HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 628

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

High-Speed, High-Reliability Erasing: The H8/3048F flash memory uses a high-speed, high-
reliability erasing procedure. This procedure provides enhanced erasing speed without subjecting
the device to voltage stress and without sacrificing data reliability . Figure 18-24 shows the basic
high-speed, high-reliability erasing flowchart. Tables 18-22 and 18-23 list the electrical
characteristics during programming.
Note: * Follow the high-speed, high-reliability flowchart in programming all bits.
Address + 1
address
Figure 18-24 High-Speed, High-Reliability Erasing
No
Erase setup/erase command
Erase-verify command
Program 0 to all bits *
Last address?
Wait (10 ms)
Verification?
Address = 0
Wait (6 s)
n + 1
n = 0
Start
End
OK
Yes
619
n
No good
n = 3000?
Fail
Yes
No