HD404669 Datasheet, PDF (108/142 Pages) Hitachi Semiconductor – Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit

HD404669 Series
Yes
No
n < 25?
Start
Set write/verify modes
V_CC = 6.0 ± 0.25 V, V_PP = 12.5 ± 0.3 V
Address = 0
n=0
n + 1→ n
Program t_PW =1 ms ± 5%
No
Verification OK?
Yes
Program t _OPW = 3n ms
Address + 1 → Address
No
Last address?
Yes
Set read mode
V_CC = 5.0 ± 0.5 V, V_PP = V_CC ± 0.6 V
Reject
No
Read
all addresses
?
Yes
End
Figure 81 Flowchart of High-Speed Programming
108