626
Figure 18-29 Power-On and Power-Off Timing (User Program Mode)
tosc1
12
±
0.6 V
0 to
Vcc V
2.7 to
5.5 V
VppE
set
VppE
cleared
min 0
µ
s
0 to
Vcc V
t
FRS
t
VPS
*
1
ø
V
CC
V
PP
MD2
to 0
RES
V
PP
E bit
0 to
Vcc V
t
MDS
0 to
Vcc V
*
2
*
2
Programming/
erasing
possible
Period during which flash memory access is prohibited
Period during which flash memory can be rewritten
(Execution of program in flash memory prohibited, and data reads other than verify
operations prohibited)
t
VPS
: 5 to 10
µ
s
*
1
The level of the mode pins (MD2 to MD0) must be fixed from power-on to power-off
by pulling the pins up or down.
*
2
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