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HT45F39 Datasheet(PDF) 25 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) 25 Page - Holtek Semiconductor Inc

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Rev. 1.10
24
July 01, 2016
Rev. 1.10
25
July 01, 2016
HT45F39/HT45F391
Ultrasonic Distance Measurement 8-bit Flash MCU
HT45F39/HT45F391
Ultrasonic Distance Measurement 8-bit Flash MCU
Flash Memory
Write Function
Enable Procedure
Set FMOD [2:0]=110&FWPEN=1
→Select FWEN mode & Start Flash write
Hardware activate a counter
Wrtie the following pattern to Flash Data register
FD1L= 00h , FD1H = 04h
FD2L=0dh, FD2H = 09h
FD3L=C3h , FD3H = 40h
Is pattern is
correct?
FWPEN=0
&
CFWEN=0
No
Yes
END
Is counter
Overflow?
No
Yes
FWPEN=0?
No
Yes
CFWEN=1
Success
Failed
Flash Memory Write Function Enable Procedure



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