Fujitsu FR81S User Manual
CHAPTER 39: RAMECC
2. Features
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : RAMECC
FUJITSU SEMICONDUCTOR CONFIDENTIAL
4
2. Features
This section explains features of the RAMECC.
Target RAM
· XBS RAM
MB91F522: 48K bytes
MB91F523: 48K bytes
MB91F524: 64K bytes
MB91F525: 96K bytes
MB91F526: 128K bytes
· Backup-RAM
8K bytes
RAMECC Function
Errors up to double bits are detected for those data read from or written to RAM.
Moreover, if a single-bit error is detected it will be corrected.
Interrupt Function
A double bit error is detected and RAM double bit error interrupt signal is generated.
Test Mode
A pseudo error occurs for the software debugging.
MB91520 Series
MN705-00010-1v0-E
1295