Voltage Regulator Controller (VRC) and POR Module
MPC5565 Microcontroller Reference Manual, Rev. 1.0
22-8
Freescale Semiconductor
22.6
Document Revision History
Table 22-3. Changes Between MPC5565RM Revisions 0.1 and 1
Added the sentence “VRCVSS is connected internally to VDDSYN” to the signal description section and as a footnote in
Table 1.
In Section 22.5.1, “Voltage Regulator Example,” in
titled “Voltage Regulator Controller Hookup” made this change:
• From: “Refer to Engineering Bulletin EB641 for the size of the resistor.”: Power Supplies on the MPC5500.
• To: “Refer to Application Note AN3254 for the size of the resistor.”
Also in the Note below that, changed it to “See Application Note AN3254.”
In Section 22.5.2, “Compatible Power Transistors” made this change:
• From: “Freescale recommends the use of the following NPN transistors with the on-chip Voltage Regulator Controller: ON
Semiconductor
TM
BCP68T1 and Phillips Semiconductor
TM
BCP68. “
• To: “Freescale recommends the use of the following NPN transistors with the on-chip Voltage Regulator Controller: ON
Semiconductor
TM
NJD2873 and Phillips Semiconductor
TM
BCP68.“
In Section 22.4.2, “POR Circuits”, in the first sentence,
• FROM: “individual POR circuits will negate whenever “
• TO: “individual POR circuits will assert whenever “and
In paragraph two of Section 22.4.2, “POR Circuits” changed in this way:
• FROM: “Power-on reset will assert as soon as possible after the voltage levels of the POR power supplies begin to rise.
Each POR will negate before its power supply rises into its specified range. Each POR will also assert after its power supply
drops below its specified range. The behavior for each POR during power supply ramping is shown in Figure 22-2.”
• TO:” Power-on reset will assert as soon as possible after the voltage level of the POR power supplies begins to rise. Each
POR will negate before its power supply rises into its specified range. Power-on reset will remain asserted until all of the
POR supplies have risen above the maximum POR threshold. Each POR will assert after its power supply drops below its
specified range. The behavior for each POR during power sequencing is shown in Figure 22-2. “
Section 22.2, “External Signal Description,” incorporated the detailed signal descriptions in Table 22-1 “Voltage Regulator
Control and POR Block External Signals.”
Содержание MPC5565
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