MC9S12P64VQK Freescale Semiconductor, MC9S12P64VQK Datasheet - Page 213

• Manufacturer Part Number: MC9S12P64VQK
• Description: 16-bit Microcontrollers - MCU 16 BIT 64K FLASH
• Manufacturer: Freescale Semiconductor

Specifications of MC9S12P64VQK

• Rohs: yes
• Core: S12
• Processor Series: MC9S12P
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 64 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 4 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 5 V
• Operating Temperature Range: - 40 C to 105 C
• Package / Case: QFP-80
• Mounting Style: SMD/SMT
• Interface Type: I2C, SCI, SPI
• Program Memory Type: Flash

7.3.2.7
This register controls the PLL functionality.
Read: Anytime
Write: Anytime if PROT=0 (CPMUPROT register) and PLLSEL=1 (CPMUCLKS register). Else write has
no effect.
Freescale Semiconductor
0x003A
FM1, FM0
Reset
Field
5, 4
W
R
PLL Frequency Modulation Enable Bits — FM1 and FM0 enable frequency modulation on the VCOCLK. This
is to reduce noise emission. The modulation frequency is f
S12CPMU PLL Control Register (CPMUPLL)
0
0
7
Write to this register clears the LOCK and UPOSC status bits.
Care should be taken to ensure that the bus frequency does not exceed the
specified maximum when frequency modulation is enabled.
The frequency modulation (FM1 and FM0) can not be used if the Oscillator
Filter is enabled.
Figure 7-10. S12CPMU PLL Control Register (CPMUPLL)
0
0
6
Table 7-6. CPMUPLL Field Descriptions
S12P-Family Reference Manual, Rev. 1.13
Table 7-7. FM Amplitude selection
FM1
FM1
0
5
0
0
1
1
0
1
0
1
FM0
NOTE
NOTE
NOTE
FM0
0
4
Description
FM Amplitude /
FM off
±1%
±2%
±4%
S12 Clock, Reset and Power Management Unit (S12CPMU)
f
VCO
ref
0
0
3
divided by 16. See
Variation
0
0
2
Table 7-7
0
0
1
for coding.
0
0
0
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