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6174B–ATARM–07-Nov-05
AT91FR40162S Preliminary
20.6.2
Sector or Chip Erase Cycle Waveforms
Figure 20-17. Sector or Chip Erase Cycle Waveforms
Notes:
1. OE must be high only when WE and CE are both low.
2. For chip erase, the address should be 555. For sector erase, the address depends on what
sector is to be erased. (See footnote
of
Table 11-2, “Command Definition Table,” on
3. For chip erase, the data should be 10H, and for sector erase, the data should be 30H.
OE
(1)
AA
80
Note 3
55
55
555
555
Note 2
AA
WORD 0
WORD 1
WORD 2
WORD 3
WORD 4
WORD 5
AAA
AAA
t
WPH
t
WP
CE
WE
A0-A19
DATA
t
AS
t
AH
t
EC
t
DH
t
DS
555
t
WC