WE512K8-250CCA データシートの表示（PDF） - White Electronic Designs => Micro Semi

部品番号

コンポーネント説明

メーカー

WE512K8-250CCA

512Kx8 BIT CMOS EEPROM MODULE

White Electronic Designs => Micro Semi 

White Electronic Designs

WE512K8, WE256K8,

WE128K8-XCX

FIGURE 10 – SOFTWARE BLOCK DATA PROTECTION ENABLE ALGORITHM

LOAD DATA AA (1)

TO

ADDRESS 5555

LOAD DATA 55

TO

ADDRESS 2AAA

LOAD DATA A0

TO

ADDRESS 5555

LOAD DATA XX

TO

ANY ADDRESS(4)

WRITES ENABLED(2)

LOAD LAST BYTE ENTER DATA

TO

LAST ADDRESS PROTECT STATE

NOTES:

1. Data Format: I/O7-0 (Hex);

Address Format: A14 -A0 (Hex).

A17 and A18 control selection of one of four blocks in the 512Kx8.

A15, A16, and A17 control selection of one of 8 pages in the 256Kx8.

A15 and A16 control one of the four blocks in the 128Kx8.

2. Write Protect state will be activated at end of write even if no other data is loaded.

3. Write Protect state will be deactivated at end of write period even if no other data is loaded.

4. 1 to 128 bytes of data at each of 4 blocks may be loaded in the 512Kx8. 1 to 64 bytes of data

at each of 8 blocks may be loaded in the 256Kx8 and 1 to 64 bytes on 4 blocks in the 128Kx8.

White Electronic Designs Corp. reserves the right to change products or specifications without notice.

May 2000

Rev. 1

10

White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

Share Link: