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Normal mode
*1
FWE = 1
FWE = 0
On-board
programming mode
Software programming
disable state
Notes: In order to perform a normal read of flash memory, SWE must be cleared to 0. Also note that verify-reads
can be performed during the programming/erasing process.
1.
: Normal mode
2. Do not make a state transition by setting or clearing multiple bits simultaneously.
3. After a transition from erase mode to the erase setup state, do not enter erase mode without passing
through the software programming enable state.
4. After a transition from program mode to the program setup state, do not enter program mode without
passing through the software programming enable state.
Figure 18.9 FLMCR1 Bit Settings and State Transitions
546
ESU = 1
*2
SWE = 1
Software
programming
enable
SWE = 0
state
PV = 0
: On-board programming mode
*3
Erase setup
state
ESU = 0
Erase-verify
EV = 1
mode
EV = 0
PSU = 1
*4
Program
PSU = 0
setup state
PV = 1
Program-verify
mode
E = 1
Erase mode
E = 0
P = 1
Program mode
P = 0
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