M41T81M6F STMicroelectronics, M41T81M6F Datasheet - Page 15
![IC RTC SERIAL W/ALARM 8-SOIC](/photos/1/38/13851/497-8-soic_sml.jpg)
M41T81M6F
Manufacturer Part Number
M41T81M6F
Description
IC RTC SERIAL W/ALARM 8-SOIC
Manufacturer
STMicroelectronics
Type
Clock/Calendar/Alarmr
Datasheet
1.M41T81M6F.pdf
(29 pages)
Specifications of M41T81M6F
Memory Size
20B
Time Format
HH:MM:SS:hh (24 hr)
Date Format
YY-MM-DD-dd
Interface
I²C, 2-Wire Serial
Voltage - Supply
2 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-4709-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
M41T81M6F
Manufacturer:
STM
Quantity:
1 364
Part Number:
M41T81M6F
Manufacturer:
ST
Quantity:
20 000
Part Number:
M41T81M6F11
Manufacturer:
ST
Quantity:
20 000
M41T81
The IRQ/FT/OUT/SQW pin is an open drain output which requires a pull-up resistor to V
for proper operation. A 500-10 k resistor is recommended in order to control the rise time.
The FT bit is cleared on power-down.
Figure 10. Crystal accuracy across temperature
Figure 11. Clock calibration
NORMAL
POSITIVE
CALIBRATION
NEGATIVE
CALIBRATION
Frequency (ppm)
–100
–120
–140
–160
–20
–40
–60
–80
20
0
–40
–30
–20
–10
Doc ID 7529 Rev 10
0
10
Temperature °C
ΔF = K x (T – T
F
K
= –0.036 ppm/°C
20
30
T
O
= 25°C ± 5°C
O
)
2
40
2
± 0.006 ppm/°C
50
60
2
Clock operation
70
80
AI00594B
AI07888
15/29
CC