Embedded Flash Memory Interface - Samsung S3F84B8 User Manual

S3F84B8_UM_REV 1.00
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19.1 OVERVIEW OF EMBEDDED FLASH MEMORY INTERFACE
S3F84B8 microcontroller supports an internal (on-chip) flash memory instead of a masked ROM. The sector
erasable and byte programmable flash memory in S3F84B8 can also be programmed by the user using 'LDC'
instruction. You can program the data in flash memory area at any time.
The embedded 8KB memory in S3F84B8 has two operating modes, namely:

User Program Mode

Tool Program Mode
NOTE: For more information about Tool Program Mode, refer to the Chapter 18, "Flash MCU".
19.1.1 FLASH ROM CONFIGURATION
The flash memory in S3F84B8 consists of 64 sectors. Each sector, in turn, consists of 128 bytes. So, the total size
of flash memory is 12864 bytes (8KB). You can erase the flash memory by a sector unit at any time, and even
write data into the flash memory by a byte unit at any time.
19.1.2 KEY FEATURES OF EMBEDDED FLASH MEMORY INTERFACE
The key features of embedded flash memory interface include:

8kB internal flash memory

Sector size: 128 bytes

10 years of data retention

Fast programming Time: Sector Erase: 4ms (minimum) and Byte Program: 20us (minimum)

Byte programmable

User programmable by 'LDC' instruction

Sector erase (128 bytes)

External serial programming

Endurance: 10,000 Erase/Program cycles (minimum)

Expandable On Board Program (OBP)

EMBEDDED FLASH MEMORY INTERFACE

19 EMBEDDED FLASH MEMORY INTERFACE
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