M48Z02 datasheet(7/12 Pages) STMICROELECTRONICS

7 / 12 page

Symbol

Parameter

M48Z02 / M48Z12

Unit

-70

-150

-200

Min

Max

Min

Max

Min

Max

tAVAV

Write Cycle Time

150

200

tAVWL

Address Valid to Write Enable Low

tAVEL

Address Valid to Chip Enable Low

tWLWH

Write Enable Pulse Width

120

tELEH

Chip Enable Low to Chip Enable High

120

tWHAX

Write Enable High to Address Transition

tEHAX

Chip Enable High to Address Transition

tDVWH

Input Valid to Write Enable High

tDVEH

Input Valid to Chip Enable High

tWHDX

Write Enable High to Input Transition

tEHDX

Chip Enable High to Input Transition

tWLQZ

Write Enable Low to Output Hi-Z

tAVWH

Address Valid to Write Enable High

120

140

tAVEH

Address Valid to Chip Enable High

120

140

tWHQX

Write Enable High to Output Transition

Table 10. Write Mode AC Characteristics

(TA = 0 to 70

°C or –40 to 85°C; VCC = 4.75V to 5.5V or 4.5V to 5.5V)

WRITE MODE

The M48Z02/12 is in the Write Mode whenever W

and E are active. The start of a write is referenced

from the latter occurring falling edge of W or E. A

write is terminated by the earlier rising edge of W

or E. The addresses must be held valid throughout

the cycle. E or W must return high for a minimum

of tEHAX from Chip Enable or tWHAX from Write

Enable prior to the initiation of another read or write

cycle. Data-in must be valid tDVWH prior to the end

of write and remain valid for tWHDX afterward. G

should be kept high during write cycles to avoid bus

contention; although, if the output bus has been

activated by a low on E and G, a low on W will

disable the outputs tWLQZ after W falls.

7/12

M48Z02, M48Z12

M48Z02 数据表(PDF) 7 Page - STMicroelectronics

M48Z02 数据表(HTML) 7 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12

数据表下载