M27C512 datasheet(14/22 Pages) STMICROELECTRONICS

14 / 22 page

DC and AC parameters

M27C512

14/22

Figure 7.

Read mode AC waveforms

AI00735B

tAXQX

tEHQZ

A0-A15

Q0-Q7

tAVQV

tGHQZ

tGLQV

tELQV

VALID

Hi-Z

VALID

Table 11.

Programming mode DC characteristics

Symbol

Parameter

Test Condition(1)(2)

Min

Max

Unit

ILI

Input Leakage Current

VIL ≤ VIN ≤ VIH

±10

µA

ICC

Supply Current

IPP

Program Current

E = VIL

VIL

Input Low Voltage

–0.3

0.8

VIH

Input High Voltage

VCC + 0.5

VOL

Output Low Voltage

IOL = 2.1mA

0.4

VOH

Output High Voltage TTL

IOH = –1mA

3.6

VID

A9 Voltage

11.5

12.5

TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12.75V ± 0.25V

VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.

Table 12.

Margin Mode AC Characteristics

Symbol

Alt

Parameter

Test

Condition(1)(2)

Min

Max

Unit

tA9HVPH

tAS9

VA9 High to VPP High

µs

tVPHEL

tVPS

VPP High to Chip Enable Low

µs

tA10HEH

tAS10

VA10 High to Chip Enable High (Set)

µs

tA10LEH

tAS10

VA10 Low to Chip Enable High (Reset)

µs

tEXA10X

tAH10

Chip Enable Transition to VA10

Transition

1µs

tEXVPX

tVPH

Chip Enable Transition to VPP

Transition

2µs

tVPXA9X

tAH9

VPP Transition to VA9 Transition

µs

TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12.75V ± 0.25V

VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.

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