Smart Option - Samsung S3C8275X User Manual

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X

SMART OPTION

ISP reset vector change enable/disable bit:
0 = OBP reset vector address
1 = Normal vector (address 0100H)
ISP reset vector address selection bit:
00 = 200H (ISP area size: 256 byte)
01 = 300H (ISP area size: 512 byte)
10 = 500H (ISP area size: 1024 byte)
11 = 900H (ISP area size: 2048 byte)
NOTES:
1. After selecting ISP reset vector address in selecting ISP protection size, don't select upper than ISP
area size.
2. When any values are written in the Smart Option area (003CH-003FH) by LDC instruction, the data of
the area may be changed but the Smart Option is not affected. The data for Smart Option should be
written in the Smart Option area (003CH-003FH) by OTP/MTP tools (SPW2 plus single
programmer, or GW-PRO2 gang programmer).
ROM Address: 003EH
MSB .7 .6 .5
ROM Address: 003FH
MSB .7 .6 .5
Not used
ROM Address: 003CH
MSB .7 .6 .5
ROM Address: 003DH
MSB .7 .6 .5
Figure 2-2. Smart Option
.4 .3 .2 .1
Not used
ISP protection size selection:
00 = 256 bytes
01 = 512 bytes
10 = 1024 bytes
11 = 2048 bytes
ISP protection enable/disable bit:
0 = Enable (not erasable by LDC)
1 = Disable (erasable by LDC)
.4 .3 .2 .1
These bits should be
always logic "110b".
.4 .3 .2 .1
Not used
.4 .3 .2 .1
Not used
ADDRESS SPACES
.0 LSB
.0 LSB
LVR enable/disable bit
(criteria voltage: 2.2V):
0 = Disable LVR
1 = Enable LVR
.0 LSB
.0 LSB
(note)
2-3