M40Z300 datasheet(14/21 Pages) STMICROELECTRONICS

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M40Z300, M40Z300W

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Table 7. Power Down/Up Mode AC Characteristics

Note: 1. Valid for Ambient Operating Temperature: TA = 0 to 70°C or –40 to 85°C; VCC = 2.7 to 3.6V or 4.5 to 5.5V(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. tREC (min) = 20ms for industrial temperature Grade 6 device.

Symbol

Parameter(1)

Min

Max

Unit

(2)

VPFD (max) to VPFD (min) VCC Fall Time

300

µs

tFB

(3)

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)

VPFD (max) to RST High

120

tWPT

Write Protect Time

M40Z300

150

µs

M40Z300W

250

µs

tRB

VSS to VPFD (min) VCC Rise Time

1µs

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