參數(shù)資料
型號(hào)： EM6821TQ52B
英文描述： Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0&degC to 70°C; Package: 8-EPSOIC
中文描述： 微控制器
文件頁(yè)數(shù)： 24/69頁(yè)
文件大小： 852K
代理商： EM6821TQ52B
EM6821
10/01, Revision A/386
Copyright
2001, EM Microelectronic-Marin SA
30
www.emmicroelectronic.com
Table 7.3.4 Timer Clock Frequency Select
FTimSel0
FTimSel1
Timer Clock
On 32 KHz operation
0
Ck[3]
4 Hz
1
0
Ck[5]
16 Hz
0
1
Ck[7]
64 Hz
1
Ck[1]
1 Hz
Table 7.3.5 Register RegMelPeri
Bit
Name
Reset
R/W
Description
3
Per[3]
0
W
Melody timer period MSB
2
Per[2]
0
W
Melody timer period
1
Per[1]
0
W
Melody timer period
0
Per[0]
0
W
Melody timer period LSB
The total timer period duration is calculated as following:
Duration = Value(RegMelPeri) x 1/Ck[n]
Where, Ck[n] is the timer clock frequency and Value(RegMelPeri) is the value of the register RegMelPeri.
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