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HT85F2240 Datasheet(PDF) 30 Page - Holtek Semiconductor Inc

Part # HT85F2240
Description  A/D Flash 8051 Core Low Pin Count MCU
PDF  147 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT85F2240 Datasheet(HTML) 30 Page - Holtek Semiconductor Inc

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Rev. 1.10
�0 of 147
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A/D Flash 8051 Core Low Pin Count MCU
HT85F2230/HT85F2240
FMAR1 Register – Flash Program Memory Address Register 1
SFR Address: FBh
Bit
7
6
5
4
3
2
1
0
Name
FADDR1� FADDR14 FADDR1� FADDR1� FADDR11 FADDR10
FADDR9
FADDR8
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
0
0
0
Bit 7~0
Flash Program Memory address
Flash Program Memory address bit 15~bit 8
FMAR2 Register – Flash Program Memory Address Register 2
SFR Address: FCh
Bit
7
6
5
4
3
2
1
0
Name
INBLK
FADDR�� FADDR�1 FADDR�0 FADDR19 FADDR18 FADDR17 FADDR16
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
0
0
0
Bit 7
INBLK: Flash memory access block selection
0: Main Flash program memory area
1: Information block area
Bit 6~0
Flash Program Memory address
Flash Program Memory address bit 22~bit 16
When writing to the Flash Memory Address Registers, they must be written in the order of
FMAR2 register first and FMAR0 register last.
FMDR Register – Flash Program Memory Data Register
SFR Address: FDh
Bit
7
6
5
4
3
2
1
0
Name
FDAT7
FDAT6
FDAT�
FDAT4
FDAT�
FDAT�
FDAT1
FDAT0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
0
0
0
Bit 7~0
Flash Program Memory Data register
Flash Program Memory Data bit 7~bit 0



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