Fujitsu FR81S User Manual
CHAPTER 45: FLASH MEMORY
3. Configuration
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : FLASH MEMORY
FUJITSU SEMICONDUCTOR CONFIDENTIAL
6
3.1. Block Diagram
The block diagram of the flash memory is shown below.
Figure 3-1
Block Diagram
Flash Macro
small sector
Mode selector unit
Security controller unit
Address exchanger unit
Flash memory control signal generator
unit
unit
ECC encoder unit
ECC error detection & error correction
unit
unit
Chip erase flag
XBS
int
er
fac
e
un
it
Fl
as
h
int
er
fac
e
un
it
Interface unit for parallel writer
XBS
C
ros
sbar
Int
er
fac
e
Pins for parallel writer
Flash Macro
large sector
large sector
MB91520 Series
MN705-00010-1v0-E
1927