CAT28C17AKA-20T データシートの表示（PDF） - Catalyst Semiconductor => Onsemi

部品番号

コンポーネント説明

メーカー

CAT28C17AKA-20T

16K-Bit CMOS PARALLEL EEPROM

Catalyst Semiconductor => Onsemi 

CAT28C17A

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 architec-

ture 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 3. Read Cycle

ADDRESS

CE

OE

WE

DATA OUT

tRC

tCE

tOE

VIH

tLZ

HIGH-Z

tOLZ

tOH

DATA VALID

tAA

tOHZ

tHZ

DATA VALID

Figure 4. Byte Write Cycle [WE Controlled]

ADDRESS

CE

tAS

tAH

tCS

tWC

tCH

OE

WE

RDY/BUSY

DATA OUT

tOES

tWP

tOEH

tDL

tDB

HIGH-Z

DATA IN

Doc. No. 1075, Rev. B

DATA VALID

tDS

tDH

6

Share Link: