Freescale Semiconductor Demonstration Board for Freescale MC9S12XHY256 Microcontroller DEMO9S12XHY256 DEMO9S12XHY256 用户手册
产品代码
DEMO9S12XHY256
S12XE Clocks and Reset Generator (S12XECRGV2)
MC9S12XHY-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
273
0001 (
÷
2)
OFF
2x2
10
2x2
11
2x2
12
2x2
13
2x2
14
2x2
15
2x2
16
0010 (
÷
3)
OFF
3x2
10
3x2
11
3x2
12
3x2
13
3x2
14
3x2
15
3x2
16
0011 (
÷
4)
OFF
4x2
10
4x2
11
4x2
12
4x2
13
4x2
14
4x2
15
4x2
16
0100 (
÷
5)
OFF
5x2
10
5x2
11
5x2
12
5x2
13
5x2
14
5x2
15
5x2
16
0101 (
÷
6)
OFF
6x2
10
6x2
11
6x2
12
6x2
13
6x2
14
6x2
15
6x2
16
0110 (
÷
7)
OFF
7x2
10
7x2
11
7x2
12
7x2
13
7x2
14
7x2
15
7x2
16
0111 (
÷
8)
OFF
8x2
10
8x2
11
8x2
12
8x2
13
8x2
14
8x2
15
8x2
16
1000 (
÷
9)
OFF
9x2
10
9x2
11
9x2
12
9x2
13
9x2
14
9x2
15
9x2
16
1001 (
÷
10)
OFF
10x2
10
10x2
11
10x2
12
10x2
13
10x2
14
10x2
15
10x2
16
1010 (
÷
11)
OFF
11x2
10
11x2
11
11x2
12
11x2
13
11x2
14
11x2
15
11x2
16
1011 (
÷
12)
OFF
12x2
10
12x2
11
12x2
12
12x2
13
12x2
14
12x2
15
12x2
16
1100 (
÷
13)
OFF
13x2
10
13x2
11
13x2
12
13x2
13
13x2
14
13x2
15
13x2
16
1101 (
÷
14)
OFF
14x2
10
14x2
11
14x2
12
14x2
13
14x2
14
14x2
15
14x2
16
1110 (
÷
15)
OFF
15x2
10
15x2
11
15x2
12
15x2
13
15x2
14
15x2
15
15x2
16
1111 (
÷
16)
OFF
16x2
10
16x2
11
16x2
12
16x2
13
16x2
14
16x2
15
16x2
16
1. Denotes the default value out of reset.This value should be used to disable the RTI to ensure future backwards compatibility.
Table 7-11. RTI Frequency Divide Rates for RTDEC=1
RTR[3:0]
RTR[6:4] =
000
(1x10
3
)
001
(2x10
3
)
010
(5x10
3
)
011
(10x10
3
)
100
(20x10
3
)
101
(50x10
3
)
110
(100x10
3
)
111
(200x10
3
)
0000 (
÷
1)
1x10
3
2x10
3
5x10
3
10x10
3
20x10
3
50x10
3
100x10
3
200x10
3
0001 (
÷
2)
2x10
3
4x10
3
10x10
3
20x10
3
40x10
3
100x10
3
200x10
3
400x10
3
0010 (
÷
3)
3x10
3
6x10
3
15x10
3
30x10
3
60x10
3
150x10
3
300x10
3
600x10
3
0011 (
÷
4)
4x10
3
8x10
3
20x10
3
40x10
3
80x10
3
200x10
3
400x10
3
800x10
3
0100 (
÷
5)
5x10
3
10x10
3
25x10
3
50x10
3
100x10
3
250x10
3
500x10
3
1x10
6
0101 (
÷
6)
6x10
3
12x10
3
30x10
3
60x10
3
120x10
3
300x10
3
600x10
3
1.2x10
6
Table 7-10. RTI Frequency Divide Rates for RTDEC = 0
RTR[3:0]
RTR[6:4] =
000
(OFF)
001
(2
10
)
010
(2
11
)
011
(2
12
)
100
(2
13
)
101
(2
14
)
110
(2
15
)
111
(2
16
)