M41T81MX6TR STMicroelectronics, M41T81MX6TR Datasheet - Page 22

• Manufacturer Part Number: M41T81MX6TR
• Description: Real Time Clock Serial 512 (64x8)
• Manufacturer: STMicroelectronics

Specifications of M41T81MX6TR

• Function: Clock, Calendar, Alarm, Timer Interrupt
• Rtc Memory Size: 20 B
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial
• Package / Case: SO-28
• Time Format: HH:MM:SS:hh
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DC and AC parameters
22/29
Table 9.
1. Valid for ambient operating temperature: T
2. For IRQ/FT/OUT/SQW pin (open drain)
3. STMicroelectronics recommends the RAYOVAC BR1225 or BR1632 (or equivalent) as the battery supply.
4. After switchover (V
5. For rechargeable backup, V
Table 10.
1. Externally supplied. STMicroelectronics recommends the KDS DT-38: 1TA/1TC252E127, Tuning Fork
2. Load capacitors are integrated within the M41T81. Circuit board layout considerations for the 32.768 kHz
Figure 15. Power down/up mode AC waveforms
V
Sym
I
I
BAT
I
V
I
V
CC1
CC2
V
BAT
I
Type (thru-hole) or the DMX-26S: 1TJS125FH2A212, (SMD) quartz crystal for industrial temperature
operations. KDS can be contacted at [e-mail] or http://www.kdsj.co.jp for further information on
this crystal type.
crystal of minimum trace lengths and isolation from RF generating signals should be taken into account.
LO
LI
OL
Sym
IH
IL
V CC
V SO
SDA
SCL
R
C
f
(3)
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)
Battery supply voltage
Battery supply current
DC characteristics
Crystal electrical characteristics
Resonant frequency
Series resistance
Load capacitance
(2)
tPD
Parameter
SO
), V
Parameter
BAT
BAT
(min) can be 2.0 V for crystal with R
(max) may be considered V
Doc ID 7529 Rev 10
(1)(2)
oscillator on, V
SCL,SDA = V
Switch freq = 400 kHz
T
A
A
IRQ/OUT/FT/SQW
0V ≤ V
= –40 to 85°C; V
Test condition
0V ≤ V
= 25 °C, V
I
I
OL
OL
DON'T CARE
= 3.0 mA
= 10 mA
OUT
IN
Min
CC
≤ V
CC
-
-
-
BAT
≤ V
CC
– 0.3V
CC
= 0 V
CC
(1)
CC
= 3 V
.
= 2.0 to 5.5 V (except where noted).
S
= 40 kΩ.
32.768
12.5
Typ
0.7V
2.5
–0.3
Min
(4)
CC
Typ
0.6
3
Max
60
V
trec
0.3V
CC
3.5
Max
400
100
0.4
0.4
5.5
±1
±1
1
+ 0.3
(5)
CC
Units
M41T81
kHz
kΩ
pF
AI00596
Unit
µA
µA
µA
µA
µA
V
V
V
V
V
V