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HT85F2270 bảng dữ liệu(PDF) 39 Page - Holtek Semiconductor Inc

tên linh kiện HT85F2270
Giải thích chi tiết về linh kiện  Standard 8051 8-Bit Flash MCU
PDF  226 Pages
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nhà sản xuất  HOLTEK [Holtek Semiconductor Inc]
Trang chủ  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT85F2270 bảng dữ liệu(HTML) 39 Page - Holtek Semiconductor Inc

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Rev. 1.00
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Standard 8051 8-Bit Flash MCU
HT85F2260/HT85F2270/HT85F2280
Byte Read Operation
The Flash memory must be first unlocked before implementing a byte read procedure. The flash
memory address is setup using the control registers, FMAR0, FMAR1 and FMAR2. The Flash
Memory Page Read function is selected by the control bit, FMCR.1, in the FMCR register. When
the FMCR.7 bit is set high the Byte Read procedure will be initiated. When the procedure is ready,
the MCU will continue to run automatically. The following flowchart illustrates the Byte Read
procedure.
START
END
Write F�AR�
Write F�AR1
Write F�AR0
Flash memor� controller must be
In unlocked state
F�CR Bit 1 = 1
This will trigger b�te-reading action
F�CR Bit 7 = 1
Read F�DR
End Reading
Yes
No
Check F�SR Bit 1 = 1
Yes
No
Byte Read Flowchart



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