S9S08DZ60F2MLF Freescale Semiconductor, S9S08DZ60F2MLF Datasheet - Page 162
S9S08DZ60F2MLF
Manufacturer Part Number
S9S08DZ60F2MLF
Description
8-bit Microcontrollers - MCU M74K MASK ONLY-AUTO
Manufacturer
Freescale Semiconductor
Datasheet
1.S9S08DZ60F2MLH.pdf
(416 pages)
Specifications of S9S08DZ60F2MLF
Rohs
yes
Core
HCS08
Data Bus Width
8 bit
Maximum Clock Frequency
40 MHz
Program Memory Size
60 KB
Data Ram Size
4 K
On-chip Adc
Yes
Operating Supply Voltage
2.7 V to 5.5 V
Operating Temperature Range
- 40 C to + 125 C
Package / Case
LQFP-48
Mounting Style
SMD/SMT
Processor Series
MC9S08DZ60
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Chapter 8 Multi-Purpose Clock Generator (S08MCGV1)
162
3. Then, BLPE mode transitions into PBE mode:
4. Last, PBE mode transitions into PEE mode:
c) MCGC1 = 0x98 (%10011000)
d) MCGC3 = 0x44 (%01000100)
e) Loop until PLLST (bit 5) in MCGSC is set, indicating that the current source for the PLLS
a) Clear LP (bit 3) in MCGC2 to 0 here to switch to PBE mode
b) Then loop until LOCK (bit 6) in MCGSC is set, indicating that the PLL has acquired lock
a) MCGC1 = 0x18 (%00011000)
b) Loop until CLKST (bits 3 and 2) in MCGSC are %11, indicating that the PLL output is selected
– RDIV (bits 5-3) set to %011, or divide-by-8 because 8 MHz / 8= 1 MHz which is in the 1
– PLLS (bit 6) set to 1, selects the PLL. In BLPE mode, changing this bit only prepares the
– VDIV (bits 3-0) set to %0100, or multiply-by-16 because 1 MHz reference * 16 = 16 MHz.
clock is the PLL
– CLKS (bits7 and 6) in MCGSC1 set to %00 in order to select the output of the PLL as the
to feed MCGOUT in the current clock mode
– Now, With an RDIV of divide-by-8, a BDIV of divide-by-1, and a VDIV of multiply-by-16,
MHz to 2 MHz range required by the PLL. In BLPE mode, the configuration of the RDIV
does not matter because both the FLL and PLL are disabled. Changing them only sets up the
the dividers for PLL usage in PBE mode
MCG for PLL usage in PBE mode
In BLPE mode, the configuration of the VDIV bits does not matter because the PLL is
disabled. Changing them only sets up the multiply value for PLL usage in PBE mode
system clock source
MCGOUT = [(8 MHz / 8) * 16] / 1 = 16 MHz, and the bus frequency is MCGOUT / 2, or 8
MHz
MC9S08DZ60 Series Data Sheet, Rev. 4
Freescale Semiconductor
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