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參數資料
| 型號： | HT36A4 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | 8-Bit Music Synthesizer MCU |
| 中文描述： | 8位微控制器音樂合成器 |
| 文件頁數： | 5/22頁 |
| 文件大小： | 247K |
| 代理商： | HT36A4 |
R vs F Characteristics Curve
HT36A4
Rev. 1.00
5
July 2, 2003
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Function Description
Execution Flow
The system clock for the HT36A4 is derived from either
a crystal or an RC oscillator. The oscillator frequency di-
vided by 2 is the system clock for the MCU and it is inter-
nally divided into four non-overlapping clocks. One
instruction cycle consists of four system clock cycles.
Instruction fetching and execution are pipelined in such
a way that a fetch takes one instruction cycle while de-
coding and execution takes the next instruction cycle.
However, the pipelining scheme causes each instruc-
tion to effectively execute in one cycle. If an instruction
changes the program counter, two cycles are required
to complete the instruction.
Program Counter
PC
The 13-bit program counter (PC) controls the sequence
in which the instructions stored in program ROM are ex-
ecuted and its contents specify a maximum of 8192 ad-
dresses for each bank.
After accessing a program memory word to fetch an in-
struction code, the contents of the program counter are
incremented by one. The program counter then points
to the memory word containing the next instruction
code.
When executing a jump instruction, conditional skip ex-
ecution, loading PCL register, subroutine call, initial re-
set, internal interrupt, external interrupt or return from
subroutine, the PC manipulates the program transfer by
loading the address corresponding to each instruction.
Theconditionalskipisactivatedbyinstruction.Oncethe
condition is met, the next instruction, fetched during the
current instruction execution, is discarded and a dummy
cyclereplacesittoretrievetheproperinstruction.Other-
wise proceed with the next instruction.
The lower byte of the program counter (PCL) is a read-
able and writeable register (06H). Moving data into the
PCL performs a short jump. The destination will be
within 256 locations.
Once a control transfer takes place, an additional
dummy cycle is required.
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Execution flow
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| HT3810 | 128 NOTE MELODY GENERATORS |
| HT3810A | 128 NOTE MELODY GENERATORS |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| HT36A4_07 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Music Synthesizer 8-Bit MCU |
| HT36ARP | 功能描述:兩端交流開關元件 32-40V RoHS:否 制造商:STMicroelectronics 轉折電流 VBO:45 V 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23 封裝:Reel |
| HT36B | 功能描述:兩端交流開關元件 34-38V RoHS:否 制造商:STMicroelectronics 轉折電流 VBO:45 V 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23 封裝:Reel |
| HT-36B | 制造商:TECCOR 制造商全稱:TECCOR 功能描述:Bilateral Trigger Diacs |
| HT36B0 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:8-Bit Music Synthesizer MCU |
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