M48T201V-70MH1 STMICROELECTRONICS [STMicroelectronics], M48T201V-70MH1 Datasheet - Page 18

• Manufacturer Part Number: M48T201V-70MH1
• Description: 3.3V-5V TIMEKEEPER CONTROLLER
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M48T201Y, M48T201V
Square Wave Output
The M48T201Y/V offers the user a programmable
square wave function which is output on the SQW
pin. RS3-RS0 Bits located in 7FFF0h establish the
square wave output frequency. These frequencies
are listed in Table 7. Once the selection of the
Table 7. Square Wave Output Frequency
18/33
RS3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
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 7FFF6h.
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
Hi-Z
512
256
128
64
32
16
8
4
2
1
Square Wave
Units
kHz
kHz
kHz
kHz
kHz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
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