M40Z300 datasheet(17/25 Pages) STMICROELECTRONICS

17 / 25 page

M40Z300, M40Z300W

DC and AC parameters

Doc ID 5679 Rev 5

17/25

Table 7.

Power down/up mode AC characteristics

Symbol

Parameter(1)

Valid for ambient operating temperature: TA = 0 to 70 °C or –40 to 8 5°C; VCC = 2.7 to 3.6 V or 4.5 to

5.5 V(except where noted).

Min

Max

Unit

(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).

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

300

µs

tFB

(3)

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

VPFD (min) to VSS VCC fall time

M40Z300

µs

M40Z300W

150

µs

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

µs

tEDL

Chip enable propagation delay low

M40Z300

M40Z300W

tEDH

Chip enable propagation delay high

M40Z300

M40Z300W

tAS

A, B set up to E

0ns

tCER

Chip enable recovery

120

tREC

(4)

tREC (min) = 20ms for industrial temperature Grade 6 device.

VPFD (max) to RST high

120

tWPT

Write protect time

M40Z300

150

µs

M40Z300W

250

µs

tRB

VSS to VPFD (min) VCC rise time

µs

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