h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 754

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

Section 20 ROM
10. Do not touch the socket adapter or chip during programming.
Rev. 5.00 Sep 22, 2005 page 728 of 1136
REJ09B0257-0500
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
Touching either of these can cause contact faults and write errors.
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 20.26 Power-On/Off Timing (Boot Mode)
t
OSC1
t
MDS
SWE set
*2
t
*3
MDS
MDS
Wait time:
*3
(min) = 200 ns
x
Program-
ming/
erasing
possible
Wait time:
100 µs
Min 0 µs
SWE cleared
Min 0 µs