MC9S12E32CFU FREESCALE [Freescale Semiconductor, Inc], MC9S12E32CFU Datasheet - Page 573
MC9S12E32CFU
Manufacturer Part Number
MC9S12E32CFU
Description
HCS12 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC9S12E32CFU.pdf
(606 pages)
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A.2.1
Voltage regulator sub modules LVI (low voltage interrupt), POR (power-on reset) and LVR (low voltage
reset) handle chip power-up or drops of the supply voltage. Their function is described in
A.2.2
A.2.2.1
The on-chip voltage regulator is intended to supply the internal logic and oscillator circuits allows no
external DC loads.
A.2.2.2
The capacitive loads are specified in
Freescale Semiconductor
Num
1
2
V
PORD
LVI
LVR
V
POR
V
V
DD
DDPLL
Chip Power-up and LVI/LVR Graphical Explanation
Output Loads
external capacitive load
Figure A-1. Voltage Regulator — Chip Power-up and Voltage Drops (not scaled)
Resistive Loads
Capacitive Loads
external capacitive load
V
V
V
V
LVID
LVIA
LVRD
LVRA
Characteristic
Table A-10. Voltage Regulator — Capacitive Loads
Table
MC9S12E128 Data Sheet, Rev. 1.07
A-10. Ceramic capacitors with X7R dielectricum are required.
V
DDA
C
Symbol
C
DDPLLext
DDext
LVI enabled
Min
200
90
Appendix A Electrical Characteristics
Typical
LVI disabled due to LVR
440
220
12000
Figure
5000
Max
V
DD
t
A-1.
Unit
nF
nF
573
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