mc68hc912dg128 Freescale Semiconductor, Inc, mc68hc912dg128 Datasheet - Page 121

• Manufacturer Part Number: mc68hc912dg128
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MC68HC912DG128 — Rev 3.0
MOTOROLA
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
CLEAR ERASE PULSE COUNTER (n
Flash Memory
Figure 7-2. Erase Sequence Flow
NO
DELAY BEFORE VERIFY
DELAY FOR DURATION
CLEAR MARGIN FLAG
WRITE TO ARRAY
OF ERASE PULSE
ARRAY ERASED
TURN OFF V
START ERASE
MARGIN FLAG
n
WRITE PPAGE
TURN ON V
CLEAR ENPE
DECREMENT
EP
CLEAR LAT
SET ERAS
SET LAT
SET ENPE
(t
(t
ERASED?
n
VERASE
COUNTER
EPULSE
ARRAY
SET?
EP
IS
= 0?
YES
YES
YES
)
)
FP
FP
NO
NO
ARRAY FAILED TO ERASE
EP
)
n
INCREMENT
EP
ERASED?
n
COUNTER
ARRAY
READ
ARRAY
EP
= 5?
YES
NO
Erasing the Flash EEPROM
YES
MARGIN FLAG
NO
SET
Technical Data
Flash Memory
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