EMBEDDED FLASH MEMORY INTERFACE

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.

MSB

MSB

MSB

ROM Address: 003CH

.7

.6

.5

.4

.3

.2

.1

.0

LSB

 

 

 

 

 

 

 

 

 

Not used

ROM Address: 003DH

.7

.6

.5

.4

.3

.2

.1

.0

LSB

 

 

 

 

 

 

 

 

 

Not used

ROM Address: 003EH

.7

.6

.5

.4

.3

.2

.1

.0

LSB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ISP Reset Vector Change Selection

 

Bit:(Note1)

 

Not

 

used

 

 

0

= OBP Reset vector address

 

 

 

 

1

= Normal vector (address 100H)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ISP Reset Vector Address Selection Bits:(Note2)

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)

ROM Address: 003FH

ISP Protection Size Selection Bits:(Note4) 00 = 256 bytes

01 = 512 bytes

10 = 1024 bytes

11 = 2048 bytes

ISP Protection Enable/Disable Bit:(Note3) 0 = Enable (Not erasable)

1 = Disable (Erasable)

MSB

.7

.6

.5

.4

.3

.2

.1

.0 LSB

Reserved

IPOR / LVD Control Bit 0 = IPOR enable

Not used

LVD disable in the stop mode 1 = IPOR disable

LVD enable in the stop mode

Figure 15-2. Smart Option

15-4

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Image 283
Samsung S3F80JB manual 15-4