参数资料
型号: PUMA2E4001I-20
元件分类: PROM
英文描述: 128K X 32 EEPROM 5V MODULE, 200 ns, CPGA66
封装: CERAMIC, PGA-66
文件页数: 3/15页
文件大小: 361K
代理商: PUMA2E4001I-20
ISSUE 4.2 : November 1998
PUMA 2/67/77E4001/A - 12/15/20
11
Software Data Protect Disable
In the event the user wants to deactivate the software data protection feature for testing or reprogramming in an
E2PROM programmer. The following six step algorithm will reset the internal protection circuit. After t
WC, the device
will be in standard operating mode.
LAST BYTE / WORD
TO
LAST ADDRESS
LOAD DATA XX
TO
ANY ADDRESS
LOAD DATA 20
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 80
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA AA
TO
ADDRESS 5555
(4)
EXIT DATA
PROTECT
STATE
(3)
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