h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 755

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

V
FWE
MD2 to MD0
RES
SWE bit
Notes: 1. Except when switching modes, the level of the mode pins (MD2 to MD0) must be fixed until power-
CC
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)
2. See section 23.7, Flash Memory Characteristics.
3. Mode programming setup time t
off by pulling the pins up or down.
*1
Figure 20.27 Power-On/Off Timing (User Program Mode)
t
OSC1
t
MDS
SWE set
*3
*2
Wait time:
MDS
(min) = 200 ns
x
Program-
ming/
erasing
possible
Rev. 5.00 Sep 22, 2005 page 729 of 1136
Wait time:
100 µs
SWE cleared
Min 0 µs
REJ09B0257-0500
Section 20 ROM