HD6433308 Datasheet, PDF (256/349 Pages) Hitachi Semiconductor – Hitachi Single-Chip MicroComputer

Figure 13-4 shows the basic high-speed programming flowchart.
Tables 13-5 and 13-6 list the electrical characteristics of the chip in the PROM mode. Figure 13-5
shows a write/verify timing chart.
Y
N
n < 25
N
Error
START
Set program/verify mode
Vcc = 6.0V ±0.25V, Vpp = 12.5V ±0.5V
Address = 0
n=0
n+1 →n
Write time t _PW= 1 ms ±5%
N
Verify OK?
Y
Write t _OPW= 3n ms
N
Last address?
Y
Set read mode
Vcc = 5.0V ±0.5V, Vpp = Vcc
Address + 1 → Address
All addresses read?
Y
END
Figure 13-4. High-Speed Programming Flowchart
246
Figure 13-4