M41ST85WMX6E STMICROELECTRONICS [STMicroelectronics], M41ST85WMX6E Datasheet - Page 19
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M41ST85WMX6E
Manufacturer Part Number
M41ST85WMX6E
Description
3.0/3.3V I2C Combination Serial RTC, NVRAM Supervisor and Microprocessor Supervisor
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.M41ST85WMX6E.pdf
(34 pages)
- Current page: 19 of 34
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Square Wave Output
The M41ST85W offers the user a programmable
square wave function which is output on the SQW
pin. RS3-RS0 bits located in 13h establish the
square wave output frequency. These frequencies
are listed in
Table 4. Square Wave Output Frequency
RS3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Table 4.
Once the selection of the
RS2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Square Wave Bits
RS1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
SQW frequency has been completed, the SQW
pin can be turned on and off under software con-
trol with the Square Wave Enable Bit (SQWE) lo-
cated in Register 0Ah.
RS0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Frequency
32.768
8.192
4.096
2.048
1.024
None
512
256
128
64
32
16
8
4
2
1
Square Wave
M41ST85W
Units
kHz
kHz
kHz
kHz
kHz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
–
19/34
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