MPC5744P datasheet(89/114 Pages) FREESCALE

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Electrical characteristics

MPC5744P Data Sheet, Rev. 0.3

Preliminary—Subject to Change Without Notice

Freescale Semiconductor

Figure 19. Noise filtering on reset signal

Table 38. Reset (EXT_POR, RESET) electrical characteristics

Symbol

Parameter

Conditions1

Value2

Unit

Min

Typ

Max

VIH

SR — Input high level TTL

(Schmitt Trigger)

—

2.0

—

VDD_HV_IOx

+0.4

VIL

SR — Input low level TTL

(Schmitt Trigger)

—

–0.4

—

0.8

VHYS

CC C Input hysteresis TTL

(Schmitt Trigger)

—300

—

IOL_R

CC P Strong pull-down current

Device under power-on reset

VDD_HV_IO =1.0 V,

VOL = 0.35*VDD_HV_IO

0.2

—

Device under power-on reset

VDD_HV_IO =3.0 V,

VOL = 0.35*VDD_HV_IO

—

WFRST SR P (EXT_POR, RESET)-input filtered

pulse

——

—

WNFRST SR P (EXT_POR, RESET)-input not

filtered pulse

—100

—

|IWPU|

CC P Weak pull-up current absolute value

RESET_B pin

VIN = 0 V

—

µA

|IWPD|

CC P Weak pull-down current absolute

value

EXT_POR pin

VIN = VDD_HV_IOx

—

µA

VEXT_POR

VIL

VIH

VDD_HV_IO

filtered by

hysteresis

filtered by

lowpass filter

WFRST

WNFRST

hw_rst

‘1’

‘0’

filtered by

lowpass filter

WFRST

unknown reset

state

device under hardware reset

MPC5744P Datasheet(PDF) 89 Page - Freescale Semiconductor, Inc

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