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HT85F2270 bảng dữ liệu(PDF) 38 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) 38 Page - Holtek Semiconductor Inc

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Rev. 1.00
�8 of ��6
�a� 1�� �01�
Standard 8051 8-Bit Flash MCU
HT85F2260/HT85F2270/HT85F2280
Page Erase Operation
The Flash Memory must be first unlocked before implementing a page erase procedure. The
flash memory address is setup using the control registers, FMAR0, FMAR1 and FMAR2. The
Flash Memory Page Erase function is selected by the control bit, FMCR.2, in the FMCR register.
Setting the FMCR.7 bit high will start the Page Erase procedure. When the procedure has finished,
the MCU will continue to run automatically. The following flowchart illustrates the Page Erase
procedure.
START
END
Write F�AR�
Write F�AR1
Write F�AR0
�CU waits for page-erasing finished.
Then �CU continues to run.
Flash memor� controller must be
In unlocked state
F�CR Bit � = 1
This will trigger page-erasing action
F�CR Bit 7 = 1
Check F�SR Bit 1 = 1
Yes
No
Page Erase Flowchart



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