kHz
6.6
14.7
mA
I
CC2
Standby supply current
No audio (AIN = V
BIAS
),
I
2
C bus not active, SCL = 0Hz
All inputs
≥
V
CC
– 0.2V
or
≤
V
SS
+ 0.2V
6.4
14.3
mA
V
IL
Input Low voltage
–0.3
0.3V
CC
V
V
IH
Input High voltage
0.7V
CC
V
CC
+ 0.3
V
V
OL
Output Low voltage
I
OL
= 3.0mA
0.4
V
Output Low Voltage (open
drain)
(2)
I
OL
= 3.0mA
0.4
V
Pull-up supply voltage
(open drain)
IRQ/FT/OUT, SDA, SCL
Vcc
V
V
BACK
(3)
RTC back-up supply
voltage
1.7
V
CC
V
I
BACK
RTC backup supply current
T
A
= 25°C, V
CC
= 0V
oscillator ON,
V
BACK
= 3V
0.6
1
µA
1.
Valid for ambient operating temperature: T
A
= 0 to 70°C; V
CC
= 3.0 to 3.6V (except where otherwise noted).
2.
For open drain pins IRQ/FT/OUT and SDA
3.
STMicroelectronics recommends the RAYOVAC BR1225 or BR1632 (or equivalent) when a battery is used.
Table 13.
Crystal electrical characteristics
Symbol
Parameter
(1)(2)
Min
Typ
Max
Units
f
O
Resonant frequency
32.768
kHz
R
S
Series resistance
40
K
Ω
C
L
Load capacitance
12.5
pF
1.
Externally supplied if using the SO8 package. STMicroelectronics recommends the KDS DT-38: 1TA/1TC252E127, Tuning
Fork Type (thru-hole) or the DMX-26S: 1TJS125FH2A212, (SMD) quartz crystal for industrial temperature operations. KDS
can be contacted at http://xxx.kds.info/index_en.htm for further information on this crystal type.
2.
Load capacitors are integrated within the M41T00AUD. Circuit board layout considerations for the 32.768kHz crystal of
minimum trace lengths and isolation from RF generating signals should be taken into account.
