XC68HC05P18A Motorola, XC68HC05P18A Datasheet - Page 48

• Manufacturer Part Number: XC68HC05P18A
• Description: HCMOS Microcontroller Unit
• Manufacturer: Motorola

Resets
5.4.3 Low-Voltage Reset (LVR)
Technical Data
48
The internal LVR reset is generated when the supply voltage to the V
pin falls below a nominal 3.80 Vdc. The LVR threshold is not intended to
be an accurate and stable trip point, but is intended to assure that the
CPU is held in reset when the V
operating limits. If the LVR is tripped for a short time, the LVR reset
signal will last at least two cycles of the CPU bus clock, PH2. A mask
option is provided to disable the LVR.
The LVR generates the RST signal, which resets the CPU and other
peripherals. If any other reset function is active at the end of the LVR
reset signal, the RST signal remains in the reset condition until the other
reset condition(s) end.
Resets
DD
supply voltage is below reasonable
MC68HC05P18A
MOTOROLA
DD