Hitachi H8S/2338 Series Hardware Manual page 602

ø
V
CC
FWE
*1
MD to MD
2 0
RES
SWE bit
Period during which flash memory access is prohibited
(x: Wait time after setting SWE bit)
Period during which flash memory can be programmed
(Execution of program in flash memory prohibited, and data reads other than verify operations
prohibited)
Notes: 1. Except when switching modes, the level of the mode pins (MD2 to MD0) must be fixed until
power-off by pulling the pins up or down.
2. See the Flash Memory Characteristics section in the reference manual for the relevant
model.
3. Mode programming setup time t
Figure 17-31 Power-On/Off Timing (User Program Mode)
596
Wait time: x
t
OSC1
*3
t
MDS
SWE set
*2
(min) = 200 ns
MDS
Programming/
erasing
Wait time: 100 µs
possible
SWE cleared
Min 0 µs