mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 123

• Manufacturer Part Number: mc68hc908sr12
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
NOTE:
19.6608 MHz
29.4912 MHz
The values for P, E, N, L, and R can only be programmed when the PLL
is off (PLLON = 0).
Table 8-1
notation):
9.8304 MHz
CGMVCLK
10.0 MHz
8.0 MHz
16 MHz
20 MHz
32 MHz
32 MHz
32 MHz
32 MHz
9. Program the PLL registers accordingly:
a. In the PRE bits of the PLL control register (PCTL), program
b. In the VPR bits of the PLL control register (PCTL), program
d. In the PLL VCO range select register (PMRS), program the
e. In the PLL reference divider select register (PMDS), program
c. In the PLL multiplier select register low (PMSL) and the PLL
provides numeric examples (numbers are in hexadecimal
Clock Generator Module (CGM)
the binary equivalent of P.
the binary equivalent of E.
multiplier select register high (PMSH), program the binary
equivalent of N.
binary coded equivalent of L.
the binary coded equivalent of R.
19.6608 MHz
29.4912 MHz
9.8304 MHz
CGMPCLK
10.0 MHz
8.0 MHz
16 MHz
20 MHz
32 MHz
16 MHz
8 MHz
4 MHz
Table 8-1. Numeric Examples
2.4576 MHz
4.9152 MHz
7.3728 MHz
2.0 MHz
4.0 MHz
5.0 MHz
8.0 MHz
4.0 MHz
2.5 MHz
2.0 MHz
1.0 MHz
f
BUS
32.768 kHz
32.768 kHz
32.768 kHz
32.768 kHz
32.768 kHz
32.768 kHz
32.768 kHz
32.768 kHz
32.768 kHz
32.768 kHz
32.768 kHz
f
RCLK
Clock Generator Module (CGM)
R
1
1
1
1
1
1
1
1
1
1
1
Functional Description
3D1
12C
1E9
1E9
132
258
263
384
7B
F5
F5
N
P
0
0
0
0
0
0
0
0
1
2
3
Data Sheet
E
0
1
1
1
2
2
2
2
2
2
2
D1
D1
C0
D0
D0
D0
D0
82
80
83
80
123
L