CAT28C17API-20T datasheet(6/12 Pages) ONSEMI

tên linh kiện	CAT28C17API-20T

Giải thích chi tiết về linh kiện	16 kb CMOS Parallel EEPROM

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CAT28C17A

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DEVICE OPERATION

Read

Data stored in the CAT28C17A is transferred to the data

bus when WE is held high, and both OE and CE are held low.

The data bus is set to a high impedance state when either CE

or OE goes high. This 2−line control architecture can be used

to eliminate bus contention in a system environment.

Ready/BUSY (RDY/BUSY)

The RDY/BUSY pin is an open drain output which

indicates device status during programming. It is pulled low

during the write cycle and released at the end of

programming. Several devices may be OR−tied to the same

RDY/BUSY line.

Figure 4. Read Cycle

ADDRESS

DATA OUT

DATA VALID

HIGH−Z

tOHZ

tHZ

tAA

tOH

tOE

tOLZ

tCE

tLZ

tRC

VIH

ADDRESS

DATA VALID

HIGH−Z

Figure 5. Byte Write Cycle [WE Controlled]

RDY/BUSY

DATA OUT

DATA IN

tDL

tDB

tOEH

tWP

tCH

tDH

tDS

tWC

tCS

tAH

tAS

tOES

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