MC9S12C_10 Datasheet, PDF (677/690 Pages) Freescale Semiconductor, Inc – Reference Manual

A.7 Voltage Regulator
Appendix A Electrical Characteristics
A.7.1 Voltage Regulator Operating Conditions
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
3
P
Output Voltage Core
Full Performance Mode
V_DD
2.35
2.5
2.75
V
Low Voltage Interrupt⁽¹⁾
Assert Level (xL45J mask set)
4
P
Assert Level (other mask sets)
Deassert Level (xL45J mask set)
Deassert Level (other mask sets)
Low Voltage Reset⁽²⁾,⁽³⁾
5
P
Assert Level (xL45J mask set)
Assert Level (other mask sets)
V_LVIA
V_LVIA
V_LVID
V_LVID
V_LVRA
4.30
4.00
4.42
4.15
2.25
2.25
4.53
4.37
4.65
4.52
2.3
2.35
4.77
V
4.66
V
4.89
V
4.77
V
—
V
—
Power-on Reset⁽⁴⁾
7
C
Assert Level
Deassert Level
V_PORA
0.97
—
—
V
V_PORD
—
—
2.05
V
1. Monitors V_DDA, active only in Full Performance Mode. Indicates I/O & ADC performance degradation due to low supply voltage.
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).
4. Monitors V_DD. Active in all modes.
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.
Freescale Semiconductor
MC9S12C-Family / MC9S12GC-Family
677
Rev 01.24