NXP Semiconductors MC9S12G - A.13 Chip Power-Up and Voltage Drops

Electrical Characteristics
MC9S12G Family Reference Manual Rev.1.27
NXP Semiconductors 1225
NOTE
The LVR monitors the voltages V
DD
, V
DDF
and V
DDX
. As soon as voltage
drops on these supplies which would prohibit the correct function of the
microcontroller, the LVR is triggering a reset.
A.13 Chip Power-up and Voltage Drops
LVI (low voltage interrupt), POR (power-on reset) and LVRs (low voltage reset) handle chip power-up or
drops of the supply voltage.
Figure A-6. Chip Power-up and Voltage Drops
V
LVID
V
LVIA
V
LVRD
V
LVRA
V
PORD
LVI
POR
LVR
t
V
V
DDA
/V
DDX
V
DD
LVI enabled LVI disabled due to LVR