A96G140/A96G148/A96A148 User’s manual
19. Memory programming
247
19.5
Security
A96G140/A96G148/A96A148 provides Lock bits which can be left un-
programmed (“0”) or can be
programmed (“1”) to obtain the addition
al features listed in table 47. The Lock bit can only be erased to
“0” with the bulk erase command and a value of more than 0x40 at FETCR.
Table 48. Security Policy using Lock Bits
LOCK
MODE
USER MODE
ISP MODE
FLASH
OTP
FLASH
OTP
LOCKF
R
W
PE BE R
W
PE BE R
W
PE BE R
W
PE BE
0
O
O
O
X
X
X
X
X
O
O
O
O
O
O
O
O
1
O
O
O
X
X
X
X
X
X
X
X
O
O
X
X
O
NOTES
:
1.
LOCKF: Lock bit of Flash memory
2.
R: Read
3.
W: Write
4.
PE: Page erase
5.
BE: Bulk Erase
6.
O: Operation is possible.
7.
X: Operation is impossible.
19.6
Configure option
For the configure option control, corresponding data should be written in the configure option area
(003EH to 003FH) by programmer (writer tools).
