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HT85F2270 Datasheet(PDF) 203 Page - Holtek Semiconductor Inc

Part # HT85F2270
Description  Standard 8051 8-Bit Flash MCU
PDF  226 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT85F2270 Datasheet(HTML) 203 Page - Holtek Semiconductor Inc

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Rev. 1.00
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Standard 8051 8-Bit Flash MCU
HT85F2260/HT85F2270/HT85F2280
S0RELL Register – UART0 Reload Low Register
SFR Address: AAh
Bit
7
6
5
4
3
2
1
0
Name
S0REL.7
S0REL.6
S0REL.�
S0REL.4
S0REL.�
S0REL.�
S0REL.1
S0REL.0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
1
1
0
1
1
0
0
1
S0RELH Register – UART0 Reload High Register
SFR Address: BAh
Bit
7
6
5
4
3
2
1
0
Name
—
—
—
—
—
—
S0REL.9
S0REL.8
R/W
—
—
—
—
—
—
R/W
R/W
POR
—
—
—
—
—
—
1
1
The UART0 Reload registers, S0RELL and S0RELH, are used to setup the UART0 baud rate
generation. The UART0 baud rate setup range is 10-bit wide, consisting of 8 bits in S0RELL and 2
bits in S0RELH.
SPPRE Register – UART Clock Prescaler Register
SFR Address: A5h
Bit
7
6
5
4
3
2
1
0
Name
—
—
—
—
S1PRE1
S1PRE0
S0PRE1
S0PRE0
R/W
—
—
—
—
R/W
R/W
R/W
R/W
POR
—
—
—
—
1
1
1
1
Bit 7~4
Unimplemented, read as “0”
Bit 3~2
S1PRE1, S1PRE0: UART 1 Reload Counter Clock Select
00: fSYS/12
01: fSYS/6
10: fSYS/4
11: fSYS
Bit 1~0
S0PRE1, S0PRE0: UART 0 Reload Counter Clock Select
00: fSYS/12
01: fSYS/6
10: fSYS/4
11: fSYS



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