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參數資料
| 型號： | HT95CXXX |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | CID Type Phone 8-Bit MCU |
| 中文描述： | 刑事偵緝式電話8位微控制器 |
| 文件頁數： | 33/51頁 |
| 文件大?。?/td> | 384K |
| 代理商： | HT95CXXX |
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HT95CXXX
Rev. 1.50
33
May 26, 2005
PFD Generator
Bit No.
Label
R/W
Function
3~0
RO
Unused bit, read as 0
4
PFDEN
RW
1: Enable PFD output
0: Disable PFD output, the MUSIC pin output low level.
5
6
PRES0
PRES1
RW
Bit6, 5=00: Prescaler output= PFD frequency source/1
Bit6, 5=01: Prescaler output= PFD frequency source/2
Bit6, 5=10: Prescaler output= PFD frequency source/4
Bit6, 5=11: Prescaler output= PFD frequency source/8
7
FPFD
RW
1: The PFD frequency source is 3.58MHz/4
0: The PFD frequency source is 32768Hz
PFDC (2EH) Register
Bit No.
Label
R/W
Function
7~0
RW
PFD data register
PFDD (2FH) Register
The PFD (programmable frequency divider) is implemented in the phone controller. It is composed of two portions: a
prescaler and a general counter.
The prescaler is controlled by the register bits, PRES0 and PRES1. The general counter is programmed by an 8-bit
register PFDD.
The source for this generator can be selected from 3.58MHz/4 or 32768Hz. To enable the PFD output, write 1 to the
PFDEN bit.
The PFDD is inhibited to write while the PFD is disabled. To modify the PFDD contents, the PFD must be enabled.
When the generator is disabled, the PFDD is cleared by hardware.
PFD output frequency=Prescaler output
2x(N+1)
, where N=the value of the PFDD
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相關PDF資料 |
PDF描述 |
|---|---|
| HT95L400-128QFP-A | LCD Type Phone 8-Bit MCU |
| HT95L100-64QEP-A | LCD Type Phone 8-Bit MCU |
| HT95L10P-64QEP-A | LCD Type Phone 8-Bit MCU |
| HT95L100-64QFP-A | 8-Bit LCD Type Phone Controller MCU |
| HT95L10P-64QFP-A | 8-Bit LCD Type Phone Controller MCU |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HT95L000 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:CID Type Phone 8-Bit MCU |
| HT95L000-56SSOP-A | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:LCD Type Phone 8-Bit MCU |
| HT95L00P | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:LCD Type Phone 8-Bit MCU |
| HT95L00P-56SSOP-A | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:LCD Type Phone 8-Bit MCU |
| HT95L100 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:CID Type Phone 8-Bit MCU |
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