参数资料
型号: M41ST85Y-70MH6
厂商: STMICROELECTRONICS
元件分类: 时钟/数据恢复及定时提取
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO28
封装: 0.330 INCH, SNAPHAT, PLASTIC, SOH-28
文件页数: 10/32页
文件大小: 171K
代理商: M41ST85Y-70MH6
M41ST85Y, M41ST85W
18/32
Square Wave Output
The M41ST85Y/W offers the user a programma-
ble square wave function which is output on the
SQW pin. RS3-RS0 bits located in 13h establish
the square wave output frequency. These fre-
quencies are listed in Table 5. Once the selection
of the SQW frequency has been completed, the
SQW pin can be turned on and off under software
control with the Square Wave Enable Bit (SQWE)
located in Register 0Ah.
Table 5. Square Wave Output Frequency
Square Wave Bits
Square Wave
RS3
RS2
RS1
RS0
Frequency
Units
0
None
0
1
32.768
kHz
0
1
0
8.192
kHz
0
1
4.096
kHz
0
1
0
2.048
kHz
0
1
0
1
1.024
kHz
0
1
0
512
Hz
0
1
256
Hz
1
0
128
Hz
1
0
1
64
Hz
1
0
1
0
32
Hz
1
0
1
16
Hz
1
100
8
Hz
1
101
4
Hz
1
110
2
Hz
1
111
1
Hz
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