M41T60 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'M41T60' PDF : 27 Pages View PDF
Clock operation
M41T60
Table 2. Register map
Address
D7
Data
D6 D5 D4
0
ST
10 seconds
1
OFIE
10 minutes
2
0
0
10 hours
3
0
0
0
0
4
0
0
10 date
5
CB1 CB0 0 10 M.
6
10 Years
7
OUT FT S
D3 D2 D1 D0
Function/range
BCD format
Seconds
Minutes
Hours
0
Day
Date
Month
Years
Calibration
Seconds
00-59
Minutes
00-59
Hours
00-23
Day
01-07
Date
01-31
Century/month 0-3/01-12
Year
00-99
Calibration
● 0 = Must be set to '0.'
● CB0, CB1 = century bits
● FT = frequency test bits
● OFIE = oscillator fail interrupt enable bit
● OUT = output level
● S = sign bit
● ST = stop bit
Figure 11. Crystal accuracy across temperature
Frequency (ppm)
20
0
–20
–40
–60
–80
–100
–120
ΔF
F
=
K
x
(T
–
TO)2
K = –0.036 ppm/°C2 ± 0.006 ppm/°C2
TO = 25°C ± 5°C
–140
–160
–40 –30 –20 –10 0
10 20 30 40 50 60 70 80
Temperature °C
AI07888
14/27
Doc ID 10396 Rev 13
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