M41T81MX6TR STMicroelectronics, M41T81MX6TR Datasheet - Page 22
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M41T81MX6TR
Manufacturer Part Number
M41T81MX6TR
Description
Real Time Clock Serial 512 (64x8)
Manufacturer
STMicroelectronics
Datasheet
1.M41T81M6.pdf
(29 pages)
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 kouhou@kdsj.co.jp 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