User`s manual

Engineering Bulletin
EB183 — Rev. 1.0
10 MOTOROLA
Figure 5. Erase Sequence Flow
START ERASE
SET LAT
SET ERAS
WRITE TO ARRAY
SET ENPE
READ
NO
ARRAY FAILED TO ERASE
ARRAY
CLEAR MARGIN FLAG
INCREMENT
n
EP
COUNTER
DECREMENT
n
EP
COUNTER
NO
YES
YES
TURN ON V
FP
DELAY FOR DURATION
OF ERASE PULSE
(t
EPULSE
)
CLEAR ENPE
DELAY BEFORE VERIFY
IS
MARGIN FLAG
SET?
NO
YES
NO
YES
ARRAY
ERASED?
SET
MARGIN FLAG
n
EP
= 0?
TURN OFF V
FP
(t
VERASE
)
n
EP
= 5?
YES
NO
ARRAY ERASED
CLEAR ERASE PULSE COUNTER (n
EP
)
CLEAR LAT
ARRAY
ERASED?