HD64F2638F20J Datasheet, PDF (950/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 21C ROM
(H8S/2635 Group)
φ
VCC
FWE
MD2 to MD0^*1
RES
SWE bit
H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Wait time: x
Programming/
erasing
possible Wait time: 100 μs
t_OSC1
Min. 0 μs
tMDS^*3
SWE set
SWE cleared
Period during which flash memory access is prohibited
(x: Wait time after setting 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.
2.
3.
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.
See section 24.2.7, 24.3.7, and 24.4.7, Flash Memory Characteristics.
Mode programming setup time tMDS (min.) = 200 ns
Figure 21C-19 Power-On/Off Timing (User Program Mode)
Page 900 of 1458
REJ09B0103-0800 Rev. 8.00
May 28, 2010