Avoid Inadvertent Data Lost from IAP/ISP
If the user invoke ISP/IAP function in own application, it is possible the MCU inadvertently
jumps to those ISP/IAP statements while the power supply drops under specific level. The
ISP/IAP statements could destroy the flash content.
To avoid the MCU inadvertently jumps to IAP/ISP instructions while the voltage falls under a
specific level on power-up and power-off moment, it is strongly suggested that the user
enables the Low-Voltage-Reset function by clearing bit
ENLVR
(OR0.6) to makes this device
never work under Low-Voltage.
Also the user should make great use of
LVF
(PCON.5) and
ENLVFI
(AUXR.2) to detect the
voltage dropping.
64
MPC82x54A Data Sheet
MEGAWIN
MEGAWIN [ MEGAWIN TECHNOLOGY CO., LTD ]
