DocID6100 Rev 10 19/25
M41T00 DC and AC parameters
25
5 DC and AC parameters
This section summarizes the operating and measurement conditions, as well as the dc and
ac characteristics of the device. The parameters in the following DC and AC characteristic
tables are derived from tests performed under the measurement conditions listed in the
relevant tables. Designers should check that the operating conditions in their projects match
the measurement conditions when using the quoted parameters.
Figure 14. AC testing input/output waveform
Table 7. Operating and AC measurement conditions
(1)
1. Output Hi-Z is defined as the point where data is no longer driven.
Parameter M41T00
Supply voltage (V
CC
) 2.0 to 5.5 V
Ambient operating temperature (T
A
) -40 to 85 °C
Load capacitance (C
L
) 100 pF
Input rise and fall times
5 ns
Input pulse voltages 0.2 V
CC
to 0.8 V
CC
Input and output timing reference voltages 0.3 V
CC
to 0.7 V
CC
Table 8. Capacitance
Symbol
Parameter
(1)(2)
1. Effective capacitance measured with power supply at 3.3 V; sampled only, not 100% tested
2. At 25°C, f = 1 MHz
Min Max Unit
C
IN
Input capacitance (SCL) 7 pF
C
OUT
(3)
3. Output deselected.
Output capacitance (SDA,FT/OUT) 10 pF
t
LP
Low-pass filter input time constant (SDA and SCL) 250 1000 ns
AI02568
0.8V
CC
0.2V
CC
0.7V
CC
0.3V
CC
DC and AC parameters M41T00
20/25 DocID6100 Rev 10
Table 9. DC characteristics
Symbol Parameter
Test condition
(1)
Min Typ Max Unit
I
LI
Input leakage current
0 V = V
IN
= V
CC
±1 μA
I
LO
Output leakage current
0 V = V
OUT
= V
CC
±1 μA
I
CC1
Supply current Switch frequency = 100 kHz 300 μA
I
CC2
RTC supply current (standby)
SCL, SDA = V
CC
– 0.3 V
70 μA
V
IL
Input low voltage –0.3
0.3V
CC
V
V
IH
Input high voltage
0.7 V
CC
V
CC
+ 0.5
V
V
OL
Output low voltage
I
OL
= 3.0 mA
0.4 V
Output low voltage (open drain) FT/OUT 5.5 V
V
BAT
(2)
Battery supply voltage
2.5
(3)
3.5
(4)
V
I
BAT
Battery supply current
T
A
= 25 °C, V
CC
= 0 V
oscillator ON, V
BAT
= 3 V
0.8 1 μA
1. Valid for ambient operating temperature: T
A
= –40 to 85 °C; V
CC
= 2.0 to 5.5 V (except where otherwise noted).
2. STMicroelectronics recommends the RAYOVAC BR1225 or BR1632 (or equivalent) as the battery supply.
3. After switchover (V
SO
), V
BAT
(min) can be 2.0 V for crystal with RS = 40 k.
4. For rechargeable backup, V
BAT
(max) may be considered V
CC
.
Table 10. Crystal electrical characteristics
Symbol
Parameter
(1)(2)
Min Typ Max Units
f
O
Resonant frequency 32.768 kHz
R
S
Series resistance 60 k
C
L
Load capacitance 12.5 pF
1. Externally supplied if using the SO8 package. STMicroelectronics recommends the KDS DT-38, Tuning Fork Type (thru-
hole) or the DMX-26S, (SMD) quartz crystal for industrial temperature operations.
2. Load capacitors are integrated within the M41T00. Circuit board layout considerations for the 32.768 kHz crystal of
minimum trace lengths and isolation from RF generating signals should be taken into account.
DocID6100 Rev 10 21/25
M41T00 Package information
25
6 Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK
®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK
®
is an ST trademark.
6.1 SO8 package information
Figure 15. SO8 – 8-lead plastic small outline, 150 mils body width,
package outline
Note: Drawing is not to scale.
0016023_9

M41T00M6F

Mfr. #:
Manufacturer:
STMicroelectronics
Description:
Real Time Clock Serial 64 (8X8)
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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