TMS28F004AST datasheet(21/80 Pages) TI1

21 / 80 page

TMS28F004Axy, TMS28F400Axy

524288 BY 8-BIT/

262144 BY 16-BIT

AUTOSELECT BOOT BLOCK FLASH MEMORIES

SMJS829A − JANUARY 1996 − REVISED AUGUST 1997

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251−1443

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†

Supply voltage range, VCC (see Note 4)

− 0.6 V to 7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Supply voltage range, VPP (see Note 4)

− 0.6 V to 14 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage range: All inputs except A9, RP

− 0.6 V to VCC + 1 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RP, A9 (see Note 5)

− 0.6 V to 13.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output voltage range (see Note 6)

− 0.6 V to VCC + 1 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating free-air temperature range, TA, during read/erase/program: L suffix

°C to 70°C

. . . . . . . . . . . . . .

E suffix

− 40

°C to 85°C

. . . . . . . . . . . .

Q suffix

− 40

°C to 125°C

. . . . . . . . . .

Storage temperature range, Tstg

− 65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

4. All voltage values are with respect to VSS.

5. The voltage on any input or output can undershoot to − 2 V for periods less than 20 ns. See Figure 8.

6. The voltage on any input or output can overshoot to 7 V for periods less than 20 ns. See Figure 9.

IOL

IOH

Output

Under

Test

(see Note A)

VIH

VOLTAGE WAVEFORMS

VIL

VOH

VOL

NOTES: A. CL includes probe and fixture capacitance.

B. AC test conditions are driven at VIH and VIL, Timing measurements are made at VOH and VOL levels on both inputs and outputs.

See Table 9 for values based on VCC operating range..

C. Each device must have a 0.1

mF ceramic capacitor connected to VCC and VSS as close as possible to the device pins.

Figure 7. Load Circuit and Voltage Waveforms

Table 9. AC Test Conditions

VCC RANGE

IOL

IOH

VZ†

VOL

VOH

VIL

VIH

5 V

± 10%

2.1

−0.4

1.5

0.8

2.0

0.45

2.4

100

< 10

3.3

± 0.3 V

0.5

−0.5

1.5

0.0

3.0

< 10

2.7 to 3.6 V

0.1

−0.1

1.35

0.0

2.7

< 10

† VZ is the measured value used to detect high impedance.

− 2.0 V

−0.6 V

+0.8 V

5 ns

20 ns

Figure 8. Maximum Negative Overshoot Waveform

TMS28F004AST Datasheet(PDF) 21 Page - Texas Instruments

TMS28F004AST Datasheet(HTML) 21 Page - Texas Instruments

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