M41ST87W

DC and AC parameters

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Figure 28: Power down/up mode AC waveforms

1.

E̅

CON available in the SOX28 package only.

Table 21: Power down/up AC characteristics

Symbol

Parameter

(1)

Min

Typ

Max

Unit

tF

(2)

VPFD(max) to VPFD(min) VCC fall time

300

µs

tFB

(3)

VPFD(min) to VSS VCC fall time

10

µs

tPD

EXatVIHbeforepowerdown

0

µs

tPFD

PFI to

PFOpropagationdelay

15

25

µs

tR

VPFD(min) to VPFD(max) VCC rise time

10

µs

tRB

VSS to VPFD(min) VCC rise time

1

µs

trec

Power-up deselect time

96

98

(4)

ms

Notes:

(1)

Valid for ambient operating temperature: TA = –40 to 85 °C; VCC = 4.5 to 5.5 V or 2.7 to 3.6 V (except where noted).

(2)

VPFD(max) to VPFD(min) fall time of less than tF may result in deselection/write protection not occurring until 200 µs after VCC

passes VPFD(min).

(3)

VPFD(min) to VSS fall time of less than tFB may cause corruption of RAM data.

(4)

Programmable (see

Table 13: "trec definitions")

VCC

INPUTS

(PER CONTRO L INPUT)

OUTPUTS

DON'T CARE

HIGH-Z

t F

t FB

t R

tPD

t RB

VALID

VALID

(PER CONTRO L INPUT)

RECOGNIZED

RECOGNIZED

VPFD (max)

VPFD (min)

VSO

t rec

RST

ECON

(1)

PFO

VALID

VALID