HD64F3028F25 Datasheet, PDF (652/925 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

Wait time:
x
Program-
ming/
erasing
possible
Wait time:
y
φ
V_CC
t_OSC1
Min 0 µs
FWE
MD₂ to MD₀^*1
RES
SWE bit
t_MDS
SWE set
SWE cleared
Period during which flash memory access is prohibited
(x: Wait time after setting SWE bit, y: Wait time after clearing SWE bit)^*2
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–MD₀) must be fixed until power-off
by pulling the pins up or down.
2. See section 21.2.6, Flash Memory Characteristics.
Figure 18.17 Power-On/Off Timing (User Program Mode)
Rev. 2.00, 09/03, page 620 of 890