MC9S12E Motorola, MC9S12E Datasheet - Page 118

• Manufacturer Part Number: MC9S12E
• Description: MC9S12E-Family Device User Guide V01.04
• Manufacturer: Motorola

Device User Guide — 9S12E128DGV1/D V01.04
B.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 B-1.
B.3 Output Loads
B.3.1 Resistive Loads
The on-chip voltage regulator is intended to supply the internal logic and oscillator circuits allows no
external DC loads.
118
V
PORD
Figure B-1 Voltage Regulator - Chip Power-up and Voltage Drops (not scaled)
LVI
LVR
V
POR
V
V
V
V
LVID
LVIA
LVRD
LVRA
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
V
DDA
LVI enabled
LVI disabled due to LVR
V
DD
t