mc68hc908mr24 Freescale Semiconductor, Inc, mc68hc908mr24 Datasheet - Page 352

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

Low-Voltage Inhibit (LVI)
18.4.4 LVI Trip Selection
18.5 LVI Status and Control Register
Advance Information
352
NOTE:
Address:
The TRPSEL bit allows the user to chose between 5 percent and
10 percent tolerance when monitoring the supply voltage. The
10 percent option is enabled out of reset. Writing a logic 1 to TRPSEL
will enable 5 percent option.
The microcontroller is guaranteed to operate at a minimum supply
voltage. The trip point (V
See
The LVI status register (LVISCR) flags V
level
LVIOUT — LVI Output Bit
Reset:
Read: LVIOUT
Write:
This read-only flag becomes set when the V
V
clears the LVIOUT bit.
LVRX
21.6 DC Electrical Characteristics (V
.
Figure 18-3. LVI Status and Control Register (LVISCR)
$FE0F
Bit 7
voltage for 32 to 40 CGMXCLK cycles. See
R
R
0
Low-Voltage Inhibit (LVI)
= Reserved
R
6
0
0
TRPSEL
LVR1
5
0
or V
LVR2
R
4
0
0
) may be lower than this.
DD
R
3
0
0
DD
voltages below the V
DD
MC68HC908MR24
= 5.0 Vdc
voltage falls below the
Freescale Semiconductor
R
2
0
0
Table
R
1
0
0
10%).
18-1. Reset
—
Rev. 4.1
LVRX
Bit 0
R
0
0