HD6432646 Hitachi, HD6432646 Datasheet - Page 747

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

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
MDS
Wait time:
(min) = 200 ns
x
Program-
ming/
erasing
possible
Wait time:
100 s
SWE cleared
Min 0 s
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