TMS28F008AST datasheet(30/52 Pages) TI1

30 / 52 page

TMS28F008Axy,TMS28F800Axy

1048576 BY 8BIT/524288 BY 16BIT

AUTOSELECT BOOT BLOCK FLASH MEMORIES

SMJS851A − NOVEMBER 1997 − REVISED FEBRUARY 1998

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251−1443

power-up and reset switching characteristics for TMS28F008ASy or ’AEy and TMS28F800ASy or

’AEy over recommended ranges of supply voltage (commercial and extended temperature ranges)

(see Notes 10, 11, and 12)

PARAMETER

ALT.

SYMBOL

’28F008AEy 70

’28F800AEy 70

’28F008ASy 70

’28F800ASy 70

’28F008AEy 80

’28F800AEy 80

’28F008ASy 80

’28F800ASy 80

UNIT

PARAMETER

ALT.

SYMBOL

3 V/3.3-V VCC

RANGE

5-V VCC

RANGE

3 V/3.3-V VCC

RANGE

5-V VCC

RANGE

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

tsu(VCC)

Setup time, RP low to VCC at

3 V MIN or 3.6 V MAX)

(see Note 13)

tPL5V

tPL3V

ta(DV)

Address valid to data valid

tAVQV

100

120

tsu(DV)

Setup time, RP high to data

valid

tPHQV

800

450

800

450

th(RP5)

Hold time, VCC at 4.5 V (MIN)

to RP high

t5VPH

µs

th(RP3)

Hold time, VCC at 3 V (MIN) to

RP high

t3VPH

µs

NOTES: 10. Characterization data available

11. All ac current values are RMS unless otherwise noted.

12. E and G are switched low after power up.

13. The power supply can switch low concurrently with RP going low.

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