M48T559 Просмотр технического описания (PDF) - STMicroelectronics

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M48T559

64 Kbit (8Kb x8) TIMEKEEPER® SRAM with ADDRESS/DATA MULTIPLEXED

STMicroelectronics 

Figure 6. Read Mode AC Waveforms

M48T559Y

E

AS0

AS1

R

AD0-AD7

tASLASH

tELEH

tELRL

tEHDZ

tASLASH

tASHRL

tRLRH

tAS

tAH

LOW ADDRESS VALID

tRLDV

tAS

tAH

UPPER ADDRESS VALID

DATA OUT

VALID

tRHDZ

AI01671B

Note: AD5-AD7 are don’t care when latching upper address.

Figure 7. Write Mode AC Waveform

E

AS0

AS1

W

AD0-AD7

tASLASH

tELEH

tELWL

tEHDZ

tASLASH

tASHWL

tWLWH

tAS

tAH

LOW ADDRESS VALID

tAS

tAH

UPPER ADDRESS VALID

tDS

tDH

DATA IN VALID

AI01672B

Note: AD5-AD7 are don’t care when latching upper address.

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