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HT45F39 Datasheet(PDF) 72 Page - Holtek Semiconductor Inc

Part # HT45F39
Description  Ultrasonic Distance Measurement 8-bit Flash MCU
PDF  102 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45F39 Datasheet(HTML) 72 Page - Holtek Semiconductor Inc

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Rev. 1.10
72
July 01, 2016
Rev. 1.10
73
July 01, 2016
HT45F39/HT45F391
Ultrasonic Distance Measurement 8-bit Flash MCU
HT45F39/HT45F391
Ultrasonic Distance Measurement 8-bit Flash MCU
WR Pointer
Addr0
Addr1
Addr2 Addr3
Addr4
Addr5
Addr6
Addr17
Addr7
Addr16
Addr8
Addr15
Addr14
Addr13
Addr12 Addr11
Addr10
Addr9
RD Pointer
FIFO Structure
Note:1.ToreaddatafromtheFIFO,theREADaddresswillincreasebyoneautomaticallyuntilthe
READaddressisequaltotheWRITEaddress.
2.TheFIFOisenabledbytheFSTARTcontrolbit.NomatterwhetherthehardwareAuto-
EnvelopProcessingUnitisenabledbytheSAVPbitornot,whentheAEPisdisabled,the
FIFOcanstillbeaccessedbycontrolregisters.
FIFOOUT register
TheFIFOOUTregisterisareadonlyregister.ThedesignercanusethisregistertoreadtheFIFOdata.
• FIFOOUT (10-Level FIFO Reading Register)
BIT
7
6
5
4
3
2
1
0
NAME
D7
D6
D5
D4
D3
D2
D1
D0
R/W
R
R
R
R
R
R
R
R
POR
0
0
0
0
0
0
0
0
FIFOIN register
TheFIFOINregisterisawriteonlyregister.ThedesignercanusethisregistertowriteFIFOdata.
• FIFOIN (10-Level FIFO Writing Register)
BIT
7
6
5
4
3
2
1
0
NAME
D7
D6
D5
D4
D3
D2
D1
D0
R/W
W
W
W
W
W
W
W
W
POR
0
0
0
0
0
0
0
0
FIFOWR_ADDR
BIT
7
6
5
4
3
2
1
0
NAME
—
—
—
FWR4
FWR3
FWR2
FWR1
FWR0
R/W
—
—
—
R
R
R
R
R
POR
—
—
—
0
0
0
0
0
ThecurrentwriteaddressoftheFIFOdata.isFIFOaddressItisareadonlyregister.



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