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T80C5112-RKSCV 数据表(PDF) 13 Page - ATMEL Corporation

部件名 T80C5112-RKSCV
功能描述  8-bit Microcontroller with A/D converter
PDF  97 Pages
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制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

T80C5112-RKSCV 数据表(HTML) 13 Page - ATMEL Corporation

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Rev. B - November 10, 2000
13
Preliminary
T80C5112
6.6.3. Clock selection register
The clock selectionl register is used to define the clock system behavior
CKSEL - Clock Selection Register (85h)
Reset Value = XXXX XXX "RST_OSC" b
Not bit addressable
6.6.4. Clock prescaler register
This register is used to reload the clock prescaler of the CPU and peripheral clock.
CKRL - Clock prescaler Register (97h)
Reset Value = 1111 1111b
Not bit addressable
6.6.5. Clock control register
This register is used to control the X2 mode of the CPU and peripheral clock.
Table 2. CKCON0 Register
7
6
5
4
3
2
1
0
-
-
-
-
-
-
CKS
Bit
Number
Bit
Mnemonic
Description
7
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
6
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
5
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
4
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
3
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
2
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
1
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
0
CKS
Active oscillator selection
This bit is used to select the active oscillator
1: The crystal oscillator is selected
0: The high speed RC oscillator is selected.
7
6
5
4
3
2
1
0
M
Bit
Number
Bit
Mnemonic
Description
7:0
CKRL
0000 0000b: Division factor equal 512
1111 1111b: Division factor equal 2
M: Division factor equal 2*(256-M)



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