S3F80P5_UM_ REV1.00 EMBEDDED FLASH MEMORY INTERFACE
SECTOR ERASE
User can erase a flash memory partially by using sector erase function only in user program mode. The only unit
of flash memory to be erased in the user program mode is a sector.
The program memory of S3F80P5, 18Kbytes flash memory, is divided into 144 sectors. Every sector has all 128-
byte sizes. So the sector to be located destination address should be erased first to program a new data (one
byte) into flash memory. Minimum 10ms’ delay time for the erase is required after setting sector address and
triggering erase start bit (FMCON.0). Sector erase is not supported in tool program modes (MDS mode tool or
programming tool).
Sector 0-9
(128 byte x10 )
Sector 143
(128 byte)
Sector 142
(128 byte)
Sector 11
(128 byte)
Sector 10
(128 byte)
04FFH
0000H
0500H
057FH
05FFH
477FH
3EFFH
47FFH
Figure 14-7. Sector Configurations in User Program Mode
14-7