Datasheet

Appendix A Electrical Characteristics
Freescale Semiconductor MC9S12C-Family / MC9S12GC-Family 677
Rev 01.24
A.7 Voltage Regulator
A.7.1 Voltage Regulator Operating Conditions
A.7.2 Chip Power-up and LVI/LVR Graphical Explanation
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 Figure A-10.
Table A-23. Voltage Regulator Electrical Parameters
Num C Characteristic Symbol Min Typ Max Unit
1 P Input Voltages V
VDDR, A
2.97 5.5 V
3P
Output Voltage Core
Full Performance Mode
V
DD
2.35 2.5 2.75 V
4P
Low Voltage Interrupt
(1)
Assert Level (xL45J mask set)
Assert Level (other mask sets)
Deassert Level (xL45J mask set)
Deassert Level (other mask sets)
1. Monitors V
DDA
, active only in Full Performance Mode. Indicates I/O & ADC performance degradation due to low supply voltage.
V
LVIA
V
LVIA
V
LVID
V
LVID
4.30
4.00
4.42
4.15
4.53
4.37
4.65
4.52
4.77
4.66
4.89
4.77
V
V
V
V
5P
Low Voltage Reset
(2)
,
(3)
Assert Level (xL45J mask set)
Assert Level (other mask sets)
2. Monitors V
DD
, active only in Full Performance Mode. MCU is monitored by the POR in RPM (see Figure A-10)
3. Digital functionality is guaranteed in the range between V
DD
(min) and V
LVRA
(min).
V
LVRA
2.25
2.25
2.3
2.35
V
7C
Power-on Reset
(4)
Assert Level
Deassert Level
4. Monitors V
DD
. Active in all modes.
V
PORA
V
PORD
0.97
2.05
V
V