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參數資料
| 型號： | HT1647(100QFP)A |
| 英文描述： | Controller Miscellaneous - Datasheet Reference |
| 中文描述： | 控制器雜項-數據表參考 |
| 文件頁數： | 21/22頁 |
| 文件大?。?/td> | 201K |
| 代理商： | HT1647(100QFP)A |
Note:
X stands for don t care
A8~A0 : RAM address
D3~D0 : RAM data
B4~B0 : PWM data
D/C : Data/Command mode
Def. : Power-on reset default
Alltheboldforms,namely
1 1 0
,
1 0 1
,and
1 0 0
,aremodecommands.Ofthese,
1 0 0
indicates
the command mode ID. If successive commands have been issued, the command mode ID ex-
cept for the first command will be omitted. The tone frequency source and the time base/WDT
clock frequency source can be derived from an on-chip 32kHz RC oscillator, a 32.768kHz crys-
tal oscillator, or an external 32kHz clock. Calculation of the frequency is based on the system
frequencysourcesasstatedabove.Itisrecommendedthatthehostcontrollershouldinitialize
theHT1647afterpower-onreset,otherwise,poweronresetmayfail,whichinturnleadstothe
malfunctioning of the HT1647.
HT1647
Rev. 1.00
21
June 1, 2001
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