M48T02 datasheet(8/24 Pages) STMICROELECTRONICS

8 / 24 page

Operation modes

M48T02, M48T12

8/24

The state of the eight three-state Data I/O signals is controlled by E and G. If the outputs are

activated before tAVQV, the data lines will be driven to an indeterminate state until tAVQV. If

the Address Inputs are changed while E and G remain active, output data will remain valid

for Output Data Hold time (tAXQX) but will go indeterminate until the next Address Access.

Figure 4.

Read mode AC waveforms

Note:

WRITE Enable (W) = High.

Table 3.

Read mode AC characteristics

Symbol

Parameter(1)

Valid for Ambient Operating Temperature: TA = 0 to 70°C; VCC = 4.75 to 5.5V or 4.5 to 5.5V (except where noted).

M48T02/M48T12

Unit

–70

–150

–200

Min

Max

Min

Max

Min

Max

tAVAV

READ Cycle Time

150

200

tAVQV

Address Valid to Output Valid

150

200

tELQV

Chip Enable Low to Output Valid

150

200

tGLQV

Output Enable Low to Output Valid

tELQX

Chip Enable Low to Output Transition

tGLQX

Output Enable Low to Output Transition

tEHQZ

Chip Enable High to Output Hi-Z

tGHQZ

Output Enable High to Output Hi-Z

tAXQX

Address Transition to Output Transition

AI01330

tAVAV

tAVQV

tAXQX

tELQV

tELQX

tEHQZ

tGLQV

tGLQX

tGHQZ

VALID

A0-A10

DQ0-DQ7

VALID

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