we128k8-300cqa White Electronic Designs Corporation, we128k8-300cqa Datasheet - Page 10

• Manufacturer Part Number: we128k8-300cqa
• Description: 512kx8 Cmos Eeprom, We512k8-xcx, 5962-93091
• Manufacturer: White Electronic Designs Corporation

White Electronic Designs Corp. reserves the right to change products or specifi cations without notice.
May 2000
Rev. 1
NOTES:
1. Data Format: I/O
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
Address Format: A
A
A
A
at each of 8 blocks may be loaded in the 256Kx8 and 1 to 64 bytes on 4 blocks in the 128Kx8.
17
15
15
, A
and A
and A
16
, and A
18
16
FIGURE 10 – SOFTWARE BLOCK DATA PROTECTION ENABLE ALGORITHM
control selection of one of four blocks in the 512Kx8.
control one of the four blocks in the 128Kx8.
White Electronic Designs
17
control selection of one of 8 pages in the 256Kx8.
7-0
14
(Hex);
-A
0
(Hex).
LOAD LAST BYTE
ANY ADDRESS
ADDRESS 2AAA
LAST ADDRESS
ADDRESS 5555
ADDRESS 5555
LOAD DATA AA
LOAD DATA XX
LOAD DATA 55
LOAD DATA A0
TO
TO
TO
TO
TO
(4)
ENTER DATA
PROTECT STATE
(1)
WRITES ENABLED
10
White Electronic Designs Corporation • [phone] • www.wedc.com
(2)
WE512K8, WE256K8,
WE128K8-XCX