參數(shù)資料
型號(hào): M41T81MY6TR
廠商: STMICROELECTRONICS
元件分類: 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO18
封裝: 0.300 INCH, PLASTIC, SO-18
文件頁(yè)數(shù): 10/30頁(yè)
文件大小: 436K
代理商: M41T81MY6TR
M41T81
18/30
Square Wave Output
The M41T81 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. Once the selection of the
SQW frequency has been completed, the IRQ/FT/
OUT/SQW pin can be turned on and off under soft-
ware control with the Square Wave Enable Bit
(SQWE) located in Register 0Ah.
Table 4. Square Wave Output Frequency
Square Wave Bits
Square Wave
RS3
RS2
RS1
RS0
Frequency
Units
00
None
-
00
01
32.768
kHz
00
10
8.192
kHz
00
11
4.096
kHz
01
00
2.048
kHz
01
1.024
kHz
01
10
512
Hz
01
11
256
Hz
10
00
128
Hz
10
01
64
Hz
10
32
Hz
10
11
16
Hz
11
00
8
Hz
11
01
4
Hz
11
10
2
Hz
11
1
Hz
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