mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 463

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor, Inc.
4. Lastly, FBI transitions into BLPI mode.
b. Loop until S[IREFST] is 1, indicating the internal reference clock has been
c. Loop until S[CLKST] are 2'b01, indicating that the internal reference clock is
a. C2 = 0x02 (2'b00000010)
selected as the reference clock source.
selected to feed MCGOUT.
• C1[CLKS] set to 2'b01 in order to switch the system clock to the internal
• C1[IREFS] set to 1 to select the internal reference clock as the reference
• C1[FRDIV] remain unchanged because the reference divider does not affect
• C2[LP] is 1
• C2[RANGE], C2[HGO], C2[EREFS], C1[IRCLKEN], and C1[IREFSTEN]
reference clock.
clock source.
the internal reference.
bits are ignored when the C1[IREFS] bit is set. They can remain set, or be
cleared at this point.
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Preliminary
Chapter 20 Multipurpose Clock Generator (MCG)
463