SH7020 Datasheet, PDF (438/509 Pages) Renesas Technology Corp – SuperH™ RISC engine

Start
Set EPROM writer to
write/verify mode
(V_CC = 6.0 V ± 0.25 V,
V_PP = 12.5 V ± 0.3 V)
Address = 0
n=0
No
Yes
n = 25?
n+1→n
Data write
(t_PW = 0.2 ms ± 5%)
No
Verify
result OK?
Yes
Data write
(t_OPW = (0.2 × n) ms)
Address + 1 →
Address
Final
No
address?
Yes
Set EPROM
writer to read mode
(V_CC = 5.0 V ± 0.25 V,
V_PP = V_CC)
No good
No
Results of
reading all address
OK?
V_CC: Power supply
V_PP: PROM program power supply
t_PW: Initial programming pulse width
t_OPW: Over programming pulse width
Yes
End
Figure 16.4 Basic Flowchart of High-Speed High-Reliability Programming
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