MCF51JF128 查看數據表（PDF） - Freescale Semiconductor

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MCF51JF128

Embedded - Microcontrollers

Freescale Semiconductor 

Nonswitching electrical specifications

5.2.2 LVD and POR operating requirements

Table 2. LVD and POR operating requirements

Symbol

VPOR

VLVDH

VLVW1H

VLVW2H

VLVW3H

VLVW4H

VHYSH

VLVDL

VLVW1L

VLVW2L

VLVW3L

VLVW4L

VHYSL

VBG

tLPO

Description

Falling VDD POR detect voltage

Falling low-voltage detect threshold — high

range (LVDV=01)

Low-voltage warning thresholds — high range

• Level 1 falling (LVWV=00)

• Level 2 falling (LVWV=01)

• Level 3 falling (LVWV=10)

• Level 4 falling (LVWV=11)

Low-voltage inhibit reset/recover hysteresis —

high range

Falling low-voltage detect threshold — low range

(LVDV=00)

Low-voltage warning thresholds — low range

• Level 1 falling (LVWV=00)

• Level 2 falling (LVWV=01)

• Level 3 falling (LVWV=10)

• Level 4 falling (LVWV=11)

Low-voltage inhibit reset/recover hysteresis —

low range

Bandgap voltage reference

Internal low power oscillator period

factory trimmed

Min.

0.8

2.48

2.62

2.72

2.82

2.92

—

1.54

1.74

1.84

1.94

2.04

—

0.97

900

Typ.

1.1

2.56

2.70

2.80

2.90

3.00

±80

1.60

1.80

1.90

2.00

2.10

±60

1.00

1000

Max.

1.5

2.64

2.78

2.88

2.98

3.08

—

1.66

1.86

1.96

2.06

2.16

—

1.03

1100

1. Rising thresholds are falling threshold + hysteresis voltage

Unit

Notes

V

V

1

V

V

V

V

mV

V

1

V

V

V

V

mV

V

μs

MCF51JF128 Data Sheet, Rev. 6, 01/2012.

Freescale Semiconductor, Inc.

11

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