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S3F80JB EMBEDDED FLASH MEMORY INTERFACE
15-1
15 EMBEDDED FLASH MEMORY INTERFACE
OVERVIEW
The S3F80JB has an on-chip flash memory internally instead of masked ROM. The flash memory is accessed by
instruction ‘LDC’. This is a sector erasable and a byte programmable flash. User can program the data in a flash
memory area any time you want. The S3F80JB ‘s embedded 64K-byte memory has two operating features as
below:
— User Program Mode
— Tool Program Mode
Flash ROM Configuration
The S3F80JB flash memory consists of 512sectors. Each sector consists of 128bytes. So, the total size of flash
memory is 512x128 bytes (64KB). User can erase the flash memory by a sector unit at a time and write the data
into the flash memory by a byte unit at a time.
— 64Kbyte Internal flash memory
— Sector size: 128-Bytes
— 10years data retention
— Fast programming Time:
Sector Erase: 10ms (min)
Byte Program: 32us (min)
— Byte programmable
— User programmable by ‘LDC’ instruction
— Sector (128-Bytes) erase available
— External serial programming support
— Endurance: 10,000 Erase/Program cycles (min)
— Expandable OBPTM (On Board Program)