mc68hc908mr24 Freescale Semiconductor, Inc, mc68hc908mr24 Datasheet - Page 353

• Manufacturer Part Number: mc68hc908mr24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

18.6 LVI Interrupts
MC68HC908MR24 — Rev. 4.1
Freescale Semiconductor
NOTE:
TRPSEL — LVI Trip Select Bit
If LVIRST and LVIPWR are at logic 0, note that when changing the
tolerence, LVI reset will be generated if the supply voltage is below the
trip point.
The LVI module does not generate interrupt requests.
V
This bit selects the LVI trip point. Reset clears this bit.
LVRX
V
1 = 5 percent tolerance. The trip point and recovery point are
0 = 10 percent tolerance. The trip point and recovery point are
DD
V
V
V
V
> V
determined by V
determined by V
DD
At Level:
DD
DD
DD
LVRX
Low-Voltage Inhibit (LVI)
V
V
V
V
LVRX
LVRX
LVRX
LVRX
+ V
Table 18-1. LVIOUT Bit Indication
LVHX
+ V
LVHX
LVR1
LVR2
V
Between 32 & 40 CGMXCLK cycles
DD
and V
and V
< 32 CGMXCLK cycles
> 40 CGMXCLK cycles
CGMXCLK Cycles:
LVH1
LVH2
For Number of
, respectively.
, respectively.
Any
Any
Low-Voltage Inhibit (LVI)
Advance Information
Previous
LVIOUT
0 or 1
value
0
0
1
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