MCF51QM128VHS FREESCALE [Freescale Semiconductor, Inc], MCF51QM128VHS Datasheet - Page 11

• Manufacturer Part Number: MCF51QM128VHS
• Description: MCF51QM128
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

5.2.2 LVD and POR operating requirements
1. Rising thresholds are falling threshold + hysteresis voltage
Freescale Semiconductor, Inc.
Symbol
V
V
V
V
V
V
V
V
V
V
V
V
V
LVW1H
LVW2H
LVW3H
LVW4H
LVW1L
LVW2L
LVW3L
LVW4L
V
t
HYSH
LVDH
HYSL
LVDL
LPO
POR
BG
Falling VDD POR detect voltage
Falling low-voltage detect threshold — high
range (LVDV=01)
Low-voltage warning thresholds — high range
Low-voltage inhibit reset/recover hysteresis —
high range
Falling low-voltage detect threshold — low range
(LVDV=00)
Low-voltage warning thresholds — low range
Low-voltage inhibit reset/recover hysteresis —
low range
Bandgap voltage reference
Internal low power oscillator period
factory trimmed
Description
• Level 1 falling (LVWV=00)
• Level 2 falling (LVWV=01)
• Level 3 falling (LVWV=10)
• Level 4 falling (LVWV=11)
• Level 1 falling (LVWV=00)
• Level 2 falling (LVWV=01)
• Level 3 falling (LVWV=10)
• Level 4 falling (LVWV=11)
Table 2. LVD and POR operating requirements
MCF51QM128 Data Sheet, Rev. 6, 01/2012.
2.48
2.62
2.72
2.82
2.92
1.54
1.74
1.84
1.94
2.04
0.97
Min.
900
0.8
—
—
1000
2.56
2.70
2.80
2.90
3.00
1.60
1.80
1.90
2.00
2.10
1.00
Typ.
±80
±60
1.1
Nonswitching electrical specifications
1100
Max.
2.64
2.78
2.88
2.98
3.08
1.66
1.86
1.96
2.06
2.16
1.03
1.5
—
—
Unit
mV
mV
μs
V
V
V
V
V
V
V
V
V
V
V
V
Notes
1
1
11