NXP Semiconductors MPC5644A Reference Manual page 1709

Table A-2. Changes between revisions 1 and 2 (continued)
Chapter
Chapter 32
Power Management Controller
(PMC)
Freescale Semiconductor
• "Low power RAM test" added to list of operating modes.
• In the Functional Description section, detail added regarding disabling the
voltage regulators.
• PMC Signals table updated:
* VDDREG is 4.5-5.5V (was 4.0- 5.5V)
* VDD3p3 is 3.3-3.6V (was 3.0-3.6V)
* VDD1p1 is 1.2-1.32V (was 1.08-1.32V)
• VDDREG requires decoupling capacitor on the order of 4.7 F - 20 F (was
1.0 F - 20 F)
• Vdd1p2: bypass capacitor ESR max is 50m (was 10m). Ceramic
capacitor value is 100nF (was 200nF). Deleted sentence stating: " When
switching current load is lower, it is possible to reduce the requirements of the
bypass capacitor to 1 F - 5 F and 100 m ESR."
• MCR register reset value is 0x98000000 (was 0x00000000)
• SR register reset value is "0x03000000 or 0x06000000 (was 0x02000000 or
0x06000000)
• NVUSRO register info added--contains bit used to shutdown 3.3V regulator.
• Changes to MCR register:
* LVRE5 field is now LVRE50
* LVIE5 field is now LVIE50
• Changes to TRIMR register:
* LVI50TRIM is now LVDREGTRIM
* V33TRIM is now VDD33TRIM
* LVI33TRIM is now LVD33TRIM
* V12TRIM is now VDDCTRIM
* LVI12TRIM field is now LVDCTRIM
* Updated VDD33TRIM values
* Updated VDDCTRIM values
* Updated LVDCTRIM values
• Changes to SR register:
* BRW field is now LVFVSTBY
* LVI5C is now LVFC50
* LVI3C is now LVFC33
* LVI1C is now LVFCC
* Updated VDD33TRIM values
MPC5644A Microcontroller Reference Manual, Rev. 6
Changes
Revision history
1709