Smart Option - Samsung S3F80JB User Manual

S3F80JB

SMART OPTION

Smart option is the program memory option for starting condition of the chip. The program memory addresses
used by smart option are from 003CH to 003FH. The S3F80JB only use 003EH and 003FH. User can write any
value in the not used addresses (003CH and 003DH). The default value of smart option bits in program memory is
0FFH (IPOR disable, LVD enable in the stop mode, Normal reset vector address 100H, ISP protection disable).
Before execution the program memory code, user can set the smart option bits according to the hardware option
for user to want to select.
ISP Reset Vector Change Selection Bit:
0 = OBP Reset vector address
1 = Normal vector (address 100H)
ISP Reset Vector Address Selection Bits:
00 = 200H (ISP Area size: 256 bytes)
01 = 300H (ISP Area size: 512 bytes)
10 = 500H (ISP Area size: 1024 bytes)
11 = 900H (ISP Area size: 2048 bytes)
IPOR / LVD Control Bit
0 = IPOR enable
LVD disable in the stop mode
1 = IPOR disable
LVD enable in the stop mode
ROM Address: 003CH
MSB .7 .6 .5
ROM Address: 003DH
MSB .7 .6 .5
ROM Address: 003EH
MSB .7 .6 .5
(1)
ROM Address: 003FH
MSB .7 .6 .5
Frequency Selection Bits
Operating Frequency Range
111110 = 1MHz ~ 4MHz
11111 = 1MHz ~ 8MHz
(5)
(6)
Figure 2-2. Smart Option
.4 .3 .2 .1
Not used
.4 .3 .2 .1
Not used
.4 .3 .2 .1
Not used
(2)
ISP Protection Enable/Disable Bit:
0 = Enable (Not erasable)
1 = Disable (Erasable)
.4 .3 .2 .1
Not used
(7)
:
ADDRESS SPACES
.0 LSB
.0 LSB
.0 LSB
ISP Protection Size
(4)
Selection Bits:
00 = 256 bytes
01 = 512 bytes
10 = 1024 bytes
11 = 2048 bytes
.0 LSB
(3)
2-3