Fujitsu MB90335 Series Hardware Manual page 525

CHAPTER 22 DUAL OPERATION FLASH MEMORY
22.7 Details of Programming/Erasing Flash Memory
Programming error
504
Figure 22.7-1 Example of Data Programming Procedure
Start
FMCS: WE (bit5)
Programming enabled
FWR0/FWR1
Accidental write preventive function setting
(Accidental write preventive sector: 0,
writing sector
Program command sequence
(1)FFUAAA XXAA
H
(2)FFU554 XX55
H
(3)FFUAAA XXA0
H
(4)Program address
Internal address read
Data polling
(DQ7)
Data
0
Timing limit
(DQ5)
Internal address read
Data
Data polling
(DQ7)
Data
Last address
FMCS: WE (bit5)
Programming enabled
Completed
FUJITSU MICROELECTRONICS LIMITED
:1 )
H
H
H
Program data
Data
1
NO
YES
MB90335 Series
Next address
CM44-10137-6E