mc9s12hz256v2 Freescale Semiconductor, Inc, mc9s12hz256v2 Datasheet - Page 639

• Manufacturer Part Number: mc9s12hz256v2
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

A.4
A.4.1
A.4.2
The 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
Freescale Semiconductor
1
2
3
4
5
Conditions are shown in
Num
A-2.
High Impedance Output
High Impedance Output
Monitors V
supply voltage.
Monitors V
Monitors V
1
2
3
4
7
8
9
Voltage Regulator
Operating Conditions
Chip Power-up and Voltage Drops
C
C
P
P
P
P
P
P
DDA
DD
DD
, active only in Full Performance Mode. MCU is monitored by the POR in RPM (see
. Active in all modes.
, active only in Full Performance Mode. Indicates I/O & ADC performance degradation due to low
Input Voltages
Regulator Current
Output Voltage Core
Output Voltage PLL
Low Voltage Interrupt
Low Voltage Reset
Power-on Reset
Shutdown Mode
Full Performance Mode
Shutdown Mode
Full Performance Mode
Shutdown Mode
Assert Level
Deassert Level
Assert Level
Assert Level
Deassert Level
Table A-13. Voltage Regulator - Operating Conditions
Table A-4
Characteristic
5
unless otherwise noted
MC9S12HZ256 Data Sheet, Rev. 2.05
4
3
V
Symbol
V
V
V
V
VDDR,A
V
V
I
V
DDPLL
PORA
PORD
REG
LVRA
LVIA
LVID
DD
2.35
2.35
4.15
2.25
0.97
Min
4.5
4.0
—
—
—
—
Typical
4.37
4.52
—
—
2.5
2.5
Appendix A Electrical Characteristics
12
—
—
—
—
1
2
Max
2.75
2.75
4.66
4.77
2.05
5.5
40
—
—
—
—
Figure
A-2)
Unit
V
V
V
V
V
V
V
V
V
V
A
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