EM564161BC-70E 参数 Datasheet PDF下载

EtronTech

Write Cycle4

(UB#, LB# Controlled)(See Note 4)

tW C

EM564161

Addres s

t AS

tWP

tW R

W E#

t CW

CE1#

CE2

t CW

t BW

UB# , LB#

t BLZ

t W HZ

DO UT

t LZ

t DS

t DH

DIN

(See Note 5)

VALID DATA IN

Note:

1. WE# remains HIGH for the read cycle.

2. If CE1# goes LOW (or CE2 goes HIGH) with or after WE# goes LOW, the outputs will remain at high

impedance.

3. If CE1# goes HIGH (or CE2 goes LOW) coincident with or before WE# goes HIGH, the outputs will remain

at high impedance.

4. If OE# is HIGH during the write cycle, the outputs will remain at high impedance.

5. Because I/O signals may be in the output state at this time, input signals of reverse polarity must not be

applied.

11

Rev 3.1

Apr. 2004