M41T80_11 STMICROELECTRONICS [STMicroelectronics], M41T80_11 Datasheet - Page 20

• Manufacturer Part Number: M41T80_11
• Description: Serial access real-time clock with alarm
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

DC and AC parameters
Table 10.
1. Valid for ambient operating temperature: T
2. At 25 °C.
3. For IRQ/FT/OUT, RST, and 32 KHz pins (open drain)
Table 11.
1. Externally supplied if using the SO8 package. STMicroelectronics recommends the KDS DT-38: 1TA/1TC252E127, Tuning
2. Load capacitors are integrated within the M41T80. Circuit board layout considerations for the 32.768 kHz crystal of
20/27
Symbol
I
CC2
I
V
V
Fork Type (thru-hole) or the DMX-26S: 1TJS125FH2A212, (SMD) quartz crystal for industrial temperature operations.
minimum trace lengths and isolation from RF generating signals should be taken into account.
I
CC1
V
I
LO
OL
LI
IH
IL
(2)
Sym
R
C
f
O
S
L
Input leakage current
Output leakage current
Supply current
Supply current
(standby)
Input low voltage
Input high voltage
Output low voltage
Output low voltage
(open drain)
Pull-up supply voltage
(open drain)
DC characteristics
Crystal electrical characteristics
Parameter
Resonant frequency
Series resistance
Load capacitance
(3)
Parameter
Switch freq (SCL) = 0 Hz
All inputs = V
(1) (2)
Switch freq (SCL) = 400 kHz
IRQ/OUT/SQW, F
A
= –40 to 85 °C; V
Doc ID 9074 Rev 5
0 V ≤ V
Test condition
0 V ≤ V
CC
I
I
OL
OL
– 0.2 V
= 3.0 mA
= 10 mA
Min
OUT
IN
32K
≤ V
≤ V
SQWE = 1
SQWE = 0
, SCL, SDA
32KE = 1
32KE = 0
CC
CC
(1)
CC
and
or
= 2.0 to 5.5 V (except where noted).
32.768
12.5
Typ
3.0 V
5.5 V
3.0 V
5.5 V
3.0 V
5.5 V
0.7V
–0.3
Min
CC
Max
60
Typ
1.8
1.5
V
0.3V
CC
Max
200
3.0
2.4
0.4
5.5
0.4
±1
±1
30
35
31
+ 0.3
CC
Units
kHz
kΩ
pF
M41T80
Unit
µA
µA
µA
µA
µA
µA
µA
µA
V
V
V
V
V